Make the fuchsia mojo/public repo the source of truth.

mojo/public/cpp/bindings/tests/buffer_unittest.cc

-// 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.
-
-#include <limits>
-
-#include "gtest/gtest.h"
-#include "mojo/public/cpp/bindings/lib/bindings_serialization.h"
-#include "mojo/public/cpp/bindings/lib/fixed_buffer.h"
-
-namespace mojo {
-namespace test {
-namespace {
-
-bool IsZero(void* p_buf, size_t size) {
-  char* buf = reinterpret_cast<char*>(p_buf);
-  for (size_t i = 0; i < size; ++i) {
-    if (buf[i] != 0)
-      return false;
-  }
-  return true;
-}
-
-// Tests that you can create a FixedBuffer whose underlying buffer size is not
-// a multiple of 8.
-TEST(FixedBufferTest, UnAlignedBufferSized) {
-  char char_buf[10] = {};
-  internal::FixedBuffer fixed_buf;
-  fixed_buf.Initialize(char_buf, sizeof(char_buf));
-}
-
-// Tests that FixedBuffer allocates memory aligned to 8 byte boundaries.
-TEST(FixedBufferTest, Alignment) {
-  internal::FixedBufferForTesting buf(internal::Align(10) * 2);
-  ASSERT_EQ(buf.size(), 16u * 2);
-
-  void* a = buf.Allocate(10);
-  ASSERT_TRUE(a);
-  EXPECT_TRUE(IsZero(a, 10));
-  EXPECT_EQ(0, reinterpret_cast<ptrdiff_t>(a) % 8);
-
-  void* b = buf.Allocate(10);
-  ASSERT_TRUE(b);
-  EXPECT_TRUE(IsZero(b, 10));
-  EXPECT_EQ(0, reinterpret_cast<ptrdiff_t>(b) % 8);
-
-  // Any more allocations would result in an assert, but we can't test that.
-}
-
-// Tests that FixedBufferForTesting::Leak passes ownership to the caller.
-TEST(FixedBufferTest, Leak) {
-  void* ptr = nullptr;
-  void* buf_ptr = nullptr;
-  {
-    internal::FixedBufferForTesting buf(8);
-    ASSERT_EQ(8u, buf.size());
-
-    ptr = buf.Allocate(8);
-    ASSERT_TRUE(ptr);
-    buf_ptr = buf.Leak();
-
-    // The buffer should point to the first element allocated.
-    // TODO(mpcomplete): Is this a reasonable expectation?
-    EXPECT_EQ(ptr, buf_ptr);
-
-    // The FixedBufferForTesting should be empty now.
-    EXPECT_EQ(0u, buf.size());
-    EXPECT_FALSE(buf.Leak());
-  }
-
-  // Since we called Leak, ptr is still writable after FixedBufferForTesting
-  // went out of scope.
-  memset(ptr, 1, 8);
-  free(buf_ptr);
-}
-
-#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
-TEST(FixedBufferTest, TooBig) {
-  internal::FixedBufferForTesting buf(24);
-
-  // A little bit too large.
-  EXPECT_EQ(reinterpret_cast<void*>(0), buf.Allocate(32));
-
-  // Move the cursor forward.
-  EXPECT_NE(reinterpret_cast<void*>(0), buf.Allocate(16));
-
-  // A lot too large.
-  EXPECT_EQ(reinterpret_cast<void*>(0),
-            buf.Allocate(std::numeric_limits<size_t>::max() - 1024u));
-
-  // A lot too large, leading to possible integer overflow.
-  EXPECT_EQ(reinterpret_cast<void*>(0),
-            buf.Allocate(std::numeric_limits<size_t>::max() - 8u));
-}
-#endif
-
-}  // namespace
-}  // namespace test
-}  // namespace mojo