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