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7a1ad33 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | /**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { describe, it, expect } from 'vitest';
import { checkExhaustive, assumeExhaustive } from './checks.js';
describe('checks', () => {
describe('checkExhaustive', () => {
it('should throw an error with default message', () => {
expect(() => {
checkExhaustive('unexpected' as never);
}).toThrow('unexpected value unexpected!');
});
it('should throw an error with custom message', () => {
expect(() => {
checkExhaustive('unexpected' as never, 'custom message');
}).toThrow('custom message');
});
});
describe('assumeExhaustive', () => {
it('should do nothing', () => {
expect(() => {
assumeExhaustive('unexpected' as never);
}).not.toThrow();
});
});
});
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