--- a/tests/test-storage.py	Sat Oct 05 10:29:34 2019 -0400
+++ b/tests/test-storage.py	Sun Oct 06 09:45:02 2019 -0400
@@ -13,19 +13,16 @@
     vfs as vfsmod,
 )
 
-from mercurial.testing import (
-    storage as storagetesting,
-)
+from mercurial.testing import storage as storagetesting
 
 try:
-    from hgext import (
-        sqlitestore,
-    )
+    from hgext import sqlitestore
 except ImportError:
     sqlitestore = None
 
 try:
     import sqlite3
+
     if sqlite3.sqlite_version_info < (3, 8, 3):
         # WITH clause not supported
         sqlitestore = None
@@ -34,6 +31,7 @@
 
 try:
     from mercurial import zstd
+
     zstd.__version__
 except ImportError:
     zstd = None
@@ -44,20 +42,36 @@
     'vfs': vfsmod.vfs(b'.', realpath=True),
 }
 
+
 def makefilefn(self):
     """Factory for filelog instances."""
     fl = filelog.filelog(STATE['vfs'], b'filelog-%d' % STATE['lastindex'])
     STATE['lastindex'] += 1
     return fl
 
+
 def maketransaction(self):
     vfsmap = {b'plain': STATE['vfs'], b'store': STATE['vfs']}
 
-    return transaction.transaction(STATE['ui'].warn, STATE['vfs'], vfsmap,
-                                   b'journal', b'undo')
+    return transaction.transaction(
+        STATE['ui'].warn, STATE['vfs'], vfsmap, b'journal', b'undo'
+    )
+
 
-def addrawrevision(self, fl, tr, node, p1, p2, linkrev, rawtext=None,
-                   delta=None, censored=False, ellipsis=False, extstored=False):
+def addrawrevision(
+    self,
+    fl,
+    tr,
+    node,
+    p1,
+    p2,
+    linkrev,
+    rawtext=None,
+    delta=None,
+    censored=False,
+    ellipsis=False,
+    extstored=False,
+):
     flags = 0
 
     if censored:
@@ -70,8 +84,9 @@
     if rawtext is not None:
         fl._revlog.addrawrevision(rawtext, tr, linkrev, p1, p2, node, flags)
     elif delta is not None:
-        fl._revlog.addrawrevision(rawtext, tr, linkrev, p1, p2, node, flags,
-                                  cachedelta=delta)
+        fl._revlog.addrawrevision(
+            rawtext, tr, linkrev, p1, p2, node, flags, cachedelta=delta
+        )
     else:
         raise error.Abort('must supply rawtext or delta arguments')
 
@@ -79,17 +94,19 @@
     # bypass hash verification.
     fl._revlog.clearcaches()
 
+
 # Assigning module-level attributes that inherit from unittest.TestCase
 # is all that is needed to register tests.
-filelogindextests = storagetesting.makeifileindextests(makefilefn,
-                                                       maketransaction,
-                                                       addrawrevision)
-filelogdatatests = storagetesting.makeifiledatatests(makefilefn,
-                                                     maketransaction,
-                                                     addrawrevision)
-filelogmutationtests = storagetesting.makeifilemutationtests(makefilefn,
-                                                             maketransaction,
-                                                             addrawrevision)
+filelogindextests = storagetesting.makeifileindextests(
+    makefilefn, maketransaction, addrawrevision
+)
+filelogdatatests = storagetesting.makeifiledatatests(
+    makefilefn, maketransaction, addrawrevision
+)
+filelogmutationtests = storagetesting.makeifilemutationtests(
+    makefilefn, maketransaction, addrawrevision
+)
+
 
 def makesqlitefile(self):
     path = STATE['vfs'].join(b'db-%d.db' % STATE['lastindex'])
@@ -101,33 +118,51 @@
 
     return sqlitestore.sqlitefilestore(db, b'dummy-path', compression)
 
-def addrawrevisionsqlite(self, fl, tr, node, p1, p2, linkrev, rawtext=None,
-                         delta=None, censored=False, ellipsis=False,
-                         extstored=False):
+
+def addrawrevisionsqlite(
+    self,
+    fl,
+    tr,
+    node,
+    p1,
+    p2,
+    linkrev,
+    rawtext=None,
+    delta=None,
+    censored=False,
+    ellipsis=False,
+    extstored=False,
+):
     flags = 0
 
     if censored:
         flags |= sqlitestore.FLAG_CENSORED
 
     if ellipsis | extstored:
-        raise error.Abort(b'support for ellipsis and extstored flags not '
-                          b'supported')
+        raise error.Abort(
+            b'support for ellipsis and extstored flags not ' b'supported'
+        )
 
     if rawtext is not None:
         fl._addrawrevision(node, rawtext, tr, linkrev, p1, p2, flags=flags)
     elif delta is not None:
-        fl._addrawrevision(node, rawtext, tr, linkrev, p1, p2,
-                           storedelta=delta, flags=flags)
+        fl._addrawrevision(
+            node, rawtext, tr, linkrev, p1, p2, storedelta=delta, flags=flags
+        )
     else:
         raise error.Abort(b'must supply rawtext or delta arguments')
 
+
 if sqlitestore is not None:
     sqlitefileindextests = storagetesting.makeifileindextests(
-        makesqlitefile, maketransaction, addrawrevisionsqlite)
+        makesqlitefile, maketransaction, addrawrevisionsqlite
+    )
     sqlitefiledatatests = storagetesting.makeifiledatatests(
-        makesqlitefile, maketransaction, addrawrevisionsqlite)
+        makesqlitefile, maketransaction, addrawrevisionsqlite
+    )
     sqlitefilemutationtests = storagetesting.makeifilemutationtests(
-        makesqlitefile, maketransaction, addrawrevisionsqlite)
+        makesqlitefile, maketransaction, addrawrevisionsqlite
+    )
 
 if __name__ == '__main__':
     silenttestrunner.main(__name__)