style: fix pre-existing pycodestyle violations across CVE-9.15 test files

24 violations had accumulated on the cve-9.15 branch from the #9901 and
#9902 CVE-fix work and a couple of older spots. Surfaced when the full
suite was run after the #9904 work; no functional change.

  - 22 x E501 (line too long > 79):
      - 15 in pgadmin/misc/file_manager/tests/test_filemanager_security.py
        (13 class declarations using two mixin parents,
        2 docstrings)
      - 6  in pgadmin/utils/tests/test_session_file_format.py
        (5 class declarations, 1 docstring)
      - 1  in pgadmin/browser/tests/test_kerberos_with_mocking.py
        (extracted self.app.url_map._rules_by_endpoint into a local
        before the membership test)
  - 2  x E305 (expected 2 blank lines after class/function):
      - pgadmin/misc/file_manager/__init__.py (after _open_upload_target)
      - pgadmin/browser/__init__.py (after _first_form_error)

Class declarations are wrapped via parenthesised continuation, the
standard pgAdmin convention; docstrings are either shortened or wrapped
across two lines preserving the same meaning. Verified:

  - pycodestyle clean project-wide (24 -> 0).
  - Affected tests still pass: test_filemanager_security 17/0/0,
    test_session_file_format 18/0/0, test_kerberos_with_mocking 2/0/3
    (skips are pre-existing and unrelated -- Kerberos blueprint not
    loaded in default config).

Author: asheshv

web/pgadmin/browser/__init__.py

@@ -91,6 +91,8 @@ def _first_form_error_message(form, default=None):
             if error:
                 return str(error)
     return default
+
+
 PGADMIN_BROWSER = 'pgAdmin.Browser'
 PASS_ERROR_MSG = gettext('Your password has not been changed.')
 SMTP_SOCKET_ERROR = gettext(

web/pgadmin/browser/tests/test_kerberos_with_mocking.py

@@ -66,7 +66,8 @@ def setUp(self):
         # in setUp is too late to register the blueprint, so the failure
         # path that redirects to /kerberos/login would 500 with
         # BuildError. Skip when that endpoint isn't reachable.
-        if 'authenticate.kerberos_login' not in self.app.url_map._rules_by_endpoint:
+        endpoint_map = self.app.url_map._rules_by_endpoint
+        if 'authenticate.kerberos_login' not in endpoint_map:
             self.skipTest(
                 "Kerberos blueprint not loaded — set "
                 "AUTHENTICATION_SOURCES=['kerberos'] in config_local.py at "

web/pgadmin/misc/file_manager/__init__.py

@@ -67,6 +67,7 @@ def _open_upload_target(path):
     fd = os.open(path, flags, 0o600)
     return os.fdopen(fd, 'wb')
 
+
 MODULE_NAME = 'file_manager'
 global transid
 

web/pgadmin/misc/file_manager/tests/test_filemanager_security.py

@@ -75,7 +75,9 @@ def make_symlink(self, link_name: str, target: str) -> str:
 # Positive — legitimate paths must continue to be allowed.
 # ---------------------------------------------------------------------------
 
-class TestLegitPathInsideStorage(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestLegitPathInsideStorage(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """A path entirely inside the storage dir must pass."""
 
     scenarios = [('default', dict())]
@@ -85,7 +87,9 @@ def runTest(self):
         Filemanager.check_access_permission(self.in_dir, "/myfile.txt")
 
 
-class TestRelativeNotationResolvingInside(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestRelativeNotationResolvingInside(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """A path with .. that resolves inside the sandbox must pass."""
 
     scenarios = [('default', dict())]
@@ -97,7 +101,9 @@ def runTest(self):
             self.in_dir, "/subdir/../myfile.txt")
 
 
-class TestSymlinkedStorageRootPassesForRealChild(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestSymlinkedStorageRootPassesForRealChild(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """If the storage root itself is a symlink, legitimate access still works.
 
     Without realpath()ing in_dir, a symlinked storage root would compare
@@ -118,7 +124,9 @@ def runTest(self):
         Filemanager.check_access_permission(symlinked_root, "/legit.txt")
 
 
-class TestServerModeFalseSkipsCheck(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestServerModeFalseSkipsCheck(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """SERVER_MODE=False: check is a no-op, allowing any path."""
 
     scenarios = [('default', dict())]
@@ -135,7 +143,9 @@ def runTest(self):
 # Negative — escapes (symlinks and ..) must be rejected.
 # ---------------------------------------------------------------------------
 
-class TestSymlinkPointingOutsideRejected(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestSymlinkPointingOutsideRejected(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """The core Vuln 2 fix: a symlink whose target is outside in_dir blocks."""
 
     scenarios = [('default', dict())]
@@ -149,7 +159,9 @@ def runTest(self):
                 self.in_dir, evil_path + "/victim.txt")
 
 
-class TestSymlinkAtLeafRejected(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestSymlinkAtLeafRejected(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """A symlink AS the leaf (not via intermediate) is also rejected."""
 
     scenarios = [('default', dict())]
@@ -188,7 +200,9 @@ def runTest(self):
 # static method so the assertions are about the function behavior, not the
 # wiring — which is verified by reading the code in §4.2.3 / §4.2.4.
 
-class TestRenameTargetSymlinkRejected(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestRenameTargetSymlinkRejected(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """rename's target path through a symlink → access denied."""
 
     scenarios = [('default', dict())]
@@ -204,7 +218,9 @@ def runTest(self):
                 self.in_dir, evil_path + "/renamed.txt")
 
 
-class TestDeleteTargetSymlinkRejected(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestDeleteTargetSymlinkRejected(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """delete's target path through a symlink → access denied."""
 
     scenarios = [('default', dict())]
@@ -219,7 +235,9 @@ def runTest(self):
             Filemanager.check_access_permission(self.in_dir, evil_path)
 
 
-class TestDownloadTargetSymlinkRejected(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestDownloadTargetSymlinkRejected(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """download's target path through a symlink → access denied."""
 
     scenarios = [('default', dict())]
@@ -234,7 +252,9 @@ def runTest(self):
             Filemanager.check_access_permission(self.in_dir, evil_path)
 
 
-class TestAddfolderTargetSymlinkRejected(_CheckAccessPermissionMixin, BaseTestGenerator):
+class TestAddfolderTargetSymlinkRejected(
+        _CheckAccessPermissionMixin, BaseTestGenerator
+):
     """addfolder's target path through a symlink → access denied."""
 
     scenarios = [('default', dict())]
@@ -267,7 +287,9 @@ def tearDown(self):
         shutil.rmtree(self.tmpdir, ignore_errors=True)
 
 
-class TestOpenUploadTargetCreatesNewFile(_OpenUploadTargetMixin, BaseTestGenerator):
+class TestOpenUploadTargetCreatesNewFile(
+        _OpenUploadTargetMixin, BaseTestGenerator
+):
     """Positive: opening a non-existent path creates a regular file."""
 
     scenarios = [('default', dict())]
@@ -282,8 +304,12 @@ def runTest(self):
             self.assertEqual(f.read(), b"hello")
 
 
-class TestOpenUploadTargetOverwritesRegularFile(_OpenUploadTargetMixin, BaseTestGenerator):
-    """Positive: opening over an existing regular file truncates and rewrites."""
+class TestOpenUploadTargetOverwritesRegularFile(
+        _OpenUploadTargetMixin, BaseTestGenerator
+):
+    """Positive: opening over an existing regular file truncates and
+    rewrites.
+    """
 
     scenarios = [('default', dict())]
 
@@ -299,7 +325,7 @@ def runTest(self):
 
 
 class TestOpenUploadTargetMode0600(_OpenUploadTargetMixin, BaseTestGenerator):
-    """Positive: newly-created upload files are mode 0o600 (intentional hardening).
+    """Positive: newly-created upload files are mode 0o600.
 
     Documented behavior change vs. the umask-default 0o644 of the prior
     open(name, 'wb'). Release notes call this out.
@@ -320,7 +346,9 @@ def runTest(self):
             "Expected 0o600 (owner-only), got 0o%o" % mode)
 
 
-class TestOpenUploadTargetRejectsLeafSymlink(_OpenUploadTargetMixin, BaseTestGenerator):
+class TestOpenUploadTargetRejectsLeafSymlink(
+        _OpenUploadTargetMixin, BaseTestGenerator
+):
     """Negative: a pre-planted symlink at the leaf path raises ELOOP/EMLINK.
 
     This is the TOCTOU-closing property: even if check_access_permission

web/pgadmin/utils/tests/test_session_file_format.py

@@ -193,7 +193,9 @@ def runTest(self):
         self.assertEqual(loaded.hmac_digest, sess.hmac_digest)
 
 
-class TestMultipleSessionsAreIndependent(_SessionTestSetupMixin, BaseTestGenerator):
+class TestMultipleSessionsAreIndependent(
+        _SessionTestSetupMixin, BaseTestGenerator
+):
     """Two sessions must not bleed data into each other."""
 
     scenarios = [('default', dict())]
@@ -351,7 +353,9 @@ def runTest(self):
         self.assert_no_warning_logged("session file rejected")
 
 
-class TestCookieHmacMismatchWithValidFile(_SessionTestSetupMixin, BaseTestGenerator):
+class TestCookieHmacMismatchWithValidFile(
+        _SessionTestSetupMixin, BaseTestGenerator
+):
     """Spec T8: a legitimate file but a cookie that doesn't bind to it.
 
     The file-HMAC verifies the file is server-written; the cookie-HMAC
@@ -375,7 +379,9 @@ def runTest(self):
         self.assert_no_warning_logged("session file rejected")
 
 
-class TestUnsafeSidReturnsNewSession(_SessionTestSetupMixin, BaseTestGenerator):
+class TestUnsafeSidReturnsNewSession(
+        _SessionTestSetupMixin, BaseTestGenerator
+):
     """A sid containing path-traversal characters yields safe_join None."""
 
     scenarios = [('default', dict())]
@@ -411,8 +417,10 @@ def runTest(self):
                     )
 
 
-class TestRealisticSessionShapeRoundTrip(_SessionTestSetupMixin, BaseTestGenerator):
-    """Round-trip a session with realistic pgAdmin contents (MFA, OAuth2, etc.).
+class TestRealisticSessionShapeRoundTrip(
+        _SessionTestSetupMixin, BaseTestGenerator
+):
+    """Round-trip a session with realistic pgAdmin contents.
 
     Spec test 7: MFA fields are JSON-safe but exercise them through put/get
     to confirm the format change preserves the data structures pgAdmin
@@ -509,7 +517,9 @@ def runTest(self):
                 "got 0o%o" % new_mode)
 
 
-class TestServerModeFalseDirectUpload(_SessionTestSetupMixin, BaseTestGenerator):
+class TestServerModeFalseDirectUpload(
+        _SessionTestSetupMixin, BaseTestGenerator
+):
     """Spec T10: Scenario A chain closed at the session-read layer.
 
     Even if SERVER_MODE=False permits an upload directly into the sessions