Add network setup code to BlimpClientContextImpl

blimp/client/core/blimp_client_context_impl_unittest.cc

 // Copyright 2016 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 "blimp/client/core/blimp_client_context_impl.h"
 
+#include "base/macros.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "base/threading/thread.h"
 #include "blimp/client/public/blimp_client_context_delegate.h"
 #include "blimp/client/public/contents/blimp_contents.h"
 #include "blimp/client/test/test_blimp_client_context_delegate.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blimp {
 namespace client {
 namespace {
 
-TEST(BlimpClientContextImpl, CreatedBlimpContentsGetsHelpersAttached) {
-  BlimpClientContextImpl blimp_client_context;
+class BlimpClientContextImplTest : public testing::Test {
+ public:
+  BlimpClientContextImplTest() : io_thread_("BlimpTestIO") {}
+  ~BlimpClientContextImplTest() override {}
+
+  void SetUp() override {
+    base::Thread::Options options;
+    options.message_loop_type = base::MessageLoop::TYPE_IO;
+    io_thread_.StartWithOptions(options);
+  }
+
+  void TearDown() override {
+    io_thread_.Stop();
+    base::RunLoop().RunUntilIdle();
+  }
+
+ protected:
+  // The thread to use for IO related tasks.
+  base::Thread io_thread_;
+
+ private:
+  // Message loop for the test thread.
+  base::MessageLoop message_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(BlimpClientContextImplTest);
+};
+
+TEST_F(BlimpClientContextImplTest, CreatedBlimpContentsGetsHelpersAttached) {
+  BlimpClientContextImpl blimp_client_context(io_thread_.task_runner());
   TestBlimpClientContextDelegate delegate;
   blimp_client_context.SetDelegate(&delegate);
 
+  BlimpContents* attached_blimp_contents = nullptr;
+
+  EXPECT_CALL(delegate, AttachBlimpContentsHelpers(testing::_))
+      .WillOnce(testing::SaveArg<0>(&attached_blimp_contents))
+      .RetiresOnSaturation();
+
   std::unique_ptr<BlimpContents> blimp_contents =
       blimp_client_context.CreateBlimpContents();
   DCHECK(blimp_contents);
-  DCHECK_EQ(blimp_contents.get(),
-            delegate.GetBlimpContentsWithLastAttachedHelpers());
+  DCHECK_EQ(blimp_contents.get(), attached_blimp_contents);
 }
 
 }  // namespace
 }  // namespace client
 }  // namespace blimp