Jest snapshot fails every test run
crobinson42 opened this issue · comments
The default date props is different on every test run which causes the Jest snapshots to fail - any recommendation on how to handle this scenario?
First glance solution feels hacky: <DateTimePicker date={env.__TEST__ ? new Date(testDate) : undefined} />
Hi @crobinson42 ouch, you're right, it does feel hacky but I'm not aware of other workarounds without making breaking changes (other than creating weird props like useDefaultInitialDate={false}).
Do you have any ideas?
My solution, for now, is to over-ride the Date constructor in my setupTests.js file that is ran before all tests. This is also hacky :-/ I did find the mockdate package which essentially does the same thing and it has a lot of downloads which indicates this is a popular solution.
Date = class extends Date {
constructor(date) {
if (date) {
return super(date);
}
return new Date('2018-09-20T23:00:00Z');
}
}
Gotcha, thanks for answering. If you find any other workarounds feel free to add them here (I'm adding this issue to the README.md).
Hi @mmazzarolo, How do I deactivate weekends in the datepicker? I appreciate that you can help me
Adding Date.now = jest.fn(() => 1482363367071);
beforeEach of my test solved this for me.