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86 lines
2.4 KiB
JavaScript
86 lines
2.4 KiB
JavaScript
const ArrayUtils = require('./ArrayUtils');
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describe('ArrayUtils', () => {
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it('should remove array elements', (async () => {
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let a = ['un', 'deux', 'trois'];
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a = ArrayUtils.removeElement(a, 'deux');
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expect(a[0]).toBe('un');
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expect(a[1]).toBe('trois');
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expect(a.length).toBe(2);
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a = ['un', 'deux', 'trois'];
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a = ArrayUtils.removeElement(a, 'not in there');
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expect(a.length).toBe(3);
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}));
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it('should pull array elements', (async () => {
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expect(ArrayUtils.pull(['a', 'b', 'c', 'a', 'b', 'c'], 'a')).toEqual(['b', 'c', 'b', 'c']);
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expect(ArrayUtils.pull(['b', 'c', 'b', 'c'], 'a')).toEqual(['b', 'c', 'b', 'c']);
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expect(ArrayUtils.pull(['a', 'b', 'c', 'a', 'b', 'c'], 'a', 'c')).toEqual(['b', 'b']);
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expect(ArrayUtils.pull([], 'a')).toEqual([]);
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}));
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it('should find items using binary search', (async () => {
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let items = ['aaa', 'ccc', 'bbb'];
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expect(ArrayUtils.binarySearch(items, 'bbb')).toBe(-1); // Array not sorted!
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items.sort();
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expect(ArrayUtils.binarySearch(items, 'bbb')).toBe(1);
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expect(ArrayUtils.binarySearch(items, 'ccc')).toBe(2);
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expect(ArrayUtils.binarySearch(items, 'oops')).toBe(-1);
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expect(ArrayUtils.binarySearch(items, 'aaa')).toBe(0);
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items = [];
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expect(ArrayUtils.binarySearch(items, 'aaa')).toBe(-1);
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}));
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it('should compare arrays', (async () => {
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expect(ArrayUtils.contentEquals([], [])).toBe(true);
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expect(ArrayUtils.contentEquals(['a'], ['a'])).toBe(true);
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expect(ArrayUtils.contentEquals(['b', 'a'], ['a', 'b'])).toBe(true);
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expect(ArrayUtils.contentEquals(['b'], ['a', 'b'])).toBe(false);
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}));
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it('should merge overlapping intervals', (async () => {
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const testCases = [
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[
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[],
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[],
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],
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[
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[[0, 50]],
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[[0, 50]],
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],
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[
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[[0, 20], [20, 30]],
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[[0, 30]],
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],
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[
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[[0, 10], [10, 50], [15, 30], [20, 80], [80, 95]],
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[[0, 95]],
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],
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[
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[[0, 5], [0, 10], [25, 35], [30, 60], [50, 60], [85, 100]],
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[[0, 10], [25, 60], [85, 100]],
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],
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[
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[[0, 5], [10, 40], [35, 50], [35, 75], [50, 60], [80, 85], [80, 90]],
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[[0, 5], [10, 75], [80, 90]],
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],
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];
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// eslint-disable-next-line github/array-foreach -- Old code before rule was applied
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testCases.forEach((t, i) => {
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const intervals = t[0];
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const expected = t[1];
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const actual = ArrayUtils.mergeOverlappingIntervals(intervals, intervals.length);
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expect(actual).toEqual(expected, `Test case ${i}`);
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});
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}));
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});
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