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BUG=b:233893248
TEST=CQ

Change-Id: I66591d7a738d241aed3290138c0f68065ab10a6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3879174
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
diff --git a/api/controller/image_unittest.py b/api/controller/image_unittest.py
index b0bc2b5..8700322 100644
--- a/api/controller/image_unittest.py
+++ b/api/controller/image_unittest.py
@@ -25,550 +25,642 @@
 
 
 class CreateTest(cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin):
-  """Create image tests."""
+    """Create image tests."""
 
-  def setUp(self):
-    self.response = image_pb2.CreateImageResult()
+    def setUp(self):
+        self.response = image_pb2.CreateImageResult()
 
-  def _GetRequest(self,
-                  board=None,
-                  types=None,
-                  version=None,
-                  builder_path=None,
-                  disable_rootfs_verification=False,
-                  base_is_recovery=False):
-    """Helper to build a request instance."""
-    return image_pb2.CreateImageRequest(
-        build_target={'name': board},
-        image_types=types,
-        disable_rootfs_verification=disable_rootfs_verification,
-        version=version,
-        builder_path=builder_path,
-        base_is_recovery=base_is_recovery,
-    )
+    def _GetRequest(
+        self,
+        board=None,
+        types=None,
+        version=None,
+        builder_path=None,
+        disable_rootfs_verification=False,
+        base_is_recovery=False,
+    ):
+        """Helper to build a request instance."""
+        return image_pb2.CreateImageRequest(
+            build_target={"name": board},
+            image_types=types,
+            disable_rootfs_verification=disable_rootfs_verification,
+            version=version,
+            builder_path=builder_path,
+            base_is_recovery=base_is_recovery,
+        )
 
-  def testValidateOnly(self):
-    """Sanity check that a validate only call does not execute any logic."""
-    patch = self.PatchObject(image_service, 'Build')
+    def testValidateOnly(self):
+        """Sanity check that a validate only call does not execute any logic."""
+        patch = self.PatchObject(image_service, "Build")
 
-    request = self._GetRequest(board='board')
-    image_controller.Create(request, self.response, self.validate_only_config)
-    patch.assert_not_called()
+        request = self._GetRequest(board="board")
+        image_controller.Create(
+            request, self.response, self.validate_only_config
+        )
+        patch.assert_not_called()
 
-  def testMockCall(self):
-    """Test that mock call does not execute any logic, returns mocked value."""
-    patch = self.PatchObject(image_service, 'Build')
+    def testMockCall(self):
+        """Test that mock call does not execute any logic, returns mocked value."""
+        patch = self.PatchObject(image_service, "Build")
 
-    request = self._GetRequest(board='board')
-    image_controller.Create(request, self.response, self.mock_call_config)
-    patch.assert_not_called()
-    self.assertEqual(self.response.success, True)
+        request = self._GetRequest(board="board")
+        image_controller.Create(request, self.response, self.mock_call_config)
+        patch.assert_not_called()
+        self.assertEqual(self.response.success, True)
 
-  def testMockError(self):
-    """Test that mock call does not execute any logic, returns error."""
-    patch = self.PatchObject(image_service, 'Build')
+    def testMockError(self):
+        """Test that mock call does not execute any logic, returns error."""
+        patch = self.PatchObject(image_service, "Build")
 
-    request = self._GetRequest(board='board')
-    rc = image_controller.Create(request, self.response, self.mock_error_config)
-    patch.assert_not_called()
-    self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
+        request = self._GetRequest(board="board")
+        rc = image_controller.Create(
+            request, self.response, self.mock_error_config
+        )
+        patch.assert_not_called()
+        self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
 
-  def testNoBoard(self):
-    """Test no board given fails."""
-    request = self._GetRequest()
+    def testNoBoard(self):
+        """Test no board given fails."""
+        request = self._GetRequest()
 
-    # No board should cause it to fail.
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.Create(request, self.response, self.api_config)
+        # No board should cause it to fail.
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.Create(request, self.response, self.api_config)
 
-  def testNoTypeSpecified(self):
-    """Test the image type default."""
-    request = self._GetRequest(board='board')
+    def testNoTypeSpecified(self):
+        """Test the image type default."""
+        request = self._GetRequest(board="board")
 
-    # Failed result to avoid the success handling logic.
-    result = image_service.BuildResult([constants.IMAGE_TYPE_BASE])
-    result.return_code = 1
-    build_patch = self.PatchObject(image_service, 'Build', return_value=result)
+        # Failed result to avoid the success handling logic.
+        result = image_service.BuildResult([constants.IMAGE_TYPE_BASE])
+        result.return_code = 1
+        build_patch = self.PatchObject(
+            image_service, "Build", return_value=result
+        )
 
-    image_controller.Create(request, self.response, self.api_config)
-    build_patch.assert_any_call(
-        'board', [constants.IMAGE_TYPE_BASE], config=mock.ANY)
+        image_controller.Create(request, self.response, self.api_config)
+        build_patch.assert_any_call(
+            "board", [constants.IMAGE_TYPE_BASE], config=mock.ANY
+        )
 
-  def testSingleTypeSpecified(self):
-    """Test it's properly using a specified type."""
-    request = self._GetRequest(board='board', types=[common_pb2.IMAGE_TYPE_DEV])
+    def testSingleTypeSpecified(self):
+        """Test it's properly using a specified type."""
+        request = self._GetRequest(
+            board="board", types=[common_pb2.IMAGE_TYPE_DEV]
+        )
 
-    # Failed result to avoid the success handling logic.
-    result = image_service.BuildResult([constants.IMAGE_TYPE_DEV])
-    result.return_code = 1
-    build_patch = self.PatchObject(image_service, 'Build', return_value=result)
+        # Failed result to avoid the success handling logic.
+        result = image_service.BuildResult([constants.IMAGE_TYPE_DEV])
+        result.return_code = 1
+        build_patch = self.PatchObject(
+            image_service, "Build", return_value=result
+        )
 
-    image_controller.Create(request, self.response, self.api_config)
-    build_patch.assert_any_call(
-        'board', [constants.IMAGE_TYPE_DEV], config=mock.ANY)
+        image_controller.Create(request, self.response, self.api_config)
+        build_patch.assert_any_call(
+            "board", [constants.IMAGE_TYPE_DEV], config=mock.ANY
+        )
 
-  def testMultipleAndImpliedTypes(self):
-    """Test multiple types and implied type handling."""
-    # The TEST_VM type should force it to build the test image.
-    types = [common_pb2.IMAGE_TYPE_BASE, common_pb2.IMAGE_TYPE_TEST_VM]
-    expected_images = [constants.IMAGE_TYPE_BASE, constants.IMAGE_TYPE_TEST]
+    def testMultipleAndImpliedTypes(self):
+        """Test multiple types and implied type handling."""
+        # The TEST_VM type should force it to build the test image.
+        types = [common_pb2.IMAGE_TYPE_BASE, common_pb2.IMAGE_TYPE_TEST_VM]
+        expected_images = [constants.IMAGE_TYPE_BASE, constants.IMAGE_TYPE_TEST]
 
-    request = self._GetRequest(board='board', types=types)
+        request = self._GetRequest(board="board", types=types)
 
-    # Failed result to avoid the success handling logic.
-    result = image_service.BuildResult(expected_images)
-    result.return_code = 1
-    build_patch = self.PatchObject(image_service, 'Build', return_value=result)
+        # Failed result to avoid the success handling logic.
+        result = image_service.BuildResult(expected_images)
+        result.return_code = 1
+        build_patch = self.PatchObject(
+            image_service, "Build", return_value=result
+        )
 
-    image_controller.Create(request, self.response, self.api_config)
-    build_patch.assert_any_call('board', expected_images, config=mock.ANY)
+        image_controller.Create(request, self.response, self.api_config)
+        build_patch.assert_any_call("board", expected_images, config=mock.ANY)
 
-  def testRecoveryImpliedTypes(self):
-    """Test implied type handling of recovery images."""
-    # The TEST_VM type should force it to build the test image.
-    types = [common_pb2.IMAGE_TYPE_RECOVERY]
+    def testRecoveryImpliedTypes(self):
+        """Test implied type handling of recovery images."""
+        # The TEST_VM type should force it to build the test image.
+        types = [common_pb2.IMAGE_TYPE_RECOVERY]
 
-    request = self._GetRequest(board='board', types=types)
+        request = self._GetRequest(board="board", types=types)
 
-    # Failed result to avoid the success handling logic.
-    result = image_service.BuildResult([])
-    result.return_code = 1
-    build_patch = self.PatchObject(image_service, 'Build', return_value=result)
+        # Failed result to avoid the success handling logic.
+        result = image_service.BuildResult([])
+        result.return_code = 1
+        build_patch = self.PatchObject(
+            image_service, "Build", return_value=result
+        )
 
-    image_controller.Create(request, self.response, self.api_config)
-    build_patch.assert_any_call(
-        'board', [constants.IMAGE_TYPE_BASE], config=mock.ANY)
+        image_controller.Create(request, self.response, self.api_config)
+        build_patch.assert_any_call(
+            "board", [constants.IMAGE_TYPE_BASE], config=mock.ANY
+        )
 
-  def testFailedPackageHandling(self):
-    """Test failed packages are populated correctly."""
-    result = image_service.BuildResult([])
-    result.return_code = 1
-    result.failed_packages = ['foo/bar', 'cat/pkg']
-    expected_packages = [('foo', 'bar'), ('cat', 'pkg')]
-    self.PatchObject(image_service, 'Build', return_value=result)
+    def testFailedPackageHandling(self):
+        """Test failed packages are populated correctly."""
+        result = image_service.BuildResult([])
+        result.return_code = 1
+        result.failed_packages = ["foo/bar", "cat/pkg"]
+        expected_packages = [("foo", "bar"), ("cat", "pkg")]
+        self.PatchObject(image_service, "Build", return_value=result)
 
-    input_proto = self._GetRequest(board='board')
+        input_proto = self._GetRequest(board="board")
 
-    rc = image_controller.Create(input_proto, self.response, self.api_config)
+        rc = image_controller.Create(
+            input_proto, self.response, self.api_config
+        )
 
-    self.assertEqual(controller.RETURN_CODE_UNSUCCESSFUL_RESPONSE_AVAILABLE, rc)
-    for package in self.response.failed_packages:
-      self.assertIn((package.category, package.package_name), expected_packages)
+        self.assertEqual(
+            controller.RETURN_CODE_UNSUCCESSFUL_RESPONSE_AVAILABLE, rc
+        )
+        for package in self.response.failed_packages:
+            self.assertIn(
+                (package.category, package.package_name), expected_packages
+            )
 
-  def testNoPackagesFailureHandling(self):
-    """Test failed packages are populated correctly."""
-    result = image_service.BuildResult([])
-    result.return_code = 1
-    self.PatchObject(image_service, 'Build', return_value=result)
+    def testNoPackagesFailureHandling(self):
+        """Test failed packages are populated correctly."""
+        result = image_service.BuildResult([])
+        result.return_code = 1
+        self.PatchObject(image_service, "Build", return_value=result)
 
-    input_proto = image_pb2.CreateImageRequest()
-    input_proto.build_target.name = 'board'
+        input_proto = image_pb2.CreateImageRequest()
+        input_proto.build_target.name = "board"
 
-    rc = image_controller.Create(input_proto, self.response, self.api_config)
-    self.assertTrue(rc)
-    self.assertNotEqual(controller.RETURN_CODE_UNSUCCESSFUL_RESPONSE_AVAILABLE,
-                        rc)
-    self.assertFalse(self.response.failed_packages)
+        rc = image_controller.Create(
+            input_proto, self.response, self.api_config
+        )
+        self.assertTrue(rc)
+        self.assertNotEqual(
+            controller.RETURN_CODE_UNSUCCESSFUL_RESPONSE_AVAILABLE, rc
+        )
+        self.assertFalse(self.response.failed_packages)
 
 
-class RecoveryImageTest(cros_test_lib.RunCommandTempDirTestCase,
-                        api_config.ApiConfigMixin):
-  """Recovery image tests."""
+class RecoveryImageTest(
+    cros_test_lib.RunCommandTempDirTestCase, api_config.ApiConfigMixin
+):
+    """Recovery image tests."""
 
-  def setUp(self):
-    self.response = image_pb2.CreateImageResult()
-    self.types = [common_pb2.IMAGE_TYPE_BASE, common_pb2.IMAGE_TYPE_RECOVERY]
-    self.build_result = self._CreateMockBuildResult(
-        [common_pb2.IMAGE_TYPE_BASE])
+    def setUp(self):
+        self.response = image_pb2.CreateImageResult()
+        self.types = [
+            common_pb2.IMAGE_TYPE_BASE,
+            common_pb2.IMAGE_TYPE_RECOVERY,
+        ]
+        self.build_result = self._CreateMockBuildResult(
+            [common_pb2.IMAGE_TYPE_BASE]
+        )
 
-    self.PatchObject(
-        image_service,
-        'Build',
-        side_effect=[
-            self.build_result,
-            self._CreateMockBuildResult([common_pb2.IMAGE_TYPE_FACTORY]),
-        ])
-    self.copy_image_mock = self.PatchObject(
-        image_service,
-        'CopyBaseToRecovery',
-        side_effect=[
-            self._CreateMockBuildResult([common_pb2.IMAGE_TYPE_RECOVERY]),
-        ])
-    self.recov_image_mock = self.PatchObject(
-        image_service,
-        'BuildRecoveryImage',
-        side_effect=[
-            self._CreateMockBuildResult([common_pb2.IMAGE_TYPE_RECOVERY]),
-        ])
+        self.PatchObject(
+            image_service,
+            "Build",
+            side_effect=[
+                self.build_result,
+                self._CreateMockBuildResult([common_pb2.IMAGE_TYPE_FACTORY]),
+            ],
+        )
+        self.copy_image_mock = self.PatchObject(
+            image_service,
+            "CopyBaseToRecovery",
+            side_effect=[
+                self._CreateMockBuildResult([common_pb2.IMAGE_TYPE_RECOVERY]),
+            ],
+        )
+        self.recov_image_mock = self.PatchObject(
+            image_service,
+            "BuildRecoveryImage",
+            side_effect=[
+                self._CreateMockBuildResult([common_pb2.IMAGE_TYPE_RECOVERY]),
+            ],
+        )
 
-  def _GetRequest(self,
-                  board=None,
-                  types=None,
-                  version=None,
-                  builder_path=None,
-                  disable_rootfs_verification=False,
-                  base_is_recovery=False):
-    """Helper to build a request instance."""
-    return image_pb2.CreateImageRequest(
-        build_target={'name': board},
-        image_types=types,
-        disable_rootfs_verification=disable_rootfs_verification,
-        version=version,
-        builder_path=builder_path,
-        base_is_recovery=base_is_recovery,
-    )
+    def _GetRequest(
+        self,
+        board=None,
+        types=None,
+        version=None,
+        builder_path=None,
+        disable_rootfs_verification=False,
+        base_is_recovery=False,
+    ):
+        """Helper to build a request instance."""
+        return image_pb2.CreateImageRequest(
+            build_target={"name": board},
+            image_types=types,
+            disable_rootfs_verification=disable_rootfs_verification,
+            version=version,
+            builder_path=builder_path,
+            base_is_recovery=base_is_recovery,
+        )
 
-  def _CreateMockBuildResult(
-      self, image_types: List[int]) -> Optional[image_service.BuildResult]:
-    """Helper to create Mock build_image results.
+    def _CreateMockBuildResult(
+        self, image_types: List[int]
+    ) -> Optional[image_service.BuildResult]:
+        """Helper to create Mock build_image results.
 
-    Args:
-      image_types: A list of image types for which the mock BuildResult has to
-        be creates.
+        Args:
+          image_types: A list of image types for which the mock BuildResult has to
+            be creates.
 
-    Returns:
-      A list of mock BuildResult.
-    """
-    image_types_names = [
-        image_controller.SUPPORTED_IMAGE_TYPES[x]
-        for x in image_types
-        if image_controller.SUPPORTED_IMAGE_TYPES[x] in
-        constants.IMAGE_TYPE_TO_NAME
-    ]
+        Returns:
+          A list of mock BuildResult.
+        """
+        image_types_names = [
+            image_controller.SUPPORTED_IMAGE_TYPES[x]
+            for x in image_types
+            if image_controller.SUPPORTED_IMAGE_TYPES[x]
+            in constants.IMAGE_TYPE_TO_NAME
+        ]
 
-    if not image_types_names:
-      if common_pb2.IMAGE_TYPE_FACTORY in image_types and len(image_types) == 1:
-        image_types_names.append(constants.IMAGE_TYPE_FACTORY_SHIM)
-      else:
-        return None
+        if not image_types_names:
+            if (
+                common_pb2.IMAGE_TYPE_FACTORY in image_types
+                and len(image_types) == 1
+            ):
+                image_types_names.append(constants.IMAGE_TYPE_FACTORY_SHIM)
+            else:
+                return None
 
-    _build_result = image_service.BuildResult(image_types_names)
-    _build_result.return_code = 0
-    for image_type in image_types_names:
-      test_image = Path(self.tempdir) / constants.IMAGE_TYPE_TO_NAME[image_type]
-      test_image.touch()
-      _build_result.add_image(image_type, test_image)
+        _build_result = image_service.BuildResult(image_types_names)
+        _build_result.return_code = 0
+        for image_type in image_types_names:
+            test_image = (
+                Path(self.tempdir) / constants.IMAGE_TYPE_TO_NAME[image_type]
+            )
+            test_image.touch()
+            _build_result.add_image(image_type, test_image)
 
-    return _build_result
+        return _build_result
 
-  def testBaseIsRecoveryTrue(self):
-    """Test that cp is called."""
-    input_proto = self._GetRequest(
-        board='board', types=self.types, base_is_recovery=True)
-    image_controller.Create(input_proto, self.response, self.api_config)
+    def testBaseIsRecoveryTrue(self):
+        """Test that cp is called."""
+        input_proto = self._GetRequest(
+            board="board", types=self.types, base_is_recovery=True
+        )
+        image_controller.Create(input_proto, self.response, self.api_config)
 
-    self.copy_image_mock.assert_called_with(
-        board='board',
-        image_path=self.build_result.images[constants.IMAGE_TYPE_BASE])
+        self.copy_image_mock.assert_called_with(
+            board="board",
+            image_path=self.build_result.images[constants.IMAGE_TYPE_BASE],
+        )
 
-  def testBaseIsRecoveryFalse(self):
-    """Test that mod_image_for_recovery.sh is called."""
-    input_proto = self._GetRequest(
-        board='board', types=self.types, base_is_recovery=False)
-    image_controller.Create(input_proto, self.response, self.api_config)
+    def testBaseIsRecoveryFalse(self):
+        """Test that mod_image_for_recovery.sh is called."""
+        input_proto = self._GetRequest(
+            board="board", types=self.types, base_is_recovery=False
+        )
+        image_controller.Create(input_proto, self.response, self.api_config)
 
-    self.recov_image_mock.assert_called_with(
-        board='board',
-        image_path=self.build_result.images[constants.IMAGE_TYPE_BASE])
+        self.recov_image_mock.assert_called_with(
+            board="board",
+            image_path=self.build_result.images[constants.IMAGE_TYPE_BASE],
+        )
 
 
-class ImageSignerTestTest(cros_test_lib.MockTempDirTestCase,
-                          api_config.ApiConfigMixin):
-  """Image signer test tests."""
+class ImageSignerTestTest(
+    cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin
+):
+    """Image signer test tests."""
 
-  def setUp(self):
-    self.image_path = os.path.join(self.tempdir, 'image.bin')
-    self.result_directory = os.path.join(self.tempdir, 'results')
+    def setUp(self):
+        self.image_path = os.path.join(self.tempdir, "image.bin")
+        self.result_directory = os.path.join(self.tempdir, "results")
 
-    osutils.SafeMakedirs(self.result_directory)
-    osutils.Touch(self.image_path)
+        osutils.SafeMakedirs(self.result_directory)
+        osutils.Touch(self.image_path)
 
-  def testValidateOnly(self):
-    """Sanity check that validate-only calls don't execute any logic."""
-    patch = self.PatchObject(image_lib, 'SecurityTest', return_value=True)
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    output_proto = image_pb2.TestImageResult()
+    def testValidateOnly(self):
+        """Sanity check that validate-only calls don't execute any logic."""
+        patch = self.PatchObject(image_lib, "SecurityTest", return_value=True)
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        output_proto = image_pb2.TestImageResult()
 
-    image_controller.SignerTest(input_proto, output_proto,
-                                self.validate_only_config)
+        image_controller.SignerTest(
+            input_proto, output_proto, self.validate_only_config
+        )
 
-    patch.assert_not_called()
+        patch.assert_not_called()
 
-  def testMockCall(self):
-    """Test that mock call does not execute any logic, returns mocked value."""
-    patch = self.PatchObject(image_lib, 'SecurityTest', return_value=True)
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    output_proto = image_pb2.TestImageResult()
+    def testMockCall(self):
+        """Test that mock call does not execute any logic, returns mocked value."""
+        patch = self.PatchObject(image_lib, "SecurityTest", return_value=True)
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        output_proto = image_pb2.TestImageResult()
 
-    image_controller.SignerTest(input_proto, output_proto,
-                                self.mock_call_config)
+        image_controller.SignerTest(
+            input_proto, output_proto, self.mock_call_config
+        )
 
-    patch.assert_not_called()
-    self.assertEqual(output_proto.success, True)
+        patch.assert_not_called()
+        self.assertEqual(output_proto.success, True)
 
-  def testMockError(self):
-    """Test that mock call does not execute any logic, returns error."""
-    patch = self.PatchObject(image_lib, 'SecurityTest', return_value=True)
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    output_proto = image_pb2.TestImageResult()
+    def testMockError(self):
+        """Test that mock call does not execute any logic, returns error."""
+        patch = self.PatchObject(image_lib, "SecurityTest", return_value=True)
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        output_proto = image_pb2.TestImageResult()
 
-    rc = image_controller.SignerTest(input_proto, output_proto,
-                                     self.mock_error_config)
+        rc = image_controller.SignerTest(
+            input_proto, output_proto, self.mock_error_config
+        )
 
-    patch.assert_not_called()
-    self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
+        patch.assert_not_called()
+        self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
 
-  def testSignerTestNoImage(self):
-    """Test function argument validation."""
-    input_proto = image_pb2.TestImageRequest()
-    output_proto = image_pb2.TestImageResult()
+    def testSignerTestNoImage(self):
+        """Test function argument validation."""
+        input_proto = image_pb2.TestImageRequest()
+        output_proto = image_pb2.TestImageResult()
 
-    # Nothing provided.
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.SignerTest(input_proto, output_proto, self.api_config)
+        # Nothing provided.
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.SignerTest(
+                input_proto, output_proto, self.api_config
+            )
 
-  def testSignerTestSuccess(self):
-    """Test successful call handling."""
-    self.PatchObject(image_lib, 'SecurityTest', return_value=True)
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    output_proto = image_pb2.TestImageResult()
+    def testSignerTestSuccess(self):
+        """Test successful call handling."""
+        self.PatchObject(image_lib, "SecurityTest", return_value=True)
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        output_proto = image_pb2.TestImageResult()
 
-    image_controller.SignerTest(input_proto, output_proto, self.api_config)
+        image_controller.SignerTest(input_proto, output_proto, self.api_config)
 
-  def testSignerTestFailure(self):
-    """Test function output tests."""
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    output_proto = image_pb2.TestImageResult()
+    def testSignerTestFailure(self):
+        """Test function output tests."""
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        output_proto = image_pb2.TestImageResult()
 
-    self.PatchObject(image_lib, 'SecurityTest', return_value=False)
-    image_controller.SignerTest(input_proto, output_proto, self.api_config)
-    self.assertFalse(output_proto.success)
+        self.PatchObject(image_lib, "SecurityTest", return_value=False)
+        image_controller.SignerTest(input_proto, output_proto, self.api_config)
+        self.assertFalse(output_proto.success)
 
 
-class ImageTestTest(cros_test_lib.MockTempDirTestCase,
-                    api_config.ApiConfigMixin):
-  """Image test tests."""
+class ImageTestTest(
+    cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin
+):
+    """Image test tests."""
 
-  def setUp(self):
-    self.image_path = os.path.join(self.tempdir, 'image.bin')
-    self.board = 'board'
-    self.result_directory = os.path.join(self.tempdir, 'results')
+    def setUp(self):
+        self.image_path = os.path.join(self.tempdir, "image.bin")
+        self.board = "board"
+        self.result_directory = os.path.join(self.tempdir, "results")
 
-    osutils.SafeMakedirs(self.result_directory)
-    osutils.Touch(self.image_path)
+        osutils.SafeMakedirs(self.result_directory)
+        osutils.Touch(self.image_path)
 
-  def testValidateOnly(self):
-    """Sanity check that a validate only call does not execute any logic."""
-    patch = self.PatchObject(image_service, 'Test')
+    def testValidateOnly(self):
+        """Sanity check that a validate only call does not execute any logic."""
+        patch = self.PatchObject(image_service, "Test")
 
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    input_proto.build_target.name = self.board
-    input_proto.result.directory = self.result_directory
-    output_proto = image_pb2.TestImageResult()
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        input_proto.build_target.name = self.board
+        input_proto.result.directory = self.result_directory
+        output_proto = image_pb2.TestImageResult()
 
-    image_controller.Test(input_proto, output_proto, self.validate_only_config)
-    patch.assert_not_called()
+        image_controller.Test(
+            input_proto, output_proto, self.validate_only_config
+        )
+        patch.assert_not_called()
 
-  def testMockCall(self):
-    """Test that mock call does not execute any logic, returns mocked value."""
-    patch = self.PatchObject(image_service, 'Test')
+    def testMockCall(self):
+        """Test that mock call does not execute any logic, returns mocked value."""
+        patch = self.PatchObject(image_service, "Test")
 
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    input_proto.build_target.name = self.board
-    input_proto.result.directory = self.result_directory
-    output_proto = image_pb2.TestImageResult()
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        input_proto.build_target.name = self.board
+        input_proto.result.directory = self.result_directory
+        output_proto = image_pb2.TestImageResult()
 
-    image_controller.Test(input_proto, output_proto, self.mock_call_config)
-    patch.assert_not_called()
-    self.assertEqual(output_proto.success, True)
+        image_controller.Test(input_proto, output_proto, self.mock_call_config)
+        patch.assert_not_called()
+        self.assertEqual(output_proto.success, True)
 
-  def testMockError(self):
-    """Test that mock call does not execute any logic, returns error."""
-    patch = self.PatchObject(image_service, 'Test')
+    def testMockError(self):
+        """Test that mock call does not execute any logic, returns error."""
+        patch = self.PatchObject(image_service, "Test")
 
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    input_proto.build_target.name = self.board
-    input_proto.result.directory = self.result_directory
-    output_proto = image_pb2.TestImageResult()
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        input_proto.build_target.name = self.board
+        input_proto.result.directory = self.result_directory
+        output_proto = image_pb2.TestImageResult()
 
-    rc = image_controller.Test(input_proto, output_proto,
-                               self.mock_error_config)
-    patch.assert_not_called()
-    self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
+        rc = image_controller.Test(
+            input_proto, output_proto, self.mock_error_config
+        )
+        patch.assert_not_called()
+        self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
 
-  def testTestArgumentValidation(self):
-    """Test function argument validation tests."""
-    self.PatchObject(image_service, 'Test', return_value=True)
-    input_proto = image_pb2.TestImageRequest()
-    output_proto = image_pb2.TestImageResult()
+    def testTestArgumentValidation(self):
+        """Test function argument validation tests."""
+        self.PatchObject(image_service, "Test", return_value=True)
+        input_proto = image_pb2.TestImageRequest()
+        output_proto = image_pb2.TestImageResult()
 
-    # Nothing provided.
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.Test(input_proto, output_proto, self.api_config)
+        # Nothing provided.
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.Test(input_proto, output_proto, self.api_config)
 
-    # Just one argument.
-    input_proto.build_target.name = self.board
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.Test(input_proto, output_proto, self.api_config)
+        # Just one argument.
+        input_proto.build_target.name = self.board
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.Test(input_proto, output_proto, self.api_config)
 
-    # Two arguments provided.
-    input_proto.result.directory = self.result_directory
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.Test(input_proto, output_proto, self.api_config)
+        # Two arguments provided.
+        input_proto.result.directory = self.result_directory
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.Test(input_proto, output_proto, self.api_config)
 
-    # Invalid image path.
-    input_proto.image.path = '/invalid/image/path'
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.Test(input_proto, output_proto, self.api_config)
+        # Invalid image path.
+        input_proto.image.path = "/invalid/image/path"
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.Test(input_proto, output_proto, self.api_config)
 
-    # All valid arguments.
-    input_proto.image.path = self.image_path
-    image_controller.Test(input_proto, output_proto, self.api_config)
+        # All valid arguments.
+        input_proto.image.path = self.image_path
+        image_controller.Test(input_proto, output_proto, self.api_config)
 
-  def testTestOutputHandling(self):
-    """Test function output tests."""
-    input_proto = image_pb2.TestImageRequest()
-    input_proto.image.path = self.image_path
-    input_proto.build_target.name = self.board
-    input_proto.result.directory = self.result_directory
-    output_proto = image_pb2.TestImageResult()
+    def testTestOutputHandling(self):
+        """Test function output tests."""
+        input_proto = image_pb2.TestImageRequest()
+        input_proto.image.path = self.image_path
+        input_proto.build_target.name = self.board
+        input_proto.result.directory = self.result_directory
+        output_proto = image_pb2.TestImageResult()
 
-    self.PatchObject(image_service, 'Test', return_value=True)
-    image_controller.Test(input_proto, output_proto, self.api_config)
-    self.assertTrue(output_proto.success)
+        self.PatchObject(image_service, "Test", return_value=True)
+        image_controller.Test(input_proto, output_proto, self.api_config)
+        self.assertTrue(output_proto.success)
 
-    self.PatchObject(image_service, 'Test', return_value=False)
-    image_controller.Test(input_proto, output_proto, self.api_config)
-    self.assertFalse(output_proto.success)
+        self.PatchObject(image_service, "Test", return_value=False)
+        image_controller.Test(input_proto, output_proto, self.api_config)
+        self.assertFalse(output_proto.success)
 
 
 class PushImageTest(api_config.ApiConfigMixin):
-  """Push image test."""
+    """Push image test."""
 
-  def _GetRequest(
-      self,
-      gs_image_dir='gs://chromeos-image-archive/atlas-release/R89-13604.0.0',
-      build_target_name='atlas',
-      profile='foo',
-      sign_types=None,
-      dryrun=True,
-      channels=None):
-    return image_pb2.PushImageRequest(
-        gs_image_dir=gs_image_dir,
-        sysroot=sysroot_pb2.Sysroot(
-            build_target=common_pb2.BuildTarget(name=build_target_name)),
-        profile=common_pb2.Profile(name=profile),
-        sign_types=sign_types,
-        dryrun=dryrun,
-        channels=channels)
+    def _GetRequest(
+        self,
+        gs_image_dir="gs://chromeos-image-archive/atlas-release/R89-13604.0.0",
+        build_target_name="atlas",
+        profile="foo",
+        sign_types=None,
+        dryrun=True,
+        channels=None,
+    ):
+        return image_pb2.PushImageRequest(
+            gs_image_dir=gs_image_dir,
+            sysroot=sysroot_pb2.Sysroot(
+                build_target=common_pb2.BuildTarget(name=build_target_name)
+            ),
+            profile=common_pb2.Profile(name=profile),
+            sign_types=sign_types,
+            dryrun=dryrun,
+            channels=channels,
+        )
 
-  def _GetResponse(self):
-    return image_pb2.PushImageRequest()
+    def _GetResponse(self):
+        return image_pb2.PushImageRequest()
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={})
-  def testValidateOnly(self, MockPushImage):
-    """Check that a validate only call does not execute any logic."""
-    req = self._GetRequest(sign_types=[
-        common_pb2.IMAGE_TYPE_RECOVERY, common_pb2.IMAGE_TYPE_FACTORY,
-        common_pb2.IMAGE_TYPE_FIRMWARE, common_pb2.IMAGE_TYPE_ACCESSORY_USBPD,
-        common_pb2.IMAGE_TYPE_ACCESSORY_RWSIG, common_pb2.IMAGE_TYPE_BASE,
-        common_pb2.IMAGE_TYPE_GSC_FIRMWARE, common_pb2.IMAGE_TYPE_HPS_FIRMWARE,
-    ])
-    rc = image_controller.PushImage(req, self.NewResponse(),
-                                    self.validate_only_config)
-    MockPushImage.assert_not_called()
-    self.assertEqual(rc, controller.RETURN_CODE_VALID_INPUT)
+    @mock.patch.object(pushimage, "PushImage", return_value={})
+    def testValidateOnly(self, MockPushImage):
+        """Check that a validate only call does not execute any logic."""
+        req = self._GetRequest(
+            sign_types=[
+                common_pb2.IMAGE_TYPE_RECOVERY,
+                common_pb2.IMAGE_TYPE_FACTORY,
+                common_pb2.IMAGE_TYPE_FIRMWARE,
+                common_pb2.IMAGE_TYPE_ACCESSORY_USBPD,
+                common_pb2.IMAGE_TYPE_ACCESSORY_RWSIG,
+                common_pb2.IMAGE_TYPE_BASE,
+                common_pb2.IMAGE_TYPE_GSC_FIRMWARE,
+                common_pb2.IMAGE_TYPE_HPS_FIRMWARE,
+            ]
+        )
+        rc = image_controller.PushImage(
+            req, self.NewResponse(), self.validate_only_config
+        )
+        MockPushImage.assert_not_called()
+        self.assertEqual(rc, controller.RETURN_CODE_VALID_INPUT)
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={})
-  def testValidateOnlyInvalid(self, MockPushImage):
-    """Check that validate call rejects invalid sign types."""
-    # Pass unsupported image type.
-    req = self._GetRequest(sign_types=[common_pb2.IMAGE_TYPE_DLC])
-    rc = image_controller.PushImage(req, self._GetResponse(),
-                                    self.validate_only_config)
-    MockPushImage.assert_not_called()
-    self.assertEqual(rc, controller.RETURN_CODE_INVALID_INPUT)
+    @mock.patch.object(pushimage, "PushImage", return_value={})
+    def testValidateOnlyInvalid(self, MockPushImage):
+        """Check that validate call rejects invalid sign types."""
+        # Pass unsupported image type.
+        req = self._GetRequest(sign_types=[common_pb2.IMAGE_TYPE_DLC])
+        rc = image_controller.PushImage(
+            req, self._GetResponse(), self.validate_only_config
+        )
+        MockPushImage.assert_not_called()
+        self.assertEqual(rc, controller.RETURN_CODE_INVALID_INPUT)
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={})
-  def testMockCall(self, MockPushImage):
-    """Test that mock call does not execute any logic, returns mocked value."""
-    rc = image_controller.PushImage(self._GetRequest(), self._GetResponse(),
-                                    self.mock_call_config)
-    MockPushImage.assert_not_called()
-    self.assertEqual(controller.RETURN_CODE_SUCCESS, rc)
+    @mock.patch.object(pushimage, "PushImage", return_value={})
+    def testMockCall(self, MockPushImage):
+        """Test that mock call does not execute any logic, returns mocked value."""
+        rc = image_controller.PushImage(
+            self._GetRequest(), self._GetResponse(), self.mock_call_config
+        )
+        MockPushImage.assert_not_called()
+        self.assertEqual(controller.RETURN_CODE_SUCCESS, rc)
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={})
-  def testMockError(self, MockPushImage):
-    """Test that mock call does not execute any logic, returns error."""
-    rc = image_controller.PushImage(self._GetRequest(), self._GetResponse(),
-                                    self.mock_error_config)
-    MockPushImage.assert_not_called()
-    self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
+    @mock.patch.object(pushimage, "PushImage", return_value={})
+    def testMockError(self, MockPushImage):
+        """Test that mock call does not execute any logic, returns error."""
+        rc = image_controller.PushImage(
+            self._GetRequest(), self._GetResponse(), self.mock_error_config
+        )
+        MockPushImage.assert_not_called()
+        self.assertEqual(controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY, rc)
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={})
-  def testNoBuildTarget(self, _):
-    """Test no build target given fails."""
-    request = self._GetRequest(build_target_name='')
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.PushImage(request, self._GetResponse(), self.api_config)
+    @mock.patch.object(pushimage, "PushImage", return_value={})
+    def testNoBuildTarget(self, _):
+        """Test no build target given fails."""
+        request = self._GetRequest(build_target_name="")
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.PushImage(
+                request, self._GetResponse(), self.api_config
+            )
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={})
-  def testNoGsImageDir(self, _):
-    """Test no image dir given fails."""
-    request = self._GetRequest(gs_image_dir='')
-    with self.assertRaises(cros_build_lib.DieSystemExit):
-      image_controller.PushImage(request, self._GetResponse(), self.api_config)
+    @mock.patch.object(pushimage, "PushImage", return_value={})
+    def testNoGsImageDir(self, _):
+        """Test no image dir given fails."""
+        request = self._GetRequest(gs_image_dir="")
+        with self.assertRaises(cros_build_lib.DieSystemExit):
+            image_controller.PushImage(
+                request, self._GetResponse(), self.api_config
+            )
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={})
-  def testCallCorrect(self, MockPushImage):
-    """Check that a call is called with the correct parameters."""
-    request = self._GetRequest(
-        dryrun=False, profile='', sign_types=[common_pb2.IMAGE_TYPE_RECOVERY],
-        channels=[common_pb2.CHANNEL_DEV, common_pb2.CHANNEL_CANARY])
-    request.dest_bucket = 'gs://foo'
-    image_controller.PushImage(request, self._GetResponse(), self.api_config)
-    MockPushImage.assert_called_with(
-        request.gs_image_dir,
-        request.sysroot.build_target.name,
-        dry_run=request.dryrun,
-        sign_types=['recovery'],
-        dest_bucket=request.dest_bucket,
-        force_channels=['dev', 'canary'])
+    @mock.patch.object(pushimage, "PushImage", return_value={})
+    def testCallCorrect(self, MockPushImage):
+        """Check that a call is called with the correct parameters."""
+        request = self._GetRequest(
+            dryrun=False,
+            profile="",
+            sign_types=[common_pb2.IMAGE_TYPE_RECOVERY],
+            channels=[common_pb2.CHANNEL_DEV, common_pb2.CHANNEL_CANARY],
+        )
+        request.dest_bucket = "gs://foo"
+        image_controller.PushImage(
+            request, self._GetResponse(), self.api_config
+        )
+        MockPushImage.assert_called_with(
+            request.gs_image_dir,
+            request.sysroot.build_target.name,
+            dry_run=request.dryrun,
+            sign_types=["recovery"],
+            dest_bucket=request.dest_bucket,
+            force_channels=["dev", "canary"],
+        )
 
-  @mock.patch.object(pushimage, 'PushImage', return_value={
-      'dev': ['gs://dev/instr1', 'gs://dev/instr2'],
-      'canary': ['gs://canary/instr1']})
-  def testOutput(self, _):
-    """Check that a call populates the response object."""
-    request = self._GetRequest(
-        profile='', sign_types=[common_pb2.IMAGE_TYPE_RECOVERY],
-        channels=[common_pb2.CHANNEL_DEV, common_pb2.CHANNEL_CANARY])
-    request.dest_bucket = 'gs://foo'
-    response = self._GetResponse()
-    image_controller.PushImage(request, response, self.api_config)
-    self.assertEqual(
-        sorted([i.instructions_file_path for i in response.instructions]),
-        sorted(['gs://dev/instr1', 'gs://dev/instr2', 'gs://canary/instr1']))
+    @mock.patch.object(
+        pushimage,
+        "PushImage",
+        return_value={
+            "dev": ["gs://dev/instr1", "gs://dev/instr2"],
+            "canary": ["gs://canary/instr1"],
+        },
+    )
+    def testOutput(self, _):
+        """Check that a call populates the response object."""
+        request = self._GetRequest(
+            profile="",
+            sign_types=[common_pb2.IMAGE_TYPE_RECOVERY],
+            channels=[common_pb2.CHANNEL_DEV, common_pb2.CHANNEL_CANARY],
+        )
+        request.dest_bucket = "gs://foo"
+        response = self._GetResponse()
+        image_controller.PushImage(request, response, self.api_config)
+        self.assertEqual(
+            sorted([i.instructions_file_path for i in response.instructions]),
+            sorted(
+                ["gs://dev/instr1", "gs://dev/instr2", "gs://canary/instr1"]
+            ),
+        )
 
-  def testCallSucceeds(self, _):
-    """Check that a (dry run) call is made successfully."""
-    request = self._GetRequest(sign_types=[common_pb2.IMAGE_TYPE_RECOVERY])
-    rc = image_controller.PushImage(
-        request,
-        self._GetResponse(),
-        self.api_config)
-    self.assertEqual(rc, controller.RETURN_CODE_SUCCESS)
+    def testCallSucceeds(self, _):
+        """Check that a (dry run) call is made successfully."""
+        request = self._GetRequest(sign_types=[common_pb2.IMAGE_TYPE_RECOVERY])
+        rc = image_controller.PushImage(
+            request, self._GetResponse(), self.api_config
+        )
+        self.assertEqual(rc, controller.RETURN_CODE_SUCCESS)
 
-  def testCallFailsWithBadImageDir(self):
-    """Check that a (dry run) call fails when given a bad gs_image_dir."""
-    request = self._GetRequest(gs_image_dir='foo')
-    rc = image_controller.PushImage(request, self._GetResponse, self.api_config)
-    self.assertEqual(rc, controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY)
+    def testCallFailsWithBadImageDir(self):
+        """Check that a (dry run) call fails when given a bad gs_image_dir."""
+        request = self._GetRequest(gs_image_dir="foo")
+        rc = image_controller.PushImage(
+            request, self._GetResponse, self.api_config
+        )
+        self.assertEqual(rc, controller.RETURN_CODE_COMPLETED_UNSUCCESSFULLY)