UG blackbox tests

[jcnelson]

Blackbox tests for the UG

Need:

• create file
• create directory
• create nested files and directories
• unlink file
• unlink directory
• write local file sequentially
• write local file randomly
• append local file
• write remote file sequentially
• write remote file randomly
• append remote file
• read local file sequentially
• read local file randomly
• read remote file sequentially
• read remote file randomly
• truncate file

[jcnelson]

Some work is being done in UG/tests. We'll put low-level functional tests of individual or small groups of storage calls in UG/tests/functional, and more systemic tests in UG/tests/blackbox.

[jcnelson]

As of e3fe4b0, we now have functional tests for:

• mkdir
• readdir
• unlink
• open, read (offset,count) pairs, close
• open, write (offset,data) pairs, close
• create, write, close
• getxattr
• listxattr
• setxattr
• removexattr
• chownxattr
• chmodxattr

[jcnelson]

Add tests for parallel create (index-stress)