[Qemu-block] [PATCH 14/17] iotests: add VM.test_launcn()

[Vladimir Sementsov-Ogievskiy]

Test vm can launch and print output in case of fail. This function is
needed for testing erroneous cases

Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
 tests/qemu-iotests/iotests.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 737da20..c879e88 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -226,6 +226,25 @@ class VM(object):
             os.remove(self._monitor_path)
             raise
 
+    def test_launch(self):
+        '''Launch the VM, an error is expected'''
+        try:
+            self.launch()
+        except:
+            self._popen.wait()
+            print "Test launch failed: %d" % self._popen.returncode
+            print "--- qemu output ---"
+            for line in open(self._qemu_log_path):
+                #filter qtest comments
+                if not "] OPENED" in line:
+                    print line
+            print "--- end qemu output ---"
+            return False
+
+        print "Tast launch successed!"
+        self.shutdown()
+        return True
+
     def shutdown(self):
         '''Terminate the VM and clean up'''
         if not self._popen is None:
-- 
1.8.3.1