75 lines
2.2 KiB
JavaScript
75 lines
2.2 KiB
JavaScript
import { getTestRunner } from './mod.ts';
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import {
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chars,
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ctrl_key,
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is_ascii,
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is_control,
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noop,
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ord,
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strlen,
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truncate,
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} from './utils.ts';
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getTestRunner().then((t) => {
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t.test('noop fn', () => {
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t.assertExists(noop);
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t.assertEquals(noop(), undefined);
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});
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// ---------------------------------------------------------------------------
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// Strings
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// ---------------------------------------------------------------------------
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t.test('ord fn returns 256 on invalid string', () => {
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t.assertEquals(ord(''), 256);
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});
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t.test('chars fn properly splits strings into unicode characters', () => {
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t.assertEquals(chars('😺😸😹'), ['😺', '😸', '😹']);
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});
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t.test('ctrl_key fn returns expected values', () => {
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const ctrl_a = ctrl_key('a');
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t.assertTrue(is_control(ctrl_a));
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t.assertEquals(ctrl_a, String.fromCodePoint(0x01));
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const invalid = ctrl_key('😺');
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t.assertFalse(is_control(invalid));
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t.assertEquals(invalid, '😺');
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});
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t.test('is_ascii properly discerns ascii chars', () => {
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t.assertTrue(is_ascii('asjyverkjhsdf1928374'));
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t.assertFalse(is_ascii('😺acalskjsdf'));
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t.assertFalse(is_ascii('ab😺ac'));
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});
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t.test('is_control fn works as expected', () => {
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t.assertFalse(is_control('abc'));
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t.assertTrue(is_control(String.fromCodePoint(0x01)));
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t.assertFalse(is_control('😺'));
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});
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t.test('strlen fn returns expected length for ascii strings', () => {
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t.assertEquals(strlen('abc'), 'abc'.length);
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});
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t.test('strlen fn returns expected length for multibyte characters', () => {
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t.assertEquals(strlen('😺😸😹'), 3);
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t.assertNotEquals('😺😸😹'.length, strlen('😺😸😹'));
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// Skin tone modifier + base character
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t.assertEquals(strlen('🤰🏼'), 2);
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t.assertNotEquals('🤰🏼'.length, strlen('🤰🏼'));
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// This has 4 sub-characters, and 3 zero-width-joiners
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t.assertEquals(strlen('👨👩👧👦'), 7);
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t.assertNotEquals('👨👩👧👦'.length, strlen('👨👩👧👦'));
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});
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t.test('truncate shortens strings', () => {
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t.assertEquals(truncate('😺😸😹', 1), '😺');
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t.assertEquals(truncate('😺😸😹', 5), '😺😸😹');
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t.assertEquals(truncate('👨👩👧👦', 5), '👨👩👧');
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});
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});
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