Jasmine Extra Matchers

A set of Jasmine 2.x matchers

Table of contents

• Installation and usage
  • Bower
  • NPM
  • Karma
• Matchers
  • toBeInstanceOf
  • toBeInfinity
  • hasOwnProperty
  • toBeEven
  • toBeOdd
  • toBeNumeric
  • toBeInteger
  • toBeFloat
  • toBePositive
  • toBeNegative

Installation and usage

Bower

bower install jasmine-extra-matchers

<script src="/bower_components/jasmine-extra-matchers/jasmine-extra-matchers.js"></script>

it('should be a Backbone.Model', function() {
    expect(value).toBeInstanceOf(Backbone.Model)
});

NPM

npm install jasmine-extra-matchers --save-dev

require('jasmine-extra-matchers');

it('should be infinity', function() {
  expect(value).toBeInfinity()
});

Karma

Use karma-jasmine-extra-matchers

Matchers

toBeInstanceOf

Checks whether a value is the instance of type

expect(value).toBeInstanceOf(Backbone.Model)
expect(value).not.toBeInstanceOf(Backbone.Model)

toBeInfinity

Checks whether a value is infinity

expect(Infinity).toBeInfinity()
expect(0).not.toBeInfinity()

hasOwnProperty

Checks whether a value has own property

expect(value).hasOwnProperty('type')
expect(value).not.hasOwnProperty('type')

toBeEven

Checks whether the value is an even number

expect(2).toBeEven()
expect(3).not.toBeEven()

toBeOdd

Checks whether the value is an odd number

expect(3).toBeOdd()
expect(2).not.toBeOdd()

toBeNumeric

Checks whether the value contains a numeric value, regardless of its type. It can be a string containing a numeric value, exponential notation, a Number object, etc.

expect('14').toBeNumeric()
expect('fourteen').not.toBeNumeric()

toBeInteger

Checks whether the value is a numeric integer. A numeric value can be a string containing a number, a Number object, etc.

expect(18).toBeInteger()
expect('18').toBeInteger()
expect(2.5).not.toBeInteger()
expect(-1).toBeInteger()

toBeFloat

Checks whether the value is a "float"

expect(1.1).toBeFloat()
expect(1).not.toBeFloat()
expect(1.0).not.toBeFloat()
expect('2.15').toBeFloat()

toBePositive

Checks whether the value is a positive number

expect(21).toBePositive()
expect(-1).not.toBePositive()

toBeNegative

Checks whether the value is a negative number

expect(-2).toBeNegative()
expect(5).not.toBeNegative()