Function expectEquivalentMethods

test/app/lib/world/vector.spec.js:39–44

(method, arg)

  it('has class methods equivalent to the instance methods', function() {
    const expectEquivalentMethods = function(method, arg) {
      const v = new Vector(7, 7);
      const classResult = Vector[method](v, arg);
      const instanceResult = v[method](arg);
      return expect(classResult).toEqual(instanceResult);
    };

    expectEquivalentMethods('add', new Vector(1, 1));
    expectEquivalentMethods('subtract', new Vector(3, 3));