1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/template_util.h" 6 #include "testing/gtest/include/gtest/gtest.h" 7 8 namespace base { 9 namespace { 10 11 struct AStruct {}; 12 class AClass {}; 13 enum AnEnum {}; 14 15 class Parent {}; 16 class Child : public Parent {}; 17 18 TEST(TemplateUtilTest, IsPointer) { 19 EXPECT_FALSE(is_pointer<int>::value); 20 EXPECT_FALSE(is_pointer<int&>::value); 21 EXPECT_TRUE(is_pointer<int*>::value); 22 EXPECT_TRUE(is_pointer<const int*>::value); 23 } 24 25 TEST(TemplateUtilTest, IsArray) { 26 EXPECT_FALSE(is_array<int>::value); 27 EXPECT_FALSE(is_array<int*>::value); 28 EXPECT_FALSE(is_array<int(*)[3]>::value); 29 EXPECT_TRUE(is_array<int[]>::value); 30 EXPECT_TRUE(is_array<const int[]>::value); 31 EXPECT_TRUE(is_array<int[3]>::value); 32 } 33 34 TEST(TemplateUtilTest, IsNonConstReference) { 35 EXPECT_FALSE(is_non_const_reference<int>::value); 36 EXPECT_FALSE(is_non_const_reference<const int&>::value); 37 EXPECT_TRUE(is_non_const_reference<int&>::value); 38 } 39 40 TEST(TemplateUtilTest, IsConvertible) { 41 // Extra parens needed to make EXPECT_*'s parsing happy. Otherwise, 42 // it sees the equivalent of 43 // 44 // EXPECT_TRUE( (is_convertible < Child), (Parent > ::value)); 45 // 46 // Silly C++. 47 EXPECT_TRUE( (is_convertible<Child, Parent>::value) ); 48 EXPECT_FALSE( (is_convertible<Parent, Child>::value) ); 49 EXPECT_FALSE( (is_convertible<Parent, AStruct>::value) ); 50 51 EXPECT_TRUE( (is_convertible<int, double>::value) ); 52 EXPECT_TRUE( (is_convertible<int*, void*>::value) ); 53 EXPECT_FALSE( (is_convertible<void*, int*>::value) ); 54 } 55 56 TEST(TemplateUtilTest, IsClass) { 57 EXPECT_TRUE(is_class<AStruct>::value); 58 EXPECT_TRUE(is_class<AClass>::value); 59 60 EXPECT_FALSE(is_class<AnEnum>::value); 61 EXPECT_FALSE(is_class<int>::value); 62 EXPECT_FALSE(is_class<char*>::value); 63 EXPECT_FALSE(is_class<int&>::value); 64 EXPECT_FALSE(is_class<char[3]>::value); 65 } 66 67 } // namespace 68 } // namespace base 69
