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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_FORMATS_HLS_MULTIVARIANT_PLAYLIST_TEST_BUILDER_H_
#define MEDIA_FORMATS_HLS_MULTIVARIANT_PLAYLIST_TEST_BUILDER_H_
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/strings/string_piece.h"
#include "media/formats/hls/multivariant_playlist.h"
#include "media/formats/hls/playlist_test_builder.h"
#include "media/formats/hls/types.h"
#include "media/formats/hls/variant_stream.h"
namespace media::hls {
// Helper for building multivariant playlist test cases that allows writing
// assertions next to the playlist lines they check, as well as "forking" test
// cases via copying the builder.
class MultivariantPlaylistTestBuilder
: public PlaylistTestBuilder<MultivariantPlaylist> {
public:
MultivariantPlaylistTestBuilder();
~MultivariantPlaylistTestBuilder();
MultivariantPlaylistTestBuilder(const MultivariantPlaylistTestBuilder&);
MultivariantPlaylistTestBuilder(MultivariantPlaylistTestBuilder&&);
MultivariantPlaylistTestBuilder& operator=(
const MultivariantPlaylistTestBuilder&);
MultivariantPlaylistTestBuilder& operator=(MultivariantPlaylistTestBuilder&&);
// Increments the number of variants that are expected to be contained in the
// playlist.
void ExpectAdditionalVariant() { variant_expectations_.emplace_back(); }
// Adds a new expectation for the latest variant in the playlist, which will
// be checked during `ExpectOk`.
template <typename Fn, typename Arg>
void ExpectVariant(Fn fn,
Arg arg,
base::Location location = base::Location::Current()) {
variant_expectations_.back().expectations.push_back(base::BindRepeating(
std::move(fn), std::move(arg), std::move(location)));
}
void ExpectOk(const base::Location& from = base::Location::Current()) const {
PlaylistTestBuilder::ExpectOk(from);
}
void ExpectError(
ParseStatusCode code,
const base::Location& from = base::Location::Current()) const {
PlaylistTestBuilder::ExpectError(code, from);
}
private:
struct VariantExpectations {
VariantExpectations();
~VariantExpectations();
VariantExpectations(const VariantExpectations&);
VariantExpectations(VariantExpectations&&);
VariantExpectations& operator=(const VariantExpectations&);
VariantExpectations& operator=(VariantExpectations&&);
std::vector<base::RepeatingCallback<void(const VariantStream&)>>
expectations;
};
void VerifyExpectations(const MultivariantPlaylist& playlist,
const base::Location& from) const override;
std::vector<VariantExpectations> variant_expectations_;
};
// Checks that the latest variant has the given primary rendition URI.
inline void HasPrimaryRenditionUri(const GURL& uri,
const base::Location& from,
const VariantStream& variant) {
EXPECT_EQ(variant.GetPrimaryRenditionUri(), uri) << from.ToString();
}
// Checks the value of `GetBandwidth` on the latest variant against the given
// value.
inline void HasBandwidth(types::DecimalInteger bandwidth,
const base::Location& from,
const VariantStream& variant) {
EXPECT_EQ(variant.GetBandwidth(), bandwidth) << from.ToString();
}
// Checks the value of `GetAverageBandwidth` on the latest variant against the
// given value.
inline void HasAverageBandwidth(
absl::optional<types::DecimalInteger> average_bandwidth,
const base::Location& from,
const VariantStream& variant) {
EXPECT_EQ(variant.GetAverageBandwidth(), average_bandwidth)
<< from.ToString();
}
// Checks the value of `GetScore` on the latest variant against the given value.
inline void HasScore(absl::optional<types::DecimalFloatingPoint> score,
const base::Location& from,
const VariantStream& variant) {
EXPECT_EQ(variant.GetScore(), score) << from.ToString();
}
// Checks the value of `GetCodecs` on the latest variant against the given
// value.
inline void HasCodecs(absl::optional<std::vector<std::string>> codecs,
const base::Location& from,
const VariantStream& variant) {
EXPECT_EQ(variant.GetCodecs(), codecs) << from.ToString();
}
// Checks the value of `GetResolution` on the latest variant against the given
// value.
inline void HasResolution(absl::optional<types::DecimalResolution> resolution,
const base::Location& from,
const VariantStream& variant) {
ASSERT_EQ(variant.GetResolution().has_value(), resolution.has_value())
<< from.ToString();
if (resolution.has_value()) {
EXPECT_EQ(variant.GetResolution()->width, resolution->width)
<< from.ToString();
EXPECT_EQ(variant.GetResolution()->height, resolution->height)
<< from.ToString();
}
}
// Checks the value of `GetFrameRate` on the latest variant against the given
// value.
inline void HasFrameRate(absl::optional<types::DecimalFloatingPoint> frame_rate,
const base::Location& from,
const VariantStream& variant) {
ASSERT_EQ(variant.GetFrameRate().has_value(), frame_rate.has_value())
<< from.ToString();
if (frame_rate.has_value()) {
EXPECT_DOUBLE_EQ(variant.GetFrameRate().value(), frame_rate.value())
<< from.ToString();
}
}
} // namespace media::hls
#endif
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