Create distiller files for Reading List.

ios/chrome/browser/dom_distiller/favicon_web_state_dispatcher_impl_unittest.mm

-// 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.
-
-#import "ios/chrome/browser/dom_distiller/favicon_web_state_dispatcher_impl.h"
-
-#include "base/memory/ptr_util.h"
-#include "components/favicon/ios/web_favicon_driver.h"
-#include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
-#import "ios/testing/wait_util.h"
-#include "ios/web/public/test/test_web_thread_bundle.h"
-#include "ios/web/public/web_state/web_state_observer.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "testing/platform_test.h"
-
-namespace dom_distiller {
-
-// Test class.
-class FaviconWebStateDispatcherTest : public PlatformTest {
- public:
-  FaviconWebStateDispatcherTest() : web_state_destroyed_(false) {
-    TestChromeBrowserState::Builder builder;
-    browser_state_ = builder.Build();
-  }
-
-  web::BrowserState* GetBrowserState() { return browser_state_.get(); }
-
-  bool IsWebStateDestroyed() { return web_state_destroyed_; }
-  void WebStateDestroyed() { web_state_destroyed_ = true; }
-
- private:
-  web::TestWebThreadBundle thread_bundle_;
-  std::unique_ptr<TestChromeBrowserState> browser_state_;
-  bool web_state_destroyed_;
-};
-
-// Observer for the test.
-class TestFaviconWebStateDispatcherObserver : public web::WebStateObserver {
- public:
-  TestFaviconWebStateDispatcherObserver(web::WebState* web_state,
-                                        FaviconWebStateDispatcherTest* owner)
-      : web::WebStateObserver(web_state), owner_(owner) {}
-
-  // WebStateObserver implementation:
-  void WebStateDestroyed() override { owner_->WebStateDestroyed(); };
-
- private:
-  FaviconWebStateDispatcherTest* owner_;  // weak, owns this object.
-};
-
-// Tests that RequestWebState returns a WebState with a FaviconDriver attached.
-TEST_F(FaviconWebStateDispatcherTest, RequestWebState) {
-  FaviconWebStateDispatcherImpl dispatcher(GetBrowserState(), -1);
-  web::WebState* web_state = dispatcher.RequestWebState();
-
-  favicon::WebFaviconDriver* driver =
-      favicon::WebFaviconDriver::FromWebState(web_state);
-  EXPECT_NE(driver, nullptr);
-}
-
-// Tests that the WebState returned will be destroyed after a delay.
-TEST_F(FaviconWebStateDispatcherTest, ReturnWebState) {
-  FaviconWebStateDispatcherImpl dispatcher(GetBrowserState(), 0);
-  web::WebState* web_state = dispatcher.RequestWebState();
-
-  TestFaviconWebStateDispatcherObserver observer(web_state, this);
-
-  ConditionBlock condition = ^{
-    return IsWebStateDestroyed();
-  };
-
-  dispatcher.ReturnWebState(web_state);
-
-  ASSERT_TRUE(testing::WaitUntilConditionOrTimeout(0.5, condition));
-}
-}  // namespace dom_distiller