ImageAdminStylesUnitTest::testDefaultStyle in core/modules/image/tests/image.test

Test to override, edit, then revert a style.

ImageAdminStylesUnitTest::testStyle in core/modules/image/tests/image.test

General test to add a style, add/remove/edit effects to it, then delete it.

ImageDimensionsUnitTest::testImageDimensions in core/modules/image/tests/image.test

Test styled image dimensions cumulatively.

ImageStyleFlushTest::testFlush in core/modules/image/tests/image.test

General test to flush a style.

image_image_effect_info in core/modules/image/image.effects.inc

Implements hook_image_effect_info().

image_update_1000 in core/modules/image/image.install

Provide default image styles for the Image module.