chromium/components/performance_manager/test_support/decorators_utils.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_PERFORMANCE_MANAGER_TEST_SUPPORT_DECORATORS_UTILS_H_
#define COMPONENTS_PERFORMANCE_MANAGER_TEST_SUPPORT_DECORATORS_UTILS_H_

#include <utility>

#include "base/run_loop.h"
#include "base/test/bind.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/graph/page_node.h"
#include "components/performance_manager/public/performance_manager.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace performance_manager {

namespace testing {

// Helper function that allows testing that a decorator class property has the
// expected value. This function should be called from the main thread and be
// passed the WebContents pointer associated with the PageNode to check.
template <class T>
void TestPageNodePropertyOnPMSequence(content::WebContents* contents,
                                      T* (*data_getter)(const PageNode*),
                                      bool (T::*getter)() const,
                                      bool expected_value);

// Helper function that simulates a change in a property of a page node
// decorator and test if the property gets update.
template <class T>
void EndToEndBooleanPropertyTest(content::WebContents* contents,
                                 T* (*data_getter)(const PageNode*),
                                 bool (T::*pm_getter)() const,
                                 void (*ui_thread_setter)(content::WebContents*,
                                                          bool),
                                 bool default_state = false);

// Implementation details:

template <class T>
void TestPageNodePropertyOnPMSequence(content::WebContents* contents,
                                      T* (*data_getter)(const PageNode*),
                                      bool (T::*getter)() const,
                                      bool expected_value) { … }

template <class T>
void EndToEndBooleanPropertyTest(content::WebContents* contents,
                                 T* (*data_getter)(const PageNode*),
                                 bool (T::*pm_getter)() const,
                                 void (*ui_thread_setter)(content::WebContents*,
                                                          bool),
                                 bool default_state) { … }

}  // namespace testing

}  // namespace performance_manager

#endif  // COMPONENTS_PERFORMANCE_MANAGER_TEST_SUPPORT_DECORATORS_UTILS_H_