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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/upload_prebuilts_unittest.py b/scripts/upload_prebuilts_unittest.py
index c221fb5..1dfccd0 100644
--- a/scripts/upload_prebuilts_unittest.py
+++ b/scripts/upload_prebuilts_unittest.py
@@ -22,555 +22,722 @@
 # pylint: disable=protected-access
 
 
-PUBLIC_PACKAGES = [{'CPV': 'gtk+/public1', 'SHA1': '1', 'MTIME': '1'},
-                   {'CPV': 'gtk+/public2', 'SHA1': '2',
-                    'PATH': 'gtk+/foo.tgz', 'MTIME': '2'}]
-PRIVATE_PACKAGES = [{'CPV': 'private', 'SHA1': '3', 'MTIME': '3'}]
+PUBLIC_PACKAGES = [
+    {"CPV": "gtk+/public1", "SHA1": "1", "MTIME": "1"},
+    {"CPV": "gtk+/public2", "SHA1": "2", "PATH": "gtk+/foo.tgz", "MTIME": "2"},
+]
+PRIVATE_PACKAGES = [{"CPV": "private", "SHA1": "3", "MTIME": "3"}]
 
 
 def SimplePackageIndex(header=True, packages=True):
-  pkgindex = binpkg.PackageIndex()
-  if header:
-    pkgindex.header['URI'] = 'gs://example'
-  if packages:
-    pkgindex.packages = copy.deepcopy(PUBLIC_PACKAGES + PRIVATE_PACKAGES)
-  return pkgindex
+    pkgindex = binpkg.PackageIndex()
+    if header:
+        pkgindex.header["URI"] = "gs://example"
+    if packages:
+        pkgindex.packages = copy.deepcopy(PUBLIC_PACKAGES + PRIVATE_PACKAGES)
+    return pkgindex
 
 
 class TestUpdateFile(cros_test_lib.TempDirTestCase):
-  """Tests for the UpdateLocalFile function."""
+    """Tests for the UpdateLocalFile function."""
 
-  def setUp(self):
-    self.contents_str = [
-        '# comment that should be skipped',
-        'PKGDIR="/var/lib/portage/pkgs"',
-        'PORTAGE_BINHOST="http://no.thanks.com"',
-        'portage portage-20100310.tar.bz2',
-        'COMPILE_FLAGS="some_value=some_other"',
-    ]
-    self.version_file = os.path.join(self.tempdir, 'version')
-    osutils.WriteFile(self.version_file, '\n'.join(self.contents_str))
+    def setUp(self):
+        self.contents_str = [
+            "# comment that should be skipped",
+            'PKGDIR="/var/lib/portage/pkgs"',
+            'PORTAGE_BINHOST="http://no.thanks.com"',
+            "portage portage-20100310.tar.bz2",
+            'COMPILE_FLAGS="some_value=some_other"',
+        ]
+        self.version_file = os.path.join(self.tempdir, "version")
+        osutils.WriteFile(self.version_file, "\n".join(self.contents_str))
 
-  def _read_version_file(self, version_file=None):
-    """Read the contents of self.version_file and return as a list."""
-    if not version_file:
-      version_file = self.version_file
+    def _read_version_file(self, version_file=None):
+        """Read the contents of self.version_file and return as a list."""
+        if not version_file:
+            version_file = self.version_file
 
-    with open(version_file) as version_fh:
-      return [line.strip() for line in version_fh.readlines()]
+        with open(version_file) as version_fh:
+            return [line.strip() for line in version_fh.readlines()]
 
+    def _verify_key_pair(self, key, val):
+        file_contents = self._read_version_file()
 
-  def _verify_key_pair(self, key, val):
-    file_contents = self._read_version_file()
+        # Make sure 'key' entry is only found once.
+        entry_found = False
 
-    # Make sure 'key' entry is only found once.
-    entry_found = False
+        # Ensure value is wrapped on quotes.
+        if '"' not in val:
+            val = '"%s"' % val
 
-    # Ensure value is wrapped on quotes.
-    if '"' not in val:
-      val = '"%s"' % val
+        # Inspect file contents.
+        for entry in file_contents:
+            if "=" not in entry:
+                continue
+            file_key, file_val = entry.split("=", maxsplit=1)
+            if file_key == key:
+                if val == file_val:
+                    if entry_found:
+                        self.fail(f"Variable {file_key} appears twice")
+                    else:
+                        entry_found = True
 
-    # Inspect file contents.
-    for entry in file_contents:
-      if '=' not in entry:
-        continue
-      file_key, file_val = entry.split('=', maxsplit=1)
-      if file_key == key:
-        if val == file_val:
-          if entry_found:
-            self.fail(f'Variable {file_key} appears twice')
-          else:
-            entry_found = True
+        if not entry_found:
+            self.fail('Could not find "%s=%s" in version file' % (key, val))
 
-    if not entry_found:
-      self.fail('Could not find "%s=%s" in version file' % (key, val))
+    def testAddVariableThatDoesNotExist(self):
+        """Add in a new variable that was no present in the file."""
+        key = "PORTAGE_BINHOST"
+        value = "1234567"
+        prebuilt.UpdateLocalFile(self.version_file, value)
+        print(self.version_file)
+        self._read_version_file()
+        self._verify_key_pair(key, value)
+        print(self.version_file)
 
-  def testAddVariableThatDoesNotExist(self):
-    """Add in a new variable that was no present in the file."""
-    key = 'PORTAGE_BINHOST'
-    value = '1234567'
-    prebuilt.UpdateLocalFile(self.version_file, value)
-    print(self.version_file)
-    self._read_version_file()
-    self._verify_key_pair(key, value)
-    print(self.version_file)
+    def testUpdateVariable(self):
+        """Test updating a variable that already exists."""
+        binhost_key, binhost_val = self.contents_str[2].split("=")
+        if binhost_key != "PORTAGE_BINHOST":
+            self.fail(
+                "unexpected test input: expected PORTAGE_BINHOST at line[2]"
+            )
+        self._verify_key_pair(binhost_key, binhost_val)
 
-  def testUpdateVariable(self):
-    """Test updating a variable that already exists."""
-    binhost_key, binhost_val = self.contents_str[2].split('=')
-    if binhost_key != 'PORTAGE_BINHOST':
-      self.fail('unexpected test input: expected PORTAGE_BINHOST at line[2]')
-    self._verify_key_pair(binhost_key, binhost_val)
+        # Confirm that unrelated variable 'PKGDIR' does not change.
+        pkgdir_key, pkgdir_val = self.contents_str[1].split("=")
+        if pkgdir_key != "PKGDIR":
+            self.fail("unexpected test input: expected PKGDIR at line[1]")
+        self._verify_key_pair(pkgdir_key, pkgdir_val)
 
-    # Confirm that unrelated variable 'PKGDIR' does not change.
-    pkgdir_key, pkgdir_val = self.contents_str[1].split('=')
-    if pkgdir_key != 'PKGDIR':
-      self.fail('unexpected test input: expected PKGDIR at line[1]')
-    self._verify_key_pair(pkgdir_key, pkgdir_val)
+        binhost_new_val = "test_update"
+        prebuilt.UpdateLocalFile(self.version_file, binhost_new_val)
+        self._verify_key_pair(binhost_key, binhost_new_val)
+        self._verify_key_pair(pkgdir_key, pkgdir_val)
 
-    binhost_new_val = 'test_update'
-    prebuilt.UpdateLocalFile(self.version_file, binhost_new_val)
-    self._verify_key_pair(binhost_key, binhost_new_val)
-    self._verify_key_pair(pkgdir_key, pkgdir_val)
+        binhost_new_val = "test_update2"
+        prebuilt.UpdateLocalFile(self.version_file, binhost_new_val)
+        self._verify_key_pair(binhost_key, binhost_new_val)
+        self._verify_key_pair(pkgdir_key, pkgdir_val)
 
-    binhost_new_val = 'test_update2'
-    prebuilt.UpdateLocalFile(self.version_file, binhost_new_val)
-    self._verify_key_pair(binhost_key, binhost_new_val)
-    self._verify_key_pair(pkgdir_key, pkgdir_val)
-
-  def testUpdateNonExistentFile(self):
-    key = 'PORTAGE_BINHOST'
-    value = '1234567'
-    non_existent_file = tempfile.mktemp()
-    try:
-      prebuilt.UpdateLocalFile(non_existent_file, value)
-      file_contents = self._read_version_file(non_existent_file)
-      self.assertEqual(file_contents, ['%s="%s"' % (key, value)])
-    finally:
-      if os.path.exists(non_existent_file):
-        os.remove(non_existent_file)
+    def testUpdateNonExistentFile(self):
+        key = "PORTAGE_BINHOST"
+        value = "1234567"
+        non_existent_file = tempfile.mktemp()
+        try:
+            prebuilt.UpdateLocalFile(non_existent_file, value)
+            file_contents = self._read_version_file(non_existent_file)
+            self.assertEqual(file_contents, ['%s="%s"' % (key, value)])
+        finally:
+            if os.path.exists(non_existent_file):
+                os.remove(non_existent_file)
 
 
 class TestPrebuilt(cros_test_lib.MockTestCase):
-  """Tests for Prebuilt logic."""
+    """Tests for Prebuilt logic."""
 
-  def setUp(self):
-    self._base_local_path = '/b/cbuild/build/chroot/build/x86-dogfood/'
-    self._gs_bucket_path = 'gs://chromeos-prebuilt/host/version'
-    self._local_path = os.path.join(self._base_local_path, 'public1.tbz2')
+    def setUp(self):
+        self._base_local_path = "/b/cbuild/build/chroot/build/x86-dogfood/"
+        self._gs_bucket_path = "gs://chromeos-prebuilt/host/version"
+        self._local_path = os.path.join(self._base_local_path, "public1.tbz2")
 
-  def testGenerateUploadDict(self):
-    self.PatchObject(prebuilt.os.path, 'exists', return_true=True)
-    pkgs = [{'CPV': 'public1'}]
-    result = prebuilt.GenerateUploadDict(self._base_local_path,
-                                         self._gs_bucket_path, pkgs)
-    expected = {self._local_path: self._gs_bucket_path + '/public1.tbz2', }
-    self.assertEqual(result, expected)
+    def testGenerateUploadDict(self):
+        self.PatchObject(prebuilt.os.path, "exists", return_true=True)
+        pkgs = [{"CPV": "public1"}]
+        result = prebuilt.GenerateUploadDict(
+            self._base_local_path, self._gs_bucket_path, pkgs
+        )
+        expected = {
+            self._local_path: self._gs_bucket_path + "/public1.tbz2",
+        }
+        self.assertEqual(result, expected)
 
-  def testGenerateUploadDictWithDebug(self):
-    self.PatchObject(prebuilt.os.path, 'exists', return_true=True)
-    pkgs = [{'CPV': 'public1', 'DEBUG_SYMBOLS': 'yes'}]
-    result = prebuilt.GenerateUploadDict(self._base_local_path,
-                                         self._gs_bucket_path, pkgs)
-    expected = {self._local_path: self._gs_bucket_path + '/public1.tbz2',
-                self._local_path.replace('.tbz2', '.debug.tbz2'):
-                self._gs_bucket_path + '/public1.debug.tbz2'}
-    self.assertEqual(result, expected)
+    def testGenerateUploadDictWithDebug(self):
+        self.PatchObject(prebuilt.os.path, "exists", return_true=True)
+        pkgs = [{"CPV": "public1", "DEBUG_SYMBOLS": "yes"}]
+        result = prebuilt.GenerateUploadDict(
+            self._base_local_path, self._gs_bucket_path, pkgs
+        )
+        expected = {
+            self._local_path: self._gs_bucket_path + "/public1.tbz2",
+            self._local_path.replace(
+                ".tbz2", ".debug.tbz2"
+            ): self._gs_bucket_path
+            + "/public1.debug.tbz2",
+        }
+        self.assertEqual(result, expected)
 
-  def testDeterminePrebuiltConfHost(self):
-    """Test that the host prebuilt path comes back properly."""
-    expected_path = os.path.join(prebuilt._PREBUILT_MAKE_CONF['amd64'])
-    self.assertEqual(prebuilt.DeterminePrebuiltConfFile('fake_path', 'amd64'),
-                     expected_path)
+    def testDeterminePrebuiltConfHost(self):
+        """Test that the host prebuilt path comes back properly."""
+        expected_path = os.path.join(prebuilt._PREBUILT_MAKE_CONF["amd64"])
+        self.assertEqual(
+            prebuilt.DeterminePrebuiltConfFile("fake_path", "amd64"),
+            expected_path,
+        )
 
 
 class TestPkgIndex(cros_test_lib.TestCase):
-  """Helper for tests that update the Packages index file."""
+    """Helper for tests that update the Packages index file."""
 
-  def setUp(self):
-    self.db = {}
-    self.pkgindex = SimplePackageIndex()
-    self.empty = SimplePackageIndex(packages=False)
+    def setUp(self):
+        self.db = {}
+        self.pkgindex = SimplePackageIndex()
+        self.empty = SimplePackageIndex(packages=False)
 
-  def assertURIs(self, uris):
-    """Verify that the duplicate DB has the specified URLs."""
-    expected = [v.uri for _, v in sorted(self.db.items())]
-    self.assertEqual(expected, uris)
+    def assertURIs(self, uris):
+        """Verify that the duplicate DB has the specified URLs."""
+        expected = [v.uri for _, v in sorted(self.db.items())]
+        self.assertEqual(expected, uris)
 
 
 class TestPackagesFileFiltering(TestPkgIndex):
-  """Tests for Packages filtering behavior."""
+    """Tests for Packages filtering behavior."""
 
-  def testFilterPkgIndex(self):
-    """Test filtering out of private packages."""
-    self.pkgindex.RemoveFilteredPackages(lambda pkg: pkg in PRIVATE_PACKAGES)
-    self.assertEqual(self.pkgindex.packages, PUBLIC_PACKAGES)
-    self.assertEqual(self.pkgindex.modified, True)
+    def testFilterPkgIndex(self):
+        """Test filtering out of private packages."""
+        self.pkgindex.RemoveFilteredPackages(
+            lambda pkg: pkg in PRIVATE_PACKAGES
+        )
+        self.assertEqual(self.pkgindex.packages, PUBLIC_PACKAGES)
+        self.assertEqual(self.pkgindex.modified, True)
 
 
 class TestPopulateDuplicateDB(TestPkgIndex):
-  """Tests for the _PopulateDuplicateDB function."""
+    """Tests for the _PopulateDuplicateDB function."""
 
-  def testEmptyIndex(self):
-    """Test population of the duplicate DB with an empty index."""
-    self.empty._PopulateDuplicateDB(self.db, 0)
-    self.assertEqual(self.db, {})
+    def testEmptyIndex(self):
+        """Test population of the duplicate DB with an empty index."""
+        self.empty._PopulateDuplicateDB(self.db, 0)
+        self.assertEqual(self.db, {})
 
-  def testNormalIndex(self):
-    """Test population of the duplicate DB with a full index."""
-    self.pkgindex._PopulateDuplicateDB(self.db, 0)
-    self.assertURIs(['gs://example/gtk+/public1.tbz2',
-                     'gs://example/gtk+/foo.tgz',
-                     'gs://example/private.tbz2'])
+    def testNormalIndex(self):
+        """Test population of the duplicate DB with a full index."""
+        self.pkgindex._PopulateDuplicateDB(self.db, 0)
+        self.assertURIs(
+            [
+                "gs://example/gtk+/public1.tbz2",
+                "gs://example/gtk+/foo.tgz",
+                "gs://example/private.tbz2",
+            ]
+        )
 
-  def testMissingSHA1(self):
-    """Test population of the duplicate DB with a missing SHA1."""
-    del self.pkgindex.packages[0]['SHA1']
-    self.pkgindex._PopulateDuplicateDB(self.db, 0)
-    self.assertURIs(['gs://example/gtk+/foo.tgz',
-                     'gs://example/private.tbz2'])
+    def testMissingSHA1(self):
+        """Test population of the duplicate DB with a missing SHA1."""
+        del self.pkgindex.packages[0]["SHA1"]
+        self.pkgindex._PopulateDuplicateDB(self.db, 0)
+        self.assertURIs(
+            ["gs://example/gtk+/foo.tgz", "gs://example/private.tbz2"]
+        )
 
-  def testFailedPopulate(self):
-    """Test failure conditions for the populate method."""
-    headerless = SimplePackageIndex(header=False)
-    self.assertRaises(KeyError, headerless._PopulateDuplicateDB, self.db, 0)
-    del self.pkgindex.packages[0]['CPV']
-    self.assertRaises(KeyError, self.pkgindex._PopulateDuplicateDB, self.db, 0)
+    def testFailedPopulate(self):
+        """Test failure conditions for the populate method."""
+        headerless = SimplePackageIndex(header=False)
+        self.assertRaises(KeyError, headerless._PopulateDuplicateDB, self.db, 0)
+        del self.pkgindex.packages[0]["CPV"]
+        self.assertRaises(
+            KeyError, self.pkgindex._PopulateDuplicateDB, self.db, 0
+        )
 
 
 class TestResolveDuplicateUploads(cros_test_lib.MockTestCase, TestPkgIndex):
-  """Tests for the ResolveDuplicateUploads function."""
+    """Tests for the ResolveDuplicateUploads function."""
 
-  def setUp(self):
-    self.PatchObject(binpkg.time, 'time', return_value=binpkg.TWO_WEEKS)
-    self.db = {}
-    self.dup = SimplePackageIndex()
-    self.expected_pkgindex = SimplePackageIndex()
+    def setUp(self):
+        self.PatchObject(binpkg.time, "time", return_value=binpkg.TWO_WEEKS)
+        self.db = {}
+        self.dup = SimplePackageIndex()
+        self.expected_pkgindex = SimplePackageIndex()
 
-  def assertNoDuplicates(self, candidates):
-    """Verify no duplicates are found with the specified candidates."""
-    uploads = self.pkgindex.ResolveDuplicateUploads(candidates)
-    self.assertEqual(uploads, self.pkgindex.packages)
-    self.assertEqual(len(self.pkgindex.packages),
-                     len(self.expected_pkgindex.packages))
-    for pkg1, pkg2 in zip(self.pkgindex.packages,
-                          self.expected_pkgindex.packages):
-      self.assertNotEqual(pkg1['MTIME'], pkg2['MTIME'])
-      del pkg1['MTIME']
-      del pkg2['MTIME']
-    self.assertEqual(self.pkgindex.modified, False)
-    self.assertEqual(self.pkgindex.packages, self.expected_pkgindex.packages)
+    def assertNoDuplicates(self, candidates):
+        """Verify no duplicates are found with the specified candidates."""
+        uploads = self.pkgindex.ResolveDuplicateUploads(candidates)
+        self.assertEqual(uploads, self.pkgindex.packages)
+        self.assertEqual(
+            len(self.pkgindex.packages), len(self.expected_pkgindex.packages)
+        )
+        for pkg1, pkg2 in zip(
+            self.pkgindex.packages, self.expected_pkgindex.packages
+        ):
+            self.assertNotEqual(pkg1["MTIME"], pkg2["MTIME"])
+            del pkg1["MTIME"]
+            del pkg2["MTIME"]
+        self.assertEqual(self.pkgindex.modified, False)
+        self.assertEqual(
+            self.pkgindex.packages, self.expected_pkgindex.packages
+        )
 
-  def assertAllDuplicates(self, candidates):
-    """Verify every package is a duplicate in the specified list."""
-    for pkg in self.expected_pkgindex.packages:
-      pkg.setdefault('PATH', pkg['CPV'] + '.tbz2')
-    self.pkgindex.ResolveDuplicateUploads(candidates)
-    self.assertEqual(self.pkgindex.packages, self.expected_pkgindex.packages)
+    def assertAllDuplicates(self, candidates):
+        """Verify every package is a duplicate in the specified list."""
+        for pkg in self.expected_pkgindex.packages:
+            pkg.setdefault("PATH", pkg["CPV"] + ".tbz2")
+        self.pkgindex.ResolveDuplicateUploads(candidates)
+        self.assertEqual(
+            self.pkgindex.packages, self.expected_pkgindex.packages
+        )
 
-  def testEmptyList(self):
-    """If no candidates are supplied, no duplicates should be found."""
-    self.assertNoDuplicates([])
+    def testEmptyList(self):
+        """If no candidates are supplied, no duplicates should be found."""
+        self.assertNoDuplicates([])
 
-  def testEmptyIndex(self):
-    """If no packages are supplied, no duplicates should be found."""
-    self.assertNoDuplicates([self.empty])
+    def testEmptyIndex(self):
+        """If no packages are supplied, no duplicates should be found."""
+        self.assertNoDuplicates([self.empty])
 
-  def testDifferentURI(self):
-    """If the URI differs, no duplicates should be found."""
-    self.dup.header['URI'] = 'gs://example2'
-    self.assertNoDuplicates([self.dup])
+    def testDifferentURI(self):
+        """If the URI differs, no duplicates should be found."""
+        self.dup.header["URI"] = "gs://example2"
+        self.assertNoDuplicates([self.dup])
 
-  def testUpdateModificationTime(self):
-    """When duplicates are found, we should use the latest mtime."""
-    for pkg in self.expected_pkgindex.packages:
-      pkg['MTIME'] = '10'
-    for pkg in self.dup.packages:
-      pkg['MTIME'] = '4'
-    self.assertAllDuplicates([self.expected_pkgindex, self.dup])
+    def testUpdateModificationTime(self):
+        """When duplicates are found, we should use the latest mtime."""
+        for pkg in self.expected_pkgindex.packages:
+            pkg["MTIME"] = "10"
+        for pkg in self.dup.packages:
+            pkg["MTIME"] = "4"
+        self.assertAllDuplicates([self.expected_pkgindex, self.dup])
 
-  def testCanonicalUrl(self):
-    """If the URL is in a different format, we should still find duplicates."""
-    self.dup.header['URI'] = gs.PUBLIC_BASE_HTTPS_URL + 'example'
-    self.assertAllDuplicates([self.dup])
+    def testCanonicalUrl(self):
+        """If the URL is in a different format, we should still find duplicates."""
+        self.dup.header["URI"] = gs.PUBLIC_BASE_HTTPS_URL + "example"
+        self.assertAllDuplicates([self.dup])
 
-  def testMissingSHA1(self):
-    """We should not find duplicates if there is no SHA1."""
-    del self.pkgindex.packages[0]['SHA1']
-    del self.expected_pkgindex.packages[0]['SHA1']
-    for pkg in self.expected_pkgindex.packages[1:]:
-      pkg.setdefault('PATH', pkg['CPV'] + '.tbz2')
-    self.pkgindex.ResolveDuplicateUploads([self.dup])
-    self.assertNotEqual(self.pkgindex.packages[0]['MTIME'],
-                        self.expected_pkgindex.packages[0]['MTIME'])
-    del self.pkgindex.packages[0]['MTIME']
-    del self.expected_pkgindex.packages[0]['MTIME']
-    self.assertEqual(self.pkgindex.packages, self.expected_pkgindex.packages)
+    def testMissingSHA1(self):
+        """We should not find duplicates if there is no SHA1."""
+        del self.pkgindex.packages[0]["SHA1"]
+        del self.expected_pkgindex.packages[0]["SHA1"]
+        for pkg in self.expected_pkgindex.packages[1:]:
+            pkg.setdefault("PATH", pkg["CPV"] + ".tbz2")
+        self.pkgindex.ResolveDuplicateUploads([self.dup])
+        self.assertNotEqual(
+            self.pkgindex.packages[0]["MTIME"],
+            self.expected_pkgindex.packages[0]["MTIME"],
+        )
+        del self.pkgindex.packages[0]["MTIME"]
+        del self.expected_pkgindex.packages[0]["MTIME"]
+        self.assertEqual(
+            self.pkgindex.packages, self.expected_pkgindex.packages
+        )
 
-  def testSymbolsAvailable(self):
-    """If symbols are available remotely, re-use them and set DEBUG_SYMBOLS."""
-    self.dup.packages[0]['DEBUG_SYMBOLS'] = 'yes'
+    def testSymbolsAvailable(self):
+        """If symbols are available remotely, re-use them and set DEBUG_SYMBOLS."""
+        self.dup.packages[0]["DEBUG_SYMBOLS"] = "yes"
 
-    uploads = self.pkgindex.ResolveDuplicateUploads([self.dup])
-    self.assertEqual(uploads, [])
-    self.assertEqual(self.pkgindex.packages[0].get('DEBUG_SYMBOLS'), 'yes')
+        uploads = self.pkgindex.ResolveDuplicateUploads([self.dup])
+        self.assertEqual(uploads, [])
+        self.assertEqual(self.pkgindex.packages[0].get("DEBUG_SYMBOLS"), "yes")
 
-  def testSymbolsAvailableLocallyOnly(self):
-    """If the symbols are only available locally, reupload them."""
-    self.pkgindex.packages[0]['DEBUG_SYMBOLS'] = 'yes'
+    def testSymbolsAvailableLocallyOnly(self):
+        """If the symbols are only available locally, reupload them."""
+        self.pkgindex.packages[0]["DEBUG_SYMBOLS"] = "yes"
 
-    uploads = self.pkgindex.ResolveDuplicateUploads([self.dup])
-    self.assertEqual(uploads, [self.pkgindex.packages[0]])
+        uploads = self.pkgindex.ResolveDuplicateUploads([self.dup])
+        self.assertEqual(uploads, [self.pkgindex.packages[0]])
 
 
 class TestWritePackageIndex(cros_test_lib.MockTestCase, TestPkgIndex):
-  """Tests for the WriteToNamedTemporaryFile function."""
+    """Tests for the WriteToNamedTemporaryFile function."""
 
-  def testSimple(self):
-    """Test simple call of WriteToNamedTemporaryFile()"""
-    self.PatchObject(self.pkgindex, 'Write')
-    f = self.pkgindex.WriteToNamedTemporaryFile()
-    self.assertEqual(f.read(), '')
+    def testSimple(self):
+        """Test simple call of WriteToNamedTemporaryFile()"""
+        self.PatchObject(self.pkgindex, "Write")
+        f = self.pkgindex.WriteToNamedTemporaryFile()
+        self.assertEqual(f.read(), "")
 
 
 class TestUploadPrebuilt(cros_test_lib.MockTempDirTestCase):
-  """Tests for the _UploadPrebuilt function."""
+    """Tests for the _UploadPrebuilt function."""
 
-  def setUp(self):
-    class MockTemporaryFile(object):
-      """Mock out the temporary file logic."""
-      def __init__(self, name):
-        self.name = name
-    self.pkgindex = SimplePackageIndex()
-    self.PatchObject(binpkg, 'GrabLocalPackageIndex',
-                     return_value=self.pkgindex)
-    self.PatchObject(self.pkgindex, 'ResolveDuplicateUploads',
-                     return_value=PRIVATE_PACKAGES)
-    self.PatchObject(self.pkgindex, 'WriteToNamedTemporaryFile',
-                     return_value=MockTemporaryFile('fake'))
-    self.remote_up_mock = self.PatchObject(prebuilt, 'RemoteUpload')
-    self.gs_up_mock = self.PatchObject(prebuilt, '_GsUpload')
+    def setUp(self):
+        class MockTemporaryFile(object):
+            """Mock out the temporary file logic."""
 
-  def testSuccessfulGsUpload(self):
-    uploads = {
-        os.path.join(self.tempdir, 'private.tbz2'): 'gs://foo/private.tbz2'}
-    dev_extras = os.path.join(self.tempdir, 'dev-only-extras.tar.xz')
-    osutils.Touch(dev_extras)
-    self.PatchObject(prebuilt, 'GenerateUploadDict',
-                     return_value=uploads)
-    uploads = uploads.copy()
-    uploads['fake'] = 'gs://foo/suffix/Packages'
-    uploads[dev_extras] = 'gs://foo/suffix/dev-only-extras.tar.xz'
-    acl = 'public-read'
-    uri = self.pkgindex.header['URI']
-    uploader = prebuilt.PrebuiltUploader('gs://foo', acl, uri, [], '/', [],
-                                         False, 'foo', False, 'x86-foo', [], '')
-    uploader._UploadPrebuilt(self.tempdir, 'suffix')
-    self.remote_up_mock.assert_called_once_with(mock.ANY, acl, uploads)
-    self.assertTrue(self.gs_up_mock.called)
+            def __init__(self, name):
+                self.name = name
+
+        self.pkgindex = SimplePackageIndex()
+        self.PatchObject(
+            binpkg, "GrabLocalPackageIndex", return_value=self.pkgindex
+        )
+        self.PatchObject(
+            self.pkgindex,
+            "ResolveDuplicateUploads",
+            return_value=PRIVATE_PACKAGES,
+        )
+        self.PatchObject(
+            self.pkgindex,
+            "WriteToNamedTemporaryFile",
+            return_value=MockTemporaryFile("fake"),
+        )
+        self.remote_up_mock = self.PatchObject(prebuilt, "RemoteUpload")
+        self.gs_up_mock = self.PatchObject(prebuilt, "_GsUpload")
+
+    def testSuccessfulGsUpload(self):
+        uploads = {
+            os.path.join(self.tempdir, "private.tbz2"): "gs://foo/private.tbz2"
+        }
+        dev_extras = os.path.join(self.tempdir, "dev-only-extras.tar.xz")
+        osutils.Touch(dev_extras)
+        self.PatchObject(prebuilt, "GenerateUploadDict", return_value=uploads)
+        uploads = uploads.copy()
+        uploads["fake"] = "gs://foo/suffix/Packages"
+        uploads[dev_extras] = "gs://foo/suffix/dev-only-extras.tar.xz"
+        acl = "public-read"
+        uri = self.pkgindex.header["URI"]
+        uploader = prebuilt.PrebuiltUploader(
+            "gs://foo",
+            acl,
+            uri,
+            [],
+            "/",
+            [],
+            False,
+            "foo",
+            False,
+            "x86-foo",
+            [],
+            "",
+        )
+        uploader._UploadPrebuilt(self.tempdir, "suffix")
+        self.remote_up_mock.assert_called_once_with(mock.ANY, acl, uploads)
+        self.assertTrue(self.gs_up_mock.called)
 
 
 class TestSyncPrebuilts(cros_test_lib.MockTestCase):
-  """Tests for the SyncHostPrebuilts function."""
+    """Tests for the SyncHostPrebuilts function."""
 
-  def setUp(self):
-    self.rev_mock = self.PatchObject(prebuilt, 'RevGitFile', return_value=None)
-    self.update_binhost_mock = self.PatchObject(
-        prebuilt, 'UpdateBinhostConfFile', return_value=None)
-    self.build_path = '/trunk'
-    self.upload_location = 'gs://upload/'
-    self.version = '1'
-    self.binhost = 'http://prebuilt/'
-    self.key = 'PORTAGE_BINHOST'
-    self.upload_mock = self.PatchObject(prebuilt.PrebuiltUploader,
-                                        '_UploadPrebuilt', return_value=True)
+    def setUp(self):
+        self.rev_mock = self.PatchObject(
+            prebuilt, "RevGitFile", return_value=None
+        )
+        self.update_binhost_mock = self.PatchObject(
+            prebuilt, "UpdateBinhostConfFile", return_value=None
+        )
+        self.build_path = "/trunk"
+        self.upload_location = "gs://upload/"
+        self.version = "1"
+        self.binhost = "http://prebuilt/"
+        self.key = "PORTAGE_BINHOST"
+        self.upload_mock = self.PatchObject(
+            prebuilt.PrebuiltUploader, "_UploadPrebuilt", return_value=True
+        )
 
-  def _testSyncHostPrebuilts(self, chroot):
-    board = 'x86-foo'
-    target = prebuilt.BuildTarget(board, 'aura')
-    slave_targets = [prebuilt.BuildTarget('x86-bar', 'aura')]
-    if chroot is None:
-      package_path = os.path.join(self.build_path,
-                                  'chroot',
-                                  prebuilt._HOST_PACKAGES_PATH)
-    else:
-      package_path = os.path.join(chroot, prebuilt._HOST_PACKAGES_PATH)
-    url_suffix = prebuilt._REL_HOST_PATH % {
-        'version': self.version,
-        'host_arch': prebuilt._HOST_ARCH,
-        'target': target,
-    }
-    packages_url_suffix = '%s/packages' % url_suffix.rstrip('/')
-    url_value = '%s/%s/' % (self.binhost.rstrip('/'),
-                            packages_url_suffix.rstrip('/'))
-    urls = [url_value.replace('foo', 'bar'), url_value]
-    binhost = ' '.join(urls)
-    uploader = prebuilt.PrebuiltUploader(
-        self.upload_location, 'public-read', self.binhost, [],
-        self.build_path, [], False, 'foo', False, target, slave_targets,
-        self.version, chroot=chroot)
-    uploader.SyncHostPrebuilts(self.key, True, True)
-    self.upload_mock.assert_called_once_with(package_path, packages_url_suffix)
-    self.rev_mock.assert_called_once_with(
-        mock.ANY, {self.key: binhost}, dryrun=False)
-    self.update_binhost_mock.assert_called_once_with(
-        mock.ANY, self.key, binhost)
+    def _testSyncHostPrebuilts(self, chroot):
+        board = "x86-foo"
+        target = prebuilt.BuildTarget(board, "aura")
+        slave_targets = [prebuilt.BuildTarget("x86-bar", "aura")]
+        if chroot is None:
+            package_path = os.path.join(
+                self.build_path, "chroot", prebuilt._HOST_PACKAGES_PATH
+            )
+        else:
+            package_path = os.path.join(chroot, prebuilt._HOST_PACKAGES_PATH)
+        url_suffix = prebuilt._REL_HOST_PATH % {
+            "version": self.version,
+            "host_arch": prebuilt._HOST_ARCH,
+            "target": target,
+        }
+        packages_url_suffix = "%s/packages" % url_suffix.rstrip("/")
+        url_value = "%s/%s/" % (
+            self.binhost.rstrip("/"),
+            packages_url_suffix.rstrip("/"),
+        )
+        urls = [url_value.replace("foo", "bar"), url_value]
+        binhost = " ".join(urls)
+        uploader = prebuilt.PrebuiltUploader(
+            self.upload_location,
+            "public-read",
+            self.binhost,
+            [],
+            self.build_path,
+            [],
+            False,
+            "foo",
+            False,
+            target,
+            slave_targets,
+            self.version,
+            chroot=chroot,
+        )
+        uploader.SyncHostPrebuilts(self.key, True, True)
+        self.upload_mock.assert_called_once_with(
+            package_path, packages_url_suffix
+        )
+        self.rev_mock.assert_called_once_with(
+            mock.ANY, {self.key: binhost}, dryrun=False
+        )
+        self.update_binhost_mock.assert_called_once_with(
+            mock.ANY, self.key, binhost
+        )
 
-  def testSyncHostPrebuilts(self):
-    self._testSyncHostPrebuilts(chroot=None)
+    def testSyncHostPrebuilts(self):
+        self._testSyncHostPrebuilts(chroot=None)
 
-  def testSyncHostPrebuiltsWithChroot(self):
-    self._testSyncHostPrebuilts('/test/chroot')
+    def testSyncHostPrebuiltsWithChroot(self):
+        self._testSyncHostPrebuilts("/test/chroot")
 
-  def testSyncBoardPrebuilts(self):
-    board = 'x86-foo'
-    target = prebuilt.BuildTarget(board, 'aura')
-    slave_targets = [prebuilt.BuildTarget('x86-bar', 'aura')]
-    board_path = os.path.join(
-        self.build_path, prebuilt._BOARD_PATH % {'board': board})
-    package_path = os.path.join(board_path, 'packages')
-    url_suffix = prebuilt._REL_BOARD_PATH % {
-        'version': self.version,
-        'target': target,
-    }
-    packages_url_suffix = '%s/packages' % url_suffix.rstrip('/')
-    url_value = '%s/%s/' % (self.binhost.rstrip('/'),
-                            packages_url_suffix.rstrip('/'))
-    bar_binhost = url_value.replace('foo', 'bar')
-    determine_mock = self.PatchObject(prebuilt, 'DeterminePrebuiltConfFile',
-                                      side_effect=('bar', 'foo'))
-    self.PatchObject(prebuilt.PrebuiltUploader, '_UploadSdkTarball')
-    with parallel_unittest.ParallelMock():
-      multiprocessing.Process.exitcode = 0
-      uploader = prebuilt.PrebuiltUploader(
-          self.upload_location, 'public-read', self.binhost, [],
-          self.build_path, [], False, 'foo', False, target, slave_targets,
-          self.version)
-      uploader.SyncBoardPrebuilts(self.key, True, True, True, None, None, None,
-                                  None, None)
-    determine_mock.assert_has_calls([
-        mock.call(self.build_path, slave_targets[0]),
-        mock.call(self.build_path, target),
-    ])
-    self.upload_mock.assert_called_once_with(package_path, packages_url_suffix)
-    self.rev_mock.assert_has_calls([
-        mock.call('bar', {self.key: bar_binhost}, dryrun=False),
-        mock.call('foo', {self.key: url_value}, dryrun=False),
-    ])
-    self.update_binhost_mock.assert_has_calls([
-        mock.call(mock.ANY, self.key, bar_binhost),
-        mock.call(mock.ANY, self.key, url_value),
-    ])
+    def testSyncBoardPrebuilts(self):
+        board = "x86-foo"
+        target = prebuilt.BuildTarget(board, "aura")
+        slave_targets = [prebuilt.BuildTarget("x86-bar", "aura")]
+        board_path = os.path.join(
+            self.build_path, prebuilt._BOARD_PATH % {"board": board}
+        )
+        package_path = os.path.join(board_path, "packages")
+        url_suffix = prebuilt._REL_BOARD_PATH % {
+            "version": self.version,
+            "target": target,
+        }
+        packages_url_suffix = "%s/packages" % url_suffix.rstrip("/")
+        url_value = "%s/%s/" % (
+            self.binhost.rstrip("/"),
+            packages_url_suffix.rstrip("/"),
+        )
+        bar_binhost = url_value.replace("foo", "bar")
+        determine_mock = self.PatchObject(
+            prebuilt, "DeterminePrebuiltConfFile", side_effect=("bar", "foo")
+        )
+        self.PatchObject(prebuilt.PrebuiltUploader, "_UploadSdkTarball")
+        with parallel_unittest.ParallelMock():
+            multiprocessing.Process.exitcode = 0
+            uploader = prebuilt.PrebuiltUploader(
+                self.upload_location,
+                "public-read",
+                self.binhost,
+                [],
+                self.build_path,
+                [],
+                False,
+                "foo",
+                False,
+                target,
+                slave_targets,
+                self.version,
+            )
+            uploader.SyncBoardPrebuilts(
+                self.key, True, True, True, None, None, None, None, None
+            )
+        determine_mock.assert_has_calls(
+            [
+                mock.call(self.build_path, slave_targets[0]),
+                mock.call(self.build_path, target),
+            ]
+        )
+        self.upload_mock.assert_called_once_with(
+            package_path, packages_url_suffix
+        )
+        self.rev_mock.assert_has_calls(
+            [
+                mock.call("bar", {self.key: bar_binhost}, dryrun=False),
+                mock.call("foo", {self.key: url_value}, dryrun=False),
+            ]
+        )
+        self.update_binhost_mock.assert_has_calls(
+            [
+                mock.call(mock.ANY, self.key, bar_binhost),
+                mock.call(mock.ANY, self.key, url_value),
+            ]
+        )
 
 
 class TestMain(cros_test_lib.MockTestCase):
-  """Tests for the main() function."""
+    """Tests for the main() function."""
 
-  def testMain(self):
-    """Test that the main function works."""
-    options = mock.MagicMock()
-    old_binhost = 'http://prebuilt/1'
-    options.previous_binhost_url = [old_binhost]
-    options.board = 'x86-foo'
-    options.profile = None
-    target = prebuilt.BuildTarget(options.board, options.profile)
-    options.build_path = '/trunk'
-    options.chroot = None
-    options.dryrun = False
-    options.private = True
-    options.packages = []
-    options.sync_host = True
-    options.git_sync = True
-    options.upload_board_tarball = True
-    options.prepackaged_tarball = None
-    options.toolchains_overlay_tarballs = []
-    options.toolchains_overlay_upload_path = ''
-    options.toolchain_tarballs = []
-    options.toolchain_upload_path = ''
-    options.upload = 'gs://upload/'
-    options.binhost_base_url = options.upload
-    options.prepend_version = True
-    options.set_version = None
-    options.skip_upload = False
-    options.filters = True
-    options.key = 'PORTAGE_BINHOST'
-    options.binhost_conf_dir = None
-    options.sync_binhost_conf = True
-    options.slave_targets = [prebuilt.BuildTarget('x86-bar', 'aura')]
-    self.PatchObject(prebuilt, 'ParseOptions',
-                     return_value=tuple([options, target]))
-    self.PatchObject(binpkg, 'GrabRemotePackageIndex', return_value=True)
-    init_mock = self.PatchObject(prebuilt.PrebuiltUploader, '__init__',
-                                 return_value=None)
-    expected_gs_acl_path = os.path.join('/fake_path',
-                                        prebuilt._GOOGLESTORAGE_GSUTIL_FILE)
-    self.PatchObject(portage_util, 'FindOverlayFile',
-                     return_value=expected_gs_acl_path)
-    host_mock = self.PatchObject(
-        prebuilt.PrebuiltUploader, 'SyncHostPrebuilts', return_value=None)
-    board_mock = self.PatchObject(
-        prebuilt.PrebuiltUploader, 'SyncBoardPrebuilts', return_value=None)
+    def testMain(self):
+        """Test that the main function works."""
+        options = mock.MagicMock()
+        old_binhost = "http://prebuilt/1"
+        options.previous_binhost_url = [old_binhost]
+        options.board = "x86-foo"
+        options.profile = None
+        target = prebuilt.BuildTarget(options.board, options.profile)
+        options.build_path = "/trunk"
+        options.chroot = None
+        options.dryrun = False
+        options.private = True
+        options.packages = []
+        options.sync_host = True
+        options.git_sync = True
+        options.upload_board_tarball = True
+        options.prepackaged_tarball = None
+        options.toolchains_overlay_tarballs = []
+        options.toolchains_overlay_upload_path = ""
+        options.toolchain_tarballs = []
+        options.toolchain_upload_path = ""
+        options.upload = "gs://upload/"
+        options.binhost_base_url = options.upload
+        options.prepend_version = True
+        options.set_version = None
+        options.skip_upload = False
+        options.filters = True
+        options.key = "PORTAGE_BINHOST"
+        options.binhost_conf_dir = None
+        options.sync_binhost_conf = True
+        options.slave_targets = [prebuilt.BuildTarget("x86-bar", "aura")]
+        self.PatchObject(
+            prebuilt, "ParseOptions", return_value=tuple([options, target])
+        )
+        self.PatchObject(binpkg, "GrabRemotePackageIndex", return_value=True)
+        init_mock = self.PatchObject(
+            prebuilt.PrebuiltUploader, "__init__", return_value=None
+        )
+        expected_gs_acl_path = os.path.join(
+            "/fake_path", prebuilt._GOOGLESTORAGE_GSUTIL_FILE
+        )
+        self.PatchObject(
+            portage_util, "FindOverlayFile", return_value=expected_gs_acl_path
+        )
+        host_mock = self.PatchObject(
+            prebuilt.PrebuiltUploader, "SyncHostPrebuilts", return_value=None
+        )
+        board_mock = self.PatchObject(
+            prebuilt.PrebuiltUploader, "SyncBoardPrebuilts", return_value=None
+        )
 
-    prebuilt.main([])
+        prebuilt.main([])
 
-    init_mock.assert_called_once_with(options.upload, expected_gs_acl_path,
-                                      options.upload, mock.ANY,
-                                      options.build_path, options.packages,
-                                      False, None, False,
-                                      target, options.slave_targets,
-                                      mock.ANY, None)
-    board_mock.assert_called_once_with(
-        options.key, options.git_sync,
-        options.sync_binhost_conf, options.upload_board_tarball, None,
-        [], '', [], '')
-    host_mock.assert_called_once_with(
-        options.key, options.git_sync, options.sync_binhost_conf)
+        init_mock.assert_called_once_with(
+            options.upload,
+            expected_gs_acl_path,
+            options.upload,
+            mock.ANY,
+            options.build_path,
+            options.packages,
+            False,
+            None,
+            False,
+            target,
+            options.slave_targets,
+            mock.ANY,
+            None,
+        )
+        board_mock.assert_called_once_with(
+            options.key,
+            options.git_sync,
+            options.sync_binhost_conf,
+            options.upload_board_tarball,
+            None,
+            [],
+            "",
+            [],
+            "",
+        )
+        host_mock.assert_called_once_with(
+            options.key, options.git_sync, options.sync_binhost_conf
+        )
 
 
 class TestSdk(cros_test_lib.MockTestCase):
-  """Test logic related to uploading SDK binaries"""
+    """Test logic related to uploading SDK binaries"""
 
-  def setUp(self):
-    self.PatchObject(prebuilt, '_GsUpload',
-                     side_effect=Exception('should not get called'))
-    self.PatchObject(prebuilt, 'UpdateBinhostConfFile',
-                     side_effect=Exception('should not get called'))
-    self.upload_mock = self.PatchObject(prebuilt.PrebuiltUploader, '_Upload')
+    def setUp(self):
+        self.PatchObject(
+            prebuilt,
+            "_GsUpload",
+            side_effect=Exception("should not get called"),
+        )
+        self.PatchObject(
+            prebuilt,
+            "UpdateBinhostConfFile",
+            side_effect=Exception("should not get called"),
+        )
+        self.upload_mock = self.PatchObject(
+            prebuilt.PrebuiltUploader, "_Upload"
+        )
 
-    self.acl = 'magic-acl'
+        self.acl = "magic-acl"
 
-    # All these args pretty much get ignored.  Whee.
-    self.uploader = prebuilt.PrebuiltUploader(
-        'gs://foo', self.acl, 'prebuilt', [], '/', [],
-        False, 'foo', False, 'x86-foo', [], 'chroot-1234')
+        # All these args pretty much get ignored.  Whee.
+        self.uploader = prebuilt.PrebuiltUploader(
+            "gs://foo",
+            self.acl,
+            "prebuilt",
+            [],
+            "/",
+            [],
+            False,
+            "foo",
+            False,
+            "x86-foo",
+            [],
+            "chroot-1234",
+        )
 
-  def testSdkUpload(self, to_tarballs=(), to_upload_path=None,
-                    tc_tarballs=(), tc_upload_path=None):
-    """Make sure we can upload just an SDK tarball"""
-    tar = 'sdk.tar.xz'
-    ver = '1234'
-    vtar = 'cros-sdk-%s.tar.xz' % ver
+    def testSdkUpload(
+        self,
+        to_tarballs=(),
+        to_upload_path=None,
+        tc_tarballs=(),
+        tc_upload_path=None,
+    ):
+        """Make sure we can upload just an SDK tarball"""
+        tar = "sdk.tar.xz"
+        ver = "1234"
+        vtar = "cros-sdk-%s.tar.xz" % ver
 
-    calls = [
-        mock.call('%s.Manifest' % tar,
-                  'gs://chromiumos-sdk/%s.Manifest' % vtar),
-        mock.call(tar, 'gs://chromiumos-sdk/%s' % vtar),
-    ]
-    for to in to_tarballs:
-      to = to.split(':')
-      calls.append(mock.call(
-          to[1],
-          ('gs://chromiumos-sdk/' + to_upload_path) % {'toolchains': to[0]}))
-    for tc in tc_tarballs:
-      tc = tc.split(':')
-      calls.append(mock.call(
-          tc[1], ('gs://chromiumos-sdk/' + tc_upload_path) % {'target': tc[0]}))
-    calls.append(mock.call(
-        mock.ANY, 'gs://chromiumos-sdk/cros-sdk-latest.conf'))
+        calls = [
+            mock.call(
+                "%s.Manifest" % tar, "gs://chromiumos-sdk/%s.Manifest" % vtar
+            ),
+            mock.call(tar, "gs://chromiumos-sdk/%s" % vtar),
+        ]
+        for to in to_tarballs:
+            to = to.split(":")
+            calls.append(
+                mock.call(
+                    to[1],
+                    ("gs://chromiumos-sdk/" + to_upload_path)
+                    % {"toolchains": to[0]},
+                )
+            )
+        for tc in tc_tarballs:
+            tc = tc.split(":")
+            calls.append(
+                mock.call(
+                    tc[1],
+                    ("gs://chromiumos-sdk/" + tc_upload_path)
+                    % {"target": tc[0]},
+                )
+            )
+        calls.append(
+            mock.call(mock.ANY, "gs://chromiumos-sdk/cros-sdk-latest.conf")
+        )
 
-    self.uploader._UploadSdkTarball('amd64-host', '',
-                                    tar, to_tarballs, to_upload_path,
-                                    tc_tarballs, tc_upload_path)
-    self.upload_mock.assert_has_calls(calls)
+        self.uploader._UploadSdkTarball(
+            "amd64-host",
+            "",
+            tar,
+            to_tarballs,
+            to_upload_path,
+            tc_tarballs,
+            tc_upload_path,
+        )
+        self.upload_mock.assert_has_calls(calls)
 
-  def testBoardOverlayTarballUpload(self):
-    """Make sure processing of board-specific overlay tarballs works."""
-    to_tarballs = (
-        ('i686-pc-linux-gnu:'
-         '/some/path/built-sdk-overlay-toolchains-i686-pc-linux-gnu.tar.xz'),
-        ('armv7a-cros-linux-gnueabi-arm-none-eabi:'
-         '/some/path/built-sdk-overlay-toolchains-armv7a-cros-linux-gnueabi-'
-         'arm-none-eabi'),
-    )
-    to_upload_path = (
-        '1994/04/cros-sdk-overlay-toolchains-%(toolchains)s-1994.04.02.tar.xz')
-    self.testSdkUpload(to_tarballs=to_tarballs, to_upload_path=to_upload_path)
+    def testBoardOverlayTarballUpload(self):
+        """Make sure processing of board-specific overlay tarballs works."""
+        to_tarballs = (
+            (
+                "i686-pc-linux-gnu:"
+                "/some/path/built-sdk-overlay-toolchains-i686-pc-linux-gnu.tar.xz"
+            ),
+            (
+                "armv7a-cros-linux-gnueabi-arm-none-eabi:"
+                "/some/path/built-sdk-overlay-toolchains-armv7a-cros-linux-gnueabi-"
+                "arm-none-eabi"
+            ),
+        )
+        to_upload_path = "1994/04/cros-sdk-overlay-toolchains-%(toolchains)s-1994.04.02.tar.xz"
+        self.testSdkUpload(
+            to_tarballs=to_tarballs, to_upload_path=to_upload_path
+        )
 
-  def testToolchainTarballUpload(self):
-    """Make sure processing of toolchain tarballs works."""
-    tc_tarballs = (
-        'i686:/some/i686.tar.xz',
-        'arm-none:/some/arm.tar.xz',
-    )
-    tc_upload_path = '1994/04/%(target)s-1994.04.02.tar.xz'
-    self.testSdkUpload(tc_tarballs=tc_tarballs, tc_upload_path=tc_upload_path)
+    def testToolchainTarballUpload(self):
+        """Make sure processing of toolchain tarballs works."""
+        tc_tarballs = (
+            "i686:/some/i686.tar.xz",
+            "arm-none:/some/arm.tar.xz",
+        )
+        tc_upload_path = "1994/04/%(target)s-1994.04.02.tar.xz"
+        self.testSdkUpload(
+            tc_tarballs=tc_tarballs, tc_upload_path=tc_upload_path
+        )