93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
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// Copyright (c) 2012 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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#include <string.h>
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#include "base/basictypes.h"
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#include "base/memory/scoped_ptr.h"
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#include "media/mp4/offset_byte_queue.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace media {
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class OffsetByteQueueTest : public testing::Test {
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public:
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virtual void SetUp() OVERRIDE {
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uint8 buf[256];
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for (int i = 0; i < 256; i++) {
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buf[i] = i;
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}
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queue_.reset(new OffsetByteQueue);
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queue_->Push(buf, sizeof(buf));
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queue_->Push(buf, sizeof(buf));
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queue_->Pop(384);
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// Queue will start with 128 bytes of data and an offset of 384 bytes.
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// These values are used throughout the test.
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}
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protected:
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scoped_ptr<OffsetByteQueue> queue_;
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};
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TEST_F(OffsetByteQueueTest, SetUp) {
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EXPECT_EQ(384, queue_->head());
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EXPECT_EQ(512, queue_->tail());
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const uint8* buf;
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int size;
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queue_->Peek(&buf, &size);
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EXPECT_EQ(128, size);
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EXPECT_EQ(128, buf[0]);
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EXPECT_EQ(255, buf[size-1]);
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}
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TEST_F(OffsetByteQueueTest, PeekAt) {
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const uint8* buf;
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int size;
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queue_->PeekAt(400, &buf, &size);
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EXPECT_EQ(queue_->tail() - 400, size);
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EXPECT_EQ(400 - 256, buf[0]);
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queue_->PeekAt(512, &buf, &size);
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EXPECT_EQ(NULL, buf);
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EXPECT_EQ(0, size);
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}
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TEST_F(OffsetByteQueueTest, Trim) {
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EXPECT_TRUE(queue_->Trim(128));
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EXPECT_TRUE(queue_->Trim(384));
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EXPECT_EQ(384, queue_->head());
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EXPECT_EQ(512, queue_->tail());
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EXPECT_TRUE(queue_->Trim(400));
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EXPECT_EQ(400, queue_->head());
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EXPECT_EQ(512, queue_->tail());
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const uint8* buf;
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int size;
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queue_->PeekAt(400, &buf, &size);
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EXPECT_EQ(queue_->tail() - 400, size);
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EXPECT_EQ(400 - 256, buf[0]);
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// Trimming to the exact end of the buffer should return 'true'. This
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// accomodates EOS cases.
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EXPECT_TRUE(queue_->Trim(512));
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EXPECT_EQ(512, queue_->head());
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queue_->Peek(&buf, &size);
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EXPECT_EQ(NULL, buf);
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// Trimming past the end of the buffer should return 'false'; we haven't seen
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// the preceeding bytes.
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EXPECT_FALSE(queue_->Trim(513));
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// However, doing that shouldn't affect the EOS case. Only adding new data
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// should alter this behavior.
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EXPECT_TRUE(queue_->Trim(512));
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}
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} // namespace media
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