simple-stub
To simply make stubs out of simple javascript objects. Use this stubs for testing in your favorite testing setup.
How to use
To create a stub object, create a object and call .createStub() with it as argument.
const obj = {
f: a => a + 5,
};
const stubObj = simpleStub.createStub(obj);If you now call stubObj.f(1) it will behave like obj.f(1) and return 6. The stub object will also save an array with "Call-Objects" for each function call which looks like this:
[{
"args": [1],
"err": undefined,
"result": 6
}]These "Call-Objects" can be found under the path stubObj.calls.{function}.
After you made your calls you can use this data to make your assertions.
it('calls the function 3 times with 1 2 and 3', () => {
const obj = {
f: a => a + 5,
};
const stubObj = simpleStub.createStub(obj);
stubObj.f(1);
stubObj.f(2);
stubObj.f(3);
expect(stubObj.calls.f.length).to.equal(3);
expect(stubObj.calls.f[0].args[0]).to.equal(1);
expect(stubObj.calls.f[0].result).to.equal(6);
expect(stubObj.calls.f[1].args[0]).to.equal(2);
expect(stubObj.calls.f[1].result).to.equal(7);
expect(stubObj.calls.f[2].args[0]).to.equal(3);
expect(stubObj.calls.f[2].result).to.equal(8);
});That's it.