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