FileUnmanagedCopyTest::testNormal in core/modules/simpletest/tests/file.test
Copy a normal file.
FileUnmanagedCopyTest::testOverwriteSelf in core/modules/simpletest/tests/file.test
Copy a file onto itself.
FileUnmanagedMoveTest::testNormal in core/modules/simpletest/tests/file.test
Move a normal file.
FileUnmanagedSaveDataTest::testFileSaveData in core/modules/simpletest/tests/file.test
Test the file_unmanaged_save_data() function.