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Add tests

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This commit is contained in:
Anders Hejlsberg 2017-01-12 10:49:58 -08:00
parent bf7258742e
commit dafea7f54d
1 changed files with 63 additions and 1 deletions
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64
tests/cases/conformance/types/mapped/mappedTypeRelationships.ts
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@ -105,4 +105,66 @@ function f50<T extends ItemMap>(obj: T, key: keyof T) {
function f51<T extends ItemMap, K extends keyof T>(obj: T, key: K) {
let item: Item = obj[key];
return obj[key].name;
}
}
type T1<T> = {
[P in keyof T]: T[P];
}
type T2<T> = {
[P in keyof T]: T[P];
}
function f60<U>(x: T1<U>, y: T2<U>) {
x = y;
y = x;
}
type Identity<T> = {
[P in keyof T]: T[P];
}
function f61<U>(x: Identity<U>, y: Partial<U>) {
x = y; // Error
y = x;
}
function f62<U>(x: Identity<U>, y: Readonly<U>) {
x = y;
y = x;
}
function f70<T>(x: { [P in keyof T]: T[P] }, y: { [P in keyof T]: T[P] }) {
x = y;
y = x;
}
function f71<T, U extends T>(x: { [P in keyof T]: T[P] }, y: { [P in keyof T]: U[P] }) {
x = y;
y = x; // Error
}
function f72<T, U extends T>(x: { [P in keyof T]: T[P] }, y: { [P in keyof U]: U[P] }) {
x = y;
y = x; // Error
}
function f73<T, K extends keyof T>(x: { [P in K]: T[P] }, y: { [P in keyof T]: T[P] }) {
x = y;
y = x; // Error
}
function f74<T, U extends T, K extends keyof T>(x: { [P in K]: T[P] }, y: { [P in keyof U]: U[P] }) {
x = y;
y = x; // Error
}
function f75<T, U extends T, K extends keyof T>(x: { [P in K]: T[P] }, y: { [P in keyof T]: U[P] }) {
x = y;
y = x; // Error
}
function f76<T, U extends T, K extends keyof T>(x: { [P in K]: T[P] }, y: { [P in K]: U[P] }) {
x = y;
y = x; // Error
}