Unit test for get_locale()

[realloc]

I wrote some tests for get_locale().

NB: The part from line 44 to 51 is hard to test since WP_LANG is predefined as an empty string in wp-tests-config.php

[realloc]

Unit tests for get_locale()

[boonebgorges]

Thanks! I'm going to break it up into separate tests and add some tests for the multisite stuff.

For future reference, I don't think there's any reason for a @ticket annotation if the only purpose of the ticket was to add unit tests. In other words: @ticket is appropriate when referring to a bug that the test describes.

[boonebgorges]

In 36740:

Add tests for get_locale().

Props realloc.
Fixes #35965.

[boonebgorges]

In 36741:

Tests: Don't modify global state before checking whether to skip get_locale() tests.

Introduced in [36740].

Props ocean90.
See #35965.