[DO NOT COMMIT/REVIEW] For reference: UrlDemuxerStreamProvider

media/base/android/url_demuxer_stream_unittest.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/macros.h"
+#include "base/message_loop/message_loop.h"
+#include "media/base/android/url_demuxer_stream.h"
+#include "media/base/android/url_demuxer_stream_provider.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace media {
+
+class UrlDemuxerStreamProviderTest : public testing::Test {
+ public:
+  UrlDemuxerStreamProviderTest() {}
+
+  void Initialize(const std::string& url) {
+    demuxer_.reset(new UrlDemuxerStreamProvider(GURL(url)));
+  }
+
+  void Initialize() { Initialize(kDefaultUrl); }
+
+  UrlDemuxerStream* GetCastedUrlStream() {
+    return (UrlDemuxerStream*)demuxer_->GetStream(DemuxerStream::URL);
+  }
+
+  const std::string kDefaultUrl = "http://example.com";
+
+  std::unique_ptr<Demuxer> demuxer_;
+
+ private:
+  // A message loop needs to be instantiated in order for the test to run
+  // properly.
+  base::MessageLoop message_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(UrlDemuxerStreamProviderTest);
+};
+
+TEST_F(UrlDemuxerStreamProviderTest, ProvidesExpectedStreamTypes) {
+  Initialize();
+
+  DemuxerStream* audio_stream = demuxer_->GetStream(DemuxerStream::Type::AUDIO);
+  DemuxerStream* video_stream = demuxer_->GetStream(DemuxerStream::Type::VIDEO);
+  DemuxerStream* text_stream = demuxer_->GetStream(DemuxerStream::Type::TEXT);
+  DemuxerStream* url_stream = demuxer_->GetStream(DemuxerStream::Type::URL);
+
+  // Should not return AUDIO/VIDEO/TEXT streams
+  ASSERT_EQ(nullptr, audio_stream);
+  ASSERT_EQ(nullptr, video_stream);
+  ASSERT_EQ(nullptr, text_stream);
+
+  // Should return a URL stream, of UrlDemuxerStream type
+  ASSERT_NE(nullptr, url_stream);
+}
+
+// Whether or not the UrlDemuxerStreamProvider should accept emptry strings is
+// up for debate.
+TEST_F(UrlDemuxerStreamProviderTest, AcceptsEmptyStrings) {
+  Initialize("");
+
+  UrlDemuxerStream* stream = GetCastedUrlStream();
+
+  ASSERT_NE(nullptr, stream);
+  ASSERT_EQ(GURL::EmptyGURL(), stream->url());
+}
+
+TEST_F(UrlDemuxerStreamProviderTest, AcceptsNormalUrl) {
+  Initialize();
+
+  UrlDemuxerStream* stream = GetCastedUrlStream();
+
+  ASSERT_NE(nullptr, stream);
+  ASSERT_EQ(GURL(kDefaultUrl), stream->url());
+}
+
+TEST_F(UrlDemuxerStreamProviderTest, VerifyIdempotenceOfGetStream) {
+  Initialize();
+
+  UrlDemuxerStream* stream1 = GetCastedUrlStream();
+  UrlDemuxerStream* stream2 = GetCastedUrlStream();
+
+  ASSERT_EQ(stream1, stream2);
+  ASSERT_EQ(stream1->url(), stream2->url());
+}
+
+}  // namespace media