NamespaceAliaserTest.cpp
4.46 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
//===---- NamespaceAliaserTest.cpp - clang-tidy
//----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "../clang-tidy/utils/NamespaceAliaser.h"
#include "ClangTidyTest.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "gtest/gtest.h"
namespace clang {
namespace tidy {
namespace utils {
// This checker is for testing only. It can only run on one test case
// (e.g. with one SourceManager).
class InsertAliasCheck : public ClangTidyCheck {
public:
InsertAliasCheck(StringRef Name, ClangTidyContext *Context)
:ClangTidyCheck(Name, Context) {}
void registerMatchers(ast_matchers::MatchFinder *Finder) override {
Finder->addMatcher(ast_matchers::callExpr().bind("foo"), this);
}
void check(const ast_matchers::MatchFinder::MatchResult &Result) override {
if (!Aliaser)
Aliaser.reset(new NamespaceAliaser(*Result.SourceManager));
const auto *Call = Result.Nodes.getNodeAs<CallExpr>("foo");
assert(Call != nullptr && "Did not find node \"foo\"");
auto Hint = Aliaser->createAlias(*Result.Context, *Call, "::foo::bar",
{"b", "some_alias"});
if (Hint.hasValue())
diag(Call->getBeginLoc(), "Fix for testing") << Hint.getValue();
diag(Call->getBeginLoc(), "insert call") << FixItHint::CreateInsertion(
Call->getBeginLoc(),
Aliaser->getNamespaceName(*Result.Context, *Call, "::foo::bar") + "::");
}
private:
std::unique_ptr<NamespaceAliaser> Aliaser;
};
template <typename Check>
std::string runChecker(StringRef Code, unsigned ExpectedWarningCount) {
std::map<StringRef, StringRef> AdditionalFileContents = {{"foo.h",
"namespace foo {\n"
"namespace bar {\n"
"}\n"
"void func() { }\n"
"}"}};
std::vector<ClangTidyError> errors;
std::string result =
test::runCheckOnCode<Check>(Code, &errors, "foo.cc", None,
ClangTidyOptions(), AdditionalFileContents);
EXPECT_EQ(ExpectedWarningCount, errors.size());
return result;
}
TEST(NamespaceAliaserTest, AddNewAlias) {
EXPECT_EQ("#include \"foo.h\"\n"
"void f() {\n"
"namespace b = ::foo::bar;"
" b::f(); }",
runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
"void f() { f(); }",
2));
}
TEST(NamespaceAliaserTest, ReuseAlias) {
EXPECT_EQ(
"#include \"foo.h\"\n"
"void f() { namespace x = foo::bar; x::f(); }",
runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
"void f() { namespace x = foo::bar; f(); }",
1));
}
TEST(NamespaceAliaserTest, AddsOnlyOneAlias) {
EXPECT_EQ("#include \"foo.h\"\n"
"void f() {\n"
"namespace b = ::foo::bar;"
" b::f(); b::f(); }",
runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
"void f() { f(); f(); }",
3));
}
TEST(NamespaceAliaserTest, LocalConflict) {
EXPECT_EQ("#include \"foo.h\"\n"
"void f() {\n"
"namespace some_alias = ::foo::bar;"
" namespace b = foo; some_alias::f(); }",
runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
"void f() { namespace b = foo; f(); }",
2));
}
TEST(NamespaceAliaserTest, GlobalConflict) {
EXPECT_EQ("#include \"foo.h\"\n"
"namespace b = foo;\n"
"void f() {\n"
"namespace some_alias = ::foo::bar;"
" some_alias::f(); }",
runChecker<InsertAliasCheck>("#include \"foo.h\"\n"
"namespace b = foo;\n"
"void f() { f(); }",
2));
}
} // namespace utils
} // namespace tidy
} // namespace clang