tree 407efdba8744978388eacbb09a2bdf0b3272f6f6
parent 60c38c9764f9d0463af45e13412f13a33cbb37ed
author Stephen Warren <swarren@wwwdotorg.org> 1393737480 -0700
committer Tom Rini <trini@ti.com> 1394207946 -0500

unit-test: make "test -e" test independent of $CWD

The unit-test for hush's "test -e" currently relies upon being run in
the U-Boot build directory, because it tests for the existence of a file
that exists in that directory.

Fix this by explicitly creating the file we use for the existence test,
and deleting it afterwards so that multiple successive unit-test
invocations succeed. This required adding an os.c function to erase
files.

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>