iotests: Add more "skip_if_unsupported" statements to the python tests

The python code already contains a possibility to skip tests if the
corresponding driver is not available in the qemu binary - use it
in more spots to avoid that the tests are failing if the driver has
been disabled.

While we're at it, we can now also remove some of the old checks that
were using iotests.supports_quorum() - and which were apparently not
working as expected since the tests aborted instead of being skipped
when "quorum" was missing in the QEMU binary.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

tests/qemu-iotests/030

@@ -530,6 +530,7 @@ class TestQuorum(iotests.QMPTestCase):
     children = []
     backing = []
 
+    @iotests.skip_if_unsupported(['quorum'])
     def setUp(self):
         opts = ['driver=quorum', 'vote-threshold=2']
 
@@ -560,9 +561,6 @@ class TestQuorum(iotests.QMPTestCase):
             os.remove(img)
 
     def test_stream_quorum(self):
-        if not iotests.supports_quorum():
-            return
-
         self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]),
                             qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]),
                             'image file map matches backing file before streaming')

tests/qemu-iotests/040

@@ -106,6 +106,7 @@ class TestSingleDrive(ImageCommitTestCase):
         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
 
+    @iotests.skip_if_unsupported(['throttle'])
     def test_commit_with_filter_and_quit(self):
         result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg')
         self.assert_qmp(result, 'return', {})
@@ -125,6 +126,7 @@ class TestSingleDrive(ImageCommitTestCase):
         self.has_quit = True
 
     # Same as above, but this time we add the filter after starting the job
+    @iotests.skip_if_unsupported(['throttle'])
     def test_commit_plus_filter_and_quit(self):
         result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg')
         self.assert_qmp(result, 'return', {})

tests/qemu-iotests/041

@@ -871,6 +871,7 @@ class TestRepairQuorum(iotests.QMPTestCase):
     image_len = 1 * 1024 * 1024 # MB
     IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ]
 
+    @iotests.skip_if_unsupported(['quorum'])
     def setUp(self):
         self.vm = iotests.VM()
 
@@ -891,9 +892,8 @@ class TestRepairQuorum(iotests.QMPTestCase):
         #assemble the quorum block device from the individual files
         args = { "driver": "quorum", "node-name": "quorum0",
                  "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] }
-        if iotests.supports_quorum():
-            result = self.vm.qmp("blockdev-add", **args)
-            self.assert_qmp(result, 'return', {})
+        result = self.vm.qmp("blockdev-add", **args)
+        self.assert_qmp(result, 'return', {})
 
 
     def tearDown(self):
@@ -906,9 +906,6 @@ class TestRepairQuorum(iotests.QMPTestCase):
                 pass
 
     def test_complete(self):
-        if not iotests.supports_quorum():
-            return
-
         self.assert_no_active_block_jobs()
 
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
@@ -925,9 +922,6 @@ class TestRepairQuorum(iotests.QMPTestCase):
                         'target image does not match source after mirroring')
 
     def test_cancel(self):
-        if not iotests.supports_quorum():
-            return
-
         self.assert_no_active_block_jobs()
 
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
@@ -942,9 +936,6 @@ class TestRepairQuorum(iotests.QMPTestCase):
         self.vm.shutdown()
 
     def test_cancel_after_ready(self):
-        if not iotests.supports_quorum():
-            return
-
         self.assert_no_active_block_jobs()
 
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
@@ -961,9 +952,6 @@ class TestRepairQuorum(iotests.QMPTestCase):
                         'target image does not match source after mirroring')
 
     def test_pause(self):
-        if not iotests.supports_quorum():
-            return
-
         self.assert_no_active_block_jobs()
 
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
@@ -989,9 +977,6 @@ class TestRepairQuorum(iotests.QMPTestCase):
                         'target image does not match source after mirroring')
 
     def test_medium_not_found(self):
-        if not iotests.supports_quorum():
-            return
-
         if iotests.qemu_default_machine != 'pc':
             return
 
@@ -1003,19 +988,13 @@ class TestRepairQuorum(iotests.QMPTestCase):
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_image_not_found(self):
-        if not iotests.supports_quorum():
-            return
-
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
                              sync='full', node_name='repair0', replaces='img1',
                              mode='existing', target=quorum_repair_img,
                              format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_device_not_found(self):
-        if not iotests.supports_quorum():
-            return
-
         result = self.vm.qmp('drive-mirror', job_id='job0',
                              device='nonexistent', sync='full',
                              node_name='repair0',
@@ -1024,37 +1003,25 @@ class TestRepairQuorum(iotests.QMPTestCase):
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_wrong_sync_mode(self):
-        if not iotests.supports_quorum():
-            return
-
         result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0',
                              node_name='repair0',
                              replaces='img1',
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_no_node_name(self):
-        if not iotests.supports_quorum():
-            return
-
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
                              sync='full', replaces='img1',
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_nonexistent_replaces(self):
-        if not iotests.supports_quorum():
-            return
-
         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
                              sync='full', node_name='repair0', replaces='img77',
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_after_a_quorum_snapshot(self):
-        if not iotests.supports_quorum():
-            return
-
         result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1',
                              snapshot_file=quorum_snapshot_file,
                              snapshot_node_name="snap1");

tests/qemu-iotests/245

@@ -478,6 +478,7 @@ class TestBlockdevReopen(iotests.QMPTestCase):
     # This test verifies that we can't change the children of a block
     # device during a reopen operation in a way that would create
     # cycles in the node graph
+    @iotests.skip_if_unsupported(['blkverify'])
     def test_graph_cycles(self):
         opts = []
 
@@ -534,6 +535,7 @@ class TestBlockdevReopen(iotests.QMPTestCase):
         self.assert_qmp(result, 'return', {})
 
     # Misc reopen tests with different block drivers
+    @iotests.skip_if_unsupported(['quorum', 'throttle'])
     def test_misc_drivers(self):
         ####################
         ###### quorum ######