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Add regression tests
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ahejlsberg committed Mar 23, 2022
1 parent 8d62e26 commit 08526c0
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55 changes: 55 additions & 0 deletions tests/baselines/reference/contextuallyTypedBooleanLiterals.js
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//// [contextuallyTypedBooleanLiterals.ts]
// Repro from #48363

type Box<T> = {
get: () => T,
set: (value: T) => void
}

declare function box<T>(value: T): Box<T>;

const bn1 = box(0); // Box<number>
const bn2: Box<number> = box(0); // Ok

const bb1 = box(false); // Box<boolean>
const bb2: Box<boolean> = box(false); // Error, box<false> not assignable to Box<boolean>

// Repro from #48150

interface Observable<T>
{
(): T;
(value: T): any;
}

declare function observable<T>(value: T): Observable<T>;

const x: Observable<boolean> = observable(false);


//// [contextuallyTypedBooleanLiterals.js]
"use strict";
// Repro from #48363
var bn1 = box(0); // Box<number>
var bn2 = box(0); // Ok
var bb1 = box(false); // Box<boolean>
var bb2 = box(false); // Error, box<false> not assignable to Box<boolean>
var x = observable(false);


//// [contextuallyTypedBooleanLiterals.d.ts]
declare type Box<T> = {
get: () => T;
set: (value: T) => void;
};
declare function box<T>(value: T): Box<T>;
declare const bn1: Box<number>;
declare const bn2: Box<number>;
declare const bb1: Box<boolean>;
declare const bb2: Box<boolean>;
interface Observable<T> {
(): T;
(value: T): any;
}
declare function observable<T>(value: T): Observable<T>;
declare const x: Observable<boolean>;
70 changes: 70 additions & 0 deletions tests/baselines/reference/contextuallyTypedBooleanLiterals.symbols
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=== tests/cases/compiler/contextuallyTypedBooleanLiterals.ts ===
// Repro from #48363

type Box<T> = {
>Box : Symbol(Box, Decl(contextuallyTypedBooleanLiterals.ts, 0, 0))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 2, 9))

get: () => T,
>get : Symbol(get, Decl(contextuallyTypedBooleanLiterals.ts, 2, 15))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 2, 9))

set: (value: T) => void
>set : Symbol(set, Decl(contextuallyTypedBooleanLiterals.ts, 3, 17))
>value : Symbol(value, Decl(contextuallyTypedBooleanLiterals.ts, 4, 10))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 2, 9))
}

declare function box<T>(value: T): Box<T>;
>box : Symbol(box, Decl(contextuallyTypedBooleanLiterals.ts, 5, 1))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 7, 21))
>value : Symbol(value, Decl(contextuallyTypedBooleanLiterals.ts, 7, 24))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 7, 21))
>Box : Symbol(Box, Decl(contextuallyTypedBooleanLiterals.ts, 0, 0))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 7, 21))

const bn1 = box(0); // Box<number>
>bn1 : Symbol(bn1, Decl(contextuallyTypedBooleanLiterals.ts, 9, 5))
>box : Symbol(box, Decl(contextuallyTypedBooleanLiterals.ts, 5, 1))

const bn2: Box<number> = box(0); // Ok
>bn2 : Symbol(bn2, Decl(contextuallyTypedBooleanLiterals.ts, 10, 5))
>Box : Symbol(Box, Decl(contextuallyTypedBooleanLiterals.ts, 0, 0))
>box : Symbol(box, Decl(contextuallyTypedBooleanLiterals.ts, 5, 1))

const bb1 = box(false); // Box<boolean>
>bb1 : Symbol(bb1, Decl(contextuallyTypedBooleanLiterals.ts, 12, 5))
>box : Symbol(box, Decl(contextuallyTypedBooleanLiterals.ts, 5, 1))

const bb2: Box<boolean> = box(false); // Error, box<false> not assignable to Box<boolean>
>bb2 : Symbol(bb2, Decl(contextuallyTypedBooleanLiterals.ts, 13, 5))
>Box : Symbol(Box, Decl(contextuallyTypedBooleanLiterals.ts, 0, 0))
>box : Symbol(box, Decl(contextuallyTypedBooleanLiterals.ts, 5, 1))

// Repro from #48150

interface Observable<T>
>Observable : Symbol(Observable, Decl(contextuallyTypedBooleanLiterals.ts, 13, 37))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 17, 21))
{
(): T;
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 17, 21))

(value: T): any;
>value : Symbol(value, Decl(contextuallyTypedBooleanLiterals.ts, 20, 3))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 17, 21))
}

declare function observable<T>(value: T): Observable<T>;
>observable : Symbol(observable, Decl(contextuallyTypedBooleanLiterals.ts, 21, 1))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 23, 28))
>value : Symbol(value, Decl(contextuallyTypedBooleanLiterals.ts, 23, 31))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 23, 28))
>Observable : Symbol(Observable, Decl(contextuallyTypedBooleanLiterals.ts, 13, 37))
>T : Symbol(T, Decl(contextuallyTypedBooleanLiterals.ts, 23, 28))

const x: Observable<boolean> = observable(false);
>x : Symbol(x, Decl(contextuallyTypedBooleanLiterals.ts, 25, 5))
>Observable : Symbol(Observable, Decl(contextuallyTypedBooleanLiterals.ts, 13, 37))
>observable : Symbol(observable, Decl(contextuallyTypedBooleanLiterals.ts, 21, 1))

61 changes: 61 additions & 0 deletions tests/baselines/reference/contextuallyTypedBooleanLiterals.types
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=== tests/cases/compiler/contextuallyTypedBooleanLiterals.ts ===
// Repro from #48363

type Box<T> = {
>Box : Box<T>

get: () => T,
>get : () => T

set: (value: T) => void
>set : (value: T) => void
>value : T
}

declare function box<T>(value: T): Box<T>;
>box : <T>(value: T) => Box<T>
>value : T

const bn1 = box(0); // Box<number>
>bn1 : Box<number>
>box(0) : Box<number>
>box : <T>(value: T) => Box<T>
>0 : 0

const bn2: Box<number> = box(0); // Ok
>bn2 : Box<number>
>box(0) : Box<number>
>box : <T>(value: T) => Box<T>
>0 : 0

const bb1 = box(false); // Box<boolean>
>bb1 : Box<boolean>
>box(false) : Box<boolean>
>box : <T>(value: T) => Box<T>
>false : false

const bb2: Box<boolean> = box(false); // Error, box<false> not assignable to Box<boolean>
>bb2 : Box<boolean>
>box(false) : Box<boolean>
>box : <T>(value: T) => Box<T>
>false : false

// Repro from #48150

interface Observable<T>
{
(): T;
(value: T): any;
>value : T
}

declare function observable<T>(value: T): Observable<T>;
>observable : <T>(value: T) => Observable<T>
>value : T

const x: Observable<boolean> = observable(false);
>x : Observable<boolean>
>observable(false) : Observable<boolean>
>observable : <T>(value: T) => Observable<T>
>false : false

32 changes: 32 additions & 0 deletions tests/cases/compiler/contextuallyTypedBooleanLiterals.ts
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// @strict: true
// @declaration: true

// @strict: true
// @declaration: true

// Repro from #48363

type Box<T> = {
get: () => T,
set: (value: T) => void
}

declare function box<T>(value: T): Box<T>;

const bn1 = box(0); // Box<number>
const bn2: Box<number> = box(0); // Ok

const bb1 = box(false); // Box<boolean>
const bb2: Box<boolean> = box(false); // Error, box<false> not assignable to Box<boolean>

// Repro from #48150

interface Observable<T>
{
(): T;
(value: T): any;
}

declare function observable<T>(value: T): Observable<T>;

const x: Observable<boolean> = observable(false);

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