chore(test_helpers): enable DRAG_DELAY for tests and complete event defaults

- configure DRAG_DELAY for tests to the library default of 100ms in order totest delayed dragging.
- Ensure Date.now is updated on waitForDragDelay so that time comparisons can be used to test for drag delay constraints

Author: randym

scripts/test/helpers/constants.js

@@ -11,6 +11,8 @@ export const defaultMouseEventOptions = {
   button: 0,
   clientX: 0,
   clientY: 0,
+  pageX: 0,
+  pageY: 0,
 };
 
-export const DRAG_DELAY = 0;
+export const DRAG_DELAY = 100;

scripts/test/helpers/sensor.js

@@ -2,7 +2,12 @@ import {DRAG_DELAY, defaultTouchEventOptions, defaultMouseEventOptions} from './
 import {triggerEvent} from './event';
 
 export function waitForDragDelay(dragDelay = DRAG_DELAY) {
+  const next = Date.now() + dragDelay + 1;
+  const dateMock = jest.spyOn(Date, 'now').mockImplementation(() => {
+    return next;
+  });
   jest.runTimersToTime(dragDelay + 1);
+  dateMock.mockRestore();
 }
 
 export function clickMouse(element, options = {}) {