diff mbox series

[PULL,07/69] iotests: Cache supported_formats()

Message ID 20191028121501.15279-8-mreitz@redhat.com
State New
Headers show
Series [PULL,01/69] iotests: Prefer null-co over null-aio | expand

Commit Message

Max Reitz Oct. 28, 2019, 12:13 p.m. UTC 
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20190917092004.999-8-mreitz@redhat.com
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/iotests.py | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
diff mbox series

Patch

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