1// Copyright (C) 2023 The Android Open Source Project 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15import {classNames} from './classnames'; 16 17test('classnames', () => { 18 expect(classNames('foo', 'bar')).toEqual('foo bar'); 19 expect(classNames('foo', '', 'bar')).toEqual('foo bar'); 20 expect(classNames(false, 'foo', 'bar')).toEqual('foo bar'); 21 expect(classNames(undefined, 'foo', 'bar')).toEqual('foo bar'); 22 expect(classNames('foo', 'bar', ['baz', 'qux'])).toEqual('foo bar baz qux'); 23 expect(classNames('foo bar', 'baz')).toEqual('foo bar baz'); 24}); 25 26test('example usecase with flags', () => { 27 const foo = true; 28 const bar = false; 29 const baz = true; 30 expect(classNames(foo && 'foo', bar && 'bar', baz && 'baz')).toEqual( 31 'foo baz', 32 ); 33}); 34 35test('example usecase with possibly undefined classnames', () => { 36 let fooClass: string | undefined; 37 const barClass = 'bar'; 38 expect(classNames(fooClass, barClass)).toEqual('bar'); 39}); 40