Library to test functions in Typescript (inspired by Sinon)

Installation

npm install ts-test-functions

Usage

Typescript

import observer from 'ts-test-functions'


describe("observer class", () => {
    let obs1:observer;
    let f: Function;
    beforeEach(() => {
        obs1 = new observer();
        f = obs1.fake(42);
    });
    describe("fake", () => {
        it("should return a callable", () => {
            assert(f instanceof Function);
        });
        it("callable should return specified value", () => {
            assert(f() == 42);
        });
    });
    describe("callcount", () => {
        it("should return the number of calls", () => {
            assert(obs1.callcount() == 0);
            f();
            f();
            assert(obs1.callcount() == 2);
        });
    });
    describe("calledoncewith", () => {
        it("should return true if called once with specified arguments", () => {
            f(1, 2, 3);
            assert(obs1.calledoncewith(1, 2, 3));
        });
    });
    describe("call", () => {
        it("should return number of calls", () => {
            f(1);
            assert.deepEqual(obs1.call(0), [1]);
        });
    });
});