[PATCH 1/2] iotests/065: Check for zstd support

[Hanna Reitz <hreitz@redhat.com>]

Some test cases run in iotest 065 require zstd support.  Skip them if
qemu-img reports it not to be available.

Reported-by: Thomas Huth <thuth@redhat.com>
Fixes: 12a936171d71f839dc907ff ("iotest 065: explicit compression type")
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
---
 tests/qemu-iotests/065 | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/tests/qemu-iotests/065 b/tests/qemu-iotests/065
index f7c1b68dad..b68df84642 100755
--- a/tests/qemu-iotests/065
+++ b/tests/qemu-iotests/065
@@ -24,7 +24,7 @@ import os
 import re
 import json
 import iotests
-from iotests import qemu_img, qemu_img_pipe
+from iotests import qemu_img_pipe, qemu_img_pipe_and_status
 import unittest
 
 test_img = os.path.join(iotests.test_dir, 'test.img')
@@ -35,8 +35,13 @@ class TestImageInfoSpecific(iotests.QMPTestCase):
     def setUp(self):
         if self.img_options is None:
             self.skipTest('Skipping abstract test class')
-        qemu_img('create', '-f', iotests.imgfmt, '-o', self.img_options,
-                 test_img, '128K')
+        output, status = qemu_img_pipe_and_status('create',
+                                                  '-f', iotests.imgfmt,
+                                                  '-o', self.img_options,
+                                                  test_img, '128K')
+        if status == 1 and \
+                "'compression-type' does not accept value 'zstd'" in output:
+            self.case_skip('zstd compression not supported')
 
     def tearDown(self):
         os.remove(test_img)
-- 
2.34.1