run.bats(run --mount): skip if we're on overlay

If we're on overlayfs, we can't use the directory name that we'd like to
use as part of the test and expect things to succeed, even if we try to
work around it using fuse-overlayfs.

Signed-off-by: Nalin Dahyabhai <[email protected]>

Author: nalind

tests/run.bats

@@ -419,6 +419,12 @@ function configure_and_check_user() {
 	run_buildah from --quiet --pull=false $WITH_POLICY_JSON alpine
 	cid=$output
 	mkdir -p ${TEST_SCRATCH_DIR}/was:empty
+	if $(stat -f -c %T ${TEST_SCRATCH_DIR}/chroot/upperdir) = overlayfs; then
+		# we'll try to use fuse-overlayfs, which at least through 1.13
+		# can't accept ":" in layer locations, escaped or not, so bail
+		# now instead of breaking the whole thing
+		skip unable to test bind from an overlay location that includes colon characters
+	fi
 	# As a baseline, this should succeed.
 	run_buildah run --mount type=tmpfs,dst=/var/tmpfs-not-empty                                                            $cid touch /var/tmpfs-not-empty/testfile
 	# This should succeed, but the writes should effectively be discarded