shaka-packager/packager/media/formats/webvtt/webvtt_parser_unittest.cc

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// Copyright 2017 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "packager/file/file.h"
#include "packager/media/base/media_handler_test_base.h"
#include "packager/media/formats/webvtt/text_readers.h"
#include "packager/media/formats/webvtt/webvtt_parser.h"
#include "packager/status_test_util.h"
namespace shaka {
namespace media {
namespace {
const char kLanguage[] = "en";
const size_t kInputCount = 0;
const size_t kOutputCount = 1;
const size_t kOutputIndex = 0;
const size_t kStreamIndex = 0;
const size_t kTimeScale = 1000;
const bool kEncrypted = true;
const char* kNoId = "";
const char* kNoSettings = "";
} // namespace
class WebVttParserTest : public MediaHandlerTestBase {
protected:
void SetUpAndInitializeGraph(const char* text) {
const char* kFilename = "memory://test-file";
// Create the input file from the text passed to the test.
ASSERT_TRUE(File::WriteStringToFile(kFilename, text));
// Read from the file we just wrote.
std::unique_ptr<FileReader> reader;
ASSERT_OK(FileReader::Open(kFilename, &reader));
parser_ = std::make_shared<WebVttParser>(std::move(reader), kLanguage);
ASSERT_OK(MediaHandlerTestBase::SetUpAndInitializeGraph(
parser_, kInputCount, kOutputCount));
}
std::shared_ptr<OriginHandler> parser_;
};
TEST_F(WebVttParserTest, FailToParseEmptyFile) {
const char* text = "";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
EXPECT_CALL(*Output(kOutputIndex), OnProcess(testing::_)).Times(0);
EXPECT_CALL(*Output(kOutputIndex), OnFlush(testing::_)).Times(0);
ASSERT_NE(Status::OK, parser_->Run());
}
TEST_F(WebVttParserTest, ParseOnlyHeader) {
const char* text =
"WEBVTT\n"
"\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted,
kLanguage)));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
TEST_F(WebVttParserTest, ParseHeaderWithBOM) {
const char* text =
"\xFE\xFFWEBVTT\n"
"\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
TEST_F(WebVttParserTest, FailToParseHeaderWrongWord) {
const char* text =
"NOT WEBVTT\n"
"\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
EXPECT_CALL(*Output(kOutputIndex), OnProcess(testing::_)).Times(0);
EXPECT_CALL(*Output(kOutputIndex), OnFlush(testing::_)).Times(0);
ASSERT_NE(Status::OK, parser_->Run());
}
TEST_F(WebVttParserTest, FailToParseHeaderNotOneLine) {
const char* text =
"WEBVTT\n"
"WEBVTT\n"
"\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
EXPECT_CALL(*Output(kOutputIndex), OnProcess(testing::_)).Times(0);
EXPECT_CALL(*Output(kOutputIndex), OnFlush(testing::_)).Times(0);
ASSERT_NE(Status::OK, parser_->Run());
}
// TODO: Add style blocks support to WebVttParser.
// This test is disabled until WebVTT parses STYLE blocks.
TEST_F(WebVttParserTest, DISABLED_ParseStyleBlocks) {
const char* text =
"WEBVTT\n"
"\n"
"STYLE\n"
"::cue {\n"
" background-image: linear-gradient(to bottom, dimgray, lightgray);\n"
" color: papayawhip;\n"
"}";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
TEST_F(WebVttParserTest, IngoresZeroDurationCues) {
const char* text =
"WEBVTT\n"
"\n"
"00:01:00.000 --> 00:01:00.000\n"
"This subtitle would never show\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
TEST_F(WebVttParserTest, ParseOneCue) {
const char* text =
"WEBVTT\n"
"\n"
"00:01:00.000 --> 01:00:00.000\n"
"subtitle\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 60000u, 3600000u, kNoSettings,
"subtitle")));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
TEST_F(WebVttParserTest, FailToParseCueWithArrowInId) {
const char* text =
"WEBVTT\n"
"\n"
"-->\n"
"00:01:00.000 --> 01:00:00.000\n"
"subtitle\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
ASSERT_NE(Status::OK, parser_->Run());
}
TEST_F(WebVttParserTest, ParseOneCueWithId) {
const char* text =
"WEBVTT\n"
"\n"
"id\n"
"00:01:00.000 --> 01:00:00.000\n"
"subtitle\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample("id", 60000u, 3600000u, kNoSettings,
"subtitle")));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
TEST_F(WebVttParserTest, ParseOneCueWithSettings) {
const char* text =
"WEBVTT\n"
"\n"
"00:01:00.000 --> 01:00:00.000 size:50%\n"
"subtitle\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 60000u, 3600000u, "size:50%",
"subtitle")));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
// Verify that a typical case with mulitple cues work.
TEST_F(WebVttParserTest, ParseMultipleCues) {
const char* text =
"WEBVTT\n"
"\n"
"00:00:01.000 --> 00:00:05.200\n"
"subtitle A\n"
"\n"
"00:00:02.321 --> 00:00:07.000\n"
"subtitle B\n"
"\n"
"00:00:05.800 --> 00:00:08.000\n"
"subtitle C\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 1000u, 5200u, kNoSettings,
"subtitle A")));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 2321u, 7000u, kNoSettings,
"subtitle B")));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 5800u, 8000u, kNoSettings,
"subtitle C")));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
// Verify that a typical case with mulitple cues work even when comments are
// present.
TEST_F(WebVttParserTest, ParseWithComments) {
const char* text =
"WEBVTT\n"
"\n"
"NOTE This is a one line comment\n"
"\n"
"00:00:01.000 --> 00:00:05.200\n"
"subtitle A\n"
"\n"
"NOTE\n"
"This is a multi-line comment\n"
"\n"
"00:00:02.321 --> 00:00:07.000\n"
"subtitle B\n"
"\n"
"NOTE This is a single line comment that\n"
"spans two lines\n"
"\n"
"NOTE\tThis is a comment that using a tab\n"
"\n"
"00:00:05.800 --> 00:00:08.000\n"
"subtitle C\n";
ASSERT_NO_FATAL_FAILURE(SetUpAndInitializeGraph(text));
{
testing::InSequence s;
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsStreamInfo(kStreamIndex, kTimeScale, !kEncrypted)));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 1000u, 5200u, kNoSettings,
"subtitle A")));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 2321u, 7000u, kNoSettings,
"subtitle B")));
EXPECT_CALL(*Output(kOutputIndex),
OnProcess(IsTextSample(kNoId, 5800u, 8000u, kNoSettings,
"subtitle C")));
EXPECT_CALL(*Output(kOutputIndex), OnFlush(kStreamIndex));
}
ASSERT_OK(parser_->Run());
}
} // namespace media
} // namespace shaka