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')).toEqual('foo bar baz'); 23}); 24 25test('example usecase with flags', () => { 26 const foo = true; 27 const bar = false; 28 const baz = true; 29 expect(classNames(foo && 'foo', bar && 'bar', baz && 'baz')).toEqual( 30 'foo baz', 31 ); 32}); 33 34test('example usecase with possibly undefined classnames', () => { 35 let fooClass: string | undefined; 36 const barClass = 'bar'; 37 expect(classNames(fooClass, barClass)).toEqual('bar'); 38}); 39