.

wcfs/test.sh

@@ -14,4 +14,4 @@ py.test	\
 	`# https://stackoverflow.com/a/47893653/9456786`	\
 	-p no:cacheprovider	\
  \
-	-vsx -k test_wcfs
+	-vsx -k test_tidtime_notrough

wcfs/wcfs_test.py

@@ -787,10 +787,13 @@ def tidtime(tid):
     # NOTE pytest.approx supports only ==, not e.g. <, so we use plain round.
     return round(t, 6)
 
+# verify that tidtime is precise enough to show difference in between transactions.
+@func
 def test_tidtime_notrough():
     t = tDB()
     defer(t.close)
 
-    at0 = t.commit()
-    at1 = t.commit()
-    assert tidtime(at1) > tidtime(at0)
+    atprev = t.commit()
+    for i in range(10):
+        at = t.commit()
+        assert tidtime(at) > tidtime(atprev)