Why Jasmine is called a "BDD" testing framework even if no "Given/When/Then" supported?

Question

In the introduction of Jasmine, it says:

Jasmine is a behavior-driven development framework for testing JavaScript code.

I read several articles of BDD, and seems we should use 'Given/When/Then' to define "Scenario"s, which is what "cucumber" does. But in Jasmine, I can't see any of such methods.

Can we still call Jasmine a "BDD" testing framework even if it doesn't have such concept?

Answer 1

Jasmine does not prevent you from using given-when-then, below is an example showing two ways you could use given-when-then whilst using Jasmine.

describe("Given a string containing 'foo'", function(){
    var someString;
    beforeEach(function() {
        someString = "foo";
    });
    describe("When I append 'bar'", function(){
        beforeEach(function() {
            someString += "bar";
        });
        it("Then the string is 'foobar'", function(){
            expect(someString).toBe("foobar");
        });
    });
    it("When I append 'baz' Then the string is 'foobaz'", function(){
        someString += "baz";
        expect(someString).toBe("foobaz");
    });
});

Find a style that works for you. You should ensure that the test description describes effectively what you are testing. You can use the given-when-then style sentence as a tool to ensure that your test description is precise about what is being tested.