jasmine-expect
Advanced tools
Readable tests.
The Jasmine testing framework from Pivotal Labs comes with this default set of matchers;
expect(fn).toThrow(e);
expect(instance).toBe(instance);
expect(mixed).toBeDefined();
expect(mixed).toBeFalsy();
expect(number).toBeGreaterThan(number);
expect(number).toBeLessThan(number);
expect(mixed).toBeNull();
expect(mixed).toBeTruthy();
expect(mixed).toBeUndefined();
expect(array).toContain(member);
expect(string).toContain(substring);
expect(mixed).toEqual(mixed);
expect(mixed).toMatch(pattern);
Using the default Matchers your tests and failure output might look something like this;
it('should expose the expected API', function() {
expect(typeof record.save).toEqual('function');
});
Expected "undefined" to equal "function"
it('should distribute evenly', function() {
expect(basket.items % 2 === 0).toEqual(true);
});
Expected false to equal true
Using Jasmine-Matchers the same tests and failure output can be written like this;
it('should expose the expected API', function() {
expect(record).toHaveMethod('save');
});
Expected member "save" of { save : undefined } to be function.
it('should distribute evenly', function() {
expect(basket).toHaveEvenNumber('items');
});
Expected member "items" of { items : 25 } to be even number.
npm install jasmine-expect --save-dev
bower install jasmine-expect --save-dev
Downloads are available on the releases page.
Include Jasmine Matchers after Jasmine but before your tests.
<script src="/path/to/jasmine-matchers.js"></script>
Integration is easy with the karma-jasmine-matchers plugin.
When using jasmine-node 1.x, provide the path to where Jasmine Matchers is installed as the value for --requireJsSetup.
jasmine-node --requireJsSetup node_modules/jasmine-expect/index.js test
jasmine-node 2.x has no such hooks that I'm aware of for loading helpers, in this case the following call is needed before the first test in your suite.
require('jasmine-expect');
Jasmine-Matchers-Snippets can be installed with Package Control to ease development with Jasmine Matchers in Sublime Text.
Plugin for Tern to auto-complete matchers in supported editors.
Jasmine Matchers can be used with Facebook's Jest.
// package.json
"unmockedModulePathPatterns": [
"jasmine-expect"
],
// some test
import JasmineExpect from 'jasmine-expect';
// ...
expect(someValue).toBeArrayOfObjects();
Jasmine-Matchers is tested on Travis CI and Sauce Labs against the following environments.
FAQs
Write Beautiful Specs with Custom Matchers
The npm package jasmine-expect receives a total of 30,360 weekly downloads. As such, jasmine-expect popularity was classified as popular.
We found that jasmine-expect demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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