Sergey Biryukov 5730b983b8 Tests: Require imagejpeg() function in some more media tests.
This outputs a proper message if the requirement is not met, instead of an obscure PHP error further in the test.

These tests rely on multiple resized copies of a test JPEG image being generated and available.

Follow-up to [49010], [49024], [49025].

See #50639, #50640.

git-svn-id: https://develop.svn.wordpress.org/trunk@49045 602fd350-edb4-49c9-b593-d223f7449a82
2020-09-25 01:43:19 +00:00
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2020-06-26 13:31:11 +00:00