Add the copresence DirectiveHandler.

components/copresence/handlers/audio/audio_directive_list_unittest.cc

+// Copyright 2014 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 "components/copresence/handlers/audio/audio_directive_list.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/message_loop/message_loop.h"
+#include "components/copresence/test/audio_test_support.h"
+#include "media/base/audio_bus.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace copresence {
+
+class AudioDirectiveListTest : public testing::Test {
+ public:
+  AudioDirectiveListTest()
+      : directive_list_(new AudioDirectiveList(
+            base::Bind(&AudioDirectiveListTest::EncodeToken,
+                       base::Unretained(this)),
+            base::Bind(&base::DoNothing))) {}
+
+  virtual ~AudioDirectiveListTest() {}
+
+ protected:
+  void EncodeToken(const std::string& token,
+                   const AudioDirectiveList::SamplesCallback& callback) {
+    callback.Run(token, CreateRandomAudioRefCounted(1, 0x7331));
+  }
+
+  // This order is important. We want the message loop to get created before

[Daniel Erat, 2014/07/31 22:31:15]

i don't think you need this comment in all of your tests. having the message
loop outlive the things that use it seems pretty obvious

[rkc, 2014/08/01 21:08:56]

Done.

+  // our directive list, since the directive list constructor will post tasks.
+  base::MessageLoop message_loop_;
+  scoped_ptr<AudioDirectiveList> directive_list_;
+};
+
+TEST_F(AudioDirectiveListTest, Basic) {
+  const base::TimeDelta kZeroTtl = base::TimeDelta::FromMilliseconds(0);
+  const base::TimeDelta kLargeTtl = base::TimeDelta::FromSeconds(0x7331);
+
+  directive_list_->AddTransmitDirective("token1", "op_id1", kZeroTtl);
+  directive_list_->AddTransmitDirective("token2", "op_id2", kLargeTtl);
+  directive_list_->AddTransmitDirective("token3", "op_id1", kZeroTtl);
+
+  EXPECT_EQ("token2", directive_list_->GetNextTransmit()->token);
+
+  directive_list_->AddReceiveDirective("op_id1", kZeroTtl);
+  directive_list_->AddReceiveDirective("op_id3", kZeroTtl);
+  directive_list_->AddReceiveDirective("op_id3", kLargeTtl);
+  directive_list_->AddReceiveDirective("op_id7", kZeroTtl);
+
+  EXPECT_EQ("op_id3", directive_list_->GetNextReceive()->op_id);
+}
+
+TEST_F(AudioDirectiveListTest, OutOfOrderAndMultiple) {
+  const base::TimeDelta kZeroTtl = base::TimeDelta::FromMilliseconds(0);
+  const base::TimeDelta kLargeTtl = base::TimeDelta::FromSeconds(0x7331);
+
+  EXPECT_EQ(NULL, directive_list_->GetNextTransmit().get());
+  EXPECT_EQ(NULL, directive_list_->GetNextReceive().get());
+
+  directive_list_->AddTransmitDirective("token1", "op_id1", kZeroTtl);
+  directive_list_->AddTransmitDirective("token2", "op_id2", kLargeTtl);
+  directive_list_->AddTransmitDirective("token3", "op_id1", kLargeTtl);
+
+  // Should keep getting the directive till it expires or we add a newer one.
+  EXPECT_EQ("token3", directive_list_->GetNextTransmit()->token);
+  EXPECT_EQ("token3", directive_list_->GetNextTransmit()->token);
+  EXPECT_EQ("token3", directive_list_->GetNextTransmit()->token);
+  EXPECT_EQ(NULL, directive_list_->GetNextReceive().get());
+
+  directive_list_->AddReceiveDirective("op_id1", kLargeTtl);
+  directive_list_->AddReceiveDirective("op_id3", kZeroTtl);
+  directive_list_->AddReceiveDirective("op_id3", kLargeTtl);
+  directive_list_->AddReceiveDirective("op_id7", kLargeTtl);
+
+  // Should keep getting the directive till it expires or we add a newer one.
+  EXPECT_EQ("op_id7", directive_list_->GetNextReceive()->op_id);
+  EXPECT_EQ("op_id7", directive_list_->GetNextReceive()->op_id);
+  EXPECT_EQ("op_id7", directive_list_->GetNextReceive()->op_id);
+}
+
+}  // namespace copresence