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61 lines
1.9 KiB
TypeScript
61 lines
1.9 KiB
TypeScript
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import { lruCache } from '@superset-ui/core';
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test('initial LRU', () => {
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expect(lruCache().capacity).toBe(100);
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expect(lruCache(10).capacity).toBe(10);
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expect(lruCache(10).size).toBe(0);
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expect(() => lruCache(0)).toThrow(Error);
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});
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test('LRU operations', () => {
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const cache = lruCache<string>(3);
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cache.set('1', 'a');
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cache.set('2', 'b');
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cache.set('3', 'c');
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cache.set('4', 'd');
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expect(cache.size).toBe(3);
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expect(cache.has('1')).toBeFalsy();
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expect(cache.get('1')).toBeUndefined();
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cache.get('2');
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cache.set('5', 'e');
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expect(cache.has('2')).toBeTruthy();
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expect(cache.has('3')).toBeFalsy();
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// @ts-expect-error
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expect(() => cache.set(0)).toThrow(TypeError);
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// @ts-expect-error
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expect(() => cache.get(0)).toThrow(TypeError);
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expect(cache.size).toBe(3);
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cache.clear();
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expect(cache.size).toBe(0);
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expect(cache.capacity).toBe(3);
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});
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test('LRU handle null and undefined', () => {
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const cache = lruCache();
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cache.set('a', null);
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cache.set('b', undefined);
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expect(cache.has('a')).toBeTruthy();
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expect(cache.has('b')).toBeTruthy();
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expect(cache.get('a')).toBeNull();
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expect(cache.get('b')).toBeUndefined();
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});
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