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test(dtslint): add mergeMapTo #4097

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merged 2 commits into from
Sep 11, 2018
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test(dtslint): add mergeMapTo #4097

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test(dtslint): add mergeMapTo
timdeschryver Sep 5, 2018
6b0abb8
test(dtslint): add extra checks to mergeMapTo
timdeschryver Sep 5, 2018
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test(dtslint): add extra checks to mergeMapTo
@timdeschryver
timdeschryver committed Sep 5, 2018
commit 6b0abb822108ce5780d13b7f1d57c44a8f394846
9 changes: 9 additions & 0 deletions spec-dtslint/operators/mergeMapTo-spec.ts
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Original file line number Diff line number Diff line change
@@ -9,6 +9,14 @@ it('should infer correctly multiple types', () => {
const o = of(1, 2, 3).pipe(mergeMapTo(of('foo', 4))); // $ExpectType Observable<string | number>
});

it('should infer correctly with an array', () => {
const o = of(1, 2, 3).pipe(mergeMapTo([4, 5, 6])); // $ExpectType Observable<number>
});

it('should infer correctly with a Promise', () => {
const o = of(1, 2, 3).pipe(mergeMapTo(new Promise<string>(() => {}))); // $ExpectType Observable<string>
});

it('should support a concurrent parameter', () => {
const o = of(1, 2, 3).pipe(mergeMapTo(of('foo'), 4)); // $ExpectType Observable<string>
});
@@ -39,6 +47,7 @@ it('should enforce types', () => {

it('should enforce the return type', () => {
const o = of(1, 2, 3).pipe(mergeMapTo(p => p)); // $ExpectError
const p = of(1, 2, 3).pipe(mergeMapTo(4)); // $ExpectError
});

it('should enforce types of the concurrent parameter', () => {