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<!DOCTYPE html>
<!-- Author: attila@google.com (Attila Bodis) -->
<html>
<!--
Copyright 2008 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.ui.registry</title>
<script src="../base.js"></script>
<script>
goog.require('goog.object');
goog.require('goog.testing.jsunit');
goog.require('goog.ui.registry');
</script>
</head>
<body>
<div id="x" class="fake-component-x"></div>
<div id="y" class="fake-component-y fake-component-x"></div>
<div id="z" class="fake-component-z"></div>
<div id="u"></div>
<script>
// Fake component and renderer implementations, for testing only.
// UnknownComponent has no default renderer or decorator registered.
function UnknownComponent() {
}
// FakeComponentX's default renderer is FakeRenderer. It also has a
// decorator.
function FakeComponentX() {
this.element = null;
}
FakeComponentX.prototype.decorate = function(element) {
this.element = element;
};
// FakeComponentY doesn't have an explicitly registered default
// renderer; it should inherit the default renderer from its superclass.
// It does have a decorator registered.
function FakeComponentY() {
FakeComponentX.call(this);
}
goog.inherits(FakeComponentY, FakeComponentX);
// FakeComponentZ is just another component. Its default renderer is
// FakeSingletonRenderer, but it has no decorator registered.
function FakeComponentZ() {
}
// FakeRenderer is a stateful renderer.
function FakeRenderer() {
}
// FakeSingletonRenderer is a stateless renderer that can be used as a
// singleton.
function FakeSingletonRenderer() {
}
FakeSingletonRenderer.instance_ = new FakeSingletonRenderer();
FakeSingletonRenderer.getInstance = function() {
return FakeSingletonRenderer.instance_;
};
function setUp() {
goog.ui.registry.setDefaultRenderer(FakeComponentX, FakeRenderer);
goog.ui.registry.setDefaultRenderer(FakeComponentZ,
FakeSingletonRenderer);
goog.ui.registry.setDecoratorByClassName('fake-component-x',
function() {
return new FakeComponentX();
});
goog.ui.registry.setDecoratorByClassName('fake-component-y',
function() {
return new FakeComponentY();
});
}
function tearDown() {
goog.ui.registry.reset();
}
function testGetDefaultRenderer() {
var rx1 = goog.ui.registry.getDefaultRenderer(FakeComponentX);
var rx2 = goog.ui.registry.getDefaultRenderer(FakeComponentX);
assertTrue('FakeComponentX\'s default renderer must be a FakeRenderer',
rx1 instanceof FakeRenderer);
assertNotEquals('Each call to getDefaultRenderer must create a new ' +
'FakeRenderer', rx1, rx2);
var ry = goog.ui.registry.getDefaultRenderer(FakeComponentY);
assertTrue('FakeComponentY must inherit its default renderer from ' +
'its superclass', ry instanceof FakeRenderer);
var rz1 = goog.ui.registry.getDefaultRenderer(FakeComponentZ);
var rz2 = goog.ui.registry.getDefaultRenderer(FakeComponentZ);
assertTrue('FakeComponentZ\' default renderer must be a ' +
'FakeSingletonRenderer', rz1 instanceof FakeSingletonRenderer);
assertEquals('Each call to getDefaultRenderer must return the ' +
'singleton instance of FakeSingletonRenderer', rz1, rz2);
assertNull('getDefaultRenderer must return null for unknown component',
goog.ui.registry.getDefaultRenderer(UnknownComponent));
}
function testSetDefaultRenderer() {
var rx1 = goog.ui.registry.getDefaultRenderer(FakeComponentX);
assertTrue('FakeComponentX\'s renderer must be FakeRenderer',
rx1 instanceof FakeRenderer);
var ry1 = goog.ui.registry.getDefaultRenderer(FakeComponentY);
assertTrue('FakeComponentY must inherit its default renderer from ' +
'its superclass', ry1 instanceof FakeRenderer);
goog.ui.registry.setDefaultRenderer(FakeComponentX,
FakeSingletonRenderer);
var rx2 = goog.ui.registry.getDefaultRenderer(FakeComponentX);
assertEquals('FakeComponentX\'s renderer must be FakeSingletonRenderer',
FakeSingletonRenderer.getInstance(), rx2);
var ry2 = goog.ui.registry.getDefaultRenderer(FakeComponentY);
assertEquals('FakeComponentY must inherit the new default renderer ' +
'from its superclass', FakeSingletonRenderer.getInstance(), ry2);
goog.ui.registry.setDefaultRenderer(FakeComponentY, FakeRenderer);
var rx3 = goog.ui.registry.getDefaultRenderer(FakeComponentX);
assertEquals('FakeComponentX\'s renderer must be unchanged',
FakeSingletonRenderer.getInstance(), rx3);
var ry3 = goog.ui.registry.getDefaultRenderer(FakeComponentY);
assertTrue('FakeComponentY must now have its own default renderer',
ry3 instanceof FakeRenderer);
assertThrows('Calling setDefaultRenderer with non-function component ' +
'must throw error',
function() {
goog.ui.registry.setDefaultRenderer('Not function', FakeRenderer);
});
assertThrows('Calling setDefaultRenderer with non-function renderer ' +
'must throw error',
function() {
goog.ui.registry.setDefaultRenderer(FakeComponentX, 'Not function');
});
}
function testGetDecoratorByClassName() {
var dx1 = goog.ui.registry.getDecoratorByClassName('fake-component-x');
var dx2 = goog.ui.registry.getDecoratorByClassName('fake-component-x');
assertTrue('fake-component-x must be decorated by a FakeComponentX',
dx1 instanceof FakeComponentX);
assertNotEquals('Each call to getDecoratorByClassName must return a ' +
'new FakeComponentX instance', dx1, dx2);
var dy1 = goog.ui.registry.getDecoratorByClassName('fake-component-y');
var dy2 = goog.ui.registry.getDecoratorByClassName('fake-component-y');
assertTrue('fake-component-y must be decorated by a FakeComponentY',
dy1 instanceof FakeComponentY);
assertNotEquals('Each call to getDecoratorByClassName must return a ' +
'new FakeComponentY instance', dy1, dy2);
assertNull('getDecoratorByClassName must return null for unknown class',
goog.ui.registry.getDecoratorByClassName('fake-component-z'));
assertNull('getDecoratorByClassName must return null for empty string',
goog.ui.registry.getDecoratorByClassName(''));
}
function testSetDecoratorByClassName() {
var dx1, dx2;
dx1 = goog.ui.registry.getDecoratorByClassName('fake-component-x');
assertTrue('fake-component-x must be decorated by a FakeComponentX',
dx1 instanceof FakeComponentX);
goog.ui.registry.setDecoratorByClassName('fake-component-x',
function() {
return new UnknownComponent();
});
dx2 = goog.ui.registry.getDecoratorByClassName('fake-component-x');
assertTrue('fake-component-x must now be decorated by UnknownComponent',
dx2 instanceof UnknownComponent);
assertThrows('Calling setDecoratorByClassName with invalid class name ' +
'must throw error',
function() {
goog.ui.registry.setDecoratorByClassName('', function() {
return new UnknownComponent();
});
});
assertThrows('Calling setDecoratorByClassName with non-function ' +
'decorator must throw error',
function() {
goog.ui.registry.setDecoratorByClassName('fake-component-x',
'Not function');
});
}
function testGetDecorator() {
var dx = goog.ui.registry.getDecorator(document.getElementById('x'));
assertTrue('Decorator for element with fake-component-x class must be ' +
'a FakeComponentX', dx instanceof FakeComponentX);
var dy = goog.ui.registry.getDecorator(document.getElementById('y'));
assertTrue('Decorator for element with fake-component-y class must be '
+ 'a FakeComponentY', dy instanceof FakeComponentY);
var dz = goog.ui.registry.getDecorator(document.getElementById('z'));
assertNull('Decorator for element with unknown class must be null', dz);
var du = goog.ui.registry.getDecorator(document.getElementById('u'));
assertNull('Decorator for element without CSS class must be null', du);
}
function testReset() {
assertNotEquals('Some renderers must be registered', 0,
goog.object.getCount(goog.ui.registry.defaultRenderers_));
assertNotEquals('Some decorators must be registered', 0,
goog.object.getCount(goog.ui.registry.decoratorFunctions_));
goog.ui.registry.reset();
assertTrue('No renderers must be registered',
goog.object.isEmpty(goog.ui.registry.defaultRenderers_));
assertTrue('No decorators must be registered',
goog.object.isEmpty(goog.ui.registry.decoratorFunctions_));
}
</script>
</body>
</html>
|
