unexpected-date/test/between.spec.js

Unexpected plugin for date/time assertions

var unexpected = require('unexpected'),
  unexpectedDate = require('../lib/unexpected-date');

describe('unexpected-date', function() {
  var expect = unexpected.clone().use(unexpectedDate);

  // Make sure that error messages are rendered deterministically,
  // regardless of the width of the terminal window:
  expect.output.preferredWidth = 80;


  var dateA = new Date(2010, 10, 10);
  var dateB = new Date(2010, 10, 11);
  var dateC = new Date(2010, 10, 12);

  describe('to be between', function() {
    it('passes if the subject occurs between the two values', function() {
      expect(new Date(1), 'to be between', new Date(0), new Date(2));
    });

    it('throws the correct error if the assertion fails', function() {
      expect(
        function() {
          expect(dateA, 'to be between', dateB, dateC);
        },
        'to error with',
        'expected new Date(\'Tue, 09 Nov 2010 18:30:00 GMT\')\n' +
              'to be between new Date(\'Wed, 10 Nov 2010 18:30:00 GMT\') ' +
              'and new Date(\'Thu, 11 Nov 2010 18:30:00 GMT\')'
      );
    });
  });

  describe('not to be between', function() {
    it('passes if the subject does not occur between the two values', function() {
      expect(new Date(0), 'not to be between', new Date(1), new Date(2));
    });

    it('throws the correct error if the assertion fails', function() {
      expect(
        function() {
          expect(dateB, 'not to be between', dateA, dateC);
        },
        'to error with',
        'expected new Date(\'Wed, 10 Nov 2010 18:30:00 GMT\')\n' +
              'not to be between new Date(\'Tue, 09 Nov 2010 18:30:00 GMT\') ' +
              'and new Date(\'Thu, 11 Nov 2010 18:30:00 GMT\')'
      );
    });
  });

  describe('to be inclusively between', function() {
    it('passes if the subject is the same as the first value', function() {
      expect(new Date(0), 'to be inclusively between', new Date(0), new Date(1));
    });

    it('passes if the subject is the same as the second value', function() {
      expect(new Date(1), 'to be inclusively between', new Date(0), new Date(1));
    });

    it('passes if the subject occurs betwen the two values', function() {
      expect(new Date(1), 'to be inclusively between', new Date(0), new Date(2));
    });

    it('passes if the two values are the same', function() {
      expect(new Date(0), 'to be inclusively between', new Date(0), new Date(0));
    });

    it('throws the correct error if the assertion fails', function() {
      expect(
        function() {
          expect(new Date(2010, 1, 4), 'to be inclusively between', new Date(2010, 1, 1), new Date(2010, 1, 1, 23));
        },
        'to error with',
        'expected new Date(\'Wed, 03 Feb 2010 18:30:00 GMT\')\n' +
               'to be inclusively between new Date(\'Sun, 31 Jan 2010 18:30:00 GMT\') ' +
               'and new Date(\'Mon, 01 Feb 2010 17:30:00 GMT\')'
      );
    });
  });

  describe('not to be inclusively between', function() {
    it('passes if the subject is neither the same as the first value or the second, nor does it occur between them', function() {
      expect(new Date(0), 'not to be inclusively between', new Date(1), new Date(1));
    });

    it('throws the correct error if the assertion fails', function() {
      expect(
        function() {
          expect(new Date(2010, 1, 2), 'not to be inclusively between', new Date(2010, 1, 2), new Date(2010, 1, 2));
        },
        'to error with',
        'expected new Date(\'Mon, 01 Feb 2010 18:30:00 GMT\')\n' +
               'not to be inclusively between new Date(\'Mon, 01 Feb 2010 18:30:00 GMT\') ' +
               'and new Date(\'Mon, 01 Feb 2010 18:30:00 GMT\')'
      );
    });
  });
});