Basic HTTP pipelining support

net/http/http_pipelined_host_unittest.cc

+// Copyright (c) 2011 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 "net/http/http_pipelined_host.h"
+
+#include "net/base/ssl_config_service.h"
+#include "net/http/http_pipelined_connection.h"
+#include "net/proxy/proxy_info.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::_;
+using testing::NiceMock;
+using testing::Ref;
+using testing::Return;
+using testing::ReturnNull;
+
+static const int kMaxCapacity = 3;
+
+namespace net {
+
+static ClientSocketHandle* kDummyConnection =
+    reinterpret_cast<ClientSocketHandle*>(84);
+static HttpPipelinedStream* kDummyStream =
+    reinterpret_cast<HttpPipelinedStream*>(42);
+
+class MockHostDelegate : public HttpPipelinedHost::Delegate {
+ public:
+  MOCK_METHOD1(OnHostIdle, void(HttpPipelinedHost* host));
+  MOCK_METHOD1(OnHostHasAdditionalCapacity, void(HttpPipelinedHost* host));
+};
+
+class MockPipelineFactory : public HttpPipelinedConnection::Factory {
+ public:
+  MOCK_METHOD6(CreateNewPipeline, HttpPipelinedConnection*(
+      ClientSocketHandle* connection,
+      HttpPipelinedConnection::Delegate* delegate,
+      const SSLConfig& used_ssl_config,
+      const ProxyInfo& used_proxy_info,
+      const BoundNetLog& net_log,
+      bool was_npn_negotiated));
+};
+
+class MockPipeline : public HttpPipelinedConnection {
+ public:
+  MockPipeline(int depth, bool usable, bool active)
+      : depth_(depth),
+        usable_(usable),
+        active_(active) {
+  }
+
+  void SetState(int depth, bool usable, bool active) {
+    depth_ = depth;
+    usable_ = usable;
+    active_ = active;
+  }
+
+  virtual int depth() const OVERRIDE { return depth_; }
+  virtual bool usable() const OVERRIDE { return usable_; }
+  virtual bool active() const OVERRIDE { return active_; }
+
+  MOCK_METHOD0(CreateNewStream, HttpPipelinedStream*());
+  MOCK_METHOD1(OnStreamDeleted, void(int pipeline_id));
+  MOCK_CONST_METHOD0(used_ssl_config, const SSLConfig&());
+  MOCK_CONST_METHOD0(used_proxy_info, const ProxyInfo&());
+  MOCK_CONST_METHOD0(source, const NetLog::Source&());
+  MOCK_CONST_METHOD0(was_npn_negotiated, bool());
+
+ private:
+  int depth_;
+  bool usable_;
+  bool active_;
+};
+
+class HttpPipelinedHostTest : public testing::Test {
+ public:
+  HttpPipelinedHostTest()
+      : origin_("host", 123),
+        factory_(new MockPipelineFactory),  // Owned by host_.
+        host_(&delegate_, origin_, factory_) {
+  }
+
+  MockPipeline* AddTestPipeline(int depth, bool usable, bool active) {
+    MockPipeline* pipeline = new MockPipeline(depth, usable, active);
+    EXPECT_CALL(*factory_, CreateNewPipeline(kDummyConnection, &host_,
+                                             Ref(ssl_config_), Ref(proxy_info_),
+                                             Ref(net_log_), true))
+        .Times(1)
+        .WillOnce(Return(pipeline));
+    EXPECT_CALL(*pipeline, CreateNewStream())
+        .Times(1)
+        .WillOnce(Return(kDummyStream));
+    EXPECT_EQ(kDummyStream, host_.CreateStreamOnNewPipeline(
+        kDummyConnection, ssl_config_, proxy_info_, net_log_, true));
+    return pipeline;
+  }
+
+  void ClearTestPipeline(MockPipeline* pipeline) {
+    pipeline->SetState(0, true, true);
+    host_.OnPipelineHasCapacity(pipeline);
+  }
+
+  NiceMock<MockHostDelegate> delegate_;
+  HostPortPair origin_;
+  MockPipelineFactory* factory_;
+  HttpPipelinedHost host_;
+
+  SSLConfig ssl_config_;
+  ProxyInfo proxy_info_;
+  BoundNetLog net_log_;
+};
+
+TEST_F(HttpPipelinedHostTest, Delegate) {
+  EXPECT_TRUE(origin_.Equals(host_.origin()));
+}
+
+TEST_F(HttpPipelinedHostTest, OnHostIdle) {
+  MockPipeline* pipeline = AddTestPipeline(0, false, true);
+
+  EXPECT_CALL(delegate_, OnHostHasAdditionalCapacity(&host_))
+      .Times(0);
+  EXPECT_CALL(delegate_, OnHostIdle(&host_))
+      .Times(1);
+  host_.OnPipelineHasCapacity(pipeline);
+}
+
+TEST_F(HttpPipelinedHostTest, OnHostHasAdditionalCapacity) {
+  MockPipeline* pipeline = AddTestPipeline(1, true, true);
+
+  EXPECT_CALL(delegate_, OnHostHasAdditionalCapacity(&host_))
+      .Times(2);
+  EXPECT_CALL(delegate_, OnHostIdle(&host_))
+      .Times(0);
+
+  host_.OnPipelineHasCapacity(pipeline);
+
+  EXPECT_CALL(delegate_, OnHostIdle(&host_))
+      .Times(1);
+  ClearTestPipeline(pipeline);
+}
+
+TEST_F(HttpPipelinedHostTest, IgnoresUnusablePipeline) {
+  MockPipeline* pipeline = AddTestPipeline(1, false, true);
+
+  EXPECT_FALSE(host_.IsExistingPipelineAvailable());
+  EXPECT_EQ(NULL, host_.CreateStreamOnExistingPipeline());
+
+  ClearTestPipeline(pipeline);
+}
+
+TEST_F(HttpPipelinedHostTest, IgnoresInactivePipeline) {
+  MockPipeline* pipeline = AddTestPipeline(1, true, false);
+
+  EXPECT_FALSE(host_.IsExistingPipelineAvailable());
+  EXPECT_EQ(NULL, host_.CreateStreamOnExistingPipeline());
+
+  ClearTestPipeline(pipeline);
+}
+
+TEST_F(HttpPipelinedHostTest, IgnoresFullPipeline) {
+  MockPipeline* pipeline = AddTestPipeline(kMaxCapacity, true, true);
+
+  EXPECT_FALSE(host_.IsExistingPipelineAvailable());
+  EXPECT_EQ(NULL, host_.CreateStreamOnExistingPipeline());
+
+  ClearTestPipeline(pipeline);
+}
+
+TEST_F(HttpPipelinedHostTest, PicksLeastLoadedPipeline) {
+  MockPipeline* full_pipeline = AddTestPipeline(kMaxCapacity, true, true);
+  MockPipeline* usable_pipeline = AddTestPipeline(kMaxCapacity - 1, true, true);
+  MockPipeline* empty_pipeline = AddTestPipeline(0, true, true);
+
+  EXPECT_TRUE(host_.IsExistingPipelineAvailable());
+  EXPECT_CALL(*empty_pipeline, CreateNewStream())
+      .Times(1)
+      .WillOnce(ReturnNull());
+  EXPECT_EQ(NULL, host_.CreateStreamOnExistingPipeline());
+
+  ClearTestPipeline(full_pipeline);
+  ClearTestPipeline(usable_pipeline);
+  ClearTestPipeline(empty_pipeline);
+}
+
+TEST_F(HttpPipelinedHostTest, EmptyPipelineIsRemoved) {
+  MockPipeline* empty_pipeline = AddTestPipeline(0, true, true);
+
+  EXPECT_TRUE(host_.IsExistingPipelineAvailable());
+  EXPECT_CALL(*empty_pipeline, CreateNewStream())
+      .Times(1)
+      .WillOnce(Return(kDummyStream));
+  EXPECT_EQ(kDummyStream, host_.CreateStreamOnExistingPipeline());
+
+  ClearTestPipeline(empty_pipeline);
+
+  EXPECT_FALSE(host_.IsExistingPipelineAvailable());
+  EXPECT_EQ(NULL, host_.CreateStreamOnExistingPipeline());
+}
+
+}  // namespace net