xref: /llvm-project/clang-tools-extra/clangd/unittests/ASTSignalsTests.cpp (revision 042dd99484d6f393cc8a365def250e9d74c24d37)
1 //===-- ASTSignalsTests.cpp -------------------------------------*- C++ -*-===//
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 "ASTSignals.h"
10 #include "TestIndex.h"
11 #include "TestTU.h"
12 #include "llvm/ADT/StringRef.h"
13 #include "gmock/gmock.h"
14 #include "gtest/gtest.h"
15 
16 namespace clang {
17 namespace clangd {
18 namespace {
19 
20 using ::testing::_;
21 using ::testing::Pair;
22 using ::testing::UnorderedElementsAre;
23 
TEST(ASTSignals,Derive)24 TEST(ASTSignals, Derive) {
25   TestTU TU = TestTU::withCode(R"cpp(
26   namespace ns1 {
27   namespace ns2 {
28   namespace {
29   int func() {
30     tar::X a;
31     a.Y = 1;
32     return ADD(tar::kConst, a.Y, tar::foo()) + fooInNS2() + tar::foo();
33   }
34   } // namespace
35   } // namespace ns2
36   } // namespace ns1
37   )cpp");
38 
39   TU.HeaderCode = R"cpp(
40   #define ADD(x, y, z) (x + y + z)
41   namespace tar {  // A related namespace.
42   int kConst = 5;
43   int foo();
44   void bar();  // Unused symbols are not recorded.
45   class X {
46     public: int Y;
47   };
48   } // namespace tar
49   namespace ns1::ns2 { int fooInNS2(); }}
50   )cpp";
51   ASTSignals Signals = ASTSignals::derive(TU.build());
52   std::vector<std::pair<StringRef, int>> NS;
53   for (const auto &P : Signals.RelatedNamespaces)
54     NS.emplace_back(P.getKey(), P.getValue());
55   EXPECT_THAT(NS, UnorderedElementsAre(Pair("ns1::", 1), Pair("ns1::ns2::", 1),
56                                        Pair("tar::", /*foo, kConst, X*/ 3)));
57 
58   std::vector<std::pair<SymbolID, int>> Sym;
59   for (const auto &P : Signals.ReferencedSymbols)
60     Sym.emplace_back(P.getFirst(), P.getSecond());
61   EXPECT_THAT(
62       Sym,
63       UnorderedElementsAre(
64           Pair(ns("tar").ID, 4), Pair(ns("ns1").ID, 1),
65           Pair(ns("ns1::ns2").ID, 1), Pair(_ /*int func();*/, 1),
66           Pair(cls("tar::X").ID, 1), Pair(var("tar::kConst").ID, 1),
67           Pair(func("tar::foo").ID, 2), Pair(func("ns1::ns2::fooInNS2").ID, 1),
68           Pair(sym("Y", index::SymbolKind::Variable, "@N@tar@S@X@FI@\\0").ID,
69                2),
70           Pair(_ /*a*/, 3)));
71   EXPECT_EQ(Signals.InsertionDirective, Symbol::IncludeDirective::Include);
72 }
73 } // namespace
74 } // namespace clangd
75 } // namespace clang
76