[PULL 5/8] iotests/303: Check for zstd support

[Hanna Reitz]

303 runs two test cases, one of which requires zstd support.
Unfortunately, given that this is not a unittest-style test, we cannot
easily skip that single case, and instead can only skip the whole test.

(Alternatively, we could split this test into a zlib and a zstd part,
but that seems excessive, given that this test is not in auto and thus
likely only run by developers who have zstd support compiled in.)

Fixes: 677e0bae686e7c670a71d1f ("iotest 303: explicit compression type")
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <v.sementsov-og@mail.ru>
Message-Id: <20220323105522.53660-4-hreitz@redhat.com>
---
 tests/qemu-iotests/303 | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/303 b/tests/qemu-iotests/303
index 93aa5ce9b7..40e947f26c 100755
--- a/tests/qemu-iotests/303
+++ b/tests/qemu-iotests/303
@@ -21,10 +21,12 @@
 
 import iotests
 import subprocess
-from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io
+from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io, \
+        verify_qcow2_zstd_compression
 
 iotests.script_initialize(supported_fmts=['qcow2'],
                           unsupported_imgopts=['refcount_bits', 'compat'])
+verify_qcow2_zstd_compression()
 
 disk = file_path('disk')
 chunk = 1024 * 1024
-- 
2.35.1