iotests/287: Clean up subshell test image

287 creates an image in a subshell (thanks to the pipe) to see whether
that is possible with compression_type=zstd.  If _make_test_img were to
modify any global state, this global state would then be lost before we
could cleanup the image.

When using FUSE as the test protocol, this global state is important, so
clean up the image before the state is lost.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201027190600.192171-16-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/tests/qemu-iotests/287 b/tests/qemu-iotests/287
index f98a4cadc1283ec6694ef0745db56f2ea9549678..036cc09e82b72404ddae4023e52be15e9a5c164d 100755 (executable)
--- a/tests/qemu-iotests/287
+++ b/tests/qemu-iotests/287
@@ -51,8 +51,8 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 CLUSTER_SIZE=65536
 
 # Check if we can run this test.
-if IMGOPTS='compression_type=zstd' _make_test_img 64M |
-    grep "Invalid parameter 'zstd'"; then
+output=$(_make_test_img -o 'compression_type=zstd' 64M; _cleanup_test_img)
+if echo "$output" | grep -q "Invalid parameter 'zstd'"; then
     _notrun "ZSTD is disabled"
 fi