test_Class.html
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<html>
<head>
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript"><!--
var isMozilla = (navigator.userAgent.indexOf("compatible") == -1);
function test_01_Class_create (t) {
t.plan( 3 );
var cls = OpenLayers.Class.create();
cls.prototype = {
initialize: function () {
if (isMozilla)
t.ok(this instanceof cls,
"initialize is called on the right class");
else
t.ok(true, "initialize is called");
}
};
var obj = new cls();
t.eq(typeof obj, "object", "obj is an object");
if (isMozilla)
t.ok(obj instanceof cls,
"object is of the right class");
else
t.ok(true, "this test doesn't work in IE");
}
function test_02_Class_inherit (t) {
t.plan( 20 );
var A = OpenLayers.Class.create();
var initA = 0;
A.prototype = {
count: 0,
initialize: function () {
initA++;
this.count++;
}
};
var B = OpenLayers.Class.create();
var initB = 0;
B.prototype = OpenLayers.Class.inherit( A, {
initialize: function () {
A.prototype.initialize.apply(this, arguments);
initB++;
this.count++;
}
});
var mixin = OpenLayers.Class.create()
mixin.prototype = {
mixed: true
};
t.eq( initA, 0, "class A not inited" );
t.eq( initB, 0, "class B not inited" );
var objA = new A();
t.eq( objA.count, 1, "object A init" );
t.eq( initA, 1, "class A init" );
if (isMozilla)
t.ok( objA instanceof A, "obj A isa A" );
else
t.ok( true, "IE sucks" );
var objB = new B();
t.eq( initA, 2, "class A init" );
t.eq( initB, 1, "class B init" );
t.eq( objB.count, 2, "object B init twice" );
if (isMozilla) {
t.ok( objB instanceof A, "obj B isa A" );
t.ok( objB instanceof B, "obj B isa B" );
} else {
t.ok( true, "IE sucks" );
t.ok( true, "IE sucks" );
}
var C = OpenLayers.Class.create();
C.prototype = OpenLayers.Class.inherit( B, mixin, {count: 0} );
t.eq( initA, 2, "class A init unchanged" );
t.eq( initB, 1, "class B init unchanged" );
var objC = new C();
t.eq( initA, 3, "class A init changed" );
t.eq( initB, 2, "class B init changed" );
t.eq( objC.count, 2, "object C init changed" );
if (isMozilla) {
t.ok( objC instanceof A, "obj C isa A" );
t.ok( objC instanceof B, "obj C isa B" );
t.ok( objC instanceof C, "obj C isa C" );
t.ok( !(objC instanceof mixin), "obj C isn'ta mixin" );
} else {
t.ok( true, "IE sucks" );
t.ok( true, "IE sucks" );
t.ok( true, "IE sucks" );
t.ok( true, "IE sucks" );
}
t.eq( objC.mixed, true, "class C mixes has mixin properties" );
}
// -->
</script>
</head>
<body>
</body>
</html>