qemu-iotests: Improve and make use of QMPTestCase.wait_until_completed()

This eliminates code duplication.
Signed-off-by: NFam Zheng <famz@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

tests/qemu-iotests/030

@@ -50,15 +50,7 @@ class TestSingleDrive(iotests.QMPTestCase):
         result = self.vm.qmp('block-stream', device='drive0')
         self.assert_qmp(result, 'return', {})
 
-        completed = False
-        while not completed:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_COMPLETED':
-                    self.assert_qmp(event, 'data/type', 'stream')
-                    self.assert_qmp(event, 'data/device', 'drive0')
-                    self.assert_qmp(event, 'data/offset', self.image_len)
-                    self.assert_qmp(event, 'data/len', self.image_len)
-                    completed = True
+        self.wait_until_completed()
 
         self.assert_no_active_block_jobs()
         self.vm.shutdown()
@@ -89,15 +81,7 @@ class TestSingleDrive(iotests.QMPTestCase):
         self.assert_qmp(result, 'return', {})
 
         self.vm.resume_drive('drive0')
-        completed = False
-        while not completed:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_COMPLETED':
-                    self.assert_qmp(event, 'data/type', 'stream')
-                    self.assert_qmp(event, 'data/device', 'drive0')
-                    self.assert_qmp(event, 'data/offset', self.image_len)
-                    self.assert_qmp(event, 'data/len', self.image_len)
-                    completed = True
+        self.wait_until_completed()
 
         self.assert_no_active_block_jobs()
         self.vm.shutdown()
@@ -112,15 +96,7 @@ class TestSingleDrive(iotests.QMPTestCase):
         result = self.vm.qmp('block-stream', device='drive0', base=mid_img)
         self.assert_qmp(result, 'return', {})
 
-        completed = False
-        while not completed:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_COMPLETED':
-                    self.assert_qmp(event, 'data/type', 'stream')
-                    self.assert_qmp(event, 'data/device', 'drive0')
-                    self.assert_qmp(event, 'data/offset', self.image_len)
-                    self.assert_qmp(event, 'data/len', self.image_len)
-                    completed = True
+        self.wait_until_completed()
 
         self.assert_no_active_block_jobs()
         self.vm.shutdown()
@@ -152,15 +128,7 @@ class TestSmallerBackingFile(iotests.QMPTestCase):
         result = self.vm.qmp('block-stream', device='drive0')
         self.assert_qmp(result, 'return', {})
 
-        completed = False
-        while not completed:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_COMPLETED':
-                    self.assert_qmp(event, 'data/type', 'stream')
-                    self.assert_qmp(event, 'data/device', 'drive0')
-                    self.assert_qmp(event, 'data/offset', self.image_len)
-                    self.assert_qmp(event, 'data/len', self.image_len)
-                    completed = True
+        self.wait_until_completed()
 
         self.assert_no_active_block_jobs()
         self.vm.shutdown()
@@ -442,15 +410,7 @@ class TestSetSpeed(iotests.QMPTestCase):
         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
         self.assert_qmp(result, 'return', {})
 
-        completed = False
-        while not completed:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_COMPLETED':
-                    self.assert_qmp(event, 'data/type', 'stream')
-                    self.assert_qmp(event, 'data/device', 'drive0')
-                    self.assert_qmp(event, 'data/offset', self.image_len)
-                    self.assert_qmp(event, 'data/len', self.image_len)
-                    completed = True
+        self.wait_until_completed()
 
         self.assert_no_active_block_jobs()
 

tests/qemu-iotests/056

@@ -57,14 +57,7 @@ class TestSyncModesNoneAndTop(iotests.QMPTestCase):
                              format=iotests.imgfmt, target=target_img)
         self.assert_qmp(result, 'return', {})
 
-        # Custom completed check as we are not copying all data.
-        completed = False
-        while not completed:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_COMPLETED':
-                    self.assert_qmp(event, 'data/device', 'drive0')
-                    self.assert_qmp_absent(event, 'data/error')
-                    completed = True
+        self.wait_until_completed(check_offset=False)
 
         self.assert_no_active_block_jobs()
         self.vm.shutdown()

tests/qemu-iotests/iotests.py

@@ -257,7 +257,7 @@ class QMPTestCase(unittest.TestCase):
         self.assert_no_active_block_jobs()
         return result
 
-    def wait_until_completed(self, drive='drive0'):
+    def wait_until_completed(self, drive='drive0', check_offset=True):
         '''Wait for a block job to finish, returning the event'''
         completed = False
         while not completed:
@@ -265,7 +265,8 @@ class QMPTestCase(unittest.TestCase):
                 if event['event'] == 'BLOCK_JOB_COMPLETED':
                     self.assert_qmp(event, 'data/device', drive)
                     self.assert_qmp_absent(event, 'data/error')
-                    self.assert_qmp(event, 'data/offset', self.image_len)
+                    if check_offset:
+                        self.assert_qmp(event, 'data/offset', self.image_len)
                     self.assert_qmp(event, 'data/len', self.image_len)
                     completed = True