/*
 * Copyright 2021 The Backstage Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { createVersionedValueMap } from './VersionedValue';

describe('createVersionedValueMap', () => {
  it('should be empty', () => {
    const map = createVersionedValueMap({});

    // @ts-expect-error
    expect(map.atVersion(1 as any)).toBe(undefined);
  });

  it('should access values by version', () => {
    const map = createVersionedValueMap({ 1: 'v1', 2: 'v2' });

    expect(map.atVersion(1)).toBe('v1');
    expect(map.atVersion(2)).toBe('v2');

    // @ts-expect-error
    expect(map.atVersion(0)).toBe(undefined);
    // @ts-expect-error
    expect(map.atVersion(NaN)).toBe(undefined);
    // @ts-expect-error
    expect(map.atVersion(Infinity)).toBe(undefined);
  });
});
