feat: Initial clean release of CHM

packages/lib/ArrayUtils.test.ts

@@ -0,0 +1,91 @@
+import * as ArrayUtils from './ArrayUtils';
+
+describe('ArrayUtils', () => {
+
+
+
+	it('should return unique elements', (async () => {
+		expect(ArrayUtils.unique(['un', 'deux', 'un', 'trois', 'deux'])).toEqual(['un', 'deux', 'trois']);
+		expect(ArrayUtils.unique([1, 2, 1, 3, 2])).toEqual([1, 2, 3]);
+		expect(ArrayUtils.unique([])).toEqual([]);
+	}));
+
+	it('should remove array elements', (async () => {
+		let a = ['un', 'deux', 'trois'];
+		a = ArrayUtils.removeElement(a, 'deux');
+
+		expect(a[0]).toBe('un');
+		expect(a[1]).toBe('trois');
+		expect(a.length).toBe(2);
+
+		a = ['un', 'deux', 'trois'];
+		a = ArrayUtils.removeElement(a, 'not in there');
+		expect(a.length).toBe(3);
+	}));
+
+	it('should pull array elements', (async () => {
+		expect(ArrayUtils.pull(['a', 'b', 'c', 'a', 'b', 'c'], 'a')).toEqual(['b', 'c', 'b', 'c']);
+		expect(ArrayUtils.pull(['b', 'c', 'b', 'c'], 'a')).toEqual(['b', 'c', 'b', 'c']);
+		expect(ArrayUtils.pull(['a', 'b', 'c', 'a', 'b', 'c'], 'a', 'c')).toEqual(['b', 'b']);
+		expect(ArrayUtils.pull([], 'a')).toEqual([]);
+	}));
+
+	it('should find items using binary search', (async () => {
+		let items = ['aaa', 'ccc', 'bbb'];
+		expect(ArrayUtils.binarySearch(items, 'bbb')).toBe(-1); // Array not sorted!
+		items.sort();
+		expect(ArrayUtils.binarySearch(items, 'bbb')).toBe(1);
+		expect(ArrayUtils.binarySearch(items, 'ccc')).toBe(2);
+		expect(ArrayUtils.binarySearch(items, 'oops')).toBe(-1);
+		expect(ArrayUtils.binarySearch(items, 'aaa')).toBe(0);
+
+		items = [];
+		expect(ArrayUtils.binarySearch(items, 'aaa')).toBe(-1);
+	}));
+
+	it('should compare arrays', (async () => {
+		expect(ArrayUtils.contentEquals([], [])).toBe(true);
+		expect(ArrayUtils.contentEquals(['a'], ['a'])).toBe(true);
+		expect(ArrayUtils.contentEquals(['b', 'a'], ['a', 'b'])).toBe(true);
+		expect(ArrayUtils.contentEquals(['b'], ['a', 'b'])).toBe(false);
+	}));
+
+	it('should merge overlapping intervals', (async () => {
+		const testCases: [[number, number][], [number, number][]][] = [
+			[
+				[],
+				[],
+			],
+			[
+				[[0, 50]],
+				[[0, 50]],
+			],
+			[
+				[[0, 20], [20, 30]],
+				[[0, 30]],
+			],
+			[
+				[[0, 10], [10, 50], [15, 30], [20, 80], [80, 95]],
+				[[0, 95]],
+			],
+			[
+				[[0, 5], [0, 10], [25, 35], [30, 60], [50, 60], [85, 100]],
+				[[0, 10], [25, 60], [85, 100]],
+			],
+			[
+				[[0, 5], [10, 40], [35, 50], [35, 75], [50, 60], [80, 85], [80, 90]],
+				[[0, 5], [10, 75], [80, 90]],
+			],
+		];
+
+		// eslint-disable-next-line github/array-foreach -- Old code before rule was applied
+		testCases.forEach((t) => {
+			const intervals = t[0];
+			const expected = t[1];
+
+			const actual = ArrayUtils.mergeOverlappingIntervals(intervals, intervals.length);
+			expect(actual).toEqual(expected);
+		});
+	}));
+
+});