fix: increase jest test timeout to prevent frequent test failure

[ravinderk]

Feature Request

User Story

Currently, we are seeing on Travis that frontend test is failing and one of cause is timeout because on confirmation we are loading receipt via Ajax which takes more than 500ms few times. We can prevent the test from failing if we will increase time.

Visuals

ref: https://travis-ci.org/impress-org/give/jobs/510785400

Possible Solution

Set jest test interval to 500ms< for receipt paging tests.

Acceptance Criteria

• All frontend test is passing without any timeout.

[ravinderk]

I still see that the test is failing due to timeout. There was a performance issue with jest 24. currently, we are on 24.1.0. I will upgrade npm packages and then test again.

ref: jestjs/jest#7732

[ravinderk]

Note: As we know that tests only fails for confirmation page on which receipt load by ajax. I did not find a function to set timeout value more than 500ms, so test still fails randomly.

[ravinderk]

Closing this because it has been fixed.