javascript-time-ago/modules/steps/getStep.test.js

Localized relative date/time formatting

import getStep from './getStep.js';
import round from './round.js';
describe('getStep', function () {
  it('should return nothing if no time units are supported', function () {
    expect(getStep(round, 0, {
      units: ['femtosecond']
    })).to.be.undefined;
  });

  // it('should throw if a non-first step does not have a `minTime` or `test()`', () => {
  // 	expect(getStep([{ unit: 'second' }], 2, { units: ['second'] })).to.deep.equal({ unit: 'second' })
  //
  // 	expect(() => {
  // 		getStep([{ unit: 'second' }, { unit: 'minute' }], 2, { units: ['second', 'minute'] })
  // 	}).to.throw(
  // 		'Each step must define either `minTime` or `test()`, except for the first one. Got "undefined", undefined. Step: {"unit":"minute"}'
  // 	)
  // })

  it('should fall back to previous step if granularity is too high for the next step', function () {
    var steps = round.slice();
    steps[1].formatAs.should.equal('second');
    steps[1].granularity = 3;
    getStep(steps, 1.49, {
      now: 0,
      units: ['now', 'second']
    }).formatAs.should.equal('now');

    // And if there's no previous step, then use the current one.

    var firstStep = steps[0];
    steps.splice(0, 1);
    getStep(steps, 1.49, {
      now: 0,
      units: ['now', 'second']
    }).formatAs.should.equal('second');
    steps.unshift(firstStep);
    delete steps[1].granularity;
  });
  it('should support `minTime` object', function () {
    expect(getStep([{
      unit: 'second'
    }, {
      minTime: {
        "default": 10
      },
      unit: 'minute'
    }], 5, {
      now: 0,
      units: ['second', 'minute']
    }).unit).to.equal('second');
    expect(getStep([{
      unit: 'second'
    }, {
      minTime: {
        "default": 10
      },
      unit: 'minute'
    }], 10, {
      now: 0,
      units: ['second', 'minute']
    }).unit).to.equal('minute');
    expect(getStep([{
      id: 'seconds',
      unit: 'second'
    }, {
      minTime: {
        seconds: 20,
        "default": 10
      },
      unit: 'minute'
    }], 10, {
      now: 0,
      units: ['second', 'minute']
    }).unit).to.equal('second');
  });
  it('should support legacy `threshold()` function', function () {
    expect(getStep([{
      unit: 'second'
    }, {
      threshold: function threshold() {
        return 10;
      },
      unit: 'minute'
    }], 5, {
      now: 0,
      units: ['second', 'minute']
    }).unit).to.equal('second');
    expect(getStep([{
      unit: 'second'
    }, {
      threshold: function threshold() {
        return 10;
      },
      unit: 'minute'
    }], 10, {
      now: 0,
      units: ['second', 'minute']
    }).unit).to.equal('minute');
  });
  it('should stop when reaching a step that has no "minTime" and for which "minTime" could not be deduced', function () {
    expect(getStep([{
      formatAs: 'second'
    }, {
      formatAs: 'unsupported-time-unit'
    }], 10, {
      now: 0,
      units: ['second', 'unsupported-time-unit']
    }).formatAs).to.equal('second');
  });
});
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