text: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 {
    fDuration,
    now,
    epochTimeXHoursAgo,
    epochTimeXDaysAgo,
    epochTimeXYearsAgo,
  } from '../../../src/modules/dates';
  
  describe('fDuration', () => {
    it('is a function', () => {
      expect(typeof fDuration).toBe('function');
    });
  
    it('returns a string', () => {
      expect(typeof fDuration(new Date(), new Date())).toBe('string');
    });
  
    it('returns the expected output', () => {
      const output = fDuration('1496293608897', '1496293623406');
      expect(output).toBe('00:00:14.50');
    });
  });
  
  describe('now', () => {
    it('is a function', () => {
      expect(typeof now).toBe('function');
    });
  
    it('returns a number', () => {
      expect(typeof now()).toBe('number');
    });
  });
  
  describe('epochTimeXHoursAgo', () => {
    it('is a function', () => {
      expect(typeof epochTimeXHoursAgo).toBe('function');
    });
  
    it('returns a number', () => {
      expect(typeof epochTimeXHoursAgo(1)).toBe('number');
    });
  });
  
  describe('epochTimeXDaysAgo', () => {
    it('is a function', () => {
      expect(typeof epochTimeXDaysAgo).toBe('function');
    });
  
    it('returns a number', () => {
      expect(typeof epochTimeXDaysAgo(1)).toBe('number');
    });
  });
  
  describe('epochTimeXYearsAgo', () => {
    it('is a function', () => {
      expect(typeof epochTimeXYearsAgo).toBe('function');
    });
  
    it('returns a number', () => {
      expect(typeof epochTimeXYearsAgo(1)).toBe('number');
    });
  });
  