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fix(facade): Fix bug in TS indexOf 

startIndex defaults to -1, which in Chrome results in returning -1
regardless of the other parameters.

Added regression tests.
This commit is contained in:
Tim Blasi 2015-05-27 18:16:02 -07:00
parent c32dbad747
commit cda35101df
2 changed files with 13 additions and 1 deletions
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2
modules/angular2/src/facade/collection.ts
View File

@ -171,7 +171,7 @@ export class ListWrapper {
}
return null;
}
static indexOf(array: List<any>, value, startIndex = -1) {
static indexOf(array: List<any>, value, startIndex = 0) {
return array.indexOf(value, startIndex);
}
static reduce<T, E>(list: List<T>,

12
modules/angular2/test/facade/collection_spec.ts
View File

@ -58,6 +58,18 @@ export function main() {
it('should support negative end',
() => { expect(ListWrapper.slice(l, -3, -1)).toEqual([2, 3]); });
});
describe('indexOf', () => {
beforeEach(() => { l = [1, 2, 3, 4]; });
it('should find values that exist', () => { expect(ListWrapper.indexOf(l, 1)).toEqual(0); });
it('should not find values that do not exist',
() => { expect(ListWrapper.indexOf(l, 9)).toEqual(-1); });
it('should respect the startIndex parameter',
() => { expect(ListWrapper.indexOf(l, 1, 1)).toEqual(-1); });
});
});
describe('StringMapWrapper', () => {