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// Copyright 2005 Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ----
// Author: lar@google.com (Laramie Leavitt)
//
// These tests are really compile time tests.
// If you try to step through this in a debugger
// you will not see any evaluations, merely that
// value is assigned true or false sequentially.
#include <stubs/template_util.h>
#include <testing/googletest.h>
#include <gtest/gtest.h>
namespace GOOGLE_NAMESPACE = google::protobuf::internal;
namespace google {
namespace protobuf {
namespace internal {
namespace {
TEST(TemplateUtilTest, TestSize) {
EXPECT_GT(sizeof(GOOGLE_NAMESPACE::big_), sizeof(GOOGLE_NAMESPACE::small_));
}
TEST(TemplateUtilTest, TestIntegralConstants) {
// test the built-in types.
EXPECT_TRUE(true_type::value);
EXPECT_FALSE(false_type::value);
typedef integral_constant<int, 1> one_type;
EXPECT_EQ(1, one_type::value);
}
TEST(TemplateUtilTest, TestTemplateIf) {
typedef if_<true, true_type, false_type>::type if_true;
EXPECT_TRUE(if_true::value);
typedef if_<false, true_type, false_type>::type if_false;
EXPECT_FALSE(if_false::value);
}
TEST(TemplateUtilTest, TestTemplateTypeEquals) {
// Check that the TemplateTypeEquals works correctly.
bool value = false;
// Test the same type is true.
value = type_equals_<int, int>::value;
EXPECT_TRUE(value);
// Test different types are false.
value = type_equals_<float, int>::value;
EXPECT_FALSE(value);
// Test type aliasing.
typedef const int foo;
value = type_equals_<const foo, const int>::value;
EXPECT_TRUE(value);
}
TEST(TemplateUtilTest, TestTemplateAndOr) {
// Check that the TemplateTypeEquals works correctly.
bool value = false;
// Yes && Yes == true.
value = and_<true_, true_>::value;
EXPECT_TRUE(value);
// Yes && No == false.
value = and_<true_, false_>::value;
EXPECT_FALSE(value);
// No && Yes == false.
value = and_<false_, true_>::value;
EXPECT_FALSE(value);
// No && No == false.
value = and_<false_, false_>::value;
EXPECT_FALSE(value);
// Yes || Yes == true.
value = or_<true_, true_>::value;
EXPECT_TRUE(value);
// Yes || No == true.
value = or_<true_, false_>::value;
EXPECT_TRUE(value);
// No || Yes == true.
value = or_<false_, true_>::value;
EXPECT_TRUE(value);
// No || No == false.
value = or_<false_, false_>::value;
EXPECT_FALSE(value);
}
TEST(TemplateUtilTest, TestIdentity) {
EXPECT_TRUE(
(type_equals_<GOOGLE_NAMESPACE::identity_<int>::type, int>::value));
EXPECT_TRUE(
(type_equals_<GOOGLE_NAMESPACE::identity_<void>::type, void>::value));
}
} // anonymous namespace
} // namespace internal
} // namespace protobuf
} // namespace google
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