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classes.spec.ts
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801 lines (727 loc) · 18.9 KB
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import * as util from "../../util";
test("ClassFieldInitializer", () => {
util.testFunction`
class a {
field: number = 4;
}
return new a().field;
`.expectToMatchJsResult();
});
test("ClassNumericLiteralFieldInitializer", () => {
util.testFunction`
class a {
1: number = 4;
}
return new a()[1];
`.expectToMatchJsResult();
});
test("ClassStringLiteralFieldInitializer", () => {
util.testFunction`
class a {
"field": number = 4;
}
return new a()["field"];
`.expectToMatchJsResult();
});
test("ClassComputedFieldInitializer", () => {
util.testFunction`
const field: "field" = "field";
class a {
[field]: number = 4;
}
return new a()[field];
`.expectToMatchJsResult();
});
test("ClassConstructor", () => {
util.testFunction`
class a {
field: number = 3;
constructor(n: number) {
this.field = n * 2;
}
}
return new a(4).field;
`.expectToMatchJsResult();
});
test("ClassConstructorAssignment", () => {
util.testFunction`
class a { constructor(public field: number) {} }
return new a(4).field;
`.expectToMatchJsResult();
});
test("ClassConstructorDefaultParameter", () => {
util.testFunction`
class a { public field: number; constructor(f: number = 3) { this.field = f; } }
return new a().field;
`.expectToMatchJsResult();
});
test("ClassConstructorAssignmentDefault", () => {
util.testFunction`
class a { constructor(public field: number = 3) { } }
return new a().field;
`.expectToMatchJsResult();
});
test("ClassConstructorPropertyInitiailizationOrder", () => {
util.testFunction`
class Test {
public foo = this.bar;
constructor(public bar: string) {}
}
return (new Test("baz")).foo;
`.expectToMatchJsResult();
});
test("ClassConstructorPropertyInitiailizationFalsey", () => {
util.testFunction`
class Test {
constructor(public foo = true) {}
}
return (new Test(false)).foo;
`.expectToMatchJsResult();
});
test("ClassNewNoBrackets", () => {
util.testFunction`
class a {
public field: number = 4;
constructor() {}
}
let inst = new a;
return inst.field;
`.expectToMatchJsResult();
});
test("ClassStaticFields", () => {
util.testFunction`
class a { static field: number = 4; }
return a.field;
`.expectToMatchJsResult();
});
test("ClassStaticNumericLiteralFields", () => {
util.testFunction`
class a { static 1: number = 4; }
return a[1];
`.expectToMatchJsResult();
});
test("ClassStaticStringLiteralFields", () => {
util.testFunction`
class a { static "field": number = 4; }
return a["field"];
`.expectToMatchJsResult();
});
test("ClassStaticComputedFields", () => {
util.testFunction`
const field: "field" = "field";
class a { static [field]: number = 4; }
return a[field];
`.expectToMatchJsResult();
});
test("classExtends", () => {
util.testFunction`
class a { field: number = 4; }
class b extends a {}
return new b().field;
`.expectToMatchJsResult();
});
test("SubclassDefaultConstructor", () => {
util.testFunction`
class a {
field: number;
constructor(field: number) {
this.field = field;
}
}
class b extends a {}
return new b(10).field;
`.expectToMatchJsResult();
});
test("SubsubclassDefaultConstructor", () => {
util.testFunction`
class a {
field: number;
constructor(field: number) {
this.field = field;
}
}
class b extends a {}
class c extends b {}
return new c(10).field;
`.expectToMatchJsResult();
});
test("SubclassConstructor", () => {
util.testFunction`
class a {
field: number;
constructor(field: number) {
this.field = field;
}
}
class b extends a {
constructor(field: number) {
super(field + 1);
}
}
return new b(10).field;
`.expectToMatchJsResult();
});
test("Subclass constructor across merged namespace", () => {
util.testModule`
namespace NS {
export class Super {
prop: string;
constructor() {
this.prop = "foo";
}
}
}
namespace NS {
export class Sub extends Super {
constructor() {
super();
}
}
}
export const result = (new NS.Sub()).prop;
`
.setReturnExport("result")
.expectToMatchJsResult();
});
test("super without class", () => {
util.testExpression`super()`.expectDiagnosticsToMatchSnapshot([2337]);
});
test("super in unnamed class", () => {
util.testFunction`
class Foo {
public x = true;
}
const Bar = (class extends (Foo) {
constructor() {
super();
}
});
return new Bar().x;
`.expectToMatchJsResult();
});
test("classSuper", () => {
util.testFunction`
class a {
public field: number = 4;
constructor(n: number) {
this.field = n;
}
}
class b extends a {
constructor() {
super(5);
}
}
return new b().field;
`.expectToMatchJsResult();
});
test("classSuperSuper", () => {
util.testFunction`
class a {
public field: number = 4;
constructor(n: number) {
this.field = n;
}
}
class b extends a {
constructor(n: number) {
super(n * 2);
}
}
class c extends b {
constructor() {
super(5);
}
}
return new c().field;
`.expectToMatchJsResult();
});
test("classSuperSkip", () => {
util.testFunction`
class a {
public field: number = 4;
constructor(n: number) {
this.field = n;
}
}
class b extends a {
}
class c extends b {
constructor() {
super(5);
}
}
return new c().field;
`.expectToMatchJsResult();
});
test("renamedClassExtends", () => {
util.testModule`
namespace Classes {
export class Base {
public value: number;
constructor(){ this.value = 3; }
}
}
const A = Classes.Base;
class B extends A {
constructor(){ super(); }
}
const b = new B();
export const result = b.value;
`
.setReturnExport("result")
.expectToMatchJsResult();
});
test("ClassMethodCall", () => {
util.testFunction`
class a {
public method(): number {
return 4;
}
}
let inst = new a();
return inst.method();
`.expectToMatchJsResult();
});
test("ClassNumericLiteralMethodCall", () => {
util.testFunction`
class a {
public 1(): number {
return 4;
}
}
let inst = new a();
return inst[1]();
`.expectToMatchJsResult();
});
test("ClassStringLiteralMethodCall", () => {
util.testFunction`
class a {
public "method"(): number {
return 4;
}
}
let inst = new a();
return inst["method"]();
`.expectToMatchJsResult();
});
test("ClassComputedMethodCall", () => {
util.testFunction`
const method: "method" = "method";
class a {
public [method](): number {
return 4;
}
}
let inst = new a();
return inst[method]();
`.expectToMatchJsResult();
});
test("CastClassMethodCall", () => {
util.testFunction`
interface result
{
val : number;
}
class a {
public method(out: result) {
out.val += 2;
}
}
let inst:any = new a();
let result = {val : 0};
(inst as a).method(result);
(inst as a).method(result);
return result.val;
`.expectToMatchJsResult();
});
test("ClassPropertyFunctionThis", () => {
util.testFunction`
class a {
constructor(private n: number) {}
public method: () => number = () => this.n;
}
let inst = new a(4);
return inst.method();
`.expectToMatchJsResult();
});
test("ClassInheritedMethodCall", () => {
util.testFunction`
class a {
public method(): number {
return 4;
}
}
class b extends a {}
let inst = new b();
return inst.method();
`.expectToMatchJsResult();
});
test("ClassDoubleInheritedMethodCall", () => {
util.testFunction`
class a {
public method(): number {
return 4;
}
}
class b extends a {}
class c extends b {}
let inst = new c();
return inst.method();
`.expectToMatchJsResult();
});
test("ClassInheritedMethodCall2", () => {
util.testFunction`
class a {}
class b extends a {
public method(): number {
return 4;
}
}
class c extends b {}
let inst = new c();
return inst.method();
`.expectToMatchJsResult();
});
test("ClassMethodOverride", () => {
util.testFunction`
class a {
public method(): number {
return 2;
}
}
class b extends a {
public method(): number {
return 4;
}
}
let inst = new b();
return inst.method();
`.expectToMatchJsResult();
});
test("methodDefaultParameters", () => {
util.testFunction`
class a {
public method(b: number, c: number = 5): number {
return b + c;
}
}
let inst = new a();
return inst.method(4);
`.expectToMatchJsResult();
});
test("CallSuperMethodNoArgs", () => {
util.testFunction`
class a {
a: number
constructor(n: number) {
this.a = n;
}
public method() {
return this.a;
}
}
class b extends a {
constructor(n: number) {
super(n);
}
public method() {
return super.method();
}
}
let inst = new b(6);
return inst.method();
`.expectToMatchJsResult();
});
test("CallSuperMethodArgs", () => {
util.testFunction`
class a {
a: number
constructor(n: number) {
this.a = n;
}
public method(n: number) {
return this.a + n;
}
}
class b extends a {
constructor(n: number) {
super(n);
}
public method(n: number) {
return super.method(n);
}
}
let inst = new b(6);
return inst.method(4);
`.expectToMatchJsResult();
});
test("CallSuperExpressionMethod", () => {
util.testFunction`
let i = 0;
function make() {
const j = i++;
return class {
constructor() {}
method() {}
};
}
class B extends make() {
constructor() { super(); }
method() { super.method(); }
}
const inst = new B();
inst.method();
inst.method();
inst.method();
return i;
`.expectToMatchJsResult();
});
test("CallSuperSuperMethod", () => {
util.testFunction`
class a {
a: number
constructor(n: number) {
this.a = n;
}
public method() {
return this.a;
}
}
class b extends a {
constructor(n: number) {
super(n);
}
public method() {
return super.method();
}
}
class c extends b {
constructor(n: number) {
super(n);
}
public method() {
return super.method();
}
}
let inst = new c(6);
return inst.method();
`.expectToMatchJsResult();
});
test("classExpression", () => {
util.testFunction`
class a {
public method() {
return "instance of a";
}
}
const b = class extends a {
public method() {
return "instance of b";
}
}
let inst = new b();
return inst.method();
`.expectToMatchJsResult();
});
test("Named Class Expression", () => {
util.testFunction`
const a = class MyClass {
public method() {
return "foo";
}
}
let inst = new a();
return inst.method();
`.expectToMatchJsResult();
});
test("classExpressionBaseClassMethod", () => {
util.testFunction`
class a {
public method() {
return 42;
}
}
const b = class extends a {
}
let inst = new b();
return inst.method();
`.expectToMatchJsResult();
});
test("Class Method Runtime Override", () => {
util.testFunction`
class MyClass {
method(): number {
return 4;
}
}
let inst = new MyClass();
inst.method = () => {
return 8;
}
return inst.method();
`.expectToMatchJsResult();
});
test("Exported class super call", () => {
util.testModule`
export class Foo {
prop: string;
constructor(prop: string) { this.prop = prop; }
}
export class Bar extends Foo {
constructor() {
super("bar");
}
}
export const result = (new Bar()).prop;
`
.setReturnExport("result")
.expectToMatchJsResult();
});
test.each(["(new Foo())", "Foo"])("Class method name collision (%p)", input => {
util.testFunction`
class Foo {
public method() { return "foo"; }
public static method() { return "bar"; }
}
return ${input}.method();
`.expectToMatchJsResult();
});
test("Class static instance of self", () => {
util.testFunction`
class Foo {
bar = "foobar";
static instance = new Foo();
}
return Foo.instance.bar;
`.expectToMatchJsResult();
});
test("Class name", () => {
util.testFunction`
class Foo {}
return Foo.name;
`.expectToMatchJsResult();
});
test("Class name via constructor", () => {
util.testFunction`
class Foo {}
const foo = new Foo();
return foo.constructor.name;
`.expectToMatchJsResult();
});
test("Class expression name", () => {
util.testFunction`
const foo = class Foo {};
return foo.name;
`.expectToMatchJsResult();
});
test("Class expression name via constructor", () => {
util.testFunction`
const foo = class Foo {};
const bar = new foo();
return bar.constructor.name;
`.expectToMatchJsResult();
});
test("Anonymous class in variable declaration has name", () => {
util.testFunction`
const foo = class {};
const bar = foo;
return { a: foo.name, b: bar.name };
`.expectToMatchJsResult();
});
test("Anonymous class expression outside variable assignment", () => {
util.testExpression`(class {}).name`.expectToMatchJsResult();
});
test("Class anonymous expression name via constructor", () => {
util.testFunction`
const foo = class {};
const bar = new foo();
return bar.constructor.name;
`.expectToMatchJsResult();
});
test("Class field override in subclass", () => {
util.testFunction`
class Foo {
field = "foo";
}
class Bar extends Foo {
field = "bar";
}
return (new Foo()).field + (new Bar()).field;
`.expectToMatchJsResult();
});
test("Class field override in subclass with constructors", () => {
util.testFunction`
class Foo {
field = "foo";
constructor() {}
}
class Bar extends Foo {
field = "bar";
constructor() { super(); }
}
return (new Foo()).field + (new Bar()).field;
`.expectToMatchJsResult();
});
test("missing declaration name", () => {
util.testModule`
class {}
`.expectDiagnosticsToMatchSnapshot([1211]);
});
test("default exported name class has correct name property", () => {
util.testModule`
export default class Test { static method() { return true; } }
`
.setReturnExport("default", "name")
.expectToMatchJsResult();
});
test("default exported anonymous class has 'default' name property", () => {
util.testModule`
export default class { static method() { return true; } }
`
.setReturnExport("default", "name")
.expectToEqual("default");
});
// https://github.com/TypeScriptToLua/TypeScriptToLua/issues/584
test("constructor class name available with constructor", () => {
util.testModule`
const decorator = <T extends new (...args: any[]) => any>(constructor: T) => class extends constructor {};
@decorator
class MyClass {}
export const className = new MyClass().constructor.name;
`
.setReturnExport("className")
.expectToEqual("MyClass");
});
// https://github.com/TypeScriptToLua/TypeScriptToLua/issues/959
test("methods accessed via this index pass correct context", () => {
util.testModule`
class Example {
baz = 3;
foo() {
this["bar"]()
}
bar() {
return this.baz;
}
}
const inst = new Example();
export const result = inst.foo();
`.expectToMatchJsResult();
});
// https://github.com/TypeScriptToLua/TypeScriptToLua/issues/959
test.each(['(this["bar"])', '((((this["bar"]))))'])("methods in parentheses pass correct context %s", callPath => {
util.testModule`
class Example {
baz = 3;
foo() {
${callPath}()
}
bar() {
return this.baz;
}
}
const inst = new Example();
export const result = inst.foo();
`.expectToMatchJsResult();
});