[PATCH v3 12/14] tests: fix check for sudo access in LUKS I/O test

["Daniel P. Berrangé" <berrange@redhat.com>]

The test did not cope with the possibility that 'sudo' was not installed
at all, merely that it was not configured. This broke tests in any CI
env which lacks 'sudo'.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 tests/qemu-iotests/149 | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/tests/qemu-iotests/149 b/tests/qemu-iotests/149
index c13343d7ef..6dff39a28a 100755
--- a/tests/qemu-iotests/149
+++ b/tests/qemu-iotests/149
@@ -95,11 +95,14 @@ def verify_passwordless_sudo():
 
     args = ["sudo", "-n", "/bin/true"]
 
-    proc = subprocess.Popen(args,
-                            stdin=subprocess.PIPE,
-                            stdout=subprocess.PIPE,
-                            stderr=subprocess.STDOUT,
-                            universal_newlines=True)
+    try:
+        proc = subprocess.Popen(args,
+                                stdin=subprocess.PIPE,
+                                stdout=subprocess.PIPE,
+                                stderr=subprocess.STDOUT,
+                                universal_newlines=True)
+    except FileNotFoundError as e:
+        iotests.notrun('requires sudo binary: %s' % e)
 
     msg = proc.communicate()[0]
 
-- 
2.52.0