Add test for Pager.page

[lacinoire]

Hey 😊 I want to contribute the following test:

Test that a java.util.NoSuchElementException is thrown when page is called with the parameter pageNumber = -1555957071. This tests the method Pager.page. This test is based on the test testGetEpicDiscussionsByPager.

Curious to hear what you think!

Also, is the description I provided of the test is helping you to answer to this pull request? Why (not)?

(I wrote this test as part of a research study at TU Delft. Find out more)