test(dmesg,vipw): expect no options on macOS

Author: scop

test/t/test_dmesg.py

@@ -1,7 +1,12 @@
+import sys
+
 import pytest
 
 
 class TestDmesg:
     @pytest.mark.complete("dmesg -", require_cmd=True)
     def test_1(self, completion):
-        assert completion
+        if sys.platform == "darwin":
+            assert not completion  # takes no options
+        else:
+            assert completion

test/t/test_vipw.py

@@ -1,7 +1,12 @@
+import sys
+
 import pytest
 
 
 class TestVipw:
     @pytest.mark.complete("vipw -", require_cmd=True)
     def test_1(self, completion):
-        assert completion
+        if sys.platform == "darwin":
+            assert not completion  # takes no options
+        else:
+            assert completion