block: Remove "options" indirection from blockdev-add

Now that QAPI supports boxed types, we can have unions at the top level
of a command, so let's put our real options directly there for
blockdev-add instead of having a single "options" dict that contains the
real arguments.

blockdev-add is still experimental and we already made substantial
changes to the API recently, so we're free to make changes like this
one, too.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>

12 files changed, 173 insertions, 212 deletions

diff --git a/tests/qemu-iotests/041 b/tests/qemu-iotests/041
index d1e1ad8bd2..30e628f0f7 100755
--- a/tests/qemu-iotests/041
+++ b/tests/qemu-iotests/041
@@ -194,10 +194,9 @@ class TestSingleBlockdev(TestSingleDrive):
     def setUp(self):
         TestSingleDrive.setUp(self)
         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img)
-        args = {'options':
-                    {'driver': iotests.imgfmt,
-                     'node-name': self.qmp_target,
-                     'file': { 'filename': target_img, 'driver': 'file' } } }
+        args = {'driver': iotests.imgfmt,
+                'node-name': self.qmp_target,
+                'file': { 'filename': target_img, 'driver': 'file' } }
         result = self.vm.qmp("blockdev-add", **args)
         self.assert_qmp(result, 'return', {})
 
@@ -782,8 +781,8 @@ class TestRepairQuorum(iotests.QMPTestCase):
         self.vm.launch()
 
         #assemble the quorum block device from the individual files
-        args = { "options" : { "driver": "quorum", "node-name": "quorum0",
-                 "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } }
+        args = { "driver": "quorum", "node-name": "quorum0",
+                 "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] }
         if self.has_quorum():
             result = self.vm.qmp("blockdev-add", **args)
             self.assert_qmp(result, 'return', {})
diff --git a/tests/qemu-iotests/067 b/tests/qemu-iotests/067
index a12125bd46..38d23fce6b 100755
--- a/tests/qemu-iotests/067
+++ b/tests/qemu-iotests/067
@@ -119,13 +119,11 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "node-name": "disk",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+      "driver": "$IMGFMT",
+      "node-name": "disk",
+      "file": {
+          "driver": "file",
+          "filename": "$TEST_IMG"
       }
     }
   }
diff --git a/tests/qemu-iotests/071 b/tests/qemu-iotests/071
index 6d0864cff6..48b495513f 100755
--- a/tests/qemu-iotests/071
+++ b/tests/qemu-iotests/071
@@ -107,25 +107,21 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "node-name": "drive0",
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+        "node-name": "drive0",
+        "driver": "file",
+        "filename": "$TEST_IMG"
     }
 }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "driver": "$IMGFMT",
-            "node-name": "drive0-debug",
-            "file": {
-                "driver": "blkdebug",
-                "image": "drive0",
-                "inject-error": [{
-                    "event": "l2_load"
-                }]
-            }
+        "driver": "$IMGFMT",
+        "node-name": "drive0-debug",
+        "file": {
+            "driver": "blkdebug",
+            "image": "drive0",
+            "inject-error": [{
+                "event": "l2_load"
+            }]
         }
     }
 }
@@ -145,26 +141,22 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "node-name": "drive0",
-            "driver": "$IMGFMT",
-            "file": {
-                "driver": "file",
-                "filename": "$TEST_IMG"
-            }
+        "node-name": "drive0",
+        "driver": "$IMGFMT",
+        "file": {
+            "driver": "file",
+            "filename": "$TEST_IMG"
         }
     }
 }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "driver": "blkverify",
-            "node-name": "drive0-verify",
-            "test": "drive0",
-            "raw": {
-                "driver": "file",
-                "filename": "$TEST_IMG.base"
-            }
+        "driver": "blkverify",
+        "node-name": "drive0-verify",
+        "test": "drive0",
+        "raw": {
+            "driver": "file",
+            "filename": "$TEST_IMG.base"
         }
     }
 }
@@ -184,27 +176,23 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "node-name": "drive0",
-            "driver": "file",
-            "filename": "$TEST_IMG.base"
-        }
+        "node-name": "drive0",
+        "driver": "file",
+        "filename": "$TEST_IMG.base"
     }
 }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "driver": "blkverify",
-            "node-name": "drive0-verify",
-            "test": {
-                "driver": "$IMGFMT",
-                "file": {
-                    "driver": "file",
-                    "filename": "$TEST_IMG"
-                }
-            },
-            "raw": "drive0"
-        }
+        "driver": "blkverify",
+        "node-name": "drive0-verify",
+        "test": {
+            "driver": "$IMGFMT",
+            "file": {
+                "driver": "file",
+                "filename": "$TEST_IMG"
+            }
+        },
+        "raw": "drive0"
     }
 }
 { "execute": "human-monitor-command",
@@ -223,30 +211,26 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "node-name": "drive0",
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+        "node-name": "drive0",
+        "driver": "file",
+        "filename": "$TEST_IMG"
     }
 }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "driver": "$IMGFMT",
-            "node-name": "drive0-debug",
-            "file": {
-                "driver": "blkdebug",
-                "image": "drive0",
-                "inject-error": [{
-                    "event": "read_aio",
-                    "state": 42
-                }],
-                "set-state": [{
-                    "event": "write_aio",
-                    "new_state": 42
-                }]
-            }
+        "driver": "$IMGFMT",
+        "node-name": "drive0-debug",
+        "file": {
+            "driver": "blkdebug",
+            "image": "drive0",
+            "inject-error": [{
+                "event": "read_aio",
+                "state": 42
+            }],
+            "set-state": [{
+                "event": "write_aio",
+                "new_state": 42
+            }]
         }
     }
 }
diff --git a/tests/qemu-iotests/081 b/tests/qemu-iotests/081
index 0a809f3499..da3fb0984b 100755
--- a/tests/qemu-iotests/081
+++ b/tests/qemu-iotests/081
@@ -105,40 +105,36 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "node-name": "drive2",
-            "driver": "$IMGFMT",
-            "file": {
-                "driver": "file",
-                "filename": "$TEST_DIR/2.raw"
-            }
+        "node-name": "drive2",
+        "driver": "$IMGFMT",
+        "file": {
+            "driver": "file",
+            "filename": "$TEST_DIR/2.raw"
         }
     }
 }
 { "execute": "blockdev-add",
     "arguments": {
-        "options": {
-            "driver": "quorum",
-            "node-name": "drive0-quorum",
-            "vote-threshold": 2,
-            "children": [
-                {
-                    "driver": "$IMGFMT",
-                    "file": {
-                        "driver": "file",
-                        "filename": "$TEST_DIR/1.raw"
-                    }
-                },
-                "drive2",
-                {
-                    "driver": "$IMGFMT",
-                    "file": {
-                        "driver": "file",
-                        "filename": "$TEST_DIR/3.raw"
-                    }
+        "driver": "quorum",
+        "node-name": "drive0-quorum",
+        "vote-threshold": 2,
+        "children": [
+            {
+                "driver": "$IMGFMT",
+                "file": {
+                    "driver": "file",
+                    "filename": "$TEST_DIR/1.raw"
                 }
-            ]
-        }
+            },
+            "drive2",
+            {
+                "driver": "$IMGFMT",
+                "file": {
+                    "driver": "file",
+                    "filename": "$TEST_DIR/3.raw"
+                }
+            }
+        ]
     }
 }
 { "execute": "human-monitor-command",
diff --git a/tests/qemu-iotests/085 b/tests/qemu-iotests/085
index aa77eca77d..c53e97f067 100755
--- a/tests/qemu-iotests/085
+++ b/tests/qemu-iotests/085
@@ -100,11 +100,10 @@ function add_snapshot_image()
     _make_test_img -b "${base_image}" "$size"
     mv "${TEST_IMG}" "${snapshot_file}"
     cmd="{ 'execute': 'blockdev-add', 'arguments':
-           { 'options':
-             { 'driver': 'qcow2', 'node-name': 'snap_${1}', ${extra_params}
-               'file':
-               { 'driver': 'file', 'filename': '${snapshot_file}',
-                 'node-name': 'file_${1}' } } } }"
+           { 'driver': 'qcow2', 'node-name': 'snap_${1}', ${extra_params}
+             'file':
+             { 'driver': 'file', 'filename': '${snapshot_file}',
+               'node-name': 'file_${1}' } } }"
     _send_qemu_cmd $h "${cmd}" "return"
 }
 
diff --git a/tests/qemu-iotests/087 b/tests/qemu-iotests/087
index b1ac71f2b8..9de57ddf6d 100755
--- a/tests/qemu-iotests/087
+++ b/tests/qemu-iotests/087
@@ -61,12 +61,10 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+      "driver": "$IMGFMT",
+      "file": {
+          "driver": "file",
+          "filename": "$TEST_IMG"
       }
     }
   }
@@ -81,25 +79,21 @@ run_qemu -drive driver=$IMGFMT,id=disk,node-name=test-node,file="$TEST_IMG" <<EO
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "node-name": "disk",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+      "driver": "$IMGFMT",
+      "node-name": "disk",
+      "file": {
+          "driver": "file",
+          "filename": "$TEST_IMG"
       }
     }
   }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "node-name": "test-node",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+      "driver": "$IMGFMT",
+      "node-name": "test-node",
+      "file": {
+          "driver": "file",
+          "filename": "$TEST_IMG"
       }
     }
   }
@@ -114,14 +108,12 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "node-name": "disk",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG",
-            "aio": "native"
-        }
+      "driver": "$IMGFMT",
+      "node-name": "disk",
+      "file": {
+          "driver": "file",
+          "filename": "$TEST_IMG",
+          "aio": "native"
       }
     }
   }
@@ -137,13 +129,11 @@ run_qemu -S <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "node-name": "disk",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+      "driver": "$IMGFMT",
+      "node-name": "disk",
+      "file": {
+          "driver": "file",
+          "filename": "$TEST_IMG"
       }
     }
   }
@@ -154,13 +144,11 @@ run_qemu <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "node-name": "disk",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
+      "driver": "$IMGFMT",
+      "node-name": "disk",
+      "file": {
+          "driver": "file",
+          "filename": "$TEST_IMG"
       }
     }
   }
@@ -176,9 +164,7 @@ run_qemu -S <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
-      "options": {
-        "node-name": "disk"
-      }
+      "node-name": "disk"
     }
   }
 { "execute": "quit" }
diff --git a/tests/qemu-iotests/117 b/tests/qemu-iotests/117
index 5b28039e17..e955d52de3 100755
--- a/tests/qemu-iotests/117
+++ b/tests/qemu-iotests/117
@@ -52,16 +52,16 @@ _send_qemu_cmd $QEMU_HANDLE \
 
 _send_qemu_cmd $QEMU_HANDLE \
     "{ 'execute': 'blockdev-add',
-       'arguments': { 'options': { 'node-name': 'protocol',
-                                   'driver': 'file',
-                                   'filename': '$TEST_IMG' } } }" \
+       'arguments': { 'node-name': 'protocol',
+                      'driver': 'file',
+                      'filename': '$TEST_IMG' } }" \
     'return'
 
 _send_qemu_cmd $QEMU_HANDLE \
     "{ 'execute': 'blockdev-add',
-       'arguments': { 'options': { 'node-name': 'format',
-                                   'driver': '$IMGFMT',
-                                   'file': 'protocol' } } }" \
+       'arguments': { 'node-name': 'format',
+                      'driver': '$IMGFMT',
+                      'file': 'protocol' } }" \
     'return'
 
 _send_qemu_cmd $QEMU_HANDLE \
diff --git a/tests/qemu-iotests/118 b/tests/qemu-iotests/118
index e63a40fa94..8a9e838c90 100755
--- a/tests/qemu-iotests/118
+++ b/tests/qemu-iotests/118
@@ -229,10 +229,10 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
 
     def test_cycle(self):
         result = self.vm.qmp('blockdev-add',
-                             options={'node-name': 'new',
-                                      'driver': iotests.imgfmt,
-                                      'file': {'filename': new_img,
-                                               'driver': 'file'}})
+                             node_name='new',
+                             driver=iotests.imgfmt,
+                             file={'filename': new_img,
+                                    'driver': 'file'})
         self.assert_qmp(result, 'return', {})
 
         if self.device_name is not None:
@@ -309,10 +309,10 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
             return
 
         result = self.vm.qmp('blockdev-add',
-                             options={'node-name': 'new',
-                                      'driver': iotests.imgfmt,
-                                      'file': {'filename': new_img,
-                                               'driver': 'file'}})
+                             node_name='new',
+                             driver=iotests.imgfmt,
+                             file={'filename': new_img,
+                                   'driver': 'file'})
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('x-blockdev-insert-medium', device='drive0',
@@ -341,10 +341,10 @@ class TestInitiallyFilled(GeneralChangeTestsBaseClass):
 
     def test_insert_on_filled(self):
         result = self.vm.qmp('blockdev-add',
-                             options={'node-name': 'new',
-                                      'driver': iotests.imgfmt,
-                                      'file': {'filename': new_img,
-                                               'driver': 'file'}})
+                             node_name='new',
+                             driver=iotests.imgfmt,
+                             file={'filename': new_img,
+                                   'driver': 'file'})
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('blockdev-open-tray', device='drive0')
@@ -609,11 +609,11 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
         result = self.vm.qmp('blockdev-add',
-                             options={'node-name': 'new',
-                                      'driver': iotests.imgfmt,
-                                      'read-only': True,
-                                      'file': {'filename': new_img,
-                                               'driver': 'file'}})
+                             node_name='new',
+                             driver=iotests.imgfmt,
+                             read_only=True,
+                             file={'filename': new_img,
+                                    'driver': 'file'})
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
@@ -663,10 +663,10 @@ class TestBlockJobsAfterCycle(ChangeBaseClass):
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
         result = self.vm.qmp('blockdev-add',
-                             options={'node-name': 'node0',
-                                      'driver': iotests.imgfmt,
-                                      'file': {'filename': old_img,
-                                               'driver': 'file'}})
+                             node_name='node0',
+                             driver=iotests.imgfmt,
+                             file={'filename': old_img,
+                                   'driver': 'file'})
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('x-blockdev-insert-medium', device='drive0',
diff --git a/tests/qemu-iotests/124 b/tests/qemu-iotests/124
index 2f0bc24cd0..f06938eeb7 100644
--- a/tests/qemu-iotests/124
+++ b/tests/qemu-iotests/124
@@ -416,10 +416,10 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
                                            ('0xcd', '32M', '124k')))
 
         # Create a blkdebug interface to this img as 'drive1'
-        result = self.vm.qmp('blockdev-add', options={
-            'node-name': drive1['id'],
-            'driver': drive1['fmt'],
-            'file': {
+        result = self.vm.qmp('blockdev-add',
+            node_name=drive1['id'],
+            driver=drive1['fmt'],
+            file={
                 'driver': 'blkdebug',
                 'image': {
                     'driver': 'file',
@@ -438,7 +438,7 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
                     'once': True
                 }],
             }
-        })
+        )
         self.assert_qmp(result, 'return', {})
 
         # Create bitmaps and full backups for both drives
@@ -560,10 +560,10 @@ class TestIncrementalBackupBlkdebug(TestIncrementalBackupBase):
         '''
 
         drive0 = self.drives[0]
-        result = self.vm.qmp('blockdev-add', options={
-            'node-name': drive0['id'],
-            'driver': drive0['fmt'],
-            'file': {
+        result = self.vm.qmp('blockdev-add',
+            node_name=drive0['id'],
+            driver=drive0['fmt'],
+            file={
                 'driver': 'blkdebug',
                 'image': {
                     'driver': 'file',
@@ -582,7 +582,7 @@ class TestIncrementalBackupBlkdebug(TestIncrementalBackupBase):
                     'once': True
                 }],
             }
-        })
+        )
         self.assert_qmp(result, 'return', {})
 
         self.create_anchor_backup(drive0)
diff --git a/tests/qemu-iotests/139 b/tests/qemu-iotests/139
index 47a4c26e29..6a0f6ca569 100644
--- a/tests/qemu-iotests/139
+++ b/tests/qemu-iotests/139
@@ -57,7 +57,7 @@ class TestBlockdevDel(iotests.QMPTestCase):
                 'file': {'driver': 'file',
                          'node-name': file_node,
                          'filename': base_img}}
-        result = self.vm.qmp('blockdev-add', conv_keys = False, options = opts)
+        result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
         self.assert_qmp(result, 'return', {})
         self.checkBlockDriverState(node)
         self.checkBlockDriverState(file_node)
@@ -72,7 +72,7 @@ class TestBlockdevDel(iotests.QMPTestCase):
                 'backing': '',
                 'file': {'driver': 'file',
                          'filename': new_img}}
-        result = self.vm.qmp('blockdev-add', conv_keys = False, options = opts)
+        result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
         self.assert_qmp(result, 'return', {})
         self.checkBlockDriverState(node)
 
@@ -185,7 +185,7 @@ class TestBlockdevDel(iotests.QMPTestCase):
         opts = {'driver': 'blkdebug',
                 'node-name': debug,
                 'image': image}
-        result = self.vm.qmp('blockdev-add', conv_keys = False, options = opts)
+        result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
         self.assert_qmp(result, 'return', {})
         self.checkBlockDriverState(node)
         self.checkBlockDriverState(debug)
@@ -210,7 +210,7 @@ class TestBlockdevDel(iotests.QMPTestCase):
                 'node-name': blkverify,
                 'test': node_0,
                 'raw': node_1}
-        result = self.vm.qmp('blockdev-add', conv_keys = False, options = opts)
+        result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
         self.assert_qmp(result, 'return', {})
         self.checkBlockDriverState(test)
         self.checkBlockDriverState(raw)
@@ -234,7 +234,7 @@ class TestBlockdevDel(iotests.QMPTestCase):
                 'node-name': quorum,
                 'vote-threshold': 1,
                 'children': [ child_0, child_1 ]}
-        result = self.vm.qmp('blockdev-add', conv_keys = False, options = opts)
+        result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
         self.assert_qmp(result, 'return', {})
         self.checkBlockDriverState(child0)
         self.checkBlockDriverState(child1)
diff --git a/tests/qemu-iotests/141 b/tests/qemu-iotests/141
index c092d872dc..3ba79f027a 100755
--- a/tests/qemu-iotests/141
+++ b/tests/qemu-iotests/141
@@ -50,13 +50,12 @@ test_blockjob()
     _send_qemu_cmd $QEMU_HANDLE \
         "{'execute': 'blockdev-add',
           'arguments': {
-              'options': {
-                  'node-name': 'drv0',
-                  'driver': '$IMGFMT',
-                  'file': {
-                      'driver': 'file',
-                      'filename': '$TEST_IMG'
-                  }}}}" \
+              'node-name': 'drv0',
+              'driver': '$IMGFMT',
+              'file': {
+                  'driver': 'file',
+                  'filename': '$TEST_IMG'
+              }}}" \
         'return'
 
     _send_qemu_cmd $QEMU_HANDLE \
diff --git a/tests/qemu-iotests/155 b/tests/qemu-iotests/155
index 4057b5e2aa..0b86ea4e5c 100755
--- a/tests/qemu-iotests/155
+++ b/tests/qemu-iotests/155
@@ -63,10 +63,10 @@ class BaseClass(iotests.QMPTestCase):
         # Add the BDS via blockdev-add so it stays around after the mirror block
         # job has been completed
         result = self.vm.qmp('blockdev-add',
-                             options={'node-name': 'source',
-                                      'driver': iotests.imgfmt,
-                                      'file': {'driver': 'file',
-                                               'filename': source_img}})
+                             node_name='source',
+                             driver=iotests.imgfmt,
+                             file={'driver': 'file',
+                                   'filename': source_img})
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('x-blockdev-insert-medium',
@@ -90,7 +90,7 @@ class BaseClass(iotests.QMPTestCase):
                 if self.target_blockdev_backing:
                     options['backing'] = self.target_blockdev_backing
 
-                result = self.vm.qmp('blockdev-add', options=options)
+                result = self.vm.qmp('blockdev-add', **options)
                 self.assert_qmp(result, 'return', {})
 
     def tearDown(self):