What is the Jasmine test framework?

Jasmine is a JavaScript testing framework that supports a software development practice called Behaviour-Driven Development, or BDD for short. It’s a specific flavour of Test-Driven Development (TDD).

Jasmine, and BDD in general, attempts to describe tests in a human-readable format so that non-technical people can understand what is being tested. However, even if you are technical reading tests in BDD format makes it a lot easier to understand what’s going on.

For example, to test the below function:

function helloWorld() {
  return 'Hello world!';
}

describe('Hello world', () => { 
  it('says hello', () => { 
    expect(helloWorld()) 
        .toEqual('Hello world!'); 
  });
});

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