Mocha

Question 0

What directory does Mocha look for tests in?

Answer 0

/test/

Question 1

Run mocha tests. What is the default timeout and how might you change it?

Answer 1

mocha

2 seconds is the default timeout, change via:

# 3 seconds
mocha --timeout 3000

Question 2

What is Mocha and what isn’t it?

Answer 2

Mocha is a test framework. It cares about the structure of tests but not tests themselves. It is typically coupled with an assertion library.

Question 3

Break up modules and methods in Mocha.

Answer 3

describe("module name", function() {
    describe(".methodName()", function() {
        ...
    });
});

Question 4

Run particular Mocha tests on a method/module

Answer 4

describe("module name", function() {
    describe(".methodName()", function() {
        it("what we are testing", function () {
            // assertion
        });
    });
});

Question 5

Run function before or after a describe(), or before or after every it():

Answer 5

Before or after describe()
describe(…
before(function() { … });
after(function() { … });

Before or after every it()
describe(...
    beforeEach(function() { ... });
    afterEach(function() { ... });
    it(...);