How to use the selenium-webdriver.promise.consume function in selenium-webdriver

it('up', function* () {
		promise.consume(_testShiftUp, null, 'k');
	});

it('delete bound', function* () {
		promise.consume(_deleteBound, null, 'd');
	});

it('paste into bound by p', function* () {
		promise.consume(_pasteIntoBound, null, 'p');
	});

it('right', function* () {
		promise.consume(_testRight, null, 'l');
	});

it('down ctrl n', function* () {
		promise.consume(_testShiftDown, null, ctrln);
	});

it('paste into bound linewise by p', function* () {
		promise.consume(_pasteLinewiseDataIntoBound, null, 'p');
	});

it('yank line bound y', function* () {
		promise.consume(_yankLineBound, null, 'Y');
	});

it('change line bound', function* () {
		promise.consume(_changeLineBound, null, 'c');
	});

const runTest = (resolve, reject) => {
            try {
                if (isAsync) {
                    fn.call(this, err => err ? reject(err) : resolve());
                } else if (isGenerator) {
                    resolve(promise.consume(fn, this));
                } else {
                    resolve(fn.call(this));
                }
            } catch (ex) {
                reject(ex);
            }
        };