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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/toolchain_unittest.py b/api/controller/toolchain_unittest.py
index 8a7dabe..63288b9 100644
--- a/api/controller/toolchain_unittest.py
+++ b/api/controller/toolchain_unittest.py
@@ -24,315 +24,417 @@
 # pylint: disable=protected-access
 
 
-class UpdateEbuildWithAFDOArtifactsTest(cros_test_lib.MockTestCase,
-                                        api_config.ApiConfigMixin):
-  """Unittests for UpdateEbuildWithAFDOArtifacts."""
+class UpdateEbuildWithAFDOArtifactsTest(
+    cros_test_lib.MockTestCase, api_config.ApiConfigMixin
+):
+    """Unittests for UpdateEbuildWithAFDOArtifacts."""
 
-  @staticmethod
-  def mock_die(message, *args):
-    raise cros_build_lib.DieSystemExit(message % args)
+    @staticmethod
+    def mock_die(message, *args):
+        raise cros_build_lib.DieSystemExit(message % args)
 
-  def setUp(self):
-    self.board = 'board'
-    self.response = toolchain_pb2.VerifyAFDOArtifactsResponse()
-    self.invalid_artifact_type = toolchain_pb2.BENCHMARK_AFDO
-    self.PatchObject(cros_build_lib, 'Die', new=self.mock_die)
+    def setUp(self):
+        self.board = "board"
+        self.response = toolchain_pb2.VerifyAFDOArtifactsResponse()
+        self.invalid_artifact_type = toolchain_pb2.BENCHMARK_AFDO
+        self.PatchObject(cros_build_lib, "Die", new=self.mock_die)
 
-  def _GetRequest(self, build_target=None, artifact_type=None):
-    return toolchain_pb2.VerifyAFDOArtifactsRequest(
-        build_target={'name': build_target},
-        artifact_type=artifact_type,
-    )
+    def _GetRequest(self, build_target=None, artifact_type=None):
+        return toolchain_pb2.VerifyAFDOArtifactsRequest(
+            build_target={"name": build_target},
+            artifact_type=artifact_type,
+        )
 
 
-class PrepareForBuildTest(cros_test_lib.MockTempDirTestCase,
-                          api_config.ApiConfigMixin):
-  """Unittests for PrepareForBuild."""
+class PrepareForBuildTest(
+    cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin
+):
+    """Unittests for PrepareForBuild."""
 
-  def setUp(self):
-    self.response = toolchain_pb2.PrepareForToolchainBuildResponse()
-    self.prep = self.PatchObject(
-        toolchain_util,
-        'PrepareForBuild',
-        return_value=toolchain_util.PrepareForBuildReturn.NEEDED)
-    self.bundle = self.PatchObject(
-        toolchain_util, 'BundleArtifacts', return_value=[])
-    self.PatchObject(
-        toolchain, '_TOOLCHAIN_ARTIFACT_HANDLERS', {
-            BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE:
-                toolchain._Handlers('UnverifiedChromeLlvmOrderfile', self.prep,
-                                    self.bundle),
-        })
+    def setUp(self):
+        self.response = toolchain_pb2.PrepareForToolchainBuildResponse()
+        self.prep = self.PatchObject(
+            toolchain_util,
+            "PrepareForBuild",
+            return_value=toolchain_util.PrepareForBuildReturn.NEEDED,
+        )
+        self.bundle = self.PatchObject(
+            toolchain_util, "BundleArtifacts", return_value=[]
+        )
+        self.PatchObject(
+            toolchain,
+            "_TOOLCHAIN_ARTIFACT_HANDLERS",
+            {
+                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE: toolchain._Handlers(
+                    "UnverifiedChromeLlvmOrderfile", self.prep, self.bundle
+                ),
+            },
+        )
 
-  def _GetRequest(self,
-                  artifact_types=None,
-                  input_artifacts=None,
-                  additional_args=None):
-    chroot = common_pb2.Chroot(path=str(self.tempdir))
-    sysroot = sysroot_pb2.Sysroot(
-        path='/build/board', build_target=common_pb2.BuildTarget(name='board'))
-    return toolchain_pb2.PrepareForToolchainBuildRequest(
-        artifact_types=artifact_types,
-        chroot=chroot,
-        sysroot=sysroot,
-        input_artifacts=input_artifacts,
-        additional_args=additional_args)
+    def _GetRequest(
+        self, artifact_types=None, input_artifacts=None, additional_args=None
+    ):
+        chroot = common_pb2.Chroot(path=str(self.tempdir))
+        sysroot = sysroot_pb2.Sysroot(
+            path="/build/board",
+            build_target=common_pb2.BuildTarget(name="board"),
+        )
+        return toolchain_pb2.PrepareForToolchainBuildRequest(
+            artifact_types=artifact_types,
+            chroot=chroot,
+            sysroot=sysroot,
+            input_artifacts=input_artifacts,
+            additional_args=additional_args,
+        )
 
-  def testRaisesForUnknown(self):
-    request = self._GetRequest([BuilderConfig.Artifacts.IMAGE_ARCHIVES])
-    self.assertRaises(KeyError, toolchain.PrepareForBuild, request,
-                      self.response, self.api_config)
+    def testRaisesForUnknown(self):
+        request = self._GetRequest([BuilderConfig.Artifacts.IMAGE_ARCHIVES])
+        self.assertRaises(
+            KeyError,
+            toolchain.PrepareForBuild,
+            request,
+            self.response,
+            self.api_config,
+        )
 
-  def testAcceptsNone(self):
-    request = toolchain_pb2.PrepareForToolchainBuildRequest(
-        artifact_types=[
-            BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
-        ],
-        chroot=None,
-        sysroot=None)
-    toolchain.PrepareForBuild(request, self.response, self.api_config)
-    self.prep.assert_called_once_with('UnverifiedChromeLlvmOrderfile', None, '',
-                                      '', {}, {})
+    def testAcceptsNone(self):
+        request = toolchain_pb2.PrepareForToolchainBuildRequest(
+            artifact_types=[
+                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
+            ],
+            chroot=None,
+            sysroot=None,
+        )
+        toolchain.PrepareForBuild(request, self.response, self.api_config)
+        self.prep.assert_called_once_with(
+            "UnverifiedChromeLlvmOrderfile", None, "", "", {}, {}
+        )
 
-  def testHandlesUnknownInputArtifacts(self):
-    request = toolchain_pb2.PrepareForToolchainBuildRequest(
-        artifact_types=[
-            BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
-        ],
-        chroot=None,
-        sysroot=None,
-        input_artifacts=[
-            BuilderConfig.Artifacts.InputArtifactInfo(
-                input_artifact_type=BuilderConfig.Artifacts.IMAGE_ZIP,
-                input_artifact_gs_locations=['path1']),
-        ])
-    toolchain.PrepareForBuild(request, self.response, self.api_config)
-    self.prep.assert_called_once_with('UnverifiedChromeLlvmOrderfile', None, '',
-                                      '', {}, {})
+    def testHandlesUnknownInputArtifacts(self):
+        request = toolchain_pb2.PrepareForToolchainBuildRequest(
+            artifact_types=[
+                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
+            ],
+            chroot=None,
+            sysroot=None,
+            input_artifacts=[
+                BuilderConfig.Artifacts.InputArtifactInfo(
+                    input_artifact_type=BuilderConfig.Artifacts.IMAGE_ZIP,
+                    input_artifact_gs_locations=["path1"],
+                ),
+            ],
+        )
+        toolchain.PrepareForBuild(request, self.response, self.api_config)
+        self.prep.assert_called_once_with(
+            "UnverifiedChromeLlvmOrderfile", None, "", "", {}, {}
+        )
 
-  def testPassesProfileInfo(self):
-    request = toolchain_pb2.PrepareForToolchainBuildRequest(
-        artifact_types=[
-            BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE],
-        chroot=None, sysroot=None, input_artifacts=[
-            BuilderConfig.Artifacts.InputArtifactInfo(
-                input_artifact_type=
-                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
-                input_artifact_gs_locations=['path1', 'path2']),
-            BuilderConfig.Artifacts.InputArtifactInfo(
-                input_artifact_type=
-                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
-                input_artifact_gs_locations=['path3']),
-        ],
-        profile_info=common_pb2.ArtifactProfileInfo(
-            chrome_cwp_profile='CWPVERSION'),
-    )
-    toolchain.PrepareForBuild(request, self.response, self.api_config)
-    self.prep.assert_called_once_with(
-        'UnverifiedChromeLlvmOrderfile', None, '', '', {
-            'UnverifiedChromeLlvmOrderfile':
-                ['gs://path1', 'gs://path2', 'gs://path3'],
-        }, {'chrome_cwp_profile': 'CWPVERSION'})
+    def testPassesProfileInfo(self):
+        request = toolchain_pb2.PrepareForToolchainBuildRequest(
+            artifact_types=[
+                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
+            ],
+            chroot=None,
+            sysroot=None,
+            input_artifacts=[
+                BuilderConfig.Artifacts.InputArtifactInfo(
+                    input_artifact_type=BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
+                    input_artifact_gs_locations=["path1", "path2"],
+                ),
+                BuilderConfig.Artifacts.InputArtifactInfo(
+                    input_artifact_type=BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
+                    input_artifact_gs_locations=["path3"],
+                ),
+            ],
+            profile_info=common_pb2.ArtifactProfileInfo(
+                chrome_cwp_profile="CWPVERSION"
+            ),
+        )
+        toolchain.PrepareForBuild(request, self.response, self.api_config)
+        self.prep.assert_called_once_with(
+            "UnverifiedChromeLlvmOrderfile",
+            None,
+            "",
+            "",
+            {
+                "UnverifiedChromeLlvmOrderfile": [
+                    "gs://path1",
+                    "gs://path2",
+                    "gs://path3",
+                ],
+            },
+            {"chrome_cwp_profile": "CWPVERSION"},
+        )
 
-  def testPassesProfileInfoAfdoRelease(self):
-    request = toolchain_pb2.PrepareForToolchainBuildRequest(
-        artifact_types=[
-            BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE],
-        chroot=None, sysroot=None, input_artifacts=[
-            BuilderConfig.Artifacts.InputArtifactInfo(
-                input_artifact_type=
-                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
-                input_artifact_gs_locations=['path1', 'path2']),
-            BuilderConfig.Artifacts.InputArtifactInfo(
-                input_artifact_type=
-                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
-                input_artifact_gs_locations=['path3']),
-        ],
-        profile_info=common_pb2.ArtifactProfileInfo(
-            afdo_release=common_pb2.AfdoRelease(
-                chrome_cwp_profile='CWPVERSION',
-                image_build_id=1234)),
-    )
-    toolchain.PrepareForBuild(request, self.response, self.api_config)
-    self.prep.assert_called_once_with(
-        'UnverifiedChromeLlvmOrderfile', None, '', '', {
-            'UnverifiedChromeLlvmOrderfile':
-                ['gs://path1', 'gs://path2', 'gs://path3'],
-        }, {
-            'chrome_cwp_profile': 'CWPVERSION',
-            'image_build_id': 1234
-        })
+    def testPassesProfileInfoAfdoRelease(self):
+        request = toolchain_pb2.PrepareForToolchainBuildRequest(
+            artifact_types=[
+                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
+            ],
+            chroot=None,
+            sysroot=None,
+            input_artifacts=[
+                BuilderConfig.Artifacts.InputArtifactInfo(
+                    input_artifact_type=BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
+                    input_artifact_gs_locations=["path1", "path2"],
+                ),
+                BuilderConfig.Artifacts.InputArtifactInfo(
+                    input_artifact_type=BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
+                    input_artifact_gs_locations=["path3"],
+                ),
+            ],
+            profile_info=common_pb2.ArtifactProfileInfo(
+                afdo_release=common_pb2.AfdoRelease(
+                    chrome_cwp_profile="CWPVERSION", image_build_id=1234
+                )
+            ),
+        )
+        toolchain.PrepareForBuild(request, self.response, self.api_config)
+        self.prep.assert_called_once_with(
+            "UnverifiedChromeLlvmOrderfile",
+            None,
+            "",
+            "",
+            {
+                "UnverifiedChromeLlvmOrderfile": [
+                    "gs://path1",
+                    "gs://path2",
+                    "gs://path3",
+                ],
+            },
+            {"chrome_cwp_profile": "CWPVERSION", "image_build_id": 1234},
+        )
 
-  def testHandlesDuplicateInputArtifacts(self):
-    request = toolchain_pb2.PrepareForToolchainBuildRequest(
-        artifact_types=[
-            BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE],
-        chroot=None, sysroot=None, input_artifacts=[
-            BuilderConfig.Artifacts.InputArtifactInfo(
-                input_artifact_type=
-                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
-                input_artifact_gs_locations=['path1', 'path2']),
-            BuilderConfig.Artifacts.InputArtifactInfo(
-                input_artifact_type=
-                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
-                input_artifact_gs_locations=['path3']),
-        ])
-    toolchain.PrepareForBuild(request, self.response, self.api_config)
-    self.prep.assert_called_once_with(
-        'UnverifiedChromeLlvmOrderfile', None, '', '', {
-            'UnverifiedChromeLlvmOrderfile':
-                ['gs://path1', 'gs://path2', 'gs://path3'],
-        }, {})
+    def testHandlesDuplicateInputArtifacts(self):
+        request = toolchain_pb2.PrepareForToolchainBuildRequest(
+            artifact_types=[
+                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
+            ],
+            chroot=None,
+            sysroot=None,
+            input_artifacts=[
+                BuilderConfig.Artifacts.InputArtifactInfo(
+                    input_artifact_type=BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
+                    input_artifact_gs_locations=["path1", "path2"],
+                ),
+                BuilderConfig.Artifacts.InputArtifactInfo(
+                    input_artifact_type=BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE,
+                    input_artifact_gs_locations=["path3"],
+                ),
+            ],
+        )
+        toolchain.PrepareForBuild(request, self.response, self.api_config)
+        self.prep.assert_called_once_with(
+            "UnverifiedChromeLlvmOrderfile",
+            None,
+            "",
+            "",
+            {
+                "UnverifiedChromeLlvmOrderfile": [
+                    "gs://path1",
+                    "gs://path2",
+                    "gs://path3",
+                ],
+            },
+            {},
+        )
 
 
-class BundleToolchainTest(cros_test_lib.MockTempDirTestCase,
-                          api_config.ApiConfigMixin):
-  """Unittests for BundleToolchain."""
+class BundleToolchainTest(
+    cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin
+):
+    """Unittests for BundleToolchain."""
 
-  def setUp(self):
-    self.response = toolchain_pb2.BundleToolchainResponse()
-    self.prep = self.PatchObject(
-        toolchain_util,
-        'PrepareForBuild',
-        return_value=toolchain_util.PrepareForBuildReturn.NEEDED)
-    self.bundle = self.PatchObject(
-        toolchain_util, 'BundleArtifacts', return_value=[])
-    self.PatchObject(
-        toolchain, '_TOOLCHAIN_ARTIFACT_HANDLERS', {
-            BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE:
-                toolchain._Handlers('UnverifiedChromeLlvmOrderfile', self.prep,
-                                    self.bundle),
-        })
-    osutils.WriteFile(os.path.join(self.tempdir, 'artifact.txt'), 'test')
-    osutils.Touch(os.path.join(self.tempdir, 'empty'))
+    def setUp(self):
+        self.response = toolchain_pb2.BundleToolchainResponse()
+        self.prep = self.PatchObject(
+            toolchain_util,
+            "PrepareForBuild",
+            return_value=toolchain_util.PrepareForBuildReturn.NEEDED,
+        )
+        self.bundle = self.PatchObject(
+            toolchain_util, "BundleArtifacts", return_value=[]
+        )
+        self.PatchObject(
+            toolchain,
+            "_TOOLCHAIN_ARTIFACT_HANDLERS",
+            {
+                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE: toolchain._Handlers(
+                    "UnverifiedChromeLlvmOrderfile", self.prep, self.bundle
+                ),
+            },
+        )
+        osutils.WriteFile(os.path.join(self.tempdir, "artifact.txt"), "test")
+        osutils.Touch(os.path.join(self.tempdir, "empty"))
 
-  def _GetRequest(self, artifact_types=None):
-    chroot = common_pb2.Chroot(path=str(self.tempdir))
-    sysroot = sysroot_pb2.Sysroot(
-        path='/build/board', build_target=common_pb2.BuildTarget(name='board'))
-    return toolchain_pb2.BundleToolchainRequest(
-        chroot=chroot,
-        sysroot=sysroot,
-        output_dir=str(self.tempdir),
-        artifact_types=artifact_types,
-    )
+    def _GetRequest(self, artifact_types=None):
+        chroot = common_pb2.Chroot(path=str(self.tempdir))
+        sysroot = sysroot_pb2.Sysroot(
+            path="/build/board",
+            build_target=common_pb2.BuildTarget(name="board"),
+        )
+        return toolchain_pb2.BundleToolchainRequest(
+            chroot=chroot,
+            sysroot=sysroot,
+            output_dir=str(self.tempdir),
+            artifact_types=artifact_types,
+        )
 
-  def testRaisesForUnknown(self):
-    request = self._GetRequest([BuilderConfig.Artifacts.IMAGE_ARCHIVES])
-    self.assertEqual(
-        controller.RETURN_CODE_UNRECOVERABLE,
-        toolchain.BundleArtifacts(request, self.response, self.api_config))
+    def testRaisesForUnknown(self):
+        request = self._GetRequest([BuilderConfig.Artifacts.IMAGE_ARCHIVES])
+        self.assertEqual(
+            controller.RETURN_CODE_UNRECOVERABLE,
+            toolchain.BundleArtifacts(request, self.response, self.api_config),
+        )
 
-  def testValidateOnly(self):
-    """Sanity check that a validate only call does not execute any logic."""
-    request = self._GetRequest(
-        [BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE])
-    toolchain.BundleArtifacts(request, self.response, self.validate_only_config)
-    self.bundle.assert_not_called()
+    def testValidateOnly(self):
+        """Sanity check that a validate only call does not execute any logic."""
+        request = self._GetRequest(
+            [BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE]
+        )
+        toolchain.BundleArtifacts(
+            request, self.response, self.validate_only_config
+        )
+        self.bundle.assert_not_called()
 
-  def testSetsArtifactsInfo(self):
-    request = self._GetRequest(
-        [BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE])
-    self.bundle.return_value = ['artifact.txt', 'empty', 'does_not_exist']
-    toolchain.BundleArtifacts(request, self.response, self.api_config)
-    self.assertEqual(1, len(self.response.artifacts_info))
-    self.assertEqual(
-        self.response.artifacts_info[0],
-        toolchain_pb2.ArtifactInfo(
-            artifact_type=(
-                BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE),
-            artifacts=[
-                artifacts_pb2.Artifact(path=self.bundle.return_value[0])
-            ]))
+    def testSetsArtifactsInfo(self):
+        request = self._GetRequest(
+            [BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE]
+        )
+        self.bundle.return_value = ["artifact.txt", "empty", "does_not_exist"]
+        toolchain.BundleArtifacts(request, self.response, self.api_config)
+        self.assertEqual(1, len(self.response.artifacts_info))
+        self.assertEqual(
+            self.response.artifacts_info[0],
+            toolchain_pb2.ArtifactInfo(
+                artifact_type=(
+                    BuilderConfig.Artifacts.UNVERIFIED_CHROME_LLVM_ORDERFILE
+                ),
+                artifacts=[
+                    artifacts_pb2.Artifact(path=self.bundle.return_value[0])
+                ],
+            ),
+        )
 
 
-class GetUpdatedFilesTest(cros_test_lib.MockTempDirTestCase,
-                          api_config.ApiConfigMixin):
-  """Unittests for GetUpdatedFiles."""
+class GetUpdatedFilesTest(
+    cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin
+):
+    """Unittests for GetUpdatedFiles."""
 
-  def setUp(self):
-    self.response = toolchain_pb2.GetUpdatedFilesResponse()
-    self.artifact_path = '/any/path/to/metadata'
-    self.profile_info = common_pb2.ArtifactProfileInfo(kernel_version='4.4')
-    self.update = self.PatchObject(
-        toolchain_util, 'GetUpdatedFiles', return_value=([], ''))
+    def setUp(self):
+        self.response = toolchain_pb2.GetUpdatedFilesResponse()
+        self.artifact_path = "/any/path/to/metadata"
+        self.profile_info = common_pb2.ArtifactProfileInfo(kernel_version="4.4")
+        self.update = self.PatchObject(
+            toolchain_util, "GetUpdatedFiles", return_value=([], "")
+        )
 
-  def _GetRequest(self, uploaded_artifacts):
-    uploaded = []
-    for artifact_type, artifact_path, profile_info in uploaded_artifacts:
-      uploaded.append(
-          toolchain_pb2.GetUpdatedFilesRequest.UploadedArtifacts(
-              artifact_info=toolchain_pb2.ArtifactInfo(
-                  artifact_type=artifact_type,
-                  artifacts=[artifacts_pb2.Artifact(path=artifact_path)]),
-              profile_info=profile_info))
-    return toolchain_pb2.GetUpdatedFilesRequest(uploaded_artifacts=uploaded)
+    def _GetRequest(self, uploaded_artifacts):
+        uploaded = []
+        for artifact_type, artifact_path, profile_info in uploaded_artifacts:
+            uploaded.append(
+                toolchain_pb2.GetUpdatedFilesRequest.UploadedArtifacts(
+                    artifact_info=toolchain_pb2.ArtifactInfo(
+                        artifact_type=artifact_type,
+                        artifacts=[artifacts_pb2.Artifact(path=artifact_path)],
+                    ),
+                    profile_info=profile_info,
+                )
+            )
+        return toolchain_pb2.GetUpdatedFilesRequest(uploaded_artifacts=uploaded)
 
-  def testRaisesForUnknown(self):
-    request = self._GetRequest([
-        (BuilderConfig.Artifacts.UNVERIFIED_KERNEL_CWP_AFDO_FILE,
-         self.artifact_path, self.profile_info)
-    ])
-    self.assertEqual(
-        controller.RETURN_CODE_UNRECOVERABLE,
-        toolchain.GetUpdatedFiles(request, self.response, self.api_config))
+    def testRaisesForUnknown(self):
+        request = self._GetRequest(
+            [
+                (
+                    BuilderConfig.Artifacts.UNVERIFIED_KERNEL_CWP_AFDO_FILE,
+                    self.artifact_path,
+                    self.profile_info,
+                )
+            ]
+        )
+        self.assertEqual(
+            controller.RETURN_CODE_UNRECOVERABLE,
+            toolchain.GetUpdatedFiles(request, self.response, self.api_config),
+        )
 
-  def testValidateOnly(self):
-    """Sanity check that a validate only call does not execute any logic."""
-    request = self._GetRequest([
-        (BuilderConfig.Artifacts.VERIFIED_KERNEL_CWP_AFDO_FILE,
-         self.artifact_path, self.profile_info)
-    ])
-    toolchain.GetUpdatedFiles(request, self.response, self.validate_only_config)
+    def testValidateOnly(self):
+        """Sanity check that a validate only call does not execute any logic."""
+        request = self._GetRequest(
+            [
+                (
+                    BuilderConfig.Artifacts.VERIFIED_KERNEL_CWP_AFDO_FILE,
+                    self.artifact_path,
+                    self.profile_info,
+                )
+            ]
+        )
+        toolchain.GetUpdatedFiles(
+            request, self.response, self.validate_only_config
+        )
 
-  def testUpdateSuccess(self):
-    updated_file = '/path/to/updated_file'
-    self.update.return_value = ([updated_file], 'Commit Message')
-    request = self._GetRequest([
-        (BuilderConfig.Artifacts.VERIFIED_KERNEL_CWP_AFDO_FILE,
-         self.artifact_path, self.profile_info)
-    ])
-    toolchain.GetUpdatedFiles(request, self.response, self.api_config)
-    print(self.response.updated_files)
-    self.assertEqual(len(self.response.updated_files), 1)
-    self.assertEqual(
-        self.response.updated_files[0],
-        toolchain_pb2.GetUpdatedFilesResponse.UpdatedFile(path=updated_file),
-    )
-    self.assertIn('Commit Message', self.response.commit_message)
-    self.assertEqual(len(self.response.commit_footer), 0)
+    def testUpdateSuccess(self):
+        updated_file = "/path/to/updated_file"
+        self.update.return_value = ([updated_file], "Commit Message")
+        request = self._GetRequest(
+            [
+                (
+                    BuilderConfig.Artifacts.VERIFIED_KERNEL_CWP_AFDO_FILE,
+                    self.artifact_path,
+                    self.profile_info,
+                )
+            ]
+        )
+        toolchain.GetUpdatedFiles(request, self.response, self.api_config)
+        print(self.response.updated_files)
+        self.assertEqual(len(self.response.updated_files), 1)
+        self.assertEqual(
+            self.response.updated_files[0],
+            toolchain_pb2.GetUpdatedFilesResponse.UpdatedFile(
+                path=updated_file
+            ),
+        )
+        self.assertIn("Commit Message", self.response.commit_message)
+        self.assertEqual(len(self.response.commit_footer), 0)
 
 
-class GetToolchainsForBoardTest(cros_test_lib.MockTempDirTestCase,
-                                api_config.ApiConfigMixin):
-  """Unittests for GetToolchainsForBoard."""
+class GetToolchainsForBoardTest(
+    cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin
+):
+    """Unittests for GetToolchainsForBoard."""
 
-  def setUp(self):
-    self.response = toolchain_pb2.ToolchainsResponse()
+    def setUp(self):
+        self.response = toolchain_pb2.ToolchainsResponse()
 
-  def _GetRequest(self, board='betty-pi-arc'):
-    return toolchain_pb2.ToolchainsRequest(board=board)
+    def _GetRequest(self, board="betty-pi-arc"):
+        return toolchain_pb2.ToolchainsRequest(board=board)
 
-  def testValidateOnly(self):
-    """Confidence check that a validate only call does not execute any logic."""
-    request = self._GetRequest()
-    toolchain.GetToolchainsForBoard(request, self.response,
-                                    self.validate_only_config)
+    def testValidateOnly(self):
+        """Confidence check that a validate only call does not execute any logic."""
+        request = self._GetRequest()
+        toolchain.GetToolchainsForBoard(
+            request, self.response, self.validate_only_config
+        )
 
-  def testUpdateSuccess(self):
-    toolchain_info = {
-        'default-a': {'default': True},
-        'default-b': {'default': True},
-        'nondefault-a': {'default': False},
-        'nondefault-b': {'default': False},
-    }
-    self.PatchObject(toolchain_lib, 'GetToolchainsForBoard',
-                     return_value=toolchain_info)
+    def testUpdateSuccess(self):
+        toolchain_info = {
+            "default-a": {"default": True},
+            "default-b": {"default": True},
+            "nondefault-a": {"default": False},
+            "nondefault-b": {"default": False},
+        }
+        self.PatchObject(
+            toolchain_lib, "GetToolchainsForBoard", return_value=toolchain_info
+        )
 
-    request = self._GetRequest()
-    toolchain.GetToolchainsForBoard(request, self.response, self.api_config)
+        request = self._GetRequest()
+        toolchain.GetToolchainsForBoard(request, self.response, self.api_config)
 
-    self.assertEqual(self.response.default_toolchains,
-                     ['default-a', 'default-b'])
-    self.assertEqual(self.response.nondefault_toolchains,
-                     ['nondefault-a', 'nondefault-b'])
+        self.assertEqual(
+            self.response.default_toolchains, ["default-a", "default-b"]
+        )
+        self.assertEqual(
+            self.response.nondefault_toolchains,
+            ["nondefault-a", "nondefault-b"],
+        )