diff --git a/os_date_test.dict b/os_date_test.dict
new file mode 100644
index 0000000000000..ac184d219dd94
--- /dev/null
+++ b/os_date_test.dict
@@ -0,0 +1,20 @@
+"!"
+"*t"
+"%a"
+"%A"
+"%b"
+"%B"
+"%c"
+"%d"
+"%H"
+"%I"
+"%M"
+"%m"
+"%p"
+"%S"
+"%w"
+"%x"
+"%X"
+"%Y"
+"%y"
+"%%"