Content handler for python.

examples/python/python_apptest.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 <stdio.h>
+
+#include "base/run_loop.h"
+#include "examples/python/echo_service.mojom.h"
+#include "mojo/public/c/system/main.h"
+#include "mojo/public/cpp/application/application_delegate.h"
+#include "mojo/public/cpp/application/application_impl.h"
+#include "mojo/public/cpp/application/application_runner.h"
+#include "mojo/public/cpp/application/application_test_base.h"
+#include "mojo/public/cpp/utility/run_loop.h"
+
+namespace mojo {
+namespace examples {
+
+class PythonApplicationTest : public test::ApplicationTestBase {

[qsr, 2015/01/07 15:14:45]

Did you think about using //example/apptest instead of rewriting a new test. You
should be able to reimplement the same application, written in python, and the
same test should pass -> you would use mappings to point the tested application
to the python implementation.

[etiennej, 2015/01/08 11:23:12]

//example/apptest requires more support code: in particular, implementation of
binding services to clients. Given that I want to test the content handler here,
I think it would make more sense to wait until we have a proper python support
library before testing more complex cases, and merge tests.

+ public:
+  PythonApplicationTest() : ApplicationTestBase() {}
+  ~PythonApplicationTest() override {}
+
+ protected:
+  // ApplicationTestBase:
+  void SetUp() override {
+    ApplicationTestBase::SetUp();
+
+    application_impl()->ConnectToService("mojo:py_service", &echo_service_);
+  }
+
+  EchoServicePtr echo_service_;
+
+ private:
+  MOJO_DISALLOW_COPY_AND_ASSIGN(PythonApplicationTest);
+};
+
+class ResponseRecorder {
+ public:
+  void set_record(const String& value) {
+    has_record_ = true;
+    value_ = value;
+  }
+
+  bool has_record() {
+    return has_record_;
+  }
+
+  const String& get_record() {
+    return value_;
+  }
+
+ private:
+  String value_;
+  bool has_record_ = false;
+};
+
+class ResponseCallback : public mojo::Callback<void(const String&)>::Runnable {
+ public:
+  ResponseCallback(ResponseRecorder* recorder) : recorder_(recorder) {};
+  ~ResponseCallback() {};
+
+  void Run(const String& value) const override {
+    recorder_->set_record(value);
+    base::MessageLoop::current()->QuitWhenIdle();
+  }
+
+  ResponseRecorder* recorder_;
+};
+
+TEST_F(PythonApplicationTest, CallMethodOnService) {
+  // Verify that we can call a method on a python service and get an answer.
+  const String& test_string = "Hello, World!";
+  ResponseRecorder responseRecoder;
+  ResponseCallback responseCallback(&responseRecoder);
+  echo_service_->EchoString(test_string, responseCallback);
+  base::RunLoop().Run();
+  EXPECT_TRUE(responseRecoder.has_record());
+  EXPECT_TRUE(test_string == responseRecoder.get_record());
+}
+
+}  // namespace examples
+}  // namespace mojo
+