Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: John Snow <js...@redhat.com>
Message-id: 20190917092004.999-8-mre...@redhat.com
Reviewed-by: Andrey Shinkevich <andrey.shinkev...@virtuozzo.com>
Signed-off-by: Max Reitz <mre...@redhat.com>
---
tests/qemu-iotests/iotests.py | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 936d33df61..a4a2238b42 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -921,9 +921,17 @@ def qemu_pipe(*args):
def supported_formats(read_only=False):
'''Set 'read_only' to True to check ro-whitelist
Otherwise, rw-whitelist is checked'''
- format_message = qemu_pipe("-drive", "format=help")
- line = 1 if read_only else 0
- return format_message.splitlines()[line].split(":")[1].split()
+
+ if not hasattr(supported_formats, "formats"):
+ supported_formats.formats = {}
+
+ if read_only not in supported_formats.formats:
+ format_message = qemu_pipe("-drive", "format=help")
+ line = 1 if read_only else 0
+ supported_formats.formats[read_only] = \
+ format_message.splitlines()[line].split(":")[1].split()
+
+ return supported_formats.formats[read_only]
def skip_if_unsupported(required_formats=[], read_only=False):
'''Skip Test Decorator
--
2.21.0
