69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// This file tests the C Mojo system macros and consists of "positive" tests,
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// i.e., those verifying that things work (without compile errors, or even
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// warnings if warnings are treated as errors).
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// TODO(vtl): Fix no-compile tests (which are all disabled; crbug.com/105388)
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// and write some "negative" tests.
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#include "mojo/public/c/system/macros.h"
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#include <assert.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "testing/gtest/include/gtest/gtest.h"
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namespace mojo {
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namespace {
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// First test |MOJO_STATIC_ASSERT()| in a global scope.
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MOJO_STATIC_ASSERT(sizeof(int64_t) == 2 * sizeof(int32_t),
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"Bad static_assert() failure in global scope");
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TEST(MacrosTest, CompileAssert) {
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// Then in a local scope.
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MOJO_STATIC_ASSERT(sizeof(int32_t) == 2 * sizeof(int16_t),
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"Bad static_assert() failure");
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}
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TEST(MacrosTest, Alignof) {
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// Strictly speaking, this isn't a portable test, but I think it'll pass on
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// all the platforms we currently support.
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EXPECT_EQ(1u, MOJO_ALIGNOF(char));
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EXPECT_EQ(4u, MOJO_ALIGNOF(int32_t));
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EXPECT_EQ(8u, MOJO_ALIGNOF(int64_t));
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EXPECT_EQ(8u, MOJO_ALIGNOF(double));
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}
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// These structs are used in the Alignas test. Define them globally to avoid
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// MSVS warnings/errors.
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#if defined(_MSC_VER)
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#pragma warning(push)
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// Disable the warning "structure was padded due to __declspec(align())".
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#pragma warning(disable : 4324)
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#endif
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struct MOJO_ALIGNAS(1) StructAlignas1 {
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char x;
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};
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struct MOJO_ALIGNAS(4) StructAlignas4 {
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char x;
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};
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struct MOJO_ALIGNAS(8) StructAlignas8 {
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char x;
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};
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#if defined(_MSC_VER)
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#pragma warning(pop)
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#endif
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TEST(MacrosTest, Alignas) {
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EXPECT_EQ(1u, MOJO_ALIGNOF(StructAlignas1));
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EXPECT_EQ(4u, MOJO_ALIGNOF(StructAlignas4));
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EXPECT_EQ(8u, MOJO_ALIGNOF(StructAlignas8));
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}
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} // namespace
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} // namespace mojo
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