RegistryTest.cpp revision f7f295f321fd434e1e542844a71f538a56f2f8fb 
1//===- unittest/ASTMatchers/Dynamic/RegistryTest.cpp - Registry unit tests -===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===-----------------------------------------------------------------------===//
9
10#include <vector>
11
12#include "../ASTMatchersTest.h"
13#include "clang/ASTMatchers/Dynamic/Registry.h"
14#include "gtest/gtest.h"
15
16namespace clang {
17namespace ast_matchers {
18namespace dynamic {
19namespace {
20
21using ast_matchers::internal::Matcher;
22
23DynTypedMatcher *constructMatcher(StringRef MatcherName, Diagnostics *Error) {
24  const std::vector<ParserValue> Args;
25  return Registry::constructMatcher(MatcherName, SourceRange(), Args, Error);
26}
27
28DynTypedMatcher *constructMatcher(StringRef MatcherName,
29                                  const VariantValue &Arg1,
30                                  Diagnostics *Error) {
31  std::vector<ParserValue> Args(1);
32  Args[0].Value = Arg1;
33  return Registry::constructMatcher(MatcherName, SourceRange(), Args, Error);
34}
35
36DynTypedMatcher *constructMatcher(StringRef MatcherName,
37                                  const VariantValue &Arg1,
38                                  const VariantValue &Arg2,
39                                  Diagnostics *Error) {
40  std::vector<ParserValue> Args(2);
41  Args[0].Value = Arg1;
42  Args[1].Value = Arg2;
43  return Registry::constructMatcher(MatcherName, SourceRange(), Args, Error);
44}
45
46TEST(RegistryTest, CanConstructNoArgs) {
47  OwningPtr<DynTypedMatcher> IsArrowValue(constructMatcher("isArrow", NULL));
48  OwningPtr<DynTypedMatcher> BoolValue(constructMatcher("boolLiteral", NULL));
49
50  const std::string ClassSnippet = "struct Foo { int x; };\n"
51                                   "Foo *foo = new Foo;\n"
52                                   "int i = foo->x;\n";
53  const std::string BoolSnippet = "bool Foo = true;\n";
54
55  EXPECT_TRUE(matchesDynamic(ClassSnippet, *IsArrowValue));
56  EXPECT_TRUE(matchesDynamic(BoolSnippet, *BoolValue));
57  EXPECT_FALSE(matchesDynamic(ClassSnippet, *BoolValue));
58  EXPECT_FALSE(matchesDynamic(BoolSnippet, *IsArrowValue));
59}
60
61TEST(RegistryTest, ConstructWithSimpleArgs) {
62  OwningPtr<DynTypedMatcher> Value(
63      constructMatcher("hasName", std::string("X"), NULL));
64  EXPECT_TRUE(matchesDynamic("class X {};", *Value));
65  EXPECT_FALSE(matchesDynamic("int x;", *Value));
66}
67
68TEST(RegistryTest, ConstructWithMatcherArgs) {
69  OwningPtr<DynTypedMatcher> HasInitializerSimple(
70      constructMatcher("hasInitializer", stmt(), NULL));
71  OwningPtr<DynTypedMatcher> HasInitializerComplex(
72      constructMatcher("hasInitializer", callExpr(), NULL));
73
74  std::string code = "int i;";
75  EXPECT_FALSE(matchesDynamic(code, *HasInitializerSimple));
76  EXPECT_FALSE(matchesDynamic(code, *HasInitializerComplex));
77
78  code = "int i = 1;";
79  EXPECT_TRUE(matchesDynamic(code, *HasInitializerSimple));
80  EXPECT_FALSE(matchesDynamic(code, *HasInitializerComplex));
81
82  code = "int y(); int i = y();";
83  EXPECT_TRUE(matchesDynamic(code, *HasInitializerSimple));
84  EXPECT_TRUE(matchesDynamic(code, *HasInitializerComplex));
85}
86
87TEST(RegistryTest, Errors) {
88  // Incorrect argument count.
89  OwningPtr<Diagnostics> Error(new Diagnostics());
90  EXPECT_TRUE(NULL == constructMatcher("hasInitializer", Error.get()));
91  EXPECT_EQ("Incorrect argument count. (Expected = 1) != (Actual = 0)",
92            Error->ToString());
93  Error.reset(new Diagnostics());
94  EXPECT_TRUE(NULL == constructMatcher("isArrow", std::string(), Error.get()));
95  EXPECT_EQ("Incorrect argument count. (Expected = 0) != (Actual = 1)",
96            Error->ToString());
97
98  // Bad argument type
99  Error.reset(new Diagnostics());
100  EXPECT_TRUE(NULL == constructMatcher("ofClass", std::string(), Error.get()));
101  EXPECT_EQ("Incorrect type on function ofClass for arg 1.", Error->ToString());
102  Error.reset(new Diagnostics());
103  EXPECT_TRUE(NULL == constructMatcher("recordDecl", recordDecl(),
104                                       ::std::string(), Error.get()));
105  EXPECT_EQ("Incorrect type on function recordDecl for arg 2.",
106            Error->ToString());
107}
108
109} // end anonymous namespace
110} // end namespace dynamic
111} // end namespace ast_matchers
112} // end namespace clang
113