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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/template_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
struct AStruct {};
class AClass {};
enum AnEnum {};
class Parent {};
class Child : public Parent {};
TEST(TemplateUtilTest, IsPointer) {
EXPECT_FALSE(is_pointer<int>::value);
EXPECT_FALSE(is_pointer<int&>::value);
EXPECT_TRUE(is_pointer<int*>::value);
EXPECT_TRUE(is_pointer<const int*>::value);
}
TEST(TemplateUtilTest, IsArray) {
EXPECT_FALSE(is_array<int>::value);
EXPECT_FALSE(is_array<int*>::value);
EXPECT_FALSE(is_array<int(*)[3]>::value);
EXPECT_TRUE(is_array<int[]>::value);
EXPECT_TRUE(is_array<const int[]>::value);
EXPECT_TRUE(is_array<int[3]>::value);
}
TEST(TemplateUtilTest, IsNonConstReference) {
EXPECT_FALSE(is_non_const_reference<int>::value);
EXPECT_FALSE(is_non_const_reference<const int&>::value);
EXPECT_TRUE(is_non_const_reference<int&>::value);
}
TEST(TemplateUtilTest, IsConvertible) {
// Extra parens needed to make EXPECT_*'s parsing happy. Otherwise,
// it sees the equivalent of
//
// EXPECT_TRUE( (is_convertible < Child), (Parent > ::value));
//
// Silly C++.
EXPECT_TRUE( (is_convertible<Child, Parent>::value) );
EXPECT_FALSE( (is_convertible<Parent, Child>::value) );
EXPECT_FALSE( (is_convertible<Parent, AStruct>::value) );
EXPECT_TRUE( (is_convertible<int, double>::value) );
EXPECT_TRUE( (is_convertible<int*, void*>::value) );
EXPECT_FALSE( (is_convertible<void*, int*>::value) );
}
TEST(TemplateUtilTest, IsClass) {
EXPECT_TRUE(is_class<AStruct>::value);
EXPECT_TRUE(is_class<AClass>::value);
EXPECT_FALSE(is_class<AnEnum>::value);
EXPECT_FALSE(is_class<int>::value);
EXPECT_FALSE(is_class<char*>::value);
EXPECT_FALSE(is_class<int&>::value);
EXPECT_FALSE(is_class<char[3]>::value);
}
} // namespace
} // namespace base
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