| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | * |
| 7 | * @flow |
| 8 | */ |
| 9 | |
| 10 | import {extractHOCNames} from 'react-devtools-shared/src/backend/views/utils'; |
| 11 | |
| 12 | describe('extractHOCNames', () => { |
| 13 | it('should return an empty result for an empty display name', () => { |
| 14 | expect(extractHOCNames('')).toEqual({ |
| 15 | baseComponentName: '', |
| 16 | hocNames: [], |
| 17 | }); |
| 18 | }); |
| 19 | |
| 20 | it('should not extract anything from an unwrapped component', () => { |
| 21 | expect(extractHOCNames('Button')).toEqual({ |
| 22 | baseComponentName: 'Button', |
| 23 | hocNames: [], |
| 24 | }); |
| 25 | }); |
| 26 | |
| 27 | it('should extract a single wrapper', () => { |
| 28 | expect(extractHOCNames('Memo(Button)')).toEqual({ |
| 29 | baseComponentName: 'Button', |
| 30 | hocNames: ['Memo'], |
| 31 | }); |
| 32 | }); |
| 33 | |
| 34 | it('should extract every wrapper of a nested display name', () => { |
| 35 | expect(extractHOCNames('Memo(ForwardRef(Button))')).toEqual({ |
| 36 | baseComponentName: 'Button', |
| 37 | hocNames: ['Memo', 'ForwardRef'], |
| 38 | }); |
| 39 | }); |
| 40 | |
| 41 | it('should extract wrappers nested more than two levels deep', () => { |
| 42 | expect(extractHOCNames('Memo(Forget(ForwardRef(Button)))')).toEqual({ |
| 43 | baseComponentName: 'Button', |
| 44 | hocNames: ['Memo', 'Forget', 'ForwardRef'], |
| 45 | }); |
| 46 | }); |
| 47 | |
| 48 | it('should extract lowercase wrapper names verbatim', () => { |
| 49 | expect(extractHOCNames('withRouter(Button)')).toEqual({ |
| 50 | baseComponentName: 'Button', |
| 51 | hocNames: ['withRouter'], |
| 52 | }); |
| 53 | }); |
| 54 | |
| 55 | it('should extract a mix of lowercase and uppercase wrappers', () => { |
| 56 | expect(extractHOCNames('connect(Memo(Button))')).toEqual({ |
| 57 | baseComponentName: 'Button', |
| 58 | hocNames: ['connect', 'Memo'], |
| 59 | }); |
| 60 | }); |
| 61 | |
| 62 | it('should not extract from a display name that is not shaped like a wrapper', () => { |
| 63 | expect(extractHOCNames('Foo (bar)')).toEqual({ |
| 64 | baseComponentName: 'Foo (bar)', |
| 65 | hocNames: [], |
| 66 | }); |
| 67 | expect(extractHOCNames('Memo(Button) extra')).toEqual({ |
| 68 | baseComponentName: 'Memo(Button) extra', |
| 69 | hocNames: [], |
| 70 | }); |
| 71 | }); |
| 72 | }); |