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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/scripts/cros_generate_os_release_unittest.py b/scripts/cros_generate_os_release_unittest.py
index 8fb8cfe..c46c40c 100644
--- a/scripts/cros_generate_os_release_unittest.py
+++ b/scripts/cros_generate_os_release_unittest.py
@@ -13,56 +13,56 @@
 
 
 class CrosGenerateOsReleaseTest(cros_test_lib.TempDirTestCase):
-  """Tests GenerateOsRelease."""
+    """Tests GenerateOsRelease."""
 
-  def setUp(self):
-    # Use a fresh tempdir as the root for each test case.
-    self.osrelease = os.path.join(self.tempdir, 'etc', 'os-release')
-    self.osreleased = os.path.join(self.tempdir, 'etc', 'os-release.d')
-    osutils.SafeMakedirs(self.osreleased)
+    def setUp(self):
+        # Use a fresh tempdir as the root for each test case.
+        self.osrelease = os.path.join(self.tempdir, "etc", "os-release")
+        self.osreleased = os.path.join(self.tempdir, "etc", "os-release.d")
+        osutils.SafeMakedirs(self.osreleased)
 
-  def testOnlyOsRelease(self):
-    """Tests the script without /etc/os-release."""
-    osutils.WriteFile(os.path.join(self.osreleased, 'TEST'), 'hello')
-    cros_generate_os_release.GenerateOsRelease(self.tempdir)
-    self.assertEqual('TEST=hello\n', osutils.ReadFile(self.osrelease))
+    def testOnlyOsRelease(self):
+        """Tests the script without /etc/os-release."""
+        osutils.WriteFile(os.path.join(self.osreleased, "TEST"), "hello")
+        cros_generate_os_release.GenerateOsRelease(self.tempdir)
+        self.assertEqual("TEST=hello\n", osutils.ReadFile(self.osrelease))
 
-  def testOnlyOsReleaseD(self):
-    """Tests the script without /etc/os-release.d."""
-    osutils.RmDir(self.osreleased)
-    osutils.WriteFile(self.osrelease, 'TEST=bonjour\n')
+    def testOnlyOsReleaseD(self):
+        """Tests the script without /etc/os-release.d."""
+        osutils.RmDir(self.osreleased)
+        osutils.WriteFile(self.osrelease, "TEST=bonjour\n")
 
-    cros_generate_os_release.GenerateOsRelease(self.tempdir)
-    self.assertEqual('TEST=bonjour\n', osutils.ReadFile(self.osrelease))
+        cros_generate_os_release.GenerateOsRelease(self.tempdir)
+        self.assertEqual("TEST=bonjour\n", osutils.ReadFile(self.osrelease))
 
-  def testFailOnDuplicate(self):
-    """Tests with a field set both in os-release and os-release.d/."""
-    osutils.WriteFile(os.path.join(self.osreleased, 'TEST'), 'hello')
-    osutils.WriteFile(self.osrelease, 'TEST=bonjour')
+    def testFailOnDuplicate(self):
+        """Tests with a field set both in os-release and os-release.d/."""
+        osutils.WriteFile(os.path.join(self.osreleased, "TEST"), "hello")
+        osutils.WriteFile(self.osrelease, "TEST=bonjour")
 
-    self.assertRaises(cros_build_lib.DieSystemExit,
-                      cros_generate_os_release.GenerateOsRelease, self.tempdir)
+        self.assertRaises(
+            cros_build_lib.DieSystemExit,
+            cros_generate_os_release.GenerateOsRelease,
+            self.tempdir,
+        )
 
-  def testNormal(self):
-    """Normal scenario: both os-release and os-release.d are present."""
-    osutils.WriteFile(os.path.join(self.osreleased, 'TEST1'), 'hello')
-    osutils.WriteFile(self.osrelease, 'TEST2=bonjour')
+    def testNormal(self):
+        """Normal scenario: both os-release and os-release.d are present."""
+        osutils.WriteFile(os.path.join(self.osreleased, "TEST1"), "hello")
+        osutils.WriteFile(self.osrelease, "TEST2=bonjour")
 
-    default_params = {'TEST1': 'hello2',
-                      'TEST3': 'hola'}
+        default_params = {"TEST1": "hello2", "TEST3": "hola"}
 
-    cros_generate_os_release.GenerateOsRelease(self.tempdir,
-                                               default_params=default_params)
-    output = osutils.ReadFile(self.osrelease).splitlines()
-    output.sort()
-    self.assertEqual(['TEST1=hello',
-                      'TEST2=bonjour',
-                      'TEST3=hola'],
-                     output)
+        cros_generate_os_release.GenerateOsRelease(
+            self.tempdir, default_params=default_params
+        )
+        output = osutils.ReadFile(self.osrelease).splitlines()
+        output.sort()
+        self.assertEqual(["TEST1=hello", "TEST2=bonjour", "TEST3=hola"], output)
 
-  def testDefaultsOnly(self):
-    """Make sure we always emit defaults even without any os-release.d frags."""
-    osutils.RmDir(self.osreleased)
-    cros_generate_os_release.GenerateOsRelease(self.tempdir, {'FOO': 'bar'})
-    self.assertExists(self.osrelease)
-    self.assertEqual('FOO=bar\n', osutils.ReadFile(self.osrelease))
+    def testDefaultsOnly(self):
+        """Make sure we always emit defaults even without any os-release.d frags."""
+        osutils.RmDir(self.osreleased)
+        cros_generate_os_release.GenerateOsRelease(self.tempdir, {"FOO": "bar"})
+        self.assertExists(self.osrelease)
+        self.assertEqual("FOO=bar\n", osutils.ReadFile(self.osrelease))