diffs.fixture.js

'use strict';

// assert is used because unexpected doesn't use mocha's diffs.
var assert = require('assert');
var fs = require('fs');
var cssin = fs.readFileSync('test/integration/fixtures/diffs/diffs.css.in', 'ascii');
var cssout = fs.readFileSync('test/integration/fixtures/diffs/diffs.css.out', 'ascii');

describe('diffs', function () {
  var actual, expected;

  it('should display a diff for small strings', function () {
    actual = 'foo rar baz';
    expected = 'foo bar baz';
    assert.strictEqual(actual, expected);
  });

  it('should display a diff of canonicalized objects', function () {
    actual = { name: 'travis j', age: 23 };
    expected = { age: 23, name: 'travis' };
    assert.deepStrictEqual(actual, expected);
  });

  it('should display a diff for medium strings', function () {
    actual = 'foo bar baz\nfoo rar baz\nfoo bar raz';
    expected = 'foo bar baz\nfoo bar baz\nfoo bar baz';
    assert.strictEqual(actual, expected);
  });

  it('should display a diff for entire object dumps', function () {
    actual = {
      name: 'joel',
      age: 30,
      address: {
        city: 'new york',
        country: 'usa'
      }
    };
    expected = {
      name: 'joe',
      age: 30,
      address: {
        city: 'new york',
        country: 'us'
      }
    };
    assert.deepStrictEqual(actual, expected);
  });

  it('should display a diff for multi-line strings', function () {
    actual = 'one two three\nfour zzzz six\nseven eight nine';
    expected = 'one two three\nfour five six\nseven eight nine';
    assert.strictEqual(actual, expected);
  });

  it('should display a diff for entire object dumps', function () {
    actual = {
      name: 'joel',
      age: 30,
      address: {
        city: 'new york',
        country: 'usa'
      }
    };
    expected = {
      name: 'joe',
      age: 30,
      address: {
        city: 'new york',
        country: 'us'
      }
    };
    assert.deepStrictEqual(actual, expected);
  });

  it('should display a full-comparison with escaped special characters', function () {
    actual = 'one\ttab\ntwo\t\t\ttabs';
    expected = 'one\ttab\ntwo\t\ttabs';
    assert.strictEqual(actual, expected);
  });

  it('should display a word diff for large strings', function () {
    assert.strictEqual(cssin, cssout);
  });

  it('should work with objects', function () {
    actual = {
      name: 'tobi',
      species: 'ferret',
      color: 'white',
      age: 2
    };

    expected = {
      name: 'loki',
      species: 'ferret',
      color: 'brown',
      age: 2
    };

    assert.deepStrictEqual(actual, expected);
  });

  it('should show value diffs and not be affected by commas', function () {
    actual = { a: 123 };
    expected = { a: 123, b: 456 };
    assert.deepStrictEqual(actual, expected);
  });

  it('should display diff by data and not like an objects', function () {
    actual = Buffer.from([0x01]);
    expected = Buffer.from([0x02]);
    assert.deepStrictEqual(actual, expected);
  });
});