1 //===-- MemberwiseConstructorTests.cpp ------------------------------------===//
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 "TweakTesting.h"
10 #include "gmock/gmock-matchers.h"
11 #include "gmock/gmock.h"
12 #include "gtest/gtest.h"
13
14 namespace clang {
15 namespace clangd {
16 namespace {
17 using testing::AllOf;
18 using testing::Eq;
19 using testing::HasSubstr;
20 using testing::Not;
21
22 TWEAK_TEST(MemberwiseConstructor);
23
TEST_F(MemberwiseConstructorTest,Availability)24 TEST_F(MemberwiseConstructorTest, Availability) {
25 EXPECT_AVAILABLE("^struct ^S ^{ int x, y; };");
26 // Verify no crashes on incomplete member fields.
27 EXPECT_UNAVAILABLE("/*error-ok*/class Forward; class ^A { Forward f;}");
28 EXPECT_UNAVAILABLE("struct S { ^int ^x, y; }; struct ^S;");
29 EXPECT_UNAVAILABLE("struct ^S {};");
30 EXPECT_UNAVAILABLE("union ^S { int x; };");
31 EXPECT_UNAVAILABLE("struct ^S { int x = 0; };");
32 EXPECT_UNAVAILABLE("struct ^S { struct { int x; }; };");
33 EXPECT_UNAVAILABLE("struct ^{ int x; } e;");
34 }
35
TEST_F(MemberwiseConstructorTest,Edits)36 TEST_F(MemberwiseConstructorTest, Edits) {
37 Header = R"cpp(
38 struct Move {
39 Move(Move&&) = default;
40 Move(const Move&) = delete;
41 };
42 struct Copy {
43 Copy(Copy&&) = delete;
44 Copy(const Copy&);
45 };
46 )cpp";
47 EXPECT_EQ(apply("struct ^S{Move M; Copy C; int I; int J=4;};"),
48 "struct S{"
49 "S(Move M, const Copy &C, int I) : M(std::move(M)), C(C), I(I) {}\n"
50 "Move M; Copy C; int I; int J=4;};");
51 }
52
TEST_F(MemberwiseConstructorTest,FieldTreatment)53 TEST_F(MemberwiseConstructorTest, FieldTreatment) {
54 Header = R"cpp(
55 struct MoveOnly {
56 MoveOnly(MoveOnly&&) = default;
57 MoveOnly(const MoveOnly&) = delete;
58 };
59 struct CopyOnly {
60 CopyOnly(CopyOnly&&) = delete;
61 CopyOnly(const CopyOnly&);
62 };
63 struct CopyTrivial {
64 CopyTrivial(CopyTrivial&&) = default;
65 CopyTrivial(const CopyTrivial&) = default;
66 };
67 struct Immovable {
68 Immovable(Immovable&&) = delete;
69 Immovable(const Immovable&) = delete;
70 };
71 template <typename T>
72 struct Traits { using Type = typename T::Type; };
73 using IntAlias = int;
74 )cpp";
75
76 auto Fail = Eq("unavailable");
77 auto Move = HasSubstr(": Member(std::move(Member))");
78 auto CopyRef = AllOf(HasSubstr("S(const "), HasSubstr(": Member(Member)"));
79 auto Copy = AllOf(Not(HasSubstr("S(const ")), HasSubstr(": Member(Member)"));
80 auto With = [](llvm::StringRef Type) {
81 return ("struct ^S { " + Type + " Member; };").str();
82 };
83
84 EXPECT_THAT(apply(With("Immovable")), Fail);
85 EXPECT_THAT(apply(With("MoveOnly")), Move);
86 EXPECT_THAT(apply(With("CopyOnly")), CopyRef);
87 EXPECT_THAT(apply(With("CopyTrivial")), Copy);
88 EXPECT_THAT(apply(With("int")), Copy);
89 EXPECT_THAT(apply(With("IntAlias")), Copy);
90 EXPECT_THAT(apply(With("Immovable*")), Copy);
91 EXPECT_THAT(apply(With("Immovable&")), Copy);
92
93 EXPECT_THAT(apply("template <typename T>" + With("T")), Move);
94 EXPECT_THAT(apply("template <typename T>" + With("typename Traits<T>::Type")),
95 Move);
96 EXPECT_THAT(apply("template <typename T>" + With("T*")), Copy);
97 }
98
99 } // namespace
100 } // namespace clangd
101 } // namespace clang
102