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fix(observable-array): reduce no longer ignores zero as initial value (#6402)

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* fix(observable-array): reduce no longer ignores zero as initial value

* fix(observable-array): reduceRight now functions  properly when initial value is not specified or zero
This commit is contained in:
Nicu
2018-10-19 17:14:47 +03:00
committed by Alexander Vakrilov
parent a3f149325f
commit c0438df9a7
2 changed files with 32 additions and 4 deletions
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28
tests/app/data/observable-array-tests.ts
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@@ -646,6 +646,34 @@ export const test_reduce_with_initial_value = function () {
TKUnit.assertEqual(result, 11, "ObservableArray reduce function broken when Initial Value is passed.");
};
export const test_reduce_with_zero_as_initial_value = function () {
const sa = [{prop: 1}, {prop: 2}, {prop: 3}];
let array: ObservableArray<any> = new ObservableArray(sa);
const result = array.reduce((a, b) => a + b.prop, 0);
TKUnit.assertEqual(result, 6, "ObservableArray reduce function broken when Initial Value is zero.");
};
export const test_reduceRight_isDefined = function () {
TKUnit.assert(typeof (array.reduceRight) === "function", "Method 'reduceRight()' should be defined!");
};
export const test_reduceRight_without_initial_value = function () {
const sa = [1, 2, 3];
let array: ObservableArray<number> = new ObservableArray(sa);
const result = array.reduceRight((a, b) => a + b);
TKUnit.assertEqual(result, 6, "ObservableArray reduceRight function broken when initialValue is missing");
};
export const test_reduceRight_with_initial_value = function () {
const sa = [1, 2, 3];
let array: ObservableArray<number> = new ObservableArray(sa);
const result = array.reduceRight((a, b) => a + b, 5);
TKUnit.assertEqual(result, 11, "ObservableArray reduceRight function broken when Initial Value is passed.");
};
export const test_reduceRight_with_zero_as_initial_value = function () {
const sa = [{prop: 1}, {prop: 2}, {prop: 3}];
let array: ObservableArray<any> = new ObservableArray(sa);
const result = array.reduceRight((a, b) => a + b.prop, 0);
TKUnit.assertEqual(result, 6, "ObservableArray reduceRight function broken when Initial Value is zero.");
};