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Class.html
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Class.html
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<!DOCTYPE html>
<html>
<head>
<title>Class</title>
<script src="./Script/Package.js"></script>
<script src="./Script/Test.js"></script>
<script src="./Script/Class.js"></script>
</head>
<body style="font-family: 'Segoe UI'; font-size: 14px;">
<script>
eval(Packages.Inject(["Test", "Class"], false));
</script>
<script>
TestCase("create instance should success", function () {
var MyClass = Class("MyClass", {
});
var x = new MyClass();
Assert(x instanceof Class);
Assert(x.__Type === MyClass);
});
</script>
<script>
TestCase("fields cannot be deleted", function () {
var MyClass = Class("MyClass", {
a: Public(0),
b: Public(1),
});
var x = new MyClass();
delete x.GetType;
delete x.a;
delete x.b;
Assert(x.__Type === MyClass);
Assert(x.a === 0);
Assert(x.b === 1);
});
</script>
<script>
TestCase("instances don't share fields", function () {
var MyClass = Class("MyClass", {
a: Public(0),
b: Public(1),
});
var x = new MyClass();
var y = new MyClass();
Assert(x.a === 0);
Assert(x.b === 1);
Assert(y.a === 0);
Assert(y.b === 1);
x.a = 2;
y.a = 3;
Assert(x.a === 2);
Assert(x.b === 1);
Assert(y.a === 3);
Assert(y.b === 1);
});
</script>
<script>
TestCase("member function can access all members", function () {
var MyClass = Class("MyClass", {
value: Public(0),
GetValue: Public(function () {
return this.value;
}),
SetValue: Public(function (newValue) {
this.value = newValue;
}),
});
var x = new MyClass();
Assert(x.value === 0);
Assert(x.GetValue() === 0);
x.value = 1;
Assert(x.value === 1);
Assert(x.GetValue() === 1);
x.SetValue(2);
Assert(x.value === 2);
Assert(x.GetValue() === 2);
})
</script>
<script>
TestCase("protected members are not visible from outside", function () {
var MyClass = Class("MyClass", {
value: Protected(0),
GetValue: Public(function () {
return this.value;
}),
SetValue: Public(function (newValue) {
this.value = newValue;
}),
});
var x = new MyClass();
Assert(x.value === undefined);
Assert(x.GetValue() === 0);
x.SetValue(2);
Assert(x.value === undefined);
Assert(x.GetValue() === 2);
})
</script>
<script>
TestCase("private members are not visible from derived classes", function () {
var BaseClass = Class("BaseClass", {
privateMember: Private(1),
protectedMember: Protected(2),
publicMember: Public(3),
PrivateFunctionInternal: Private(function () {
return this.privateMember;
}),
ProtectedFunctionInternal: Protected(function () {
return this.protectedMember + this.privateMember;
}),
PublicFunctionInternal: Public(function () {
return this.publicMember + this.protectedMember + this.privateMember;
}),
PrivateFunctionBase: Private(function () {
return this.PrivateFunctionInternal();
}),
ProtectedFunctionBase: Protected(function () {
return this.ProtectedFunctionInternal();
}),
PublicFunctionBase: Public(function () {
return this.PublicFunctionInternal();
}),
});
var DerivedClass = Class("DerivedClass", BaseClass, {
PrivateFunction1: Public(function () {
return this.PrivateFunctionBase === undefined ? 0 : this.PrivateFunctionBase();
}),
ProtectedFunction1: Public(function () {
return this.ProtectedFunctionBase === undefined ? 0 : this.ProtectedFunctionBase();
}),
PublicFunction1: Public(function () {
return this.PublicFunctionBase === undefined ? 0 : this.PublicFunctionBase();
}),
PrivateFunction2: Public(function () {
return this.privateMember === undefined ? 0 : this.privateMember;
}),
ProtectedFunction2: Public(function () {
return this.protectedMember === undefined ? 0 : this.protectedMember;
}),
PublicFunction2: Public(function () {
return this.publicMember === undefined ? 0 : this.publicMember;
}),
});
var x = new DerivedClass();
Assert(x.privateMember === undefined);
Assert(x.protectedMember === undefined);
Assert(x.publicMember === 3);
Assert(x.PrivateFunctionInternal === undefined);
Assert(x.ProtectedFunctionInternal === undefined);
Assert(x.PublicFunctionInternal() === 6);
Assert(x.PrivateFunctionBase === undefined);
Assert(x.ProtectedFunctionBase === undefined);
Assert(x.PublicFunctionBase() === 6);
Assert(x.PrivateFunction1() === 0);
Assert(x.ProtectedFunction1() === 3);
Assert(x.PublicFunction1() === 6);
Assert(x.PrivateFunction2() === 0);
Assert(x.ProtectedFunction2() === 2);
Assert(x.PublicFunction2() === 3);
})
</script>
<script>
TestCase("deriving from a child class should success", function () {
var A = Class("A", {
DoA: Public(function (a, b) {
return a + b;
}),
GetA: Public(function () {
return this.__Type;
}),
});
var B = Class("B", A, {
DoB: Public(function (a, b) {
return a - b;
}),
GetB: Public(function () {
return this.__Type;
}),
});
var C = Class("C", B, {
DoC: Public(function (a, b) {
return a * b;
}),
GetC: Public(function () {
return this.__Type;
}),
});
Assert(A.IsAssignableFrom(A) === true);
Assert(A.IsAssignableFrom(B) === true);
Assert(A.IsAssignableFrom(C) === true);
Assert(B.IsAssignableFrom(A) === false);
Assert(B.IsAssignableFrom(B) === true);
Assert(B.IsAssignableFrom(C) === true);
Assert(C.IsAssignableFrom(A) === false);
Assert(C.IsAssignableFrom(B) === false);
Assert(C.IsAssignableFrom(C) === true);
var x = new C();
Assert(x.DoA(1, 2) === 3);
Assert(x.DoB(1, 2) === -1);
Assert(x.DoC(1, 2) === 2);
Assert(x.GetA() === C);
Assert(x.GetB() === C);
Assert(x.GetC() === C);
});
</script>
<script>
TestCase("deriving from multiple classea should success", function () {
var A = Class("A", {
DoA: Public(function (a, b) {
return a + b;
}),
GetA: Public(function () {
return this.__Type;
}),
});
var B = Class("B", {
DoB: Public(function (a, b) {
return a - b;
}),
GetB: Public(function () {
return this.__Type;
}),
});
var C = Class("C", A, B, {
DoC: Public(function (a, b) {
return a * b;
}),
GetC: Public(function () {
return this.__Type;
}),
});
Assert(A.IsAssignableFrom(A) === true);
Assert(A.IsAssignableFrom(B) === false);
Assert(A.IsAssignableFrom(C) === true);
Assert(B.IsAssignableFrom(A) === false);
Assert(B.IsAssignableFrom(B) === true);
Assert(B.IsAssignableFrom(C) === true);
Assert(C.IsAssignableFrom(A) === false);
Assert(C.IsAssignableFrom(B) === false);
Assert(C.IsAssignableFrom(C) === true);
var x = new C();
Assert(x.DoA(1, 2) === 3);
Assert(x.DoB(1, 2) === -1);
Assert(x.DoC(1, 2) === 2);
Assert(x.GetA() === C);
Assert(x.GetB() === C);
Assert(x.GetC() === C);
});
</script>
<script>
TestCase("functions should overload by argument types", function () {
var A = Class("A", {
});
var B = Class("B", A, {
});
var C = Class("C", A, {
});
var MyClass = Class("MyClass", {
Print: Private(function (args) {
var result = "";
for (var i in args) {
if (i > 0) result += ", ";
result += typeof (args[i]);
}
return result;
}),
Do: Public.Overload(
[], function () {
return "1: " + this.Print(arguments);
},
[__Number, __String, __Boolean], function (a, b, c) {
return "2: " + this.Print(arguments);
},
[__Function], function (x) {
return "3: " + this.Print(arguments);
},
[C], function (x) {
return "4: " + this.Print(arguments);
},
[B], function (x) {
return "5: " + this.Print(arguments);
},
[A], function (x) {
return "6: " + this.Print(arguments);
},
[__Object], function (x) {
return "7: " + this.Print(arguments);
}
),
});
var a = new A();
var b = new B();
var c = new C();
var x = new MyClass();
Assert(x.Do() === "1: ");
Assert(x.Do(1, "2", true) === "2: number, string, boolean");
Assert(x.Do(function () { }) === "3: function");
Assert(x.Do(c) === "4: object");
Assert(x.Do(b) === "5: object");
Assert(x.Do(a) === "6: object");
Assert(x.Do({}) === "7: object");
});
</script>
<script>
TestCase("constructor should be called", function () {
var MyClass = Class("MyClass", {
value: Private(null),
Get: Public(function () {
return this.value;
}),
__Constructor: Public.Overload(
[__Number], function () {
this.value = "number";
},
[__String], function () {
this.value = "string";
}
),
});
var x = new MyClass(1);
var y = new MyClass("2");
Assert(x.Get() === "number");
Assert(y.Get() === "string");
});
</script>
<script>
TestCase("constructors in base classes can be called by child class", function () {
var A = Class("A", {
value: Private(null),
GetA: Public(function () {
return this.value;
}),
__Constructor: Public(function (x) {
this.value = x;
})
});
var B = Class("B", {
value: Private(null),
GetB: Public(function () {
return this.value;
}),
__Constructor: Public(function (x) {
this.value = x;
})
});
var C = Class("C", A, B, {
Get: Public(function () {
return this.GetA() + this.GetB();
}),
__Constructor: Public(function (x, y) {
this.__InitBase(A, [x]);
this.__InitBase(B, [y]);
})
})
var c = new C(1, 2);
Assert(c.Get() === 3);
});
</script>
<script>
TestCase("virtual function should be able to override in child classes", function () {
var A = Class("A", {
GetX: Protected.Virtual(function () {
return "X";
}),
GetY: Protected(function () {
return "Y";
}),
GetZ: Public(function () {
return this.GetX() + ", " + this.GetY();
})
});
var B = Class("B", A, {
GetX: Protected.Override(function () {
return "U";
}),
GetY: Protected.New(function () {
return "V";
}),
});
var a = new A();
var b = new B();
Assert(a.GetZ() === "X, Y");
Assert(b.GetZ() === "U, Y");
});
</script>
<script>
TestCase("new function will hide the virtual function in base classes", function () {
var A = Class("A", {
GetX: Protected.Virtual(function () {
return "X";
}),
GetY: Protected.Virtual(function () {
return "Y";
}),
GetZ: Protected.Virtual(function () {
return "Z";
}),
GetA: Public(function () {
return this.GetX() + ", " + this.GetY() + ", " + this.GetZ();
}),
});
var B = Class("B", A, {
GetX: Protected.Override(function () {
return "U";
}),
GetY: Protected.New(function () {
return "V";
}),
GetZ: Protected.NewVirtual(function () {
return "W";
}),
GetB: Public(function () {
return this.GetX() + ", " + this.GetY() + ", " + this.GetZ();
}),
});
var C = Class("C", B, {
GetX: Protected.Override(function () {
return "A";
}),
GetY: Protected.New(function () {
return "B";
}),
GetZ: Protected.Override(function () {
return "C";
}),
GetC: Public(function () {
return this.GetX() + ", " + this.GetY() + ", " + this.GetZ();
}),
});
var a = new A();
var b = new B();
var c = new C();
Assert(a.GetA() === "X, Y, Z");
Assert(b.GetA() === "U, Y, Z");
Assert(b.GetB() === "U, V, W");
Assert(c.GetA() === "A, Y, Z");
Assert(c.GetB() === "A, V, C");
Assert(c.GetC() === "A, B, C");
});
</script>
<script>
TestCase("virtual functions of the same name in different base classes should be able to override in child classes", function () {
var A = Class("A", {
Get: Public.Virtual(function () {
return "A";
}),
GetA: Public(function () {
return this.Get();
}),
});
var B = Class("B", {
Get: Public.Virtual(function () {
return "B";
}),
GetB: Public(function () {
return this.Get();
}),
});
var C = Class("C", A, B, {
Get: Public.Override(function () {
return "C";
})
});
var D = Class("D", C, {
Get: Public.Override(function () {
return "D";
})
});
var a = new A();
var b = new B();
var c = new C();
var d = new D();
Assert(a.GetA() === "A");
Assert(b.GetB() === "B");
Assert(c.GetA() === "C");
Assert(c.GetB() === "C");
Assert(d.GetA() === "D");
Assert(d.GetB() === "D");
});
</script>
<script>
TestCase("different inheriting path to the same virtual base class shares the fields", function () {
var A = Class("A", {
value: Protected(0),
});
var B = Class("B", Virtual(A), {
GetB: Public(function () {
return this.value;
}),
SetB: Public(function (value) {
return this.value = value;
}),
});
var C = Class("C", Virtual(A), {
GetC: Public(function () {
return this.value;
}),
SetC: Public(function (value) {
return this.value = value;
}),
});
var D = Class("D", B, C, {
});
var d = new D();
Assert(d.GetB() === 0);
Assert(d.GetC() === 0);
d.SetB(1);
Assert(d.GetB() === 1);
Assert(d.GetC() === 1);
d.SetC(2);
Assert(d.GetB() === 2);
Assert(d.GetC() === 2);
});
</script>
<script>
TestCase("constructors of virtual base classes can only be called by the final created type if there are multiple inheriting path to the same virtual base class", function () {
var A = Class("A", {
value: Protected(0),
Get: Public(function () {
return this.value;
}),
__Constructor: Public(function (value) {
this.value = value;
}),
});
var B = Class("B", Virtual(A), {
__Constructor: Public(function () {
this.__InitBase(A, [1]);
})
});
var C = Class("C", Virtual(A), {
__Constructor: Public(function () {
this.__InitBase(A, [2]);
})
});
var D = Class("D", B, C, {
__Constructor: Public(function () {
this.__InitBase(B, []);
this.__InitBase(A, [3]);
this.__InitBase(C, []);
})
});
var a = new A(-1);
Assert(a.Get() === -1);
var b = new B();
Assert(b.Get() === 1);
var c = new C();
Assert(c.Get() === 2);
var d = new D();
Assert(d.Get() === 3);
});
</script>
<script>
TestCase("events should be able to attach, detach and execute", function () {
var MyClass = Class("MyClass", {
Event: Public.Event(),
});
var x = new MyClass();
x.Event = undefined;
Assert(x.Event instanceof __Event);
var values = [];
var a = x.Event.Attach(function (v) {
values.push("a:" + v);
});
var b = x.Event.Attach(function (v) {
values.push("b:" + v);
});
Assert(a instanceof __EventHandler);
Assert(b instanceof __EventHandler);
x.Event.Execute(1);
Assert(values.join(", ") === "a:1, b:1");
x.Event.Detach(a);
x.Event.Execute(2);
Assert(values.join(", ") === "a:1, b:1, b:2");
x.Event.Detach(b);
x.Event.Execute(2);
Assert(values.join(", ") === "a:1, b:1, b:2");
});
</script>
<script>
TestCase("properties should be able to read and write if correctly configured", function () {
var MyClass = Class("MyClass", {
a: Private(0),
b: Private(0),
c: Private(0),
d: Private(0),
GetA: Protected(function () { return this.a; }),
GetB: Protected(function () { return this.b; }),
GetC: Protected(function () { return this.c; }),
GetD: Protected(function () { return this.d; }),
SetA: Public(function (value) {
this.a = value;
}),
SetB: Public(function (value) {
if (this.b !== value) {
this.b = value;
this.BChanged.Execute();
}
}),
SetC: Protected(function (value) {
this.c = value;
}),
SetD: Protected(function (value) {
if (this.d !== value) {
this.d = value;
this.DChanged.Execute();
}
}),
BChanged: Public.Event(),
DChanged: Public.Event(),
A: Public.Property({
readonly: true,
}),
B: Public.Property({
readonly: true,
hasEvent: true,
}),
C: Public.Property({
}),
D: Public.Property({
hasEvent: true,
}),
});
var x = new MyClass();
Assert(x.__Type.Description.A.Value.Readonly === true);
Assert(x.__Type.Description.A.Value.HasEvent === false);
Assert(x.__Type.Description.A.Value.GetterName === "GetA");
Assert(x.__Type.Description.A.Value.SetterName === null);
Assert(x.__Type.Description.A.Value.EventName === null);
Assert(x.__Type.Description.B.Value.Readonly === true);
Assert(x.__Type.Description.B.Value.HasEvent === true);
Assert(x.__Type.Description.B.Value.GetterName === "GetB");
Assert(x.__Type.Description.B.Value.SetterName === null);
Assert(x.__Type.Description.B.Value.EventName === "BChanged");
Assert(x.__Type.Description.C.Value.Readonly === false);
Assert(x.__Type.Description.C.Value.HasEvent === false);
Assert(x.__Type.Description.C.Value.GetterName === "GetC");
Assert(x.__Type.Description.C.Value.SetterName === "SetC");
Assert(x.__Type.Description.C.Value.EventName === null);
Assert(x.__Type.Description.D.Value.Readonly === false);
Assert(x.__Type.Description.D.Value.HasEvent === true);
Assert(x.__Type.Description.D.Value.GetterName === "GetD");
Assert(x.__Type.Description.D.Value.SetterName === "SetD");
Assert(x.__Type.Description.D.Value.EventName === "DChanged");
var values = [];
x.BChanged.Attach(function () {
values.push("B");
});
x.DChanged.Attach(function () {
values.push("D");
});
Assert(x.A === 0);
Assert(x.B === 0);
Assert(x.C === 0);
Assert(x.D === 0);
x.SetA(1);
x.SetB(2);
x.C = 3;
x.D = 4;
Assert(x.A === 1);
Assert(x.B === 2);
Assert(x.C === 3);
Assert(x.D === 4);
Assert(values.join(", ") === "B, D");
});
</script>
<script>
TestCase("hidden members should be able to call inside or outside classes", function () {
var A = Class("A", {
GetX: Public(function () {
return "X";
}),
GetY: Public.Virtual(function () {
return "Y";
}),
});
var B = Class("B", A, {
GetX: Public.New(function () {
return "A";
}),
});
var C = Class("C", B, {
GetY: Public.Override(function () {
return "B";
}),
Get1: Public(function () {
return this.GetX() + ", " + this.GetY();
}),
Get2: Public(function () {
var s = this.__Dynamic(A);
return s.GetX() + ", " + s.GetY();
}),
Get3: Public(function () {
var s = this.__Dynamic(B);
return s.GetX() + ", " + s.GetY();
}),
Get4: Public(function () {
var s = this.__Static(A);
return s.GetX() + ", " + s.GetY();
}),
Get5: Public(function () {
var s = this.__Static(B);
return s.GetX() + ", " + s.GetY();
}),
});
var c = new C();
Assert(c.Get1() === "A, B");
Assert(c.Get2() === "X, B");
Assert(c.Get3() === "A, B");
Assert(c.Get4() === "X, Y");
Assert(c.Get5() === "A, Y");
var da = c.__Dynamic(A);
Assert(da.GetX() === "X");
Assert(da.GetY() === "B");
var db = c.__Dynamic(B);
Assert(db.GetX() === "A");
Assert(db.GetY() === "B");
var sa = c.__Static(A);
Assert(sa.GetX() === "X");
Assert(sa.GetY() === "Y");
var sb = c.__Static(B);
Assert(sb.GetX() === "A");
Assert(sb.GetY() === "Y");
});
</script>
<script>
TestCase("cannot non-virtually inherit a class multiple times", function () {
try {
var A = Class("A", {});
var B = Class("B", A, {});
var C = Class("C", A, {});
var D = Class("D", B, C, {});
Assert(false);
}
catch (ex) {
Assert(ex.message === "Type \"D\" cannot non-virtually inherit from type \"A\" multiple times.");
}
});
</script>
<script>
TestCase("cannot inherit multiple members of the same name without defining a new one", function () {
try {
var A = Class("A", {
Get: Public(function () {
})
});
var B = Class("B", {
Get: Public(function () {
})
});
var C = Class("C", A, B, {});
Assert(false);
}
catch (ex) {
Assert(ex.message === "Type \"C\" cannot inherit multiple members of the same name \"Get\" without defining a new one.");
}
try {
var A = Class("A", {
Get: Protected(function () {
})
});
var B = Class("B", {
Get: Protected(function () {
})
});
var C = Class("C", A, B, {});
}
catch (ex) {
Assert(ex.message === "Type \"C\" cannot inherit multiple members of the same name \"Get\" without defining a new one.");
}
var A = Class("A", {
Get: Private(function () {
})
});
var B = Class("B", {
Get: Private(function () {
})
});
var C = Class("C", A, B, {});
});
</script>
<script>
TestCase("cannot override non-virtual functions", function () {
try {
var A = Class("A", {
});
var B = Class("B", A, {
Get: Public.Override(function () { })
});
Assert(false);
}
catch (ex) {
Assert(ex.message === "Type \"B\" cannot find virtual function \"Get\" to override.");
}
try {
var A = Class("A", {
Get: Public(function () { })
});
var B = Class("B", A, {
Get: Public.Override(function () { })
});
Assert(false);
}
catch (ex) {
Assert(ex.message === "Type \"B\" cannot override non-virtual function \"Get\".");
}
try {
var A = Class("A", {
Get: Public.Virtual(function () { })
});
var B = Class("B", A, {
Get: Public.New(function () { })
});
var C = Class("C", B, {
Get: Public.Override(function () { })
});
Assert(false);
}
catch (ex) {
Assert(ex.message === "Type \"C\" cannot override non-virtual function \"Get\".");
}
});
</script>
<script>
TestCase("cannot hide a virtual function without overriding", function () {
try {
var A = Class("A", {
Get: Public.Virtual(function () { })
});
var B = Class("B", A, {
Get: Public(function () { })
});
Assert(false);
}
catch (ex) {
Assert(ex.message === "Type \"B\" cannot hide virtual function \"Get\" without overriding.");
}
try {
var A = Class("A", {
Get: Public(function () { })
});
var B = Class("B", A, {
Get: Public.NewVirtual(function () { })
});
var C = Class("C", B, {
Get: Public(function () { })
});
}
catch (ex) {
Assert(ex.message === "Type \"C\" cannot hide virtual function \"Get\" without overriding.");
}
});
</script>
<script>
TestCase("cannot hide events", function () {
try {
var A = Class("A", {
Event: Public.Event(),
});
var B = Class("B", A, {
Event: Public.Event(),
});
Assert(false);
}
catch (ex) {
Assert(ex.message === "Type \"B\" cannot hide event \"Event\".");
}
try {
var A = Class("A", {
Event: Public.Event(),
});
var B = Class("B", A, {
Event: Public(0),
});
Assert(false);