|
| 1 | +import React from 'react'; |
| 2 | +import { render, screen, fireEvent } from '@testing-library/react'; |
| 3 | +import { Tabs, Tab } from './Tabs'; |
| 4 | + |
| 5 | +describe('Tabs', () => { |
| 6 | + it('renders tab buttons with author-defined labels', () => { |
| 7 | + render( |
| 8 | + <Tabs> |
| 9 | + <Tab value="a" label="Alpha"> |
| 10 | + Content A |
| 11 | + </Tab> |
| 12 | + <Tab value="b" label="Beta"> |
| 13 | + Content B |
| 14 | + </Tab> |
| 15 | + </Tabs>, |
| 16 | + ); |
| 17 | + |
| 18 | + expect(screen.getByRole('tab', { name: 'Alpha' })).toBeInTheDocument(); |
| 19 | + expect(screen.getByRole('tab', { name: 'Beta' })).toBeInTheDocument(); |
| 20 | + }); |
| 21 | + |
| 22 | + it('shows the first tab content by default', () => { |
| 23 | + render( |
| 24 | + <Tabs> |
| 25 | + <Tab value="a" label="Alpha"> |
| 26 | + Content A |
| 27 | + </Tab> |
| 28 | + <Tab value="b" label="Beta"> |
| 29 | + Content B |
| 30 | + </Tab> |
| 31 | + </Tabs>, |
| 32 | + ); |
| 33 | + |
| 34 | + expect(screen.getByText('Content A')).toBeInTheDocument(); |
| 35 | + expect(screen.queryByText('Content B')).not.toBeInTheDocument(); |
| 36 | + }); |
| 37 | + |
| 38 | + it('switches content when a tab is clicked', () => { |
| 39 | + render( |
| 40 | + <Tabs> |
| 41 | + <Tab value="a" label="Alpha"> |
| 42 | + Content A |
| 43 | + </Tab> |
| 44 | + <Tab value="b" label="Beta"> |
| 45 | + Content B |
| 46 | + </Tab> |
| 47 | + </Tabs>, |
| 48 | + ); |
| 49 | + |
| 50 | + fireEvent.click(screen.getByRole('tab', { name: 'Beta' })); |
| 51 | + |
| 52 | + expect(screen.queryByText('Content A')).not.toBeInTheDocument(); |
| 53 | + expect(screen.getByText('Content B')).toBeInTheDocument(); |
| 54 | + }); |
| 55 | + |
| 56 | + it('sets aria-selected correctly', () => { |
| 57 | + render( |
| 58 | + <Tabs> |
| 59 | + <Tab value="a" label="Alpha"> |
| 60 | + Content A |
| 61 | + </Tab> |
| 62 | + <Tab value="b" label="Beta"> |
| 63 | + Content B |
| 64 | + </Tab> |
| 65 | + </Tabs>, |
| 66 | + ); |
| 67 | + |
| 68 | + expect(screen.getByRole('tab', { name: 'Alpha' })).toHaveAttribute('aria-selected', 'true'); |
| 69 | + expect(screen.getByRole('tab', { name: 'Beta' })).toHaveAttribute('aria-selected', 'false'); |
| 70 | + |
| 71 | + fireEvent.click(screen.getByRole('tab', { name: 'Beta' })); |
| 72 | + |
| 73 | + expect(screen.getByRole('tab', { name: 'Alpha' })).toHaveAttribute('aria-selected', 'false'); |
| 74 | + expect(screen.getByRole('tab', { name: 'Beta' })).toHaveAttribute('aria-selected', 'true'); |
| 75 | + }); |
| 76 | + |
| 77 | + it('renders a tabpanel for the active tab', () => { |
| 78 | + render( |
| 79 | + <Tabs> |
| 80 | + <Tab value="a" label="Alpha"> |
| 81 | + Content A |
| 82 | + </Tab> |
| 83 | + <Tab value="b" label="Beta"> |
| 84 | + Content B |
| 85 | + </Tab> |
| 86 | + </Tabs>, |
| 87 | + ); |
| 88 | + |
| 89 | + expect(screen.getByRole('tabpanel')).toHaveTextContent('Content A'); |
| 90 | + }); |
| 91 | + |
| 92 | + it('renders nothing for Tab used outside of Tabs', () => { |
| 93 | + const { container } = render( |
| 94 | + <Tab value="a" label="Alpha"> |
| 95 | + Orphan |
| 96 | + </Tab>, |
| 97 | + ); |
| 98 | + expect(container).toBeEmptyDOMElement(); |
| 99 | + }); |
| 100 | +}); |
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