A BDD (RSpec-like) testing library for Java [closed]

Question

Now that we have lambda expression it should be possible to have a Java unit testing library that offers a syntax similar to that of (say) RSpec. I imagine something like:

  describe("some behavior", () -> {
    beforeEach(() -> {
      // do some initialization...
    });
    describe("sub behavior 1", () -> {
      // some assertions ...
    });
    describe("sub behavior 2", () -> {
      // some assertions ....
    });
  });

Is there any library like that out there?

Answer 1

Afaik, Oleaster is a lib that does that.

Oleaster allows you to write JUnit tests like you would write Jasmine tests.

An Oleaster JUnit test looks like this:

@RunWith(OleasterRunner.class)
public class OleasterIntroductionTest {{
    describe("A suite", () -> {
        it("contains a spec with an expectation", () -> {
            expect(40 + 2).toEqual(42);
        });
    });
}}

Answer 2

Please consider spock, it was inspired from rspec and others.

It Just reached 1.0.

From the page...

In Behavior Driven Development, customer-facing features (called stories) are described in a given-when-then format. Spock directly supports this style of specification with the given: label:

> given: "an empty bank account" // ...
> 
> when: "the account is credited $10" // ...
> 
> then: "the account's balance is $10" // ... As noted