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// Copyright 2014 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.
// This file consists of "positive" tests, i.e., those verifying that things
// work (without compile errors, or even warnings if warnings are treated as
// errors).
// TODO(vtl): Fix no-compile tests (which are all disabled; crbug.com/105388)
// and write some "negative" tests.
#include "mojo/public/system/macros.h"
#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
#include "mojo/public/system/macros.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace {
TEST(MacrosTest, AllowUnused) {
// Test that no warning/error is issued even though |x| is unused.
int x MOJO_ALLOW_UNUSED = 123;
}
int MustUseReturnedResult() MOJO_WARN_UNUSED_RESULT;
int MustUseReturnedResult() {
return 456;
}
TEST(MacrosTest, WarnUnusedResult) {
if (!MustUseReturnedResult())
abort();
}
TEST(MacrosTest, Override) {
struct BaseClass {
virtual ~BaseClass() {}
virtual void ToBeOverridden() {}
virtual void AlsoToBeOverridden() = 0;
};
struct Subclass : public BaseClass {
virtual ~Subclass() {}
virtual void ToBeOverridden() MOJO_OVERRIDE {}
virtual void AlsoToBeOverridden() MOJO_OVERRIDE {}
};
Subclass x;
x.ToBeOverridden();
x.AlsoToBeOverridden();
}
TEST(MacrosTest, DisallowCopyAndAssign) {
class Class {
public:
Class() {}
explicit Class(int) {}
void NoOp() {}
private:
MOJO_DISALLOW_COPY_AND_ASSIGN(Class);
};
Class x;
x.NoOp();
Class y(789);
y.NoOp();
}
// First test |MOJO_COMPILE_ASSERT()| in a global scope.
MOJO_COMPILE_ASSERT(sizeof(int64_t) == 2 * sizeof(int32_t),
bad_compile_assert_failure_in_global_scope);
TEST(MacrosTest, CompileAssert) {
// Then in a local scope.
MOJO_COMPILE_ASSERT(sizeof(int32_t) == 2 * sizeof(int16_t),
bad_compile_assert_failure);
}
// Test that |MOJO_ARRAYSIZE()| works in a |MOJO_COMPILE_ASSERT()|.
const int kGlobalArray[5] = { 1, 2, 3, 4, 5 };
MOJO_COMPILE_ASSERT(MOJO_ARRAYSIZE(kGlobalArray) == 5u,
mojo_array_size_failed_in_compile_assert);
TEST(MacrosTest, ArraySize) {
double local_array[4] = { 6.7, 7.8, 8.9, 9.0 };
EXPECT_EQ(4u, MOJO_ARRAYSIZE(local_array));
}
TEST(MacrosTest, MoveOnlyTypeForCpp03) {
class MoveOnlyInt {
MOJO_MOVE_ONLY_TYPE_FOR_CPP_03(MoveOnlyInt, RValue)
public:
MoveOnlyInt() : is_set_(false), value_() {}
explicit MoveOnlyInt(int value) : is_set_(true), value_(value) {}
~MoveOnlyInt() {}
// Move-only constructor and operator=.
MoveOnlyInt(RValue other) { *this = other; }
MoveOnlyInt& operator=(RValue other) {
if (other.object != this) {
is_set_ = other.object->is_set_;
value_ = other.object->value_;
other.object->is_set_ = false;
}
return *this;
}
int value() const {
assert(is_set());
return value_;
}
bool is_set() const { return is_set_; }
private:
bool is_set_;
int value_;
};
MoveOnlyInt x(123);
EXPECT_TRUE(x.is_set());
EXPECT_EQ(123, x.value());
MoveOnlyInt y;
EXPECT_FALSE(y.is_set());
y = x.Pass();
EXPECT_FALSE(x.is_set());
EXPECT_TRUE(y.is_set());
EXPECT_EQ(123, y.value());
MoveOnlyInt z(y.Pass());
EXPECT_FALSE(y.is_set());
EXPECT_TRUE(z.is_set());
EXPECT_EQ(123, z.value());
z = z.Pass();
EXPECT_TRUE(z.is_set());
EXPECT_EQ(123, z.value());
}
} // namespace
} // namespace mojo
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