Function toBeChecked

src/matchers/to-be-checked.ts:16–38

(this: jest.MatcherContext, instance: TestInstance)

import { checkHostElement } from './utils';

export function toBeChecked(this: jest.MatcherContext, instance: TestInstance) {
  checkHostElement(instance, toBeChecked, this);

  if (!isHostSwitch(instance) && !isSupportedAccessibilityElement(instance)) {
    throw new ErrorWithStack(
      `toBeChecked() works only on host "Switch" instances or accessible instance with "checkbox", "radio" or "switch" role.`,
      toBeChecked,
    );
  }

  return {
    pass: computeAriaChecked(instance) === true,
    message: () => {
      const is = this.isNot ? 'is' : 'is not';
      return [
        matcherHint(`${this.isNot ? '.not' : ''}.toBeChecked`, 'instance', ''),
        '',
        `Received instance ${is} checked:`,
        redent(formatElement(instance), 2),
      ].join('\n');
    },
  };
}

function isSupportedAccessibilityElement(instance: TestInstance) {
  if (!isAccessibilityElement(instance)) {