xref: /llvm-project/clang/unittests/Format/ConfigParseTest.cpp (revision 87ad34ffdcf2de99dab0ac86f148a03e4bd2dddc)
1 //===- unittest/Format/ConfigParseTest.cpp - Config parsing unit tests ----===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "clang/Format/Format.h"
10 
11 #include "llvm/Support/VirtualFileSystem.h"
12 #include "gtest/gtest.h"
13 
14 namespace clang {
15 namespace format {
16 namespace {
17 
18 FormatStyle getGoogleStyle() { return getGoogleStyle(FormatStyle::LK_Cpp); }
19 
20 #define EXPECT_ALL_STYLES_EQUAL(Styles)                                        \
21   for (size_t i = 1; i < Styles.size(); ++i)                                   \
22   EXPECT_EQ(Styles[0], Styles[i])                                              \
23       << "Style #" << i << " of " << Styles.size() << " differs from Style #0"
24 
25 TEST(ConfigParseTest, GetsPredefinedStyleByName) {
26   SmallVector<FormatStyle, 3> Styles;
27   Styles.resize(3);
28 
29   Styles[0] = getLLVMStyle();
30   EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1]));
31   EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2]));
32   EXPECT_ALL_STYLES_EQUAL(Styles);
33 
34   Styles[0] = getGoogleStyle();
35   EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1]));
36   EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2]));
37   EXPECT_ALL_STYLES_EQUAL(Styles);
38 
39   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
40   EXPECT_TRUE(
41       getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1]));
42   EXPECT_TRUE(
43       getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2]));
44   EXPECT_ALL_STYLES_EQUAL(Styles);
45 
46   Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp);
47   EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1]));
48   EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2]));
49   EXPECT_ALL_STYLES_EQUAL(Styles);
50 
51   Styles[0] = getMozillaStyle();
52   EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1]));
53   EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2]));
54   EXPECT_ALL_STYLES_EQUAL(Styles);
55 
56   Styles[0] = getWebKitStyle();
57   EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1]));
58   EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2]));
59   EXPECT_ALL_STYLES_EQUAL(Styles);
60 
61   Styles[0] = getGNUStyle();
62   EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1]));
63   EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2]));
64   EXPECT_ALL_STYLES_EQUAL(Styles);
65 
66   EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0]));
67 }
68 
69 TEST(ConfigParseTest, GetsCorrectBasedOnStyle) {
70   SmallVector<FormatStyle, 8> Styles;
71   Styles.resize(2);
72 
73   Styles[0] = getGoogleStyle();
74   Styles[1] = getLLVMStyle();
75   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
76   EXPECT_ALL_STYLES_EQUAL(Styles);
77 
78   Styles.resize(5);
79   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
80   Styles[1] = getLLVMStyle();
81   Styles[1].Language = FormatStyle::LK_JavaScript;
82   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
83 
84   Styles[2] = getLLVMStyle();
85   Styles[2].Language = FormatStyle::LK_JavaScript;
86   EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n"
87                                   "BasedOnStyle: Google",
88                                   &Styles[2])
89                    .value());
90 
91   Styles[3] = getLLVMStyle();
92   Styles[3].Language = FormatStyle::LK_JavaScript;
93   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n"
94                                   "Language: JavaScript",
95                                   &Styles[3])
96                    .value());
97 
98   Styles[4] = getLLVMStyle();
99   Styles[4].Language = FormatStyle::LK_JavaScript;
100   EXPECT_EQ(0, parseConfiguration("---\n"
101                                   "BasedOnStyle: LLVM\n"
102                                   "IndentWidth: 123\n"
103                                   "---\n"
104                                   "BasedOnStyle: Google\n"
105                                   "Language: JavaScript",
106                                   &Styles[4])
107                    .value());
108   EXPECT_ALL_STYLES_EQUAL(Styles);
109 }
110 
111 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME)                             \
112   Style.FIELD = false;                                                         \
113   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value());      \
114   EXPECT_TRUE(Style.FIELD);                                                    \
115   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value());     \
116   EXPECT_FALSE(Style.FIELD)
117 
118 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD)
119 
120 #define CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, CONFIG_NAME)              \
121   Style.STRUCT.FIELD = false;                                                  \
122   EXPECT_EQ(0,                                                                 \
123             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": true", &Style)   \
124                 .value());                                                     \
125   EXPECT_TRUE(Style.STRUCT.FIELD);                                             \
126   EXPECT_EQ(0,                                                                 \
127             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": false", &Style)  \
128                 .value());                                                     \
129   EXPECT_FALSE(Style.STRUCT.FIELD)
130 
131 #define CHECK_PARSE_NESTED_BOOL(STRUCT, FIELD)                                 \
132   CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, #FIELD)
133 
134 #define CHECK_PARSE(TEXT, FIELD, VALUE)                                        \
135   EXPECT_NE(VALUE, Style.FIELD) << "Initial value already the same!";          \
136   EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value());                      \
137   EXPECT_EQ(VALUE, Style.FIELD) << "Unexpected value after parsing!"
138 
139 #define CHECK_PARSE_NESTED_VALUE(TEXT, STRUCT, FIELD, VALUE)                   \
140   EXPECT_NE(VALUE, Style.STRUCT.FIELD) << "Initial value already the same!";   \
141   EXPECT_EQ(0, parseConfiguration(#STRUCT ":\n  " TEXT, &Style).value());      \
142   EXPECT_EQ(VALUE, Style.STRUCT.FIELD) << "Unexpected value after parsing!"
143 
144 TEST(ConfigParseTest, ParsesConfigurationBools) {
145   FormatStyle Style = {};
146   Style.Language = FormatStyle::LK_Cpp;
147   CHECK_PARSE_BOOL(AllowAllArgumentsOnNextLine);
148   CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
149   CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine);
150   CHECK_PARSE_BOOL(AllowShortEnumsOnASingleLine);
151   CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
152   CHECK_PARSE_BOOL(BinPackArguments);
153   CHECK_PARSE_BOOL(BinPackParameters);
154   CHECK_PARSE_BOOL(BreakAfterJavaFieldAnnotations);
155   CHECK_PARSE_BOOL(BreakBeforeTernaryOperators);
156   CHECK_PARSE_BOOL(BreakStringLiterals);
157   CHECK_PARSE_BOOL(CompactNamespaces);
158   CHECK_PARSE_BOOL(DerivePointerAlignment);
159   CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding");
160   CHECK_PARSE_BOOL(DisableFormat);
161   CHECK_PARSE_BOOL(IndentAccessModifiers);
162   CHECK_PARSE_BOOL(IndentCaseLabels);
163   CHECK_PARSE_BOOL(IndentCaseBlocks);
164   CHECK_PARSE_BOOL(IndentGotoLabels);
165   CHECK_PARSE_BOOL_FIELD(IndentRequiresClause, "IndentRequires");
166   CHECK_PARSE_BOOL(IndentRequiresClause);
167   CHECK_PARSE_BOOL(IndentWrappedFunctionNames);
168   CHECK_PARSE_BOOL(InsertBraces);
169   CHECK_PARSE_BOOL(InsertNewlineAtEOF);
170   CHECK_PARSE_BOOL(KeepEmptyLinesAtEOF);
171   CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks);
172   CHECK_PARSE_BOOL(ObjCSpaceAfterProperty);
173   CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
174   CHECK_PARSE_BOOL(Cpp11BracedListStyle);
175   CHECK_PARSE_BOOL(ReflowComments);
176   CHECK_PARSE_BOOL(RemoveBracesLLVM);
177   CHECK_PARSE_BOOL(RemoveSemicolon);
178   CHECK_PARSE_BOOL(SpacesInParentheses);
179   CHECK_PARSE_BOOL(SpacesInSquareBrackets);
180   CHECK_PARSE_BOOL(SpacesInConditionalStatement);
181   CHECK_PARSE_BOOL(SpaceInEmptyBlock);
182   CHECK_PARSE_BOOL(SpaceInEmptyParentheses);
183   CHECK_PARSE_BOOL(SpacesInContainerLiterals);
184   CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses);
185   CHECK_PARSE_BOOL(SpaceAfterCStyleCast);
186   CHECK_PARSE_BOOL(SpaceAfterTemplateKeyword);
187   CHECK_PARSE_BOOL(SpaceAfterLogicalNot);
188   CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators);
189   CHECK_PARSE_BOOL(SpaceBeforeCaseColon);
190   CHECK_PARSE_BOOL(SpaceBeforeCpp11BracedList);
191   CHECK_PARSE_BOOL(SpaceBeforeCtorInitializerColon);
192   CHECK_PARSE_BOOL(SpaceBeforeInheritanceColon);
193   CHECK_PARSE_BOOL(SpaceBeforeJsonColon);
194   CHECK_PARSE_BOOL(SpaceBeforeRangeBasedForLoopColon);
195   CHECK_PARSE_BOOL(SpaceBeforeSquareBrackets);
196   CHECK_PARSE_BOOL(VerilogBreakBetweenInstancePorts);
197 
198   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterCaseLabel);
199   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterClass);
200   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterEnum);
201   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterFunction);
202   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterNamespace);
203   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterObjCDeclaration);
204   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterStruct);
205   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterUnion);
206   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterExternBlock);
207   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeCatch);
208   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeElse);
209   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeLambdaBody);
210   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeWhile);
211   CHECK_PARSE_NESTED_BOOL(BraceWrapping, IndentBraces);
212   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyFunction);
213   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyRecord);
214   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyNamespace);
215   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterControlStatements);
216   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterForeachMacros);
217   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions,
218                           AfterFunctionDeclarationName);
219   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions,
220                           AfterFunctionDefinitionName);
221   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterIfMacros);
222   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterOverloadedOperator);
223   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, BeforeNonEmptyParentheses);
224 }
225 
226 #undef CHECK_PARSE_BOOL
227 
228 TEST(ConfigParseTest, ParsesConfiguration) {
229   FormatStyle Style = {};
230   Style.Language = FormatStyle::LK_Cpp;
231   CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234);
232   CHECK_PARSE("ConstructorInitializerIndentWidth: 1234",
233               ConstructorInitializerIndentWidth, 1234u);
234   CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u);
235   CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u);
236   CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u);
237   CHECK_PARSE("PenaltyBreakAssignment: 1234", PenaltyBreakAssignment, 1234u);
238   CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234",
239               PenaltyBreakBeforeFirstCallParameter, 1234u);
240   CHECK_PARSE("PenaltyBreakTemplateDeclaration: 1234",
241               PenaltyBreakTemplateDeclaration, 1234u);
242   CHECK_PARSE("PenaltyBreakOpenParenthesis: 1234", PenaltyBreakOpenParenthesis,
243               1234u);
244   CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u);
245   CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234",
246               PenaltyReturnTypeOnItsOwnLine, 1234u);
247   CHECK_PARSE("SpacesBeforeTrailingComments: 1234",
248               SpacesBeforeTrailingComments, 1234u);
249   CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u);
250   CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u);
251   CHECK_PARSE("BracedInitializerIndentWidth: 34", BracedInitializerIndentWidth,
252               34);
253   CHECK_PARSE("CommentPragmas: '// abc$'", CommentPragmas, "// abc$");
254 
255   Style.QualifierAlignment = FormatStyle::QAS_Right;
256   CHECK_PARSE("QualifierAlignment: Leave", QualifierAlignment,
257               FormatStyle::QAS_Leave);
258   CHECK_PARSE("QualifierAlignment: Right", QualifierAlignment,
259               FormatStyle::QAS_Right);
260   CHECK_PARSE("QualifierAlignment: Left", QualifierAlignment,
261               FormatStyle::QAS_Left);
262   CHECK_PARSE("QualifierAlignment: Custom", QualifierAlignment,
263               FormatStyle::QAS_Custom);
264 
265   Style.QualifierOrder.clear();
266   CHECK_PARSE("QualifierOrder: [ const, volatile, type ]", QualifierOrder,
267               std::vector<std::string>({"const", "volatile", "type"}));
268   Style.QualifierOrder.clear();
269   CHECK_PARSE("QualifierOrder: [const, type]", QualifierOrder,
270               std::vector<std::string>({"const", "type"}));
271   Style.QualifierOrder.clear();
272   CHECK_PARSE("QualifierOrder: [volatile, type]", QualifierOrder,
273               std::vector<std::string>({"volatile", "type"}));
274 
275 #define CHECK_ALIGN_CONSECUTIVE(FIELD)                                         \
276   do {                                                                         \
277     Style.FIELD.Enabled = true;                                                \
278     CHECK_PARSE(#FIELD ": None", FIELD,                                        \
279                 FormatStyle::AlignConsecutiveStyle(                            \
280                     {/*Enabled=*/false, /*AcrossEmptyLines=*/false,            \
281                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
282                      /*PadOperators=*/true}));                                 \
283     CHECK_PARSE(#FIELD ": Consecutive", FIELD,                                 \
284                 FormatStyle::AlignConsecutiveStyle(                            \
285                     {/*Enabled=*/true, /*AcrossEmptyLines=*/false,             \
286                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
287                      /*PadOperators=*/true}));                                 \
288     CHECK_PARSE(#FIELD ": AcrossEmptyLines", FIELD,                            \
289                 FormatStyle::AlignConsecutiveStyle(                            \
290                     {/*Enabled=*/true, /*AcrossEmptyLines=*/true,              \
291                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
292                      /*PadOperators=*/true}));                                 \
293     CHECK_PARSE(#FIELD ": AcrossEmptyLinesAndComments", FIELD,                 \
294                 FormatStyle::AlignConsecutiveStyle(                            \
295                     {/*Enabled=*/true, /*AcrossEmptyLines=*/true,              \
296                      /*AcrossComments=*/true, /*AlignCompound=*/false,         \
297                      /*PadOperators=*/true}));                                 \
298     /* For backwards compability, false / true should still parse */           \
299     CHECK_PARSE(#FIELD ": false", FIELD,                                       \
300                 FormatStyle::AlignConsecutiveStyle(                            \
301                     {/*Enabled=*/false, /*AcrossEmptyLines=*/false,            \
302                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
303                      /*PadOperators=*/true}));                                 \
304     CHECK_PARSE(#FIELD ": true", FIELD,                                        \
305                 FormatStyle::AlignConsecutiveStyle(                            \
306                     {/*Enabled=*/true, /*AcrossEmptyLines=*/false,             \
307                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
308                      /*PadOperators=*/true}));                                 \
309                                                                                \
310     CHECK_PARSE_NESTED_BOOL(FIELD, Enabled);                                   \
311     CHECK_PARSE_NESTED_BOOL(FIELD, AcrossEmptyLines);                          \
312     CHECK_PARSE_NESTED_BOOL(FIELD, AcrossComments);                            \
313     CHECK_PARSE_NESTED_BOOL(FIELD, AlignCompound);                             \
314     CHECK_PARSE_NESTED_BOOL(FIELD, PadOperators);                              \
315   } while (false)
316 
317   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveAssignments);
318   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveBitFields);
319   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveMacros);
320   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveDeclarations);
321 
322 #undef CHECK_ALIGN_CONSECUTIVE
323 
324   Style.PointerAlignment = FormatStyle::PAS_Middle;
325   CHECK_PARSE("PointerAlignment: Left", PointerAlignment,
326               FormatStyle::PAS_Left);
327   CHECK_PARSE("PointerAlignment: Right", PointerAlignment,
328               FormatStyle::PAS_Right);
329   CHECK_PARSE("PointerAlignment: Middle", PointerAlignment,
330               FormatStyle::PAS_Middle);
331   Style.ReferenceAlignment = FormatStyle::RAS_Middle;
332   CHECK_PARSE("ReferenceAlignment: Pointer", ReferenceAlignment,
333               FormatStyle::RAS_Pointer);
334   CHECK_PARSE("ReferenceAlignment: Left", ReferenceAlignment,
335               FormatStyle::RAS_Left);
336   CHECK_PARSE("ReferenceAlignment: Right", ReferenceAlignment,
337               FormatStyle::RAS_Right);
338   CHECK_PARSE("ReferenceAlignment: Middle", ReferenceAlignment,
339               FormatStyle::RAS_Middle);
340   // For backward compatibility:
341   CHECK_PARSE("PointerBindsToType: Left", PointerAlignment,
342               FormatStyle::PAS_Left);
343   CHECK_PARSE("PointerBindsToType: Right", PointerAlignment,
344               FormatStyle::PAS_Right);
345   CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment,
346               FormatStyle::PAS_Middle);
347 
348   Style.Standard = FormatStyle::LS_Auto;
349   CHECK_PARSE("Standard: c++03", Standard, FormatStyle::LS_Cpp03);
350   CHECK_PARSE("Standard: c++11", Standard, FormatStyle::LS_Cpp11);
351   CHECK_PARSE("Standard: c++14", Standard, FormatStyle::LS_Cpp14);
352   CHECK_PARSE("Standard: c++17", Standard, FormatStyle::LS_Cpp17);
353   CHECK_PARSE("Standard: c++20", Standard, FormatStyle::LS_Cpp20);
354   CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto);
355   CHECK_PARSE("Standard: Latest", Standard, FormatStyle::LS_Latest);
356   // Legacy aliases:
357   CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03);
358   CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Latest);
359   CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03);
360   CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11);
361 
362   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
363   CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment",
364               BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment);
365   CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators,
366               FormatStyle::BOS_None);
367   CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators,
368               FormatStyle::BOS_All);
369   // For backward compatibility:
370   CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators,
371               FormatStyle::BOS_None);
372   CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators,
373               FormatStyle::BOS_All);
374 
375   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
376   CHECK_PARSE("BreakConstructorInitializers: BeforeComma",
377               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
378   CHECK_PARSE("BreakConstructorInitializers: AfterColon",
379               BreakConstructorInitializers, FormatStyle::BCIS_AfterColon);
380   CHECK_PARSE("BreakConstructorInitializers: BeforeColon",
381               BreakConstructorInitializers, FormatStyle::BCIS_BeforeColon);
382   // For backward compatibility:
383   CHECK_PARSE("BreakConstructorInitializersBeforeComma: true",
384               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
385 
386   Style.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
387   CHECK_PARSE("BreakInheritanceList: AfterComma", BreakInheritanceList,
388               FormatStyle::BILS_AfterComma);
389   CHECK_PARSE("BreakInheritanceList: BeforeComma", BreakInheritanceList,
390               FormatStyle::BILS_BeforeComma);
391   CHECK_PARSE("BreakInheritanceList: AfterColon", BreakInheritanceList,
392               FormatStyle::BILS_AfterColon);
393   CHECK_PARSE("BreakInheritanceList: BeforeColon", BreakInheritanceList,
394               FormatStyle::BILS_BeforeColon);
395   // For backward compatibility:
396   CHECK_PARSE("BreakBeforeInheritanceComma: true", BreakInheritanceList,
397               FormatStyle::BILS_BeforeComma);
398 
399   Style.PackConstructorInitializers = FormatStyle::PCIS_BinPack;
400   CHECK_PARSE("PackConstructorInitializers: Never", PackConstructorInitializers,
401               FormatStyle::PCIS_Never);
402   CHECK_PARSE("PackConstructorInitializers: BinPack",
403               PackConstructorInitializers, FormatStyle::PCIS_BinPack);
404   CHECK_PARSE("PackConstructorInitializers: CurrentLine",
405               PackConstructorInitializers, FormatStyle::PCIS_CurrentLine);
406   CHECK_PARSE("PackConstructorInitializers: NextLine",
407               PackConstructorInitializers, FormatStyle::PCIS_NextLine);
408   CHECK_PARSE("PackConstructorInitializers: NextLineOnly",
409               PackConstructorInitializers, FormatStyle::PCIS_NextLineOnly);
410   // For backward compatibility:
411   CHECK_PARSE("BasedOnStyle: Google\n"
412               "ConstructorInitializerAllOnOneLineOrOnePerLine: true\n"
413               "AllowAllConstructorInitializersOnNextLine: false",
414               PackConstructorInitializers, FormatStyle::PCIS_CurrentLine);
415   Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
416   CHECK_PARSE("BasedOnStyle: Google\n"
417               "ConstructorInitializerAllOnOneLineOrOnePerLine: false",
418               PackConstructorInitializers, FormatStyle::PCIS_BinPack);
419   CHECK_PARSE("ConstructorInitializerAllOnOneLineOrOnePerLine: true\n"
420               "AllowAllConstructorInitializersOnNextLine: true",
421               PackConstructorInitializers, FormatStyle::PCIS_NextLine);
422   Style.PackConstructorInitializers = FormatStyle::PCIS_BinPack;
423   CHECK_PARSE("ConstructorInitializerAllOnOneLineOrOnePerLine: true\n"
424               "AllowAllConstructorInitializersOnNextLine: false",
425               PackConstructorInitializers, FormatStyle::PCIS_CurrentLine);
426 
427   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_LogicalBlock;
428   CHECK_PARSE("EmptyLineBeforeAccessModifier: Never",
429               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Never);
430   CHECK_PARSE("EmptyLineBeforeAccessModifier: Leave",
431               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Leave);
432   CHECK_PARSE("EmptyLineBeforeAccessModifier: LogicalBlock",
433               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_LogicalBlock);
434   CHECK_PARSE("EmptyLineBeforeAccessModifier: Always",
435               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Always);
436 
437   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
438   CHECK_PARSE("AlignAfterOpenBracket: Align", AlignAfterOpenBracket,
439               FormatStyle::BAS_Align);
440   CHECK_PARSE("AlignAfterOpenBracket: DontAlign", AlignAfterOpenBracket,
441               FormatStyle::BAS_DontAlign);
442   CHECK_PARSE("AlignAfterOpenBracket: AlwaysBreak", AlignAfterOpenBracket,
443               FormatStyle::BAS_AlwaysBreak);
444   CHECK_PARSE("AlignAfterOpenBracket: BlockIndent", AlignAfterOpenBracket,
445               FormatStyle::BAS_BlockIndent);
446   // For backward compatibility:
447   CHECK_PARSE("AlignAfterOpenBracket: false", AlignAfterOpenBracket,
448               FormatStyle::BAS_DontAlign);
449   CHECK_PARSE("AlignAfterOpenBracket: true", AlignAfterOpenBracket,
450               FormatStyle::BAS_Align);
451 
452   Style.AlignEscapedNewlines = FormatStyle::ENAS_Left;
453   CHECK_PARSE("AlignEscapedNewlines: DontAlign", AlignEscapedNewlines,
454               FormatStyle::ENAS_DontAlign);
455   CHECK_PARSE("AlignEscapedNewlines: Left", AlignEscapedNewlines,
456               FormatStyle::ENAS_Left);
457   CHECK_PARSE("AlignEscapedNewlines: Right", AlignEscapedNewlines,
458               FormatStyle::ENAS_Right);
459   // For backward compatibility:
460   CHECK_PARSE("AlignEscapedNewlinesLeft: true", AlignEscapedNewlines,
461               FormatStyle::ENAS_Left);
462   CHECK_PARSE("AlignEscapedNewlinesLeft: false", AlignEscapedNewlines,
463               FormatStyle::ENAS_Right);
464 
465   Style.AlignOperands = FormatStyle::OAS_Align;
466   CHECK_PARSE("AlignOperands: DontAlign", AlignOperands,
467               FormatStyle::OAS_DontAlign);
468   CHECK_PARSE("AlignOperands: Align", AlignOperands, FormatStyle::OAS_Align);
469   CHECK_PARSE("AlignOperands: AlignAfterOperator", AlignOperands,
470               FormatStyle::OAS_AlignAfterOperator);
471   // For backward compatibility:
472   CHECK_PARSE("AlignOperands: false", AlignOperands,
473               FormatStyle::OAS_DontAlign);
474   CHECK_PARSE("AlignOperands: true", AlignOperands, FormatStyle::OAS_Align);
475 
476   CHECK_PARSE("AlignTrailingComments: Leave", AlignTrailingComments,
477               FormatStyle::TrailingCommentsAlignmentStyle(
478                   {FormatStyle::TCAS_Leave, 0}));
479   CHECK_PARSE("AlignTrailingComments: Always", AlignTrailingComments,
480               FormatStyle::TrailingCommentsAlignmentStyle(
481                   {FormatStyle::TCAS_Always, 0}));
482   CHECK_PARSE("AlignTrailingComments: Never", AlignTrailingComments,
483               FormatStyle::TrailingCommentsAlignmentStyle(
484                   {FormatStyle::TCAS_Never, 0}));
485   // For backwards compatibility
486   CHECK_PARSE("AlignTrailingComments: true", AlignTrailingComments,
487               FormatStyle::TrailingCommentsAlignmentStyle(
488                   {FormatStyle::TCAS_Always, 0}));
489   CHECK_PARSE("AlignTrailingComments: false", AlignTrailingComments,
490               FormatStyle::TrailingCommentsAlignmentStyle(
491                   {FormatStyle::TCAS_Never, 0}));
492   CHECK_PARSE_NESTED_VALUE("Kind: Always", AlignTrailingComments, Kind,
493                            FormatStyle::TCAS_Always);
494   CHECK_PARSE_NESTED_VALUE("Kind: Never", AlignTrailingComments, Kind,
495                            FormatStyle::TCAS_Never);
496   CHECK_PARSE_NESTED_VALUE("Kind: Leave", AlignTrailingComments, Kind,
497                            FormatStyle::TCAS_Leave);
498   CHECK_PARSE_NESTED_VALUE("OverEmptyLines: 1234", AlignTrailingComments,
499                            OverEmptyLines, 1234u);
500 
501   Style.UseTab = FormatStyle::UT_ForIndentation;
502   CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never);
503   CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation);
504   CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always);
505   CHECK_PARSE("UseTab: ForContinuationAndIndentation", UseTab,
506               FormatStyle::UT_ForContinuationAndIndentation);
507   CHECK_PARSE("UseTab: AlignWithSpaces", UseTab,
508               FormatStyle::UT_AlignWithSpaces);
509   // For backward compatibility:
510   CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never);
511   CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always);
512 
513   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
514   CHECK_PARSE("AllowShortBlocksOnASingleLine: Never",
515               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
516   CHECK_PARSE("AllowShortBlocksOnASingleLine: Empty",
517               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Empty);
518   CHECK_PARSE("AllowShortBlocksOnASingleLine: Always",
519               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
520   // For backward compatibility:
521   CHECK_PARSE("AllowShortBlocksOnASingleLine: false",
522               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
523   CHECK_PARSE("AllowShortBlocksOnASingleLine: true",
524               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
525 
526   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
527   CHECK_PARSE("AllowShortFunctionsOnASingleLine: None",
528               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
529   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline",
530               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline);
531   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty",
532               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty);
533   CHECK_PARSE("AllowShortFunctionsOnASingleLine: All",
534               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
535   // For backward compatibility:
536   CHECK_PARSE("AllowShortFunctionsOnASingleLine: false",
537               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
538   CHECK_PARSE("AllowShortFunctionsOnASingleLine: true",
539               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
540 
541   Style.AllowShortLambdasOnASingleLine = FormatStyle::SLS_All;
542   CHECK_PARSE("AllowShortLambdasOnASingleLine: None",
543               AllowShortLambdasOnASingleLine, FormatStyle::SLS_None);
544   CHECK_PARSE("AllowShortLambdasOnASingleLine: Empty",
545               AllowShortLambdasOnASingleLine, FormatStyle::SLS_Empty);
546   CHECK_PARSE("AllowShortLambdasOnASingleLine: Inline",
547               AllowShortLambdasOnASingleLine, FormatStyle::SLS_Inline);
548   CHECK_PARSE("AllowShortLambdasOnASingleLine: All",
549               AllowShortLambdasOnASingleLine, FormatStyle::SLS_All);
550   // For backward compatibility:
551   CHECK_PARSE("AllowShortLambdasOnASingleLine: false",
552               AllowShortLambdasOnASingleLine, FormatStyle::SLS_None);
553   CHECK_PARSE("AllowShortLambdasOnASingleLine: true",
554               AllowShortLambdasOnASingleLine, FormatStyle::SLS_All);
555 
556   Style.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Both;
557   CHECK_PARSE("SpaceAroundPointerQualifiers: Default",
558               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Default);
559   CHECK_PARSE("SpaceAroundPointerQualifiers: Before",
560               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Before);
561   CHECK_PARSE("SpaceAroundPointerQualifiers: After",
562               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_After);
563   CHECK_PARSE("SpaceAroundPointerQualifiers: Both",
564               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Both);
565 
566   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
567   CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens,
568               FormatStyle::SBPO_Never);
569   CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens,
570               FormatStyle::SBPO_Always);
571   CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens,
572               FormatStyle::SBPO_ControlStatements);
573   CHECK_PARSE("SpaceBeforeParens: ControlStatementsExceptControlMacros",
574               SpaceBeforeParens,
575               FormatStyle::SBPO_ControlStatementsExceptControlMacros);
576   CHECK_PARSE("SpaceBeforeParens: NonEmptyParentheses", SpaceBeforeParens,
577               FormatStyle::SBPO_NonEmptyParentheses);
578   CHECK_PARSE("SpaceBeforeParens: Custom", SpaceBeforeParens,
579               FormatStyle::SBPO_Custom);
580   // For backward compatibility:
581   CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens,
582               FormatStyle::SBPO_Never);
583   CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens,
584               FormatStyle::SBPO_ControlStatements);
585   CHECK_PARSE("SpaceBeforeParens: ControlStatementsExceptForEachMacros",
586               SpaceBeforeParens,
587               FormatStyle::SBPO_ControlStatementsExceptControlMacros);
588 
589   Style.ColumnLimit = 123;
590   FormatStyle BaseStyle = getLLVMStyle();
591   CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
592   CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u);
593 
594   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
595   CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces,
596               FormatStyle::BS_Attach);
597   CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces,
598               FormatStyle::BS_Linux);
599   CHECK_PARSE("BreakBeforeBraces: Mozilla", BreakBeforeBraces,
600               FormatStyle::BS_Mozilla);
601   CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces,
602               FormatStyle::BS_Stroustrup);
603   CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces,
604               FormatStyle::BS_Allman);
605   CHECK_PARSE("BreakBeforeBraces: Whitesmiths", BreakBeforeBraces,
606               FormatStyle::BS_Whitesmiths);
607   CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU);
608   CHECK_PARSE("BreakBeforeBraces: WebKit", BreakBeforeBraces,
609               FormatStyle::BS_WebKit);
610   CHECK_PARSE("BreakBeforeBraces: Custom", BreakBeforeBraces,
611               FormatStyle::BS_Custom);
612 
613   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Never;
614   CHECK_PARSE("BraceWrapping:\n"
615               "  AfterControlStatement: MultiLine",
616               BraceWrapping.AfterControlStatement,
617               FormatStyle::BWACS_MultiLine);
618   CHECK_PARSE("BraceWrapping:\n"
619               "  AfterControlStatement: Always",
620               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
621   CHECK_PARSE("BraceWrapping:\n"
622               "  AfterControlStatement: Never",
623               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
624   // For backward compatibility:
625   CHECK_PARSE("BraceWrapping:\n"
626               "  AfterControlStatement: true",
627               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
628   CHECK_PARSE("BraceWrapping:\n"
629               "  AfterControlStatement: false",
630               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
631 
632   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
633   CHECK_PARSE("AlwaysBreakAfterReturnType: None", AlwaysBreakAfterReturnType,
634               FormatStyle::RTBS_None);
635   CHECK_PARSE("AlwaysBreakAfterReturnType: All", AlwaysBreakAfterReturnType,
636               FormatStyle::RTBS_All);
637   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevel",
638               AlwaysBreakAfterReturnType, FormatStyle::RTBS_TopLevel);
639   CHECK_PARSE("AlwaysBreakAfterReturnType: AllDefinitions",
640               AlwaysBreakAfterReturnType, FormatStyle::RTBS_AllDefinitions);
641   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevelDefinitions",
642               AlwaysBreakAfterReturnType,
643               FormatStyle::RTBS_TopLevelDefinitions);
644 
645   Style.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
646   CHECK_PARSE("AlwaysBreakTemplateDeclarations: No",
647               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_No);
648   CHECK_PARSE("AlwaysBreakTemplateDeclarations: MultiLine",
649               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
650   CHECK_PARSE("AlwaysBreakTemplateDeclarations: Yes",
651               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
652   CHECK_PARSE("AlwaysBreakTemplateDeclarations: false",
653               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
654   CHECK_PARSE("AlwaysBreakTemplateDeclarations: true",
655               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
656 
657   Style.AlwaysBreakAfterDefinitionReturnType = FormatStyle::DRTBS_All;
658   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: None",
659               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_None);
660   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: All",
661               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_All);
662   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: TopLevel",
663               AlwaysBreakAfterDefinitionReturnType,
664               FormatStyle::DRTBS_TopLevel);
665 
666   Style.NamespaceIndentation = FormatStyle::NI_All;
667   CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation,
668               FormatStyle::NI_None);
669   CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation,
670               FormatStyle::NI_Inner);
671   CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation,
672               FormatStyle::NI_All);
673 
674   Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_OnlyFirstIf;
675   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Never",
676               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
677   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: WithoutElse",
678               AllowShortIfStatementsOnASingleLine,
679               FormatStyle::SIS_WithoutElse);
680   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: OnlyFirstIf",
681               AllowShortIfStatementsOnASingleLine,
682               FormatStyle::SIS_OnlyFirstIf);
683   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: AllIfsAndElse",
684               AllowShortIfStatementsOnASingleLine,
685               FormatStyle::SIS_AllIfsAndElse);
686   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Always",
687               AllowShortIfStatementsOnASingleLine,
688               FormatStyle::SIS_OnlyFirstIf);
689   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: false",
690               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
691   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: true",
692               AllowShortIfStatementsOnASingleLine,
693               FormatStyle::SIS_WithoutElse);
694 
695   Style.IndentExternBlock = FormatStyle::IEBS_NoIndent;
696   CHECK_PARSE("IndentExternBlock: AfterExternBlock", IndentExternBlock,
697               FormatStyle::IEBS_AfterExternBlock);
698   CHECK_PARSE("IndentExternBlock: Indent", IndentExternBlock,
699               FormatStyle::IEBS_Indent);
700   CHECK_PARSE("IndentExternBlock: NoIndent", IndentExternBlock,
701               FormatStyle::IEBS_NoIndent);
702   CHECK_PARSE("IndentExternBlock: true", IndentExternBlock,
703               FormatStyle::IEBS_Indent);
704   CHECK_PARSE("IndentExternBlock: false", IndentExternBlock,
705               FormatStyle::IEBS_NoIndent);
706 
707   Style.BitFieldColonSpacing = FormatStyle::BFCS_None;
708   CHECK_PARSE("BitFieldColonSpacing: Both", BitFieldColonSpacing,
709               FormatStyle::BFCS_Both);
710   CHECK_PARSE("BitFieldColonSpacing: None", BitFieldColonSpacing,
711               FormatStyle::BFCS_None);
712   CHECK_PARSE("BitFieldColonSpacing: Before", BitFieldColonSpacing,
713               FormatStyle::BFCS_Before);
714   CHECK_PARSE("BitFieldColonSpacing: After", BitFieldColonSpacing,
715               FormatStyle::BFCS_After);
716 
717   Style.SortJavaStaticImport = FormatStyle::SJSIO_Before;
718   CHECK_PARSE("SortJavaStaticImport: After", SortJavaStaticImport,
719               FormatStyle::SJSIO_After);
720   CHECK_PARSE("SortJavaStaticImport: Before", SortJavaStaticImport,
721               FormatStyle::SJSIO_Before);
722 
723   Style.SortUsingDeclarations = FormatStyle::SUD_LexicographicNumeric;
724   CHECK_PARSE("SortUsingDeclarations: Never", SortUsingDeclarations,
725               FormatStyle::SUD_Never);
726   CHECK_PARSE("SortUsingDeclarations: Lexicographic", SortUsingDeclarations,
727               FormatStyle::SUD_Lexicographic);
728   CHECK_PARSE("SortUsingDeclarations: LexicographicNumeric",
729               SortUsingDeclarations, FormatStyle::SUD_LexicographicNumeric);
730   // For backward compatibility:
731   CHECK_PARSE("SortUsingDeclarations: false", SortUsingDeclarations,
732               FormatStyle::SUD_Never);
733   CHECK_PARSE("SortUsingDeclarations: true", SortUsingDeclarations,
734               FormatStyle::SUD_LexicographicNumeric);
735 
736   // FIXME: This is required because parsing a configuration simply overwrites
737   // the first N elements of the list instead of resetting it.
738   Style.ForEachMacros.clear();
739   std::vector<std::string> BoostForeach;
740   BoostForeach.push_back("BOOST_FOREACH");
741   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach);
742   std::vector<std::string> BoostAndQForeach;
743   BoostAndQForeach.push_back("BOOST_FOREACH");
744   BoostAndQForeach.push_back("Q_FOREACH");
745   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros,
746               BoostAndQForeach);
747 
748   Style.IfMacros.clear();
749   std::vector<std::string> CustomIfs;
750   CustomIfs.push_back("MYIF");
751   CHECK_PARSE("IfMacros: [MYIF]", IfMacros, CustomIfs);
752 
753   Style.AttributeMacros.clear();
754   CHECK_PARSE("BasedOnStyle: LLVM", AttributeMacros,
755               std::vector<std::string>{"__capability"});
756   CHECK_PARSE("AttributeMacros: [attr1, attr2]", AttributeMacros,
757               std::vector<std::string>({"attr1", "attr2"}));
758 
759   Style.StatementAttributeLikeMacros.clear();
760   CHECK_PARSE("StatementAttributeLikeMacros: [emit,Q_EMIT]",
761               StatementAttributeLikeMacros,
762               std::vector<std::string>({"emit", "Q_EMIT"}));
763 
764   Style.StatementMacros.clear();
765   CHECK_PARSE("StatementMacros: [QUNUSED]", StatementMacros,
766               std::vector<std::string>{"QUNUSED"});
767   CHECK_PARSE("StatementMacros: [QUNUSED, QT_REQUIRE_VERSION]", StatementMacros,
768               std::vector<std::string>({"QUNUSED", "QT_REQUIRE_VERSION"}));
769 
770   Style.NamespaceMacros.clear();
771   CHECK_PARSE("NamespaceMacros: [TESTSUITE]", NamespaceMacros,
772               std::vector<std::string>{"TESTSUITE"});
773   CHECK_PARSE("NamespaceMacros: [TESTSUITE, SUITE]", NamespaceMacros,
774               std::vector<std::string>({"TESTSUITE", "SUITE"}));
775 
776   Style.WhitespaceSensitiveMacros.clear();
777   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE]",
778               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
779   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE, ASSERT]",
780               WhitespaceSensitiveMacros,
781               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
782   Style.WhitespaceSensitiveMacros.clear();
783   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE']",
784               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
785   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE', 'ASSERT']",
786               WhitespaceSensitiveMacros,
787               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
788 
789   Style.IncludeStyle.IncludeCategories.clear();
790   std::vector<tooling::IncludeStyle::IncludeCategory> ExpectedCategories = {
791       {"abc/.*", 2, 0, false}, {".*", 1, 0, true}};
792   CHECK_PARSE("IncludeCategories:\n"
793               "  - Regex: abc/.*\n"
794               "    Priority: 2\n"
795               "  - Regex: .*\n"
796               "    Priority: 1\n"
797               "    CaseSensitive: true\n",
798               IncludeStyle.IncludeCategories, ExpectedCategories);
799   CHECK_PARSE("IncludeIsMainRegex: 'abc$'", IncludeStyle.IncludeIsMainRegex,
800               "abc$");
801   CHECK_PARSE("IncludeIsMainSourceRegex: 'abc$'",
802               IncludeStyle.IncludeIsMainSourceRegex, "abc$");
803 
804   Style.SortIncludes = FormatStyle::SI_Never;
805   CHECK_PARSE("SortIncludes: true", SortIncludes,
806               FormatStyle::SI_CaseSensitive);
807   CHECK_PARSE("SortIncludes: false", SortIncludes, FormatStyle::SI_Never);
808   CHECK_PARSE("SortIncludes: CaseInsensitive", SortIncludes,
809               FormatStyle::SI_CaseInsensitive);
810   CHECK_PARSE("SortIncludes: CaseSensitive", SortIncludes,
811               FormatStyle::SI_CaseSensitive);
812   CHECK_PARSE("SortIncludes: Never", SortIncludes, FormatStyle::SI_Never);
813 
814   Style.RawStringFormats.clear();
815   std::vector<FormatStyle::RawStringFormat> ExpectedRawStringFormats = {
816       {
817           FormatStyle::LK_TextProto,
818           {"pb", "proto"},
819           {"PARSE_TEXT_PROTO"},
820           /*CanonicalDelimiter=*/"",
821           "llvm",
822       },
823       {
824           FormatStyle::LK_Cpp,
825           {"cc", "cpp"},
826           {"C_CODEBLOCK", "CPPEVAL"},
827           /*CanonicalDelimiter=*/"cc",
828           /*BasedOnStyle=*/"",
829       },
830   };
831 
832   CHECK_PARSE("RawStringFormats:\n"
833               "  - Language: TextProto\n"
834               "    Delimiters:\n"
835               "      - 'pb'\n"
836               "      - 'proto'\n"
837               "    EnclosingFunctions:\n"
838               "      - 'PARSE_TEXT_PROTO'\n"
839               "    BasedOnStyle: llvm\n"
840               "  - Language: Cpp\n"
841               "    Delimiters:\n"
842               "      - 'cc'\n"
843               "      - 'cpp'\n"
844               "    EnclosingFunctions:\n"
845               "      - 'C_CODEBLOCK'\n"
846               "      - 'CPPEVAL'\n"
847               "    CanonicalDelimiter: 'cc'",
848               RawStringFormats, ExpectedRawStringFormats);
849 
850   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
851               "  Minimum: 0\n"
852               "  Maximum: 0",
853               SpacesInLineCommentPrefix.Minimum, 0u);
854   EXPECT_EQ(Style.SpacesInLineCommentPrefix.Maximum, 0u);
855   Style.SpacesInLineCommentPrefix.Minimum = 1;
856   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
857               "  Minimum: 2",
858               SpacesInLineCommentPrefix.Minimum, 0u);
859   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
860               "  Maximum: -1",
861               SpacesInLineCommentPrefix.Maximum, -1u);
862   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
863               "  Minimum: 2",
864               SpacesInLineCommentPrefix.Minimum, 2u);
865   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
866               "  Maximum: 1",
867               SpacesInLineCommentPrefix.Maximum, 1u);
868   EXPECT_EQ(Style.SpacesInLineCommentPrefix.Minimum, 1u);
869 
870   Style.SpacesInAngles = FormatStyle::SIAS_Always;
871   CHECK_PARSE("SpacesInAngles: Never", SpacesInAngles, FormatStyle::SIAS_Never);
872   CHECK_PARSE("SpacesInAngles: Always", SpacesInAngles,
873               FormatStyle::SIAS_Always);
874   CHECK_PARSE("SpacesInAngles: Leave", SpacesInAngles, FormatStyle::SIAS_Leave);
875   // For backward compatibility:
876   CHECK_PARSE("SpacesInAngles: false", SpacesInAngles, FormatStyle::SIAS_Never);
877   CHECK_PARSE("SpacesInAngles: true", SpacesInAngles, FormatStyle::SIAS_Always);
878 
879   CHECK_PARSE("RequiresClausePosition: WithPreceding", RequiresClausePosition,
880               FormatStyle::RCPS_WithPreceding);
881   CHECK_PARSE("RequiresClausePosition: WithFollowing", RequiresClausePosition,
882               FormatStyle::RCPS_WithFollowing);
883   CHECK_PARSE("RequiresClausePosition: SingleLine", RequiresClausePosition,
884               FormatStyle::RCPS_SingleLine);
885   CHECK_PARSE("RequiresClausePosition: OwnLine", RequiresClausePosition,
886               FormatStyle::RCPS_OwnLine);
887 
888   CHECK_PARSE("BreakBeforeConceptDeclarations: Never",
889               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Never);
890   CHECK_PARSE("BreakBeforeConceptDeclarations: Always",
891               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Always);
892   CHECK_PARSE("BreakBeforeConceptDeclarations: Allowed",
893               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Allowed);
894   // For backward compatibility:
895   CHECK_PARSE("BreakBeforeConceptDeclarations: true",
896               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Always);
897   CHECK_PARSE("BreakBeforeConceptDeclarations: false",
898               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Allowed);
899 
900   CHECK_PARSE("BreakAfterAttributes: Always", BreakAfterAttributes,
901               FormatStyle::ABS_Always);
902   CHECK_PARSE("BreakAfterAttributes: Leave", BreakAfterAttributes,
903               FormatStyle::ABS_Leave);
904   CHECK_PARSE("BreakAfterAttributes: Never", BreakAfterAttributes,
905               FormatStyle::ABS_Never);
906 
907   const auto DefaultLineEnding = FormatStyle::LE_DeriveLF;
908   CHECK_PARSE("LineEnding: LF", LineEnding, FormatStyle::LE_LF);
909   CHECK_PARSE("LineEnding: CRLF", LineEnding, FormatStyle::LE_CRLF);
910   CHECK_PARSE("LineEnding: DeriveCRLF", LineEnding, FormatStyle::LE_DeriveCRLF);
911   CHECK_PARSE("LineEnding: DeriveLF", LineEnding, DefaultLineEnding);
912   // For backward compatibility:
913   CHECK_PARSE("DeriveLineEnding: false", LineEnding, FormatStyle::LE_LF);
914   Style.LineEnding = DefaultLineEnding;
915   CHECK_PARSE("DeriveLineEnding: false\n"
916               "UseCRLF: true",
917               LineEnding, FormatStyle::LE_CRLF);
918   Style.LineEnding = DefaultLineEnding;
919   CHECK_PARSE("UseCRLF: true", LineEnding, FormatStyle::LE_DeriveCRLF);
920 
921   CHECK_PARSE("RemoveParentheses: MultipleParentheses", RemoveParentheses,
922               FormatStyle::RPS_MultipleParentheses);
923   CHECK_PARSE("RemoveParentheses: ReturnStatement", RemoveParentheses,
924               FormatStyle::RPS_ReturnStatement);
925   CHECK_PARSE("RemoveParentheses: Leave", RemoveParentheses,
926               FormatStyle::RPS_Leave);
927 }
928 
929 TEST(ConfigParseTest, ParsesConfigurationWithLanguages) {
930   FormatStyle Style = {};
931   Style.Language = FormatStyle::LK_Cpp;
932   CHECK_PARSE("Language: Cpp\n"
933               "IndentWidth: 12",
934               IndentWidth, 12u);
935   EXPECT_EQ(parseConfiguration("Language: JavaScript\n"
936                                "IndentWidth: 34",
937                                &Style),
938             ParseError::Unsuitable);
939   FormatStyle BinPackedTCS = {};
940   BinPackedTCS.Language = FormatStyle::LK_JavaScript;
941   EXPECT_EQ(parseConfiguration("BinPackArguments: true\n"
942                                "InsertTrailingCommas: Wrapped",
943                                &BinPackedTCS),
944             ParseError::BinPackTrailingCommaConflict);
945   EXPECT_EQ(12u, Style.IndentWidth);
946   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
947   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
948 
949   Style.Language = FormatStyle::LK_JavaScript;
950   CHECK_PARSE("Language: JavaScript\n"
951               "IndentWidth: 12",
952               IndentWidth, 12u);
953   CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u);
954   EXPECT_EQ(parseConfiguration("Language: Cpp\n"
955                                "IndentWidth: 34",
956                                &Style),
957             ParseError::Unsuitable);
958   EXPECT_EQ(23u, Style.IndentWidth);
959   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
960   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
961 
962   CHECK_PARSE("BasedOnStyle: LLVM\n"
963               "IndentWidth: 67",
964               IndentWidth, 67u);
965 
966   CHECK_PARSE("---\n"
967               "Language: JavaScript\n"
968               "IndentWidth: 12\n"
969               "---\n"
970               "Language: Cpp\n"
971               "IndentWidth: 34\n"
972               "...\n",
973               IndentWidth, 12u);
974 
975   Style.Language = FormatStyle::LK_Cpp;
976   CHECK_PARSE("---\n"
977               "Language: JavaScript\n"
978               "IndentWidth: 12\n"
979               "---\n"
980               "Language: Cpp\n"
981               "IndentWidth: 34\n"
982               "...\n",
983               IndentWidth, 34u);
984   CHECK_PARSE("---\n"
985               "IndentWidth: 78\n"
986               "---\n"
987               "Language: JavaScript\n"
988               "IndentWidth: 56\n"
989               "...\n",
990               IndentWidth, 78u);
991 
992   Style.ColumnLimit = 123;
993   Style.IndentWidth = 234;
994   Style.BreakBeforeBraces = FormatStyle::BS_Linux;
995   Style.TabWidth = 345;
996   EXPECT_FALSE(parseConfiguration("---\n"
997                                   "IndentWidth: 456\n"
998                                   "BreakBeforeBraces: Allman\n"
999                                   "---\n"
1000                                   "Language: JavaScript\n"
1001                                   "IndentWidth: 111\n"
1002                                   "TabWidth: 111\n"
1003                                   "---\n"
1004                                   "Language: Cpp\n"
1005                                   "BreakBeforeBraces: Stroustrup\n"
1006                                   "TabWidth: 789\n"
1007                                   "...\n",
1008                                   &Style));
1009   EXPECT_EQ(123u, Style.ColumnLimit);
1010   EXPECT_EQ(456u, Style.IndentWidth);
1011   EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces);
1012   EXPECT_EQ(789u, Style.TabWidth);
1013 
1014   EXPECT_EQ(parseConfiguration("---\n"
1015                                "Language: JavaScript\n"
1016                                "IndentWidth: 56\n"
1017                                "---\n"
1018                                "IndentWidth: 78\n"
1019                                "...\n",
1020                                &Style),
1021             ParseError::Error);
1022   EXPECT_EQ(parseConfiguration("---\n"
1023                                "Language: JavaScript\n"
1024                                "IndentWidth: 56\n"
1025                                "---\n"
1026                                "Language: JavaScript\n"
1027                                "IndentWidth: 78\n"
1028                                "...\n",
1029                                &Style),
1030             ParseError::Error);
1031 
1032   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
1033 
1034   Style.Language = FormatStyle::LK_Verilog;
1035   CHECK_PARSE("---\n"
1036               "Language: Verilog\n"
1037               "IndentWidth: 12\n"
1038               "---\n"
1039               "Language: Cpp\n"
1040               "IndentWidth: 34\n"
1041               "...\n",
1042               IndentWidth, 12u);
1043   CHECK_PARSE("---\n"
1044               "IndentWidth: 78\n"
1045               "---\n"
1046               "Language: Verilog\n"
1047               "IndentWidth: 56\n"
1048               "...\n",
1049               IndentWidth, 56u);
1050 }
1051 
1052 TEST(ConfigParseTest, UsesLanguageForBasedOnStyle) {
1053   FormatStyle Style = {};
1054   Style.Language = FormatStyle::LK_JavaScript;
1055   Style.BreakBeforeTernaryOperators = true;
1056   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value());
1057   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
1058 
1059   Style.BreakBeforeTernaryOperators = true;
1060   EXPECT_EQ(0, parseConfiguration("---\n"
1061                                   "BasedOnStyle: Google\n"
1062                                   "---\n"
1063                                   "Language: JavaScript\n"
1064                                   "IndentWidth: 76\n"
1065                                   "...\n",
1066                                   &Style)
1067                    .value());
1068   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
1069   EXPECT_EQ(76u, Style.IndentWidth);
1070   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
1071 }
1072 
1073 TEST(ConfigParseTest, ConfigurationRoundTripTest) {
1074   FormatStyle Style = getLLVMStyle();
1075   std::string YAML = configurationAsText(Style);
1076   FormatStyle ParsedStyle = {};
1077   ParsedStyle.Language = FormatStyle::LK_Cpp;
1078   EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value());
1079   EXPECT_EQ(Style, ParsedStyle);
1080 }
1081 
1082 TEST(ConfigParseTest, GetStyleWithEmptyFileName) {
1083   llvm::vfs::InMemoryFileSystem FS;
1084   auto Style1 = getStyle("file", "", "Google", "", &FS);
1085   ASSERT_TRUE((bool)Style1);
1086   ASSERT_EQ(*Style1, getGoogleStyle());
1087 }
1088 
1089 TEST(ConfigParseTest, GetStyleOfFile) {
1090   llvm::vfs::InMemoryFileSystem FS;
1091   // Test 1: format file in the same directory.
1092   ASSERT_TRUE(
1093       FS.addFile("/a/.clang-format", 0,
1094                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM")));
1095   ASSERT_TRUE(
1096       FS.addFile("/a/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
1097   auto Style1 = getStyle("file", "/a/.clang-format", "Google", "", &FS);
1098   ASSERT_TRUE((bool)Style1);
1099   ASSERT_EQ(*Style1, getLLVMStyle());
1100 
1101   // Test 2.1: fallback to default.
1102   ASSERT_TRUE(
1103       FS.addFile("/b/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
1104   auto Style2 = getStyle("file", "/b/test.cpp", "Mozilla", "", &FS);
1105   ASSERT_TRUE((bool)Style2);
1106   ASSERT_EQ(*Style2, getMozillaStyle());
1107 
1108   // Test 2.2: no format on 'none' fallback style.
1109   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
1110   ASSERT_TRUE((bool)Style2);
1111   ASSERT_EQ(*Style2, getNoStyle());
1112 
1113   // Test 2.3: format if config is found with no based style while fallback is
1114   // 'none'.
1115   ASSERT_TRUE(FS.addFile("/b/.clang-format", 0,
1116                          llvm::MemoryBuffer::getMemBuffer("IndentWidth: 2")));
1117   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
1118   ASSERT_TRUE((bool)Style2);
1119   ASSERT_EQ(*Style2, getLLVMStyle());
1120 
1121   // Test 2.4: format if yaml with no based style, while fallback is 'none'.
1122   Style2 = getStyle("{}", "a.h", "none", "", &FS);
1123   ASSERT_TRUE((bool)Style2);
1124   ASSERT_EQ(*Style2, getLLVMStyle());
1125 
1126   // Test 3: format file in parent directory.
1127   ASSERT_TRUE(
1128       FS.addFile("/c/.clang-format", 0,
1129                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
1130   ASSERT_TRUE(FS.addFile("/c/sub/sub/sub/test.cpp", 0,
1131                          llvm::MemoryBuffer::getMemBuffer("int i;")));
1132   auto Style3 = getStyle("file", "/c/sub/sub/sub/test.cpp", "LLVM", "", &FS);
1133   ASSERT_TRUE((bool)Style3);
1134   ASSERT_EQ(*Style3, getGoogleStyle());
1135 
1136   // Test 4: error on invalid fallback style
1137   auto Style4 = getStyle("file", "a.h", "KungFu", "", &FS);
1138   ASSERT_FALSE((bool)Style4);
1139   llvm::consumeError(Style4.takeError());
1140 
1141   // Test 5: error on invalid yaml on command line
1142   auto Style5 = getStyle("{invalid_key=invalid_value}", "a.h", "LLVM", "", &FS);
1143   ASSERT_FALSE((bool)Style5);
1144   llvm::consumeError(Style5.takeError());
1145 
1146   // Test 6: error on invalid style
1147   auto Style6 = getStyle("KungFu", "a.h", "LLVM", "", &FS);
1148   ASSERT_FALSE((bool)Style6);
1149   llvm::consumeError(Style6.takeError());
1150 
1151   // Test 7: found config file, error on parsing it
1152   ASSERT_TRUE(
1153       FS.addFile("/d/.clang-format", 0,
1154                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM\n"
1155                                                   "InvalidKey: InvalidValue")));
1156   ASSERT_TRUE(
1157       FS.addFile("/d/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
1158   auto Style7a = getStyle("file", "/d/.clang-format", "LLVM", "", &FS);
1159   ASSERT_FALSE((bool)Style7a);
1160   llvm::consumeError(Style7a.takeError());
1161 
1162   auto Style7b = getStyle("file", "/d/.clang-format", "LLVM", "", &FS, true);
1163   ASSERT_TRUE((bool)Style7b);
1164 
1165   // Test 8: inferred per-language defaults apply.
1166   auto StyleTd = getStyle("file", "x.td", "llvm", "", &FS);
1167   ASSERT_TRUE((bool)StyleTd);
1168   ASSERT_EQ(*StyleTd, getLLVMStyle(FormatStyle::LK_TableGen));
1169 
1170   // Test 9.1.1: overwriting a file style, when no parent file exists with no
1171   // fallback style.
1172   ASSERT_TRUE(FS.addFile(
1173       "/e/sub/.clang-format", 0,
1174       llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: InheritParentConfig\n"
1175                                        "ColumnLimit: 20")));
1176   ASSERT_TRUE(FS.addFile("/e/sub/code.cpp", 0,
1177                          llvm::MemoryBuffer::getMemBuffer("int i;")));
1178   auto Style9 = getStyle("file", "/e/sub/code.cpp", "none", "", &FS);
1179   ASSERT_TRUE(static_cast<bool>(Style9));
1180   ASSERT_EQ(*Style9, [] {
1181     auto Style = getNoStyle();
1182     Style.ColumnLimit = 20;
1183     return Style;
1184   }());
1185 
1186   // Test 9.1.2: propagate more than one level with no parent file.
1187   ASSERT_TRUE(FS.addFile("/e/sub/sub/code.cpp", 0,
1188                          llvm::MemoryBuffer::getMemBuffer("int i;")));
1189   ASSERT_TRUE(FS.addFile("/e/sub/sub/.clang-format", 0,
1190                          llvm::MemoryBuffer::getMemBuffer(
1191                              "BasedOnStyle: InheritParentConfig\n"
1192                              "WhitespaceSensitiveMacros: ['FOO', 'BAR']")));
1193   std::vector<std::string> NonDefaultWhiteSpaceMacros =
1194       Style9->WhitespaceSensitiveMacros;
1195   NonDefaultWhiteSpaceMacros[0] = "FOO";
1196   NonDefaultWhiteSpaceMacros[1] = "BAR";
1197 
1198   ASSERT_NE(Style9->WhitespaceSensitiveMacros, NonDefaultWhiteSpaceMacros);
1199   Style9 = getStyle("file", "/e/sub/sub/code.cpp", "none", "", &FS);
1200   ASSERT_TRUE(static_cast<bool>(Style9));
1201   ASSERT_EQ(*Style9, [&NonDefaultWhiteSpaceMacros] {
1202     auto Style = getNoStyle();
1203     Style.ColumnLimit = 20;
1204     Style.WhitespaceSensitiveMacros = NonDefaultWhiteSpaceMacros;
1205     return Style;
1206   }());
1207 
1208   // Test 9.2: with LLVM fallback style
1209   Style9 = getStyle("file", "/e/sub/code.cpp", "LLVM", "", &FS);
1210   ASSERT_TRUE(static_cast<bool>(Style9));
1211   ASSERT_EQ(*Style9, [] {
1212     auto Style = getLLVMStyle();
1213     Style.ColumnLimit = 20;
1214     return Style;
1215   }());
1216 
1217   // Test 9.3: with a parent file
1218   ASSERT_TRUE(
1219       FS.addFile("/e/.clang-format", 0,
1220                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google\n"
1221                                                   "UseTab: Always")));
1222   Style9 = getStyle("file", "/e/sub/code.cpp", "none", "", &FS);
1223   ASSERT_TRUE(static_cast<bool>(Style9));
1224   ASSERT_EQ(*Style9, [] {
1225     auto Style = getGoogleStyle();
1226     Style.ColumnLimit = 20;
1227     Style.UseTab = FormatStyle::UT_Always;
1228     return Style;
1229   }());
1230 
1231   // Test 9.4: propagate more than one level with a parent file.
1232   const auto SubSubStyle = [&NonDefaultWhiteSpaceMacros] {
1233     auto Style = getGoogleStyle();
1234     Style.ColumnLimit = 20;
1235     Style.UseTab = FormatStyle::UT_Always;
1236     Style.WhitespaceSensitiveMacros = NonDefaultWhiteSpaceMacros;
1237     return Style;
1238   }();
1239 
1240   ASSERT_NE(Style9->WhitespaceSensitiveMacros, NonDefaultWhiteSpaceMacros);
1241   Style9 = getStyle("file", "/e/sub/sub/code.cpp", "none", "", &FS);
1242   ASSERT_TRUE(static_cast<bool>(Style9));
1243   ASSERT_EQ(*Style9, SubSubStyle);
1244 
1245   // Test 9.5: use InheritParentConfig as style name
1246   Style9 =
1247       getStyle("inheritparentconfig", "/e/sub/sub/code.cpp", "none", "", &FS);
1248   ASSERT_TRUE(static_cast<bool>(Style9));
1249   ASSERT_EQ(*Style9, SubSubStyle);
1250 
1251   // Test 9.6: use command line style with inheritance
1252   Style9 = getStyle("{BasedOnStyle: InheritParentConfig}",
1253                     "/e/sub/sub/code.cpp", "none", "", &FS);
1254   ASSERT_TRUE(static_cast<bool>(Style9));
1255   ASSERT_EQ(*Style9, SubSubStyle);
1256 
1257   // Test 9.7: use command line style with inheritance and own config
1258   Style9 = getStyle("{BasedOnStyle: InheritParentConfig, "
1259                     "WhitespaceSensitiveMacros: ['FOO', 'BAR']}",
1260                     "/e/sub/code.cpp", "none", "", &FS);
1261   ASSERT_TRUE(static_cast<bool>(Style9));
1262   ASSERT_EQ(*Style9, SubSubStyle);
1263 
1264   // Test 9.8: use inheritance from a file without BasedOnStyle
1265   ASSERT_TRUE(FS.addFile("/e/withoutbase/.clang-format", 0,
1266                          llvm::MemoryBuffer::getMemBuffer("ColumnLimit: 123")));
1267   ASSERT_TRUE(
1268       FS.addFile("/e/withoutbase/sub/.clang-format", 0,
1269                  llvm::MemoryBuffer::getMemBuffer(
1270                      "BasedOnStyle: InheritParentConfig\nIndentWidth: 7")));
1271   // Make sure we do not use the fallback style
1272   Style9 = getStyle("file", "/e/withoutbase/code.cpp", "google", "", &FS);
1273   ASSERT_TRUE(static_cast<bool>(Style9));
1274   ASSERT_EQ(*Style9, [] {
1275     auto Style = getLLVMStyle();
1276     Style.ColumnLimit = 123;
1277     return Style;
1278   }());
1279 
1280   Style9 = getStyle("file", "/e/withoutbase/sub/code.cpp", "google", "", &FS);
1281   ASSERT_TRUE(static_cast<bool>(Style9));
1282   ASSERT_EQ(*Style9, [] {
1283     auto Style = getLLVMStyle();
1284     Style.ColumnLimit = 123;
1285     Style.IndentWidth = 7;
1286     return Style;
1287   }());
1288 
1289   // Test 9.9: use inheritance from a specific config file.
1290   Style9 = getStyle("file:/e/sub/sub/.clang-format", "/e/sub/sub/code.cpp",
1291                     "none", "", &FS);
1292   ASSERT_TRUE(static_cast<bool>(Style9));
1293   ASSERT_EQ(*Style9, SubSubStyle);
1294 }
1295 
1296 TEST(ConfigParseTest, GetStyleOfSpecificFile) {
1297   llvm::vfs::InMemoryFileSystem FS;
1298   // Specify absolute path to a format file in a parent directory.
1299   ASSERT_TRUE(
1300       FS.addFile("/e/.clang-format", 0,
1301                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM")));
1302   ASSERT_TRUE(
1303       FS.addFile("/e/explicit.clang-format", 0,
1304                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
1305   ASSERT_TRUE(FS.addFile("/e/sub/sub/sub/test.cpp", 0,
1306                          llvm::MemoryBuffer::getMemBuffer("int i;")));
1307   auto Style = getStyle("file:/e/explicit.clang-format",
1308                         "/e/sub/sub/sub/test.cpp", "LLVM", "", &FS);
1309   ASSERT_TRUE(static_cast<bool>(Style));
1310   ASSERT_EQ(*Style, getGoogleStyle());
1311 
1312   // Specify relative path to a format file.
1313   ASSERT_TRUE(
1314       FS.addFile("../../e/explicit.clang-format", 0,
1315                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
1316   Style = getStyle("file:../../e/explicit.clang-format",
1317                    "/e/sub/sub/sub/test.cpp", "LLVM", "", &FS);
1318   ASSERT_TRUE(static_cast<bool>(Style));
1319   ASSERT_EQ(*Style, getGoogleStyle());
1320 
1321   // Specify path to a format file that does not exist.
1322   Style = getStyle("file:/e/missing.clang-format", "/e/sub/sub/sub/test.cpp",
1323                    "LLVM", "", &FS);
1324   ASSERT_FALSE(static_cast<bool>(Style));
1325   llvm::consumeError(Style.takeError());
1326 
1327   // Specify path to a file on the filesystem.
1328   SmallString<128> FormatFilePath;
1329   std::error_code ECF = llvm::sys::fs::createTemporaryFile(
1330       "FormatFileTest", "tpl", FormatFilePath);
1331   EXPECT_FALSE((bool)ECF);
1332   llvm::raw_fd_ostream FormatFileTest(FormatFilePath, ECF);
1333   EXPECT_FALSE((bool)ECF);
1334   FormatFileTest << "BasedOnStyle: Google\n";
1335   FormatFileTest.close();
1336 
1337   SmallString<128> TestFilePath;
1338   std::error_code ECT =
1339       llvm::sys::fs::createTemporaryFile("CodeFileTest", "cc", TestFilePath);
1340   EXPECT_FALSE((bool)ECT);
1341   llvm::raw_fd_ostream CodeFileTest(TestFilePath, ECT);
1342   CodeFileTest << "int i;\n";
1343   CodeFileTest.close();
1344 
1345   std::string format_file_arg = std::string("file:") + FormatFilePath.c_str();
1346   Style = getStyle(format_file_arg, TestFilePath, "LLVM", "", nullptr);
1347 
1348   llvm::sys::fs::remove(FormatFilePath.c_str());
1349   llvm::sys::fs::remove(TestFilePath.c_str());
1350   ASSERT_TRUE(static_cast<bool>(Style));
1351   ASSERT_EQ(*Style, getGoogleStyle());
1352 }
1353 
1354 } // namespace
1355 } // namespace format
1356 } // namespace clang
1357