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How to test components with lightning testing service?
Lightning Testing Service guides you through broad testing coverage of a component’s expected behavior using the Jasmine or Mocha test frameworks. Create Aura component wrappers to use testing frameworks other than Jasmine or Mocha. Sorry, the document you are looking for doesn’t exist or could not be retrieved.
Are there test runners for Jasmine and Mocha?
There are test runners out there for Jasmine, and a very popular one is Karma by the Angular team. Karma also allows support for Mocha if you’d like to run your Mocha tests that way. In conclusion, the Jasmine framework has almost everything built into it including assertions/expectations and test double utilities (which come in the form of spies).
What’s the difference between Mocha and Jasmine JavaScript?
It can feel pretty overwhelming. This post is a quick overview of the differences between two popular JavaScript testing frameworks: Jasmine 2 and Mocha. We will also discuss commonly used libraries, Chai and Sinon, that are often used in conjunction with Jasmine and Mocha.
Is there a command line utility for Jasmine?
Jasmine however does not have a command line utility to run tests. There are test runners out there for Jasmine, and a very popular one is Karma by the Angular team. Karma also allows support for Mocha if you’d like to run your Mocha tests that way.
How to do unit testing in Salesforce Lightning?
In the Developer Console’s jasmineExampleTest.js tab, scroll down to the test suite starting on line 69. This test demonstrates invoking a client-side action and inspecting its behavior. One of the first things that happens in the test is a call to $T, the test helper object.
Which is the helper object in Lightning test?
One of the first things that happens in the test is a call to $T, the test helper object. In this case, you’re using $T to create an instance of the component c:egClientSideAction. $T is promise enabled, meaning the real work of your test is contained in the .then (component) method starting on line 72.
What should you do if you see lightning in a group?
Stay away from objects that conduct electricity (barbed wire fences, power lines, windmills, etc.). If you are in a group during a thunderstorm, separate from each other.
How to optimize the performance of Lightning components?
Optimize server round-trips: Before making a call to the server, make sure there’s no other option to obtain the data. When appropriate, consider passing data between components (using attributes, events, or methods) rather than retrieving the same data in different components.
How does lightning data service improve user interface consistency?
Lightning Data Service also improves user interface consistency: when a component updates a record, all the other components using that record are notified, and in most cases refreshed automatically. Check out the following components in DreamHouse to see the Lightning Data Service in action: PropertyMap, PropertySummary, MortgageCalculator.
How to use lazily instantiated components in Lightning?
For the right use cases, components can be hosted in specific areas in the Lightning Experience where they are lazily instantiated: You can use to lazily instantiate parts of the UI (see conditional rendering section). Some components (like and ) support lazy instantiation by default.