diff --git a/services/tunnelbroker/test/ToolsTest.cpp b/services/tunnelbroker/test/ToolsTest.cpp
new file mode 100644
--- /dev/null
+++ b/services/tunnelbroker/test/ToolsTest.cpp
@@ -0,0 +1,53 @@
+#include "Tools.h"
+#include "Constants.h"
+
+#include <gtest/gtest.h>
+
+#include <string>
+
+using namespace comm::network;
+
+class ToolsTest : public testing::Test {};
+
+TEST_F(ToolsTest, TestOperationsOnGenerateRandomString) {
+  const std::size_t length = 32;
+  const std::string generated = tools::generateRandomString(length);
+  EXPECT_EQ(generated.length(), length)
+      << "Generated random string \"" << generated << "\" length "
+      << generated.length() << " is not equal to " << length;
+}
+
+TEST_F(ToolsTest, TestOperationsOnValidateDeviceIDValid) {
+  const std::string validDeviceID =
+      "mobile:" + tools::generateRandomString(DEVICEID_CHAR_LENGTH);
+  EXPECT_EQ(tools::validateDeviceID(validDeviceID), true)
+      << "Valid generated deviceID \"" << validDeviceID
+      << "\" is invalid by the function";
+}
+
+TEST_F(ToolsTest, TestOperationsOnValidateDeviceIDInvalid) {
+  const std::string invalidDeviceIDPrefix =
+      "invalid-" + tools::generateRandomString(DEVICEID_CHAR_LENGTH);
+  EXPECT_EQ(tools::validateDeviceID(invalidDeviceIDPrefix), false)
+      << "Invalid prefix generated deviceID \"" << invalidDeviceIDPrefix
+      << "\" is valid by the function";
+  const std::string invalidDeviceIDSuffix =
+      "mobile:" + tools::generateRandomString(DEVICEID_CHAR_LENGTH - 1);
+  EXPECT_EQ(tools::validateDeviceID(invalidDeviceIDSuffix), false)
+      << "Invalid suffix generated deviceID \"" << invalidDeviceIDSuffix
+      << "\" is valid by the function";
+}
+
+TEST_F(ToolsTest, TestOperationsOnValidateSessionIDValid) {
+  const std::string validSessionID = tools::generateUUID();
+  EXPECT_EQ(tools::validateSessionID(validSessionID), true)
+      << "Valid generated sessionID \"" << validSessionID
+      << "\" is invalid by the function";
+}
+
+TEST_F(ToolsTest, TestOperationsOnValidateSessionIDInvalid) {
+  const std::string invalidSessionID = tools::generateRandomString(32);
+  EXPECT_EQ(tools::validateSessionID(invalidSessionID), false)
+      << "Invalid generated sessionID \"" << invalidSessionID
+      << "\" is valid by the function";
+}