Forward port of #7471. Fixes #7470

src/borg/testsuite/archiver/diff_cmd.py

@@ -6,7 +6,7 @@ import unittest
 
 from ...constants import *  # NOQA
 from .. import are_symlinks_supported, are_hardlinks_supported
-from ..platform import is_win32
+from ..platform import is_win32, is_darwin
 from . import ArchiverTestCaseBase, RemoteArchiverTestCaseBase, ArchiverTestCaseBinaryBase, RK_ENCRYPTION, BORG_EXES
 
 
@@ -247,12 +247,16 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         if is_win32:
             # Sleeping for 15s because Windows doesn't refresh ctime if file is deleted and recreated within 15 seconds.
             time.sleep(15)
+        elif is_darwin:
+            time.sleep(1)  # HFS has a 1s timestamp granularity
         self.create_regular_file("test_file", size=15)
         self.cmd(f"--repo={self.repository_location}", "create", "archive2", "input")
         output = self.cmd(f"--repo={self.repository_location}", "diff", "archive1", "archive2")
         self.assert_in("mtime", output)
         self.assert_in("ctime", output)  # Should show up on windows as well since it is a new file.
-        os.chmod("input/test_file", 777)
+        if is_darwin:
+            time.sleep(1)  # HFS has a 1s timestamp granularity
+        os.chmod("input/test_file", 0o777)
         self.cmd(f"--repo={self.repository_location}", "create", "archive3", "input")
         output = self.cmd(f"--repo={self.repository_location}", "diff", "archive2", "archive3")
         self.assert_not_in("mtime", output)