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<html>
<head>
<script src="../OLLoader.js"></script>
<script type="text/javascript">
// remove this next line at 3.0
var isMozilla = (navigator.userAgent.indexOf("compatible") == -1);
function test_Class(t) {
t.plan(1);
var MyClass = OpenLayers.Class({
initialize: function () {
t.ok(false, "initialize should not be called");
}
});
t.ok(true,
"defining a class does not call the constructor for the class");
}
function test_Class_constructor(t) {
t.plan(7);
var MyClass = OpenLayers.Class({
prop: null,
classProp: {'bad': 'practice'},
initialize: function(a1, a2) {
this.prop = "instance property";
t.ok(true,
"initialize is called when a new instance is created");
t.eq(a1, arg1,
"initialize is called with the proper first argument");
t.eq(a2, arg2,
"initialize is called with the proper second argument");
},
CLASS_NAME: "MyClass"
});
var arg1 = "anArg";
var arg2 = {"another": "arg"};
var myObj = new MyClass(arg1, arg2);
t.eq(MyClass.prop, null,
"creating a new instance doesn't modify the class");
t.eq(myObj.prop, "instance property",
"the new instance is assigned a property in the constructor");
t.eq(myObj["CLASS_NAME"], "MyClass",
"the new object is an instance of MyClass");
// allow for modification of class properties
MyClass.prototype.classProp.bad = "good";
t.eq(myObj.classProp.bad, "good",
"modifying a class property modifies properties of the instance");
}
function test_Class_inheritance(t) {
t.plan(7);
var BaseClass = OpenLayers.Class({
prop: "base",
initialize: function() {
t.ok(false,
"base class constructor is not called during inheritance");
},
toString: function() {
return "toString inherited";
},
CLASS_NAME: "BaseClass"
});
var ChildClass = OpenLayers.Class(BaseClass, {
initialize: function() {
t.ok(true,
"child class constructor is called in creating an instance");
},
CLASS_NAME: "ChildClass"
});
var child = new ChildClass();
t.eq(child.prop, "base",
"instance of child inherits properties from base");
t.eq(child.toString(), "toString inherited",
"instance of child inherits toString method from base");
t.eq(child["CLASS_NAME"],
"ChildClass",
"new object is an instance of the child class");
var F = OpenLayers.Class(Object, {});
t.ok(!("initialize" in Object.prototype), "no messing with non OL prototypes");
// test with an abstract class (i.e. a class that doesn't have an initialize
// method) as the parent class
var Vehicule = OpenLayers.Class({
numWheels: null
});
var Bike = OpenLayers.Class(Vehicule, {
initialize: function() {
this.numWheels = 2;
}
});
var b = new Bike();
t.ok(b instanceof Vehicule, "a bike is a vehicule");
// test inheritance with something that has a non-function initialize property
var P = OpenLayers.Class({
initialize: "foo"
});
var C = OpenLayers.Class(P, {
initialize: function() {
// pass
}
});
var c = new C();
t.eq(P.prototype.initialize, "foo", "Class restores custom initialize property.");
}
function test_Class_multiple_inheritance(t) {
t.plan(7);
var BaseClass1 = OpenLayers.Class({
override: "base1",
prop: "base1",
variable: null,
initialize: function() {
t.ok(true,
"only called when an instance of this class is created");
},
CLASS_NAME: "BaseClass1"
});
var BaseClass2 = OpenLayers.Class({
override: "base2",
initialize: function() {
t.ok(false,
"base class constructor is not called during inheritance");
},
CLASS_NAME: "BaseClass1"
});
var ChildClass = OpenLayers.Class(BaseClass1, BaseClass2, {
initialize: function(arg) {
if(this.prop == "base1") {
this.variable = "child";
}
t.ok(true,
"only child class constructor is called on initialization");
},
CLASS_NAME: "ChildClass"
});
var arg = "child";
var child = new ChildClass(arg);
t.eq(child.variable, arg,
"inheritance works before construction");
t.eq(child.prop, "base1",
"properties are inherited with multiple classes")
t.eq(child.override, "base2",
"properties are inherited in the expected order");
t.eq(child["CLASS_NAME"],
"ChildClass",
"object is an instance of child class");
var base1 = new BaseClass1();
t.eq(base1.override, "base1",
"inheritance doesn't mess with parents");
}
function test_inheritance_chain(t) {
t.plan(1);
var A = new OpenLayers.Class({
initialize: function() {
this.a = 'foo';
}
});
var B = new OpenLayers.Class(A, {});
var C = new OpenLayers.Class(B, {
initialize: function() {
B.prototype.initialize.apply(this, arguments);
this.a = this.a + 'bar';
}
});
var c = new C;
t.eq(c.a, 'foobar', 'constructor at the root is called');
}
// Remove this at 3.0
function test_Class_backwards(t) {
t.plan(4);
// test that a new style class supports old style inheritance
var NewClass = OpenLayers.Class({
newProp: "new",
initialize: function() {
t.ok(false, "the base class is never instantiated");
},
toString: function() {
return "new style";
}
});
var OldClass = OpenLayers.Class.create();
OldClass.prototype = OpenLayers.Class.inherit(NewClass, {
oldProp: "old",
initialize: function() {
t.ok(true, "only the child class constructor is called");
}
});
var oldObj = new OldClass();
t.eq(oldObj.oldProp, "old",
"old style classes can still be instantiated");
t.eq(oldObj.newProp, "new",
"old style inheritance of properties works with new style base");
t.eq(oldObj.toString(), "new style",
"toString inheritance works with backwards style");
}
// Remove this at 3.0
function test_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");
}
// Remove this at 3.0
function test_Class_inherit (t) {
t.plan( 20 );
var A = OpenLayers.Class.create();
var initA = 0;
A.prototype = {
count: 0,
mixed: false,
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 has mixin properties" );
}
function test_Class_isInstanceOf(t) {
t.plan(7);
var wfs = new OpenLayers.Layer.WFS({});
var drag = new OpenLayers.Control.DragFeature({});
t.ok(wfs instanceof OpenLayers.Layer.WFS, "isInstanceOf(WFS)");
t.ok(wfs instanceof OpenLayers.Layer, "isInstanceOf(Layer)");
t.ok(!(wfs instanceof OpenLayers.Format), "not isInstanceOf(Format)");
t.ok(drag instanceof OpenLayers.Control, "drag is a control");
t.ok(!(drag instanceof OpenLayers.Layer), "drag is not a layer");
//test a class with multiple inheritance
var BadClass=OpenLayers.Class(OpenLayers.Layer.WFS, OpenLayers.Control.DragFeature);
var bad = new BadClass({});
t.ok(!(bad instanceof OpenLayers.Control), "bad is a control, but it is also a layer and we cannot have two superclasses");
t.ok(bad instanceof OpenLayers.Layer, "bad is a layer, it inherits from the layer first");
}
//
// IGN's GeoPortal API overwrite prototypes of OpenLayers constructors.
// The tests below aim to cover their usage pattens.
//
// the overwrite function under test
function overwrite(C, o) {
if(typeof o.initialize === "function" &&
C === C.prototype.initialize) {
// OL 2.11
var proto = C.prototype;
var staticProps = OpenLayers.Util.extend({}, C);
C = o.initialize;
C.prototype = proto;
OpenLayers.Util.extend(C, staticProps);
}
OpenLayers.Util.extend(C.prototype, o);
return C;
}
function test_overwrite_1(t) {
// overwrite constructor
t.plan(1);
var A = OpenLayers.Class({
initialize: function() {
this.a = "foo";
}
});
A = overwrite(A, {
initialize: function() {
this.a = "bar";
}
});
var a = new A;
t.eq(a.a, "bar", "ctor overwritten");
}
function test_overwrite_2(t) {
// overwrite regular method
t.plan(1);
var A = OpenLayers.Class({
initialize: function() {
},
method: function() {
this.a = "foo";
}
});
A = overwrite(A, {
method: function() {
this.a = "bar";
}
});
var a = new A;
a.method();
t.eq(a.a, "bar", "method overwritten");
}
function test_overwrite_3(t) {
// overwrite constructor of subclass
t.plan(1);
var A = OpenLayers.Class({
initialize: function() {
this.a = "foo";
}
});
var B = OpenLayers.Class(A, {
initialize: function() {
A.prototype.initialize.call(this);
}
});
B = overwrite(B, {
initialize: function() {
A.prototype.initialize.call(this);
this.a = "bar";
}
});
var b = new B;
t.eq(b.a, "bar", "ctor overwritten");
}
function test_overwrite_4(t) {
// overwrite constructor of parent class
t.plan(1);
var A = OpenLayers.Class({
initialize: function() {
this.a = "foo";
}
});
var B = OpenLayers.Class(A, {
initialize: function() {
A.prototype.initialize.call(this);
}
});
A = overwrite(A, {
initialize: function() {
this.a = "bar";
}
});
var b = new B;
t.eq(b.a, "bar", "ctor overwritten");
}
function test_overwrite_5(t) {
// overwrite constructor of parent class, which itself
// doesn't defined "initialize"
t.plan(2);
var A = OpenLayers.Class({
initialize: function() {
this.a = "foo";
}
});
var B = OpenLayers.Class(A, {});
var _A = A;
A = overwrite(A, {
initialize: function() {
this.a = "bar";
}
});
var b = new B;
t.ok(A.prototype === _A.prototype, "A and _A share the prototype");
t.eq(b.a, "bar", "ctor overwritten");
}
function test_overwrite_6(t) {
// with static methods
t.plan(1);
var A = OpenLayers.Class({
initialize: function() {
}
});
A.staticMethod = function() {};
A = overwrite(A, {
initialize: function() {
}
});
var exc = false;
try {
A.staticMethod();
} catch(e) {
exc = true;
}
t.ok(!exc, "static method still there");
}
</script>
</head>
<body>
</body>
</html>
|
