зеркало из https://github.com/mozilla/gecko-dev.git
111 строки
3.0 KiB
C++
111 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <gtest/gtest.h>
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#include <stdint.h>
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#include "MediaSpan.h"
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#include "mozilla/ArrayUtils.h"
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using namespace mozilla;
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already_AddRefed<MediaByteBuffer> makeBuffer(uint8_t aStart, uint8_t aEnd) {
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RefPtr<MediaByteBuffer> buffer(new MediaByteBuffer);
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for (uint8_t i = aStart; i <= aEnd; i++) {
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buffer->AppendElement(i);
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}
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return buffer.forget();
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}
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bool IsRangeAt(const MediaSpan& aSpan, uint8_t aStart, uint8_t aEnd,
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size_t aAt) {
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size_t length = size_t(aEnd) - size_t(aStart) + 1;
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if (aAt + length > aSpan.Length()) {
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return false;
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}
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for (size_t i = 0; i < length; i++) {
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if (aSpan[aAt + i] != uint8_t(aStart + i)) {
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return false;
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}
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}
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return true;
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}
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bool IsRange(const MediaSpan& aSpan, uint8_t aStart, uint8_t aEnd) {
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return IsRangeAt(aSpan, aStart, aEnd, 0);
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}
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TEST(MediaSpan, AppendToFromSpan)
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{
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RefPtr<MediaByteBuffer> buffer1 = makeBuffer(0, 9);
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MediaSpan span1 = MediaSpan(buffer1);
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EXPECT_EQ(span1.Length(), size_t(10));
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EXPECT_TRUE(IsRange(span1, 0, 9));
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MediaSpan span2 = span1.From(5);
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EXPECT_EQ(span2.Length(), size_t(5));
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EXPECT_TRUE(IsRange(span2, 5, 9));
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RefPtr<MediaByteBuffer> buffer2 = makeBuffer(10, 19);
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EXPECT_EQ(buffer2->Length(), size_t(10));
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span2.Append(buffer2);
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// Span2 should be: [5...19]
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EXPECT_EQ(span2.Length(), size_t(15));
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EXPECT_TRUE(IsRange(span2, 5, 19));
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// Span1 should not be modified by the append to span2.
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EXPECT_EQ(span1.Length(), size_t(10));
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EXPECT_TRUE(IsRange(span1, 0, 9));
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}
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TEST(MediaSpan, AppendToToSpan)
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{
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RefPtr<MediaByteBuffer> buffer1 = makeBuffer(0, 9);
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MediaSpan span1 = MediaSpan(buffer1);
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EXPECT_EQ(span1.Length(), size_t(10));
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EXPECT_TRUE(IsRange(span1, 0, 9));
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MediaSpan span2 = span1.To(5);
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// Span2 should be [0...4]
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EXPECT_EQ(span2.Length(), size_t(5));
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EXPECT_TRUE(IsRange(span2, 0, 4));
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RefPtr<MediaByteBuffer> buffer2 = makeBuffer(10, 19);
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EXPECT_EQ(buffer2->Length(), size_t(10));
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span2.Append(buffer2);
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// Span2 should be: [0...4][10...19]
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EXPECT_EQ(span2.Length(), size_t(15));
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EXPECT_TRUE(IsRangeAt(span2, 0, 4, 0));
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EXPECT_TRUE(IsRangeAt(span2, 10, 19, 5));
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// Span1 should not be modified by the append to span2.
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EXPECT_EQ(span1.Length(), size_t(10));
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EXPECT_TRUE(IsRange(span1, 0, 9));
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}
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TEST(MediaSpan, RemoveFront)
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{
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RefPtr<MediaByteBuffer> buffer1 = makeBuffer(0, 9);
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MediaSpan span1 = MediaSpan(buffer1);
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EXPECT_EQ(span1.Length(), size_t(10));
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EXPECT_TRUE(IsRange(span1, 0, 9));
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MediaSpan span2(span1);
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EXPECT_EQ(span2.Length(), size_t(10));
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span2.RemoveFront(5);
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// Span2 should now be [5...9]
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EXPECT_EQ(span2.Length(), size_t(5));
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EXPECT_TRUE(IsRange(span2, 5, 9));
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// Span1 should be unaffected.
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EXPECT_EQ(span1.Length(), size_t(10));
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EXPECT_TRUE(IsRange(span1, 0, 9));
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}
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