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Add tests

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This commit is contained in:
Anders Hejlsberg
2021-05-22 18:04:20 -07:00
parent 4475012558
commit 86f09ae87c
4 changed files with 163 additions and 0 deletions
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tests/baselines/reference/nonNullableReduction.js
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//// [nonNullableReduction.ts]
// Repros from #43425
type Transform1<T> = ((value: string) => T) | (string extends T ? undefined : never);
type Transform2<T> = string extends T ? ((value: string) => T) | undefined : (value: string) => T;
function test<T>(f1: Transform1<T>, f2: Transform2<T>) {
f1?.("hello");
f2?.("hello");
}
function f1<T>(x: T | (string extends T ? null | undefined : never)) {
let z = x!; // NonNullable<T>
}
function f2<T, U extends null | undefined>(x: T | U) {
let z = x!; // NonNullable<T>
}
//// [nonNullableReduction.js]
"use strict";
// Repros from #43425
function test(f1, f2) {
f1 === null || f1 === void 0 ? void 0 : f1("hello");
f2 === null || f2 === void 0 ? void 0 : f2("hello");
}
function f1(x) {
var z = x; // NonNullable<T>
}
function f2(x) {
var z = x; // NonNullable<T>
}
tests/baselines/reference/nonNullableReduction.symbols
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=== tests/cases/compiler/nonNullableReduction.ts ===
// Repros from #43425
type Transform1<T> = ((value: string) => T) | (string extends T ? undefined : never);
>Transform1 : Symbol(Transform1, Decl(nonNullableReduction.ts, 0, 0))
>T : Symbol(T, Decl(nonNullableReduction.ts, 2, 16))
>value : Symbol(value, Decl(nonNullableReduction.ts, 2, 23))
>T : Symbol(T, Decl(nonNullableReduction.ts, 2, 16))
>T : Symbol(T, Decl(nonNullableReduction.ts, 2, 16))
type Transform2<T> = string extends T ? ((value: string) => T) | undefined : (value: string) => T;
>Transform2 : Symbol(Transform2, Decl(nonNullableReduction.ts, 2, 85))
>T : Symbol(T, Decl(nonNullableReduction.ts, 3, 16))
>T : Symbol(T, Decl(nonNullableReduction.ts, 3, 16))
>value : Symbol(value, Decl(nonNullableReduction.ts, 3, 42))
>T : Symbol(T, Decl(nonNullableReduction.ts, 3, 16))
>value : Symbol(value, Decl(nonNullableReduction.ts, 3, 78))
>T : Symbol(T, Decl(nonNullableReduction.ts, 3, 16))
function test<T>(f1: Transform1<T>, f2: Transform2<T>) {
>test : Symbol(test, Decl(nonNullableReduction.ts, 3, 98))
>T : Symbol(T, Decl(nonNullableReduction.ts, 5, 14))
>f1 : Symbol(f1, Decl(nonNullableReduction.ts, 5, 17))
>Transform1 : Symbol(Transform1, Decl(nonNullableReduction.ts, 0, 0))
>T : Symbol(T, Decl(nonNullableReduction.ts, 5, 14))
>f2 : Symbol(f2, Decl(nonNullableReduction.ts, 5, 35))
>Transform2 : Symbol(Transform2, Decl(nonNullableReduction.ts, 2, 85))
>T : Symbol(T, Decl(nonNullableReduction.ts, 5, 14))
f1?.("hello");
>f1 : Symbol(f1, Decl(nonNullableReduction.ts, 5, 17))
f2?.("hello");
>f2 : Symbol(f2, Decl(nonNullableReduction.ts, 5, 35))
}
function f1<T>(x: T | (string extends T ? null | undefined : never)) {
>f1 : Symbol(f1, Decl(nonNullableReduction.ts, 8, 1))
>T : Symbol(T, Decl(nonNullableReduction.ts, 10, 12))
>x : Symbol(x, Decl(nonNullableReduction.ts, 10, 15))
>T : Symbol(T, Decl(nonNullableReduction.ts, 10, 12))
>T : Symbol(T, Decl(nonNullableReduction.ts, 10, 12))
let z = x!; // NonNullable<T>
>z : Symbol(z, Decl(nonNullableReduction.ts, 11, 7))
>x : Symbol(x, Decl(nonNullableReduction.ts, 10, 15))
}
function f2<T, U extends null | undefined>(x: T | U) {
>f2 : Symbol(f2, Decl(nonNullableReduction.ts, 12, 1))
>T : Symbol(T, Decl(nonNullableReduction.ts, 14, 12))
>U : Symbol(U, Decl(nonNullableReduction.ts, 14, 14))
>x : Symbol(x, Decl(nonNullableReduction.ts, 14, 43))
>T : Symbol(T, Decl(nonNullableReduction.ts, 14, 12))
>U : Symbol(U, Decl(nonNullableReduction.ts, 14, 14))
let z = x!; // NonNullable<T>
>z : Symbol(z, Decl(nonNullableReduction.ts, 15, 7))
>x : Symbol(x, Decl(nonNullableReduction.ts, 14, 43))
}
tests/baselines/reference/nonNullableReduction.types
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=== tests/cases/compiler/nonNullableReduction.ts ===
// Repros from #43425
type Transform1<T> = ((value: string) => T) | (string extends T ? undefined : never);
>Transform1 : Transform1<T>
>value : string
type Transform2<T> = string extends T ? ((value: string) => T) | undefined : (value: string) => T;
>Transform2 : Transform2<T>
>value : string
>value : string
function test<T>(f1: Transform1<T>, f2: Transform2<T>) {
>test : <T>(f1: Transform1<T>, f2: Transform2<T>) => void
>f1 : Transform1<T>
>f2 : Transform2<T>
f1?.("hello");
>f1?.("hello") : T | undefined
>f1 : Transform1<T>
>"hello" : "hello"
f2?.("hello");
>f2?.("hello") : T | undefined
>f2 : ((value: string) => T) | ((value: string) => T) | undefined
>"hello" : "hello"
}
function f1<T>(x: T | (string extends T ? null | undefined : never)) {
>f1 : <T>(x: T | (string extends T ? null | undefined : never)) => void
>x : T | (string extends T ? null | undefined : never)
>null : null
let z = x!; // NonNullable<T>
>z : NonNullable<T>
>x! : NonNullable<T>
>x : T | (string extends T ? null | undefined : never)
}
function f2<T, U extends null | undefined>(x: T | U) {
>f2 : <T, U extends null | undefined>(x: T | U) => void
>null : null
>x : T | U
let z = x!; // NonNullable<T>
>z : NonNullable<T>
>x! : NonNullable<T>
>x : T | U
}
tests/cases/compiler/nonNullableReduction.ts
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// @strict: true
// Repros from #43425
type Transform1<T> = ((value: string) => T) | (string extends T ? undefined : never);
type Transform2<T> = string extends T ? ((value: string) => T) | undefined : (value: string) => T;
function test<T>(f1: Transform1<T>, f2: Transform2<T>) {
f1?.("hello");
f2?.("hello");
}
function f1<T>(x: T | (string extends T ? null | undefined : never)) {
let z = x!; // NonNullable<T>
}
function f2<T, U extends null | undefined>(x: T | U) {
let z = x!; // NonNullable<T>
}