51 lines
1.7 KiB
TypeScript
51 lines
1.7 KiB
TypeScript
/**
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* Copyright (c) 2019 The xterm.js authors. All rights reserved.
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* @license MIT
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*/
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import { assert } from 'chai';
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import { UnicodeService } from 'common/services/UnicodeService';
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import { IUnicodeVersionProvider } from 'common/services/Services';
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class DummyProvider implements IUnicodeVersionProvider {
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version = '123';
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wcwidth(n: number): 0 | 1 | 2 {
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return 2;
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}
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}
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describe('unicode provider', () => {
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let us: UnicodeService;
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beforeEach(() => {
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us = new UnicodeService();
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});
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it('default to V6', () => {
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assert.equal(us.activeVersion, '6');
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assert.deepEqual(us.versions, ['6']);
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assert.doesNotThrow(() => { us.activeVersion = '6'; }, `unknown Unicode version "6"`);
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assert.equal(us.getStringCellWidth('hello'), 5);
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});
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it('activate should throw for unknown version', () => {
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assert.throws(() => { us.activeVersion = '55'; }, 'unknown Unicode version "55"');
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});
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it('should notify about version change', () => {
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const notes: string[] = [];
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us.onChange(version => notes.push(version));
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const dummyProvider = new DummyProvider();
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us.register(dummyProvider);
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us.activeVersion = dummyProvider.version;
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assert.deepEqual(notes, [dummyProvider.version]);
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});
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it('correctly changes provider impl', () => {
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assert.equal(us.getStringCellWidth('hello'), 5);
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const dummyProvider = new DummyProvider();
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us.register(dummyProvider);
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us.activeVersion = dummyProvider.version;
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assert.equal(us.getStringCellWidth('hello'), 2 * 5);
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});
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it('wcwidth V6 emoji test', () => {
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const widthV6 = us.getStringCellWidth('🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣');
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assert.equal(widthV6, 10);
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});
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});
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