Add UI tests

hyperglass/ui/util/common.test.ts

@@ -0,0 +1,76 @@
+import { all, chunkArray, entries, dedupObjectArray, andJoin } from './common';
+
+test('all - all items are truthy', () => {
+  expect(all(1 === 1, true, 'one' === 'one')).toBe(true);
+});
+
+test('all - one item is not truthy', () => {
+  expect(all(1 === 1, false, 'one' === 'one')).toBe(false);
+});
+
+describe('chunkArray - chunk array into arrays of n size', () => {
+  const input = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+  const result = chunkArray(input, 2);
+  test('chunked array length', () => {
+    expect(result).toHaveLength(Math.round(input.length / 2));
+  });
+  test.each(result)('verify chunk %#', item => {
+    expect(input).toContain(item);
+  });
+});
+
+describe('entries - typed Object.entries()', () => {
+  const obj = { one: 1, two: 2, three: 3 };
+  const result = entries(obj);
+  const expectedKeys = ['one', 'two', 'three'];
+  const expectedValues = [1, 2, 3];
+
+  test.each(result)('verify k/v pair %#', (k, v) => {
+    expect(expectedKeys).toContain(k);
+    expect(expectedValues).toContain(v);
+  });
+});
+
+describe('dedupObjectArray - deduplicate object array', () => {
+  const objArray = [
+    { one: 1, two: 2, three: 3 },
+    { four: 4, five: 5, six: 6 },
+    { seven: 7, eight: 8, nine: 9 },
+    { zero: 0, one: 1, thousand: 1_000 },
+  ];
+  const result = dedupObjectArray(objArray, 'one');
+  test('ensure duplicate object is removed', () => {
+    expect(result.length).toBe(3);
+  });
+  test.each(result)('verify objects', obj => {
+    expect(obj).toEqual(expect.not.objectContaining(objArray[3]));
+  });
+});
+
+describe('andJoin - join array of strings to sentence structure', () => {
+  test('basic sentence', () => {
+    const result = andJoin(['Tom', 'Dick', 'Harry']);
+    expect(result).toBe('Tom, Dick, & Harry');
+  });
+  test('one item', () => {
+    const result = andJoin(['Tom']);
+    expect(result).toBe('Tom');
+  });
+  test('mixed types', () => {
+    // @ts-expect-error Test case
+    const result = andJoin(['Tom', 100, 'Harry']);
+    expect(result).toBe('Tom & Harry');
+  });
+  test('(options) wrapped', () => {
+    const result = andJoin(['Tom', 'Dick', 'Harry'], { wrap: '*' });
+    expect(result).toBe('*Tom*, *Dick*, & *Harry*');
+  });
+  test("(options) 'and' separator", () => {
+    const result = andJoin(['Tom', 'Dick', 'Harry'], { separator: 'and' });
+    expect(result).toBe('Tom, Dick, and Harry');
+  });
+  test('(options) no oxford comma', () => {
+    const result = andJoin(['Tom', 'Dick', 'Harry'], { oxfordComma: false });
+    expect(result).toBe('Tom, Dick & Harry');
+  });
+});