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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/firmware_unittest.py b/api/controller/firmware_unittest.py
index e84dbb9..1049c5a 100644
--- a/api/controller/firmware_unittest.py
+++ b/api/controller/firmware_unittest.py
@@ -17,82 +17,105 @@
 from chromite.lib import cros_test_lib
 
 
-class BuildAllFirmwareTestCase(cros_test_lib.MockTempDirTestCase,
-                               api_config.ApiConfigMixin):
-  """BuildAllFirmware tests."""
+class BuildAllFirmwareTestCase(
+    cros_test_lib.MockTempDirTestCase, api_config.ApiConfigMixin
+):
+    """BuildAllFirmware tests."""
 
-  def setUp(self):
-    self.chroot_path = '/path/to/chroot'
-    self.cros_build_run_patch = self.PatchObject(
-        cros_build_lib,
-        'run',
-        return_value=cros_build_lib.CompletedProcess(returncode=0))
+    def setUp(self):
+        self.chroot_path = "/path/to/chroot"
+        self.cros_build_run_patch = self.PatchObject(
+            cros_build_lib,
+            "run",
+            return_value=cros_build_lib.CompletedProcess(returncode=0),
+        )
 
-  def _GetInput(self,
-                chroot_path=None,
-                fw_location=common_pb2.PLATFORM_EC,
-                code_coverage=False):
-    """Helper for creating input message."""
-    proto = firmware_pb2.BuildAllFirmwareRequest(
-        firmware_location=fw_location,
-        chroot={'path': chroot_path},
-        code_coverage=code_coverage)
-    return proto
+    def _GetInput(
+        self,
+        chroot_path=None,
+        fw_location=common_pb2.PLATFORM_EC,
+        code_coverage=False,
+    ):
+        """Helper for creating input message."""
+        proto = firmware_pb2.BuildAllFirmwareRequest(
+            firmware_location=fw_location,
+            chroot={"path": chroot_path},
+            code_coverage=code_coverage,
+        )
+        return proto
 
-  def testBuildAllFirmware(self):
-    """Test invocation of endpoint by verifying call to cros_build_lib.run."""
-    for fw_loc in common_pb2.FwLocation.values():
-      fw_path = firmware.get_fw_loc(fw_loc)
-      if not fw_path:
-        continue
-      request = self._GetInput(chroot_path=self.chroot_path,
-                               fw_location=fw_loc,
-                               code_coverage=True)
-      # TODO(mmortensen): Consider refactoring firmware._call_entry code
-      # (putting the parsing of the output file in a function) so that we don't
-      # have to mock something as generic as 'json_format.Parse' to avoid an
-      # error on parsing an empty(due to mock call) file.
-      json_format_patch = self.PatchObject(json_format, 'Parse')
-      response = firmware_pb2.BuildAllFirmwareResponse()
-      # Call the method under test.
-      firmware.BuildAllFirmware(request, response, self.api_config)
-      # Because we mock out the function, we verify that it is called as we
-      # expect it to be called.
-      called_function = os.path.join(constants.SOURCE_ROOT,
-                                     fw_path, 'firmware_builder.py')
-      self.cros_build_run_patch.assert_called_with(
-          [called_function, '--metrics', mock.ANY, '--code-coverage', 'build'],
-          check=False)
-      # Verify that we try to parse the metrics file.
-      json_format_patch.assert_called()
+    def testBuildAllFirmware(self):
+        """Test invocation of endpoint by verifying call to cros_build_lib.run."""
+        for fw_loc in common_pb2.FwLocation.values():
+            fw_path = firmware.get_fw_loc(fw_loc)
+            if not fw_path:
+                continue
+            request = self._GetInput(
+                chroot_path=self.chroot_path,
+                fw_location=fw_loc,
+                code_coverage=True,
+            )
+            # TODO(mmortensen): Consider refactoring firmware._call_entry code
+            # (putting the parsing of the output file in a function) so that we don't
+            # have to mock something as generic as 'json_format.Parse' to avoid an
+            # error on parsing an empty(due to mock call) file.
+            json_format_patch = self.PatchObject(json_format, "Parse")
+            response = firmware_pb2.BuildAllFirmwareResponse()
+            # Call the method under test.
+            firmware.BuildAllFirmware(request, response, self.api_config)
+            # Because we mock out the function, we verify that it is called as we
+            # expect it to be called.
+            called_function = os.path.join(
+                constants.SOURCE_ROOT, fw_path, "firmware_builder.py"
+            )
+            self.cros_build_run_patch.assert_called_with(
+                [
+                    called_function,
+                    "--metrics",
+                    mock.ANY,
+                    "--code-coverage",
+                    "build",
+                ],
+                check=False,
+            )
+            # Verify that we try to parse the metrics file.
+            json_format_patch.assert_called()
 
-  def testValidateOnly(self):
-    """Sanity check that a validate only call does not execute any logic."""
-    for fw_loc in common_pb2.FwLocation.values():
-      if not firmware.get_fw_loc(fw_loc):
-        continue
-      request = self._GetInput(chroot_path=self.chroot_path,
-                               fw_location=fw_loc,
-                               code_coverage=True)
-      response = firmware_pb2.BuildAllFirmwareResponse()
-      firmware.BuildAllFirmware(request, response, self.validate_only_config)
-      self.cros_build_run_patch.assert_not_called()
+    def testValidateOnly(self):
+        """Sanity check that a validate only call does not execute any logic."""
+        for fw_loc in common_pb2.FwLocation.values():
+            if not firmware.get_fw_loc(fw_loc):
+                continue
+            request = self._GetInput(
+                chroot_path=self.chroot_path,
+                fw_location=fw_loc,
+                code_coverage=True,
+            )
+            response = firmware_pb2.BuildAllFirmwareResponse()
+            firmware.BuildAllFirmware(
+                request, response, self.validate_only_config
+            )
+            self.cros_build_run_patch.assert_not_called()
 
-  def testMockCall(self):
-    """Test that a mock call does not execute logic, returns mocked value."""
-    for fw_loc in common_pb2.FwLocation.values():
-      if not firmware.get_fw_loc(fw_loc):
-        continue
-      request = self._GetInput(chroot_path=self.chroot_path,
-                               fw_location=fw_loc,
-                               code_coverage=True)
-      response = firmware_pb2.BuildAllFirmwareResponse()
-      firmware.BuildAllFirmware(request, response, self.mock_call_config)
-      self.cros_build_run_patch.assert_not_called()
-      self.assertEqual(len(response.metrics.value), 1)
-      self.assertEqual(response.metrics.value[0].target_name, 'foo')
-      self.assertEqual(response.metrics.value[0].platform_name, 'bar')
-      self.assertEqual(len(response.metrics.value[0].fw_section), 1)
-      self.assertEqual(response.metrics.value[0].fw_section[0].region, 'EC_RO')
-      self.assertEqual(response.metrics.value[0].fw_section[0].used, 100)
-      self.assertEqual(response.metrics.value[0].fw_section[0].total, 150)
+    def testMockCall(self):
+        """Test that a mock call does not execute logic, returns mocked value."""
+        for fw_loc in common_pb2.FwLocation.values():
+            if not firmware.get_fw_loc(fw_loc):
+                continue
+            request = self._GetInput(
+                chroot_path=self.chroot_path,
+                fw_location=fw_loc,
+                code_coverage=True,
+            )
+            response = firmware_pb2.BuildAllFirmwareResponse()
+            firmware.BuildAllFirmware(request, response, self.mock_call_config)
+            self.cros_build_run_patch.assert_not_called()
+            self.assertEqual(len(response.metrics.value), 1)
+            self.assertEqual(response.metrics.value[0].target_name, "foo")
+            self.assertEqual(response.metrics.value[0].platform_name, "bar")
+            self.assertEqual(len(response.metrics.value[0].fw_section), 1)
+            self.assertEqual(
+                response.metrics.value[0].fw_section[0].region, "EC_RO"
+            )
+            self.assertEqual(response.metrics.value[0].fw_section[0].used, 100)
+            self.assertEqual(response.metrics.value[0].fw_section[0].total, 150)