diff --git a/include/ut/openbmc_dbus_rest_test.cpp b/include/ut/openbmc_dbus_rest_test.cpp
new file mode 100644
index 0000000..e671e47
--- /dev/null
+++ b/include/ut/openbmc_dbus_rest_test.cpp
@@ -0,0 +1,35 @@
+#include "include/openbmc_dbus_rest.hpp"
+
+#include "gtest/gtest.h"
+
+// Also see redfish-core/ut/configfile_test.cpp
+TEST(OpenbmcDbusRestTest, ValidFilenameGood)
+{
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("GoodConfigFile"));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("_Underlines_"));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("8675309"));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("-Dashes-"));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("With Spaces"));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("One.Dot"));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("trailingdot."));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename("-_ o _-"));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename(" "));
+    EXPECT_TRUE(crow::openbmc_mapper::validateFilename(" ."));
+}
+
+// There is no length test yet because validateFilename() does not care yet
+TEST(OpenbmcDbusRestTest, ValidFilenameBad)
+{
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename(""));
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename("Bad@file"));
+    EXPECT_FALSE(
+        crow::openbmc_mapper::validateFilename("/../../../../../etc/badpath"));
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename("/../../etc/badpath"));
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename("/mydir/configFile"));
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename("/"));
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename(".leadingdot"));
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename("Two..Dots"));
+    EXPECT_FALSE(
+        crow::openbmc_mapper::validateFilename("../../../../../../etc/shadow"));
+    EXPECT_FALSE(crow::openbmc_mapper::validateFilename("."));
+}