iotests/118: Add -blockdev based tests

The code path for -device drive=<node-name> or without a drive=...
option for empty drives, which is supposed to be used with -blockdev
differs enough from the -drive based path with a user-owned
BlockBackend, so we want to test both paths at least for the basic tests
implemented by TestInitiallyFilled and TestInitiallyEmpty.

This would have caught the bug recently fixed for inserting read-only
nodes into a scsi-cd created without a drive=... option.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>

tests/qemu-iotests/118

@@ -42,10 +42,14 @@ class ChangeBaseClass(iotests.QMPTestCase):
     has_opened = False
     has_closed = False
 
+    device_name = 'qdev0'
+    use_drive = False
+
     def process_events(self):
         for event in self.vm.get_qmp_events(wait=False):
             if (event['event'] == 'DEVICE_TRAY_MOVED' and
-                event['data']['device'] == 'drive0'):
+                (event['data']['device'] == 'drive0' or
+                 event['data']['id'] == self.device_name)):
                 if event['data']['tray-open'] == False:
                     self.has_closed = True
                 else:
@@ -69,9 +73,11 @@ class ChangeBaseClass(iotests.QMPTestCase):
 
 class GeneralChangeTestsBaseClass(ChangeBaseClass):
 
-    device_name = 'qdev0'
-
     def test_change(self):
+        # 'change' requires a drive name, so skip the test for blockdev
+        if not self.use_drive:
+            return
+
         result = self.vm.qmp('change', device='drive0', target=new_img,
                                        arg=iotests.imgfmt)
         self.assert_qmp(result, 'return', {})
@@ -298,7 +304,13 @@ class TestInitiallyFilled(GeneralChangeTestsBaseClass):
         qemu_img('create', '-f', iotests.imgfmt, old_img, '1440k')
         qemu_img('create', '-f', iotests.imgfmt, new_img, '1440k')
         self.vm = iotests.VM()
-        self.vm.add_drive(old_img, 'media=%s' % self.media, 'none')
+        if self.use_drive:
+            self.vm.add_drive(old_img, 'media=%s' % self.media, 'none')
+        else:
+            self.vm.add_blockdev([ 'node-name=drive0',
+                                   'driver=%s' % iotests.imgfmt,
+                                   'file.driver=file',
+                                   'file.filename=%s' % old_img ])
         if self.interface == 'scsi':
             self.vm.add_device('virtio-scsi-pci')
         self.vm.add_device('%s,drive=drive0,id=%s' %
@@ -333,11 +345,14 @@ class TestInitiallyEmpty(GeneralChangeTestsBaseClass):
 
     def setUp(self):
         qemu_img('create', '-f', iotests.imgfmt, new_img, '1440k')
-        self.vm = iotests.VM().add_drive(None, 'media=%s' % self.media, 'none')
+        self.vm = iotests.VM()
+        if self.use_drive:
+            self.vm.add_drive(None, 'media=%s' % self.media, 'none')
         if self.interface == 'scsi':
             self.vm.add_device('virtio-scsi-pci')
-        self.vm.add_device('%s,drive=drive0,id=%s' %
+        self.vm.add_device('%s,%sid=%s' %
                            (interface_to_device_name(self.interface),
+                            'drive=drive0,' if self.use_drive else '',
                             self.device_name))
         self.vm.launch()
 
@@ -363,13 +378,15 @@ def create_basic_test_classes():
                                                ('disk', 'floppy', False) ]:
 
         for case in [ TestInitiallyFilled, TestInitiallyEmpty ]:
-
-            attr = { 'media': media,
-                     'interface': interface,
-                     'has_real_tray': has_real_tray }
-
-            name = '%s_%s_%s' % (case.__name__, media, interface)
-            globals()[name] = type(name, (case, ), attr)
+            for use_drive in [ True, False ]:
+                attr = { 'media': media,
+                         'interface': interface,
+                         'has_real_tray': has_real_tray,
+                         'use_drive': use_drive }
+
+                name = '%s_%s_%s_%s' % (case.__name__, media, interface,
+                                        'drive' if use_drive else 'blockdev')
+                globals()[name] = type(name, (case, ), attr)
 
 create_basic_test_classes()
 

tests/qemu-iotests/118.out

@@ -1,5 +1,5 @@
-.........................................................................................
+.......................................................................................................................................................................
 ----------------------------------------------------------------------
-Ran 89 tests
+Ran 167 tests
 
 OK