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to-have-display-value.js
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to-have-display-value.js
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import {render} from './helpers/test-utils'
test('it should work as expected', () => {
const {queryByTestId} = render(`
<select id="fruits" data-testid="select">
<option value="">Select a fruit...</option>
<option value="ananas">Ananas</option>
<option value="banana">Banana</option>
<option value="avocado">Avocado</option>
</select>
`)
expect(queryByTestId('select')).toHaveDisplayValue('Select a fruit...')
expect(queryByTestId('select')).not.toHaveDisplayValue('Select')
expect(queryByTestId('select')).not.toHaveDisplayValue('Banana')
expect(() =>
expect(queryByTestId('select')).not.toHaveDisplayValue('Select a fruit...'),
).toThrow()
expect(() =>
expect(queryByTestId('select')).toHaveDisplayValue('Ananas'),
).toThrow()
queryByTestId('select').value = 'banana'
expect(queryByTestId('select')).toHaveDisplayValue('Banana')
expect(queryByTestId('select')).toHaveDisplayValue(/[bB]ana/)
})
describe('with multiple select', () => {
function mount() {
return render(`
<select id="fruits" data-testid="select" multiple>
<option value="">Select a fruit...</option>
<option value="ananas" selected>Ananas</option>
<option value="banana">Banana</option>
<option value="avocado" selected>Avocado</option>
</select>
`)
}
it('matches only when all the multiple selected values are equal to all the expected values', () => {
const subject = mount()
expect(subject.queryByTestId('select')).toHaveDisplayValue([
'Ananas',
'Avocado',
])
expect(() =>
expect(subject.queryByTestId('select')).not.toHaveDisplayValue([
'Ananas',
'Avocado',
]),
).toThrow()
expect(subject.queryByTestId('select')).not.toHaveDisplayValue([
'Ananas',
'Avocado',
'Orange',
])
expect(subject.queryByTestId('select')).not.toHaveDisplayValue('Ananas')
expect(() =>
expect(subject.queryByTestId('select')).toHaveDisplayValue('Ananas'),
).toThrow()
Array.from(subject.queryByTestId('select').options).forEach(option => {
option.selected = ['ananas', 'banana'].includes(option.value)
})
expect(subject.queryByTestId('select')).toHaveDisplayValue([
'Ananas',
'Banana',
])
})
it('matches even when the expected values are unordered', () => {
const subject = mount()
expect(subject.queryByTestId('select')).toHaveDisplayValue([
'Avocado',
'Ananas',
])
})
it('matches with regex expected values', () => {
const subject = mount()
expect(subject.queryByTestId('select')).toHaveDisplayValue([
/[Aa]nanas/,
'Avocado',
])
})
})
test('it should work with input elements', () => {
const {queryByTestId} = render(`
<input type="text" data-testid="input" value="Luca" />
`)
expect(queryByTestId('input')).toHaveDisplayValue('Luca')
expect(queryByTestId('input')).toHaveDisplayValue(/Luc/)
queryByTestId('input').value = 'Piero'
expect(queryByTestId('input')).toHaveDisplayValue('Piero')
})
test('it should work with textarea elements', () => {
const {queryByTestId} = render(
'<textarea data-testid="textarea-example">An example description here.</textarea>',
)
expect(queryByTestId('textarea-example')).toHaveDisplayValue(
'An example description here.',
)
expect(queryByTestId('textarea-example')).toHaveDisplayValue(/example/)
queryByTestId('textarea-example').value = 'Another example'
expect(queryByTestId('textarea-example')).toHaveDisplayValue(
'Another example',
)
})
test('it should throw if element is not valid', () => {
const {queryByTestId} = render(`
<div data-testid="div">Banana</div>
<input type="radio" data-testid="radio" value="Something" />
<input type="checkbox" data-testid="checkbox" />
`)
let errorMessage
try {
expect(queryByTestId('div')).toHaveDisplayValue('Banana')
} catch (err) {
errorMessage = err.message
}
expect(errorMessage).toMatchInlineSnapshot(
`".toHaveDisplayValue() currently supports only input, textarea or select elements, try with another matcher instead."`,
)
try {
expect(queryByTestId('radio')).toHaveDisplayValue('Something')
} catch (err) {
errorMessage = err.message
}
expect(errorMessage).toMatchInlineSnapshot(
`".toHaveDisplayValue() currently does not support input[type=\\"radio\\"], try with another matcher instead."`,
)
try {
expect(queryByTestId('checkbox')).toHaveDisplayValue(true)
} catch (err) {
errorMessage = err.message
}
expect(errorMessage).toMatchInlineSnapshot(
`".toHaveDisplayValue() currently does not support input[type=\\"checkbox\\"], try with another matcher instead."`,
)
})