MD Settings: animation interface

chrome/test/data/webui/settings/transition_browsertest.js

Index: chrome/test/data/webui/settings/transition_browsertest.js
diff --git a/chrome/test/data/webui/settings/transition_browsertest.js b/chrome/test/data/webui/settings/transition_browsertest.js
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+++ b/chrome/test/data/webui/settings/transition_browsertest.js
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+// 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.
+
+/** @fileoverview Tests for settings.animation. */
+
+/** @const {string} Path to root from chrome/test/data/webui/settings/. */
+var ROOT_PATH = '../../../../../';
+
+/**
+ * @constructor
+ * @extends testing.Test
+*/
+function SettingsTransitionBrowserTest() {}
+
+SettingsTransitionBrowserTest.prototype = {
+  __proto__: testing.Test.prototype,
+
+  /** @override */
+  browsePreload: 'chrome://md-settings/animation/transition.html',
+
+  /** @override */
+  extraLibraries: [
+    ROOT_PATH + 'ui/webui/resources/js/cr.js',
+    ROOT_PATH + 'ui/webui/resources/js/cr/event_target.js',
+    ROOT_PATH + 'chrome/browser/resources/settings/animation/animation.js',
+    ROOT_PATH + 'third_party/mocha/mocha.js',
+    '../mocha_adapter.js',
+  ],
+
+  /** @override */
+  isAsync: true,
+
+  /** @override */
+  runAccessibilityChecks: false,
+};
+
+TEST_F('SettingsTransitionBrowserTest', 'Transition', function() {
+  var self = this;
+
+  var MockTransition = function() {
+    this.cleanedUp = false;
+    this.resolver = new PromiseResolver();
+    this.finished = this.resolver.promise;
+
+    this.setUp();
+  };
+
+  MockTransition.prototype = {
+    __proto__: settings.animation.Transition.prototype,
+
+    finish: function() {
+      this.resolver.resolve();
+    },
+
+    cancel: function() {
+      this.resolver.reject();
+    },
+
+    cleanUp: function() {
+      expectFalse(this.cleanedUp);
+      this.cleanedUp = true;
+    },
+  };
+
+  var MockAnimatedTransition = function(el, duration) {
+    this.cleanedUp = false;
+    this.animation_ = new settings.animation.Animation(
+        el,
+        [{
+          height: '100px',
+        }, {
+          height: '200px',
+        }], {
+          duration: duration,
+          fill: 'forwards'
+        });
+    this.finished = this.animation_.finished;
+
+    this.setUp();
+  };
+
+  MockAnimatedTransition.prototype = {
+    __proto__: MockTransition.prototype,
+
+    finish: function() {
+      if (this.done_)
+        return;
+      this.done_ = true;
+      this.animation_.finish();
+    },
+
+    cancel: function() {
+      if (this.done_)
+        return;
+      this.done_ = true;
+      this.animation_.cancel();
+    },
+  };
+
+  suite('settings.animation.Transition', function() {
+    var div;
+    var transition;
+
+    setup(function() {
+      div = document.createElement('div');
+      document.body.appendChild(div);
+    });
+
+    teardown(function() {
+      div.remove();
+    });
+
+    suite('transition completes itself', function() {
+      setup(function() {
+        transition = new MockAnimatedTransition(div, 1000);
+        expectEquals(100, div.clientHeight);
+      });
+
+      test('transition finishes', function() {
+        return transition.finished.then(function() {
+          expectEquals(200, div.clientHeight);
+          expectTrue(transition.cleanedUp);
+
+          // These should be no-ops.
+          transition.finish();
+          transition.cancel();
+        });
+      });
+    });
+
+    suite('cancel/finish', function() {
+      setup(function() {
+        transition = new MockAnimatedTransition(div, Number.MAX_VALUE);
+        expectEquals(100, div.clientHeight);
+      });
+
+      test('finish', function() {
+        transition.finish();
+
+        return transition.finished.then(function() {
+          expectEquals(200, div.clientHeight);
+          expectTrue(transition.cleanedUp);
+        });
+      });
+
+      test('cancel', function() {
+        transition.cancel();
+
+        return transition.finished.then(function() {
+          assertNotReached('Transition promise should be rejected');
+        }, function() {
+          expectEquals(0, div.clientHeight);
+          expectTrue(transition.cleanedUp);
+        });
+      });
+
+      test('finish/cancel after finishing is no-op', function() {
+        transition.finish();
+
+        // Nothing should happen.
+        transition.finish();
+        transition.cancel();
+
+        // Verify the promise is still resolved.
+        return transition.finished.then(function() {
+          expectEquals(200, div.clientHeight);
+          expectTrue(transition.cleanedUp);
+        });
+      });
+
+      test('finish/cancel after canceling is no-op', function() {
+        transition.cancel();
+
+        // Nothing should happen.
+        transition.cancel();
+        transition.finish();
+
+        // Verify the promise is still rejected.
+        return transition.finished.then(function() {
+          assertNotReached('Transition promise should be rejected');
+        }, function() {
+          expectEquals(0, div.clientHeight);
+          expectTrue(transition.cleanedUp);
+        });
+      });
+    });
+  });
+
+  suite('settings.animation.ImmediateTransition', function() {
+    test('finishes automatically', function() {
+      var transition = new settings.animation.ImmediateTransition();
+
+      return transition.finished;
+    });
+
+    test('cannot be canceled', function() {
+      var transition = new settings.animation.ImmediateTransition();
+      transition.cancel();
+
+      // Still resolves successfully.
+      return transition.finished;
+    });
+
+    test('inherited functions are no-ops', function() {
+      var transition = new settings.animation.ImmediateTransition();
+      transition.finish();
+      transition.cancel();
+      transition.cleanUp();
+
+      return transition.finished;
+    });
+  });
+
+  // Run all registered tests.
+  mocha.run();
+});