FileValidatorTest::testFileValidateImageResolution in modules/simpletest/tests/file.test

This ensures the resolution of a specific file is within bounds. The image will be resized if it's too large.

image_get_info in includes/image.inc

Gets details about an image.

image_load in includes/image.inc

Loads an image file and returns an image object.

system_image_toolkit_settings in modules/system/system.admin.inc

Form builder; Configure site image toolkit usage.

UserPictureTestCase::testWithGDinvalidDimension in modules/user/tests/user.test

Do the test: GD Toolkit is installed Picture has invalid dimension

UserPictureTestCase::testWithGDinvalidSize in modules/user/tests/user.test

Do the test: GD Toolkit is installed Picture has invalid size

UserPictureTestCase::testWithoutGDinvalidDimension in modules/user/tests/user.test

Do the test: GD Toolkit is not installed Picture has invalid size

UserPictureTestCase::testWithoutGDinvalidSize in modules/user/tests/user.test

Do the test: GD Toolkit is not installed Picture has invalid size