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Picker

Testing Picker

Test utils

@react-spectrum/test-utils offers common picker interaction utilities which you may find helpful when writing tests. To install, simply add it to your dev dependencies via your preferred package manager.

Once installed, you can access the User that @react-spectrum/test-utils provides in your test file as shown below. This user only needs to be initialized once and then can be used to generate the Picker tester in your test cases. This gives you access to Picker specific utilities that you can then call within your test to query for specific subcomponents or simulate common interactions. The example test case below shows how you might go about setting up the Picker tester, use it to simulate option selection, and verify the picker's state after each interaction.

// Picker.test.ts
import {render} from '@testing-library/react';
import {User} from '@react-spectrum/test-utils';

let testUtilUser = new User({interactionType: 'mouse'});
// ...

it('Picker can select an option via keyboard', async function () {
  // Render your test component/app and initialize the select tester
  let {getByTestId} = render(
    <Picker data-testid="test-select">
    ...
    </Picker>
  );
  let selectTester = testUtilUser.createTester('Select', {root: getByTestId('test-select'), interactionType: 'keyboard'});
  let trigger = selectTester.trigger;
  expect(trigger).toHaveTextContent('Select an item');

  await selectTester.selectOption({option: 'Cat'});
  expect(trigger).toHaveTextContent('Cat');
});

See below for the full definition of the User and the Picker tester.

Properties

NameTypeDefault
advanceTimer['advanceTimer']Default: —
A function used by the test utils to advance timers during interactions. Required for certain aria patterns (e.g. table).
interactionType['interactionType']Default: mouse
The interaction type (mouse, touch, keyboard) that the test util user will use when interacting with a component. This can be overridden at the aria pattern util level if needed.

Methods

constructor(opts: ): void
createTester<T extends >(patternName: T, opts: <T>): <T>
Creates an aria pattern tester, inheriting the options provided to the original user.

Properties

NameType
sectionsHTMLElement[]
Returns the select's sections if present.
listboxHTMLElement | null
Returns the select's listbox if present.
triggerHTMLElement
Returns the select's trigger.

Methods

constructor(opts: ): void
setInteractionType(type: ['interactionType']): void
Set the interaction type used by the select tester.
open(opts: ): Promise<void>
Opens the select. Defaults to using the interaction type set on the select tester.
close(): Promise<void>
Closes the select.
findOption(opts: {
optionIndexOrText: number | string
}): HTMLElement
Returns a option matching the specified index or text content.
selectOption(opts: ): Promise<void>
Selects the desired select option. Defaults to using the interaction type set on the select tester. If necessary, will open the select dropdown beforehand. The desired option can be targeted via the option's node, the option's text, or the option's index.
options(opts: {
element?: HTMLElement
}): HTMLElement[]
Returns the select's options if present. Can be filtered to a subsection of the listbox if provided via element.

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