Mojo: Add a trivial end-to-end (in-process) test of Mojo shell.

mojo/shell/shell_test_base.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 "mojo/shell/shell_test_base.h"
 
+#include "base/command_line.h"
+#include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "build/build_config.h"
+#include "mojo/shell/context.h"
+#include "net/base/filename_util.h"
+#include "url/gurl.h"
+
 namespace mojo {
 namespace shell {
 namespace test {
 
 ShellTestBase::ShellTestBase() {
 }
 
 ShellTestBase::~ShellTestBase() {
 }
 
+void ShellTestBase::InitMojo() {
+  DCHECK(!message_loop_);
+  DCHECK(!shell_context_);
+  message_loop_.reset(new base::MessageLoop());
+  shell_context_.reset(new Context());
+}
+
+void ShellTestBase::LaunchServiceInProcess(
+    const GURL& service_url,
+    const std::string& service_name,
+    ScopedMessagePipeHandle client_handle) {
+  DCHECK(message_loop_);
+  DCHECK(shell_context_);
+
+  base::FilePath base_dir = base::MakeAbsoluteFilePath(
+      base::CommandLine::ForCurrentProcess()->GetProgram().DirName());
+  // On Mac and Windows, libraries are dumped beside the executables.
+#if defined(OS_MACOSX) || defined(OS_WIN)
+  base::FilePath service_dir(base_dir);
+#else
+  // On Linux, they're under lib/.
+  base::FilePath service_dir(base_dir.AppendASCII("lib"));
+#endif
+  shell_context_->set_mojo_origin(net::FilePathToFileURL(service_dir).spec());
+
+  shell_context_->service_manager()->ConnectToService(
+      service_url, service_name, client_handle.Pass(), GURL());
+}
+
 }  // namespace test
 }  // namespace shell
 }  // namespace mojo