[git_cl] Parametrize email in ShouldUseSSO

Moves the dependency on Git+cwd up the call stack

Bug: b/351071334
Change-Id: Ia313f9d4720ee10398b757217c333118e9fc7341
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/5723091
Reviewed-by: Yiwei Zhang <yiwzhang@google.com>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Allen Li <ayatane@chromium.org>

gerrit_util.py

@@ -171,8 +171,8 @@ class SSOHelper(object):
 ssoHelper = SSOHelper()
 
 
-def ShouldUseSSO(cwd: str, host: str) -> bool:
-    """Return True if we should use SSO for the current user."""
+def ShouldUseSSO(host: str, email: str) -> bool:
+    """Return True if we should use SSO for the given Gerrit host and user."""
     LOGGER.debug("Determining whether we should use SSO...")
     if not newauth.Enabled():
         LOGGER.debug("SSO=False: not opted in")
@@ -183,7 +183,6 @@ def ShouldUseSSO(cwd: str, host: str) -> bool:
     if not ssoHelper.find_cmd():
         LOGGER.debug("SSO=False: no SSO command")
         return False
-    email = scm.GIT.GetConfig(cwd, 'user.email', default='')
     if email.endswith('@google.com'):
         LOGGER.debug("SSO=True: email is google.com")
         return True
@@ -363,9 +362,9 @@ class SSOAuthenticator(_Authenticator):
     def is_applicable(cls, *, conn: Optional[HttpConn] = None) -> bool:
         if not cls._resolve_sso_cmd():
             return False
+        email: str = scm.GIT.GetConfig(os.getcwd(), 'user.email', default='')
         if conn is not None:
-            return ShouldUseSSO(os.getcwd(), conn.host)
-        email = scm.GIT.GetConfig(os.getcwd(), 'user.email', default='')
+            return ShouldUseSSO(conn.host, email)
         return email.endswith('@google.com')
 
     @classmethod

git_cl.py

@@ -3759,7 +3759,8 @@ class GitAuthConfigChanger(object):
         """Infer default mode to use."""
         if not newauth.Enabled():
             return GitConfigMode.OLD_AUTH
-        if gerrit_util.ShouldUseSSO(cwd, gerrit_host):
+        email: str = scm.GIT.GetConfig(cwd, 'user.email', default='')
+        if gerrit_util.ShouldUseSSO(gerrit_host, email):
             return GitConfigMode.NEW_AUTH_SSO
         return GitConfigMode.NEW_AUTH
 

tests/gerrit_util_test.py

@@ -736,36 +736,36 @@ class ShouldUseSSOTest(unittest.TestCase):
 
     def testDisabled(self):
         self.newauth.return_value = False
-        self.assertFalse(gerrit_util.ShouldUseSSO('/', 'fake-host'))
+        self.assertFalse(gerrit_util.ShouldUseSSO('fake-host', ''))
 
     def testMissingCommand(self):
         self.sso.return_value = 'fake-host'
-        self.assertFalse(gerrit_util.ShouldUseSSO('/', 'fake-host'))
+        self.assertFalse(gerrit_util.ShouldUseSSO('fake-host', ''))
 
-    @mock.patch('scm.GIT.GetConfig', return_value='firefly@google.com')
-    def testGoogle(self, _):
-        self.assertTrue(gerrit_util.ShouldUseSSO('/', 'fake-host'))
+    def testGoogle(self):
+        self.assertTrue(
+            gerrit_util.ShouldUseSSO('fake-host', 'firefly@google.com'))
 
-    @mock.patch('scm.GIT.GetConfig', return_value='firefly@gmail.com')
-    def testGmail(self, _):
-        self.assertFalse(gerrit_util.ShouldUseSSO('/', 'fake-host'))
+    def testGmail(self):
+        self.assertFalse(
+            gerrit_util.ShouldUseSSO('fake-host', 'firefly@gmail.com'))
 
     @mock.patch('gerrit_util.GetAccountEmails',
                 return_value=[{
                     'email': 'firefly@chromium.org'
                 }])
-    @mock.patch('scm.GIT.GetConfig', return_value='firefly@chromium.org')
-    def testLinkedChromium(self, _cfg, email):
-        self.assertTrue(gerrit_util.ShouldUseSSO('/', 'fake-host'))
+    def testLinkedChromium(self, email):
+        self.assertTrue(
+            gerrit_util.ShouldUseSSO('fake-host', 'firefly@chromium.org'))
         email.assert_called_with('fake-host', 'self', authenticator=mock.ANY)
 
     @mock.patch('gerrit_util.GetAccountEmails',
                 return_value=[{
                     'email': 'firefly@google.com'
                 }])
-    @mock.patch('scm.GIT.GetConfig', return_value='firefly@chromium.org')
-    def testUnlinkedChromium(self, _cfg, email):
-        self.assertFalse(gerrit_util.ShouldUseSSO('/', 'fake-host'))
+    def testUnlinkedChromium(self, email):
+        self.assertFalse(
+            gerrit_util.ShouldUseSSO('fake-host', 'firefly@chromium.org'))
         email.assert_called_with('fake-host', 'self', authenticator=mock.ANY)