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
16namespace clang {
17namespace clangd {
18namespace {
19
20using ::testing::_;
21using ::testing::Pair;
22using ::testing::UnorderedElementsAre;
23
24TEST(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}
72} // namespace
73} // namespace clangd
74} // namespace clang
75

source code of clang-tools-extra/clangd/unittests/ASTSignalsTests.cpp