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//===- unittest/ASTMatchers/Dynamic/VariantValueTest.cpp - VariantValue unit tests -===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===-----------------------------------------------------------------------------===//
#include "../ASTMatchersTest.h"
#include "clang/ASTMatchers/Dynamic/VariantValue.h"
#include "gtest/gtest.h"
namespace clang {
namespace ast_matchers {
namespace dynamic {
namespace {
using ast_matchers::internal::DynTypedMatcher;
using ast_matchers::internal::Matcher;
TEST(VariantValueTest, Unsigned) {
const unsigned kUnsigned = 17;
VariantValue Value = kUnsigned;
EXPECT_TRUE(Value.isUnsigned());
EXPECT_EQ(kUnsigned, Value.getUnsigned());
EXPECT_TRUE(Value.hasValue());
EXPECT_FALSE(Value.isString());
EXPECT_FALSE(Value.isMatcher());
}
TEST(VariantValueTest, String) {
const ::std::string kString = "string";
VariantValue Value = kString;
EXPECT_TRUE(Value.isString());
EXPECT_EQ(kString, Value.getString());
EXPECT_EQ("String", Value.getTypeAsString());
EXPECT_TRUE(Value.hasValue());
EXPECT_FALSE(Value.isUnsigned());
EXPECT_FALSE(Value.isMatcher());
}
TEST(VariantValueTest, DynTypedMatcher) {
VariantValue Value = VariantMatcher::SingleMatcher(stmt());
EXPECT_TRUE(Value.hasValue());
EXPECT_FALSE(Value.isUnsigned());
EXPECT_FALSE(Value.isString());
EXPECT_TRUE(Value.isMatcher());
EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<Decl>());
EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<UnaryOperator>());
EXPECT_EQ("Matcher<Stmt>", Value.getTypeAsString());
// Can only convert to compatible matchers.
Value = VariantMatcher::SingleMatcher(recordDecl());
EXPECT_TRUE(Value.isMatcher());
EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<Decl>());
EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<UnaryOperator>());
EXPECT_EQ("Matcher<Decl>", Value.getTypeAsString());
Value = VariantMatcher::SingleMatcher(ignoringImpCasts(expr()));
EXPECT_TRUE(Value.isMatcher());
EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<Decl>());
EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<Stmt>());
EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<Expr>());
EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<IntegerLiteral>());
EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<GotoStmt>());
EXPECT_EQ("Matcher<Expr>", Value.getTypeAsString());
}
TEST(VariantValueTest, Assignment) {
VariantValue Value = std::string("A");
EXPECT_TRUE(Value.isString());
EXPECT_EQ("A", Value.getString());
EXPECT_TRUE(Value.hasValue());
EXPECT_FALSE(Value.isUnsigned());
EXPECT_FALSE(Value.isMatcher());
EXPECT_EQ("String", Value.getTypeAsString());
Value = VariantMatcher::SingleMatcher(recordDecl());
EXPECT_TRUE(Value.hasValue());
EXPECT_FALSE(Value.isUnsigned());
EXPECT_FALSE(Value.isString());
EXPECT_TRUE(Value.isMatcher());
EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<Decl>());
EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<UnaryOperator>());
EXPECT_EQ("Matcher<Decl>", Value.getTypeAsString());
Value = 17;
EXPECT_TRUE(Value.isUnsigned());
EXPECT_EQ(17U, Value.getUnsigned());
EXPECT_TRUE(Value.hasValue());
EXPECT_FALSE(Value.isMatcher());
EXPECT_FALSE(Value.isString());
Value = VariantValue();
EXPECT_FALSE(Value.hasValue());
EXPECT_FALSE(Value.isUnsigned());
EXPECT_FALSE(Value.isString());
EXPECT_FALSE(Value.isMatcher());
EXPECT_EQ("Nothing", Value.getTypeAsString());
}
TEST(VariantValueTest, ImplicitBool) {
VariantValue Value;
bool IfTrue = false;
if (Value) {
IfTrue = true;
}
EXPECT_FALSE(IfTrue);
EXPECT_TRUE(!Value);
Value = std::string();
IfTrue = false;
if (Value) {
IfTrue = true;
}
EXPECT_TRUE(IfTrue);
EXPECT_FALSE(!Value);
}
TEST(VariantValueTest, Matcher) {
EXPECT_TRUE(matches("class X {};", VariantValue(VariantMatcher::SingleMatcher(
recordDecl(hasName("X"))))
.getMatcher()
.getTypedMatcher<Decl>()));
EXPECT_TRUE(
matches("int x;", VariantValue(VariantMatcher::SingleMatcher(varDecl()))
.getMatcher()
.getTypedMatcher<Decl>()));
EXPECT_TRUE(
matches("int foo() { return 1 + 1; }",
VariantValue(VariantMatcher::SingleMatcher(functionDecl()))
.getMatcher()
.getTypedMatcher<Decl>()));
// Can't get the wrong matcher.
EXPECT_FALSE(VariantValue(VariantMatcher::SingleMatcher(varDecl()))
.getMatcher()
.hasTypedMatcher<Stmt>());
#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
// Trying to get the wrong matcher fails an assertion in Matcher<T>. We don't
// do this test when building with MSVC because its debug C runtime prints the
// assertion failure message as a wide string, which gtest doesn't understand.
EXPECT_DEATH(VariantValue(VariantMatcher::SingleMatcher(varDecl()))
.getMatcher()
.getTypedMatcher<Stmt>(),
"hasTypedMatcher");
#endif
EXPECT_FALSE(matches(
"int x;", VariantValue(VariantMatcher::SingleMatcher(functionDecl()))
.getMatcher()
.getTypedMatcher<Decl>()));
EXPECT_FALSE(
matches("int foo() { return 1 + 1; }",
VariantValue(VariantMatcher::SingleMatcher(declRefExpr()))
.getMatcher()
.getTypedMatcher<Stmt>()));
}
} // end anonymous namespace
} // end namespace dynamic
} // end namespace ast_matchers
} // end namespace clang
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