diff --git a/test/utest.cpp b/test/utest.cpp
new file mode 100644
index 0000000..bdca968
--- /dev/null
+++ b/test/utest.cpp
@@ -0,0 +1,210 @@
+#include <sys/stat.h>
+#include <string>
+#include <fstream>
+#include <experimental/filesystem>
+#include <gtest/gtest.h>
+#include <sdbusplus/bus.hpp>
+#include "user.hpp"
+namespace phosphor
+{
+namespace user
+{
+
+namespace fs = std::experimental::filesystem;
+
+constexpr auto path = "/dummy/user";
+constexpr auto testShadow = "/tmp/__tshadow__";
+constexpr auto shadowCopy = "/tmp/__tshadowCopy__";
+constexpr auto shadowCompare = "/tmp/__tshadowCompare__";
+
+// New password
+constexpr auto password = "passw0rd";
+
+constexpr auto MD5 = "1";
+constexpr auto SHA512 = "6";
+constexpr auto salt = "1G.cK/YP";
+
+// Example entry matching /etc/shadow structure
+constexpr auto spPwdp = "$1$1G.cK/YP$JI5t0oliPxZveXOvLcZ/H.:17344:1:90:7:::";
+
+class UserTest : public ::testing::Test
+{
+    public:
+        const std::string md5Salt = '$' + std::string(MD5) + '$'
+                                    + std::string(salt) + '$';
+        const std::string shaSalt = '$' + std::string(SHA512) + '$'
+                                    + std::string(salt) + '$';
+
+        const std::string entry = fs::path(path).filename().string() +
+                                  ':' + std::string(spPwdp);
+        sdbusplus::bus::bus bus;
+        phosphor::user::User user;
+
+        // Gets called as part of each TEST_F construction
+        UserTest()
+            : bus(sdbusplus::bus::new_default()),
+              user(bus, path)
+        {
+            // Create a shadow file entry
+            std::ofstream file(testShadow);
+            file << entry;
+            file.close();
+
+            // File to compare against
+            std::ofstream compare(shadowCompare);
+            compare << entry;
+            compare.close();
+        }
+
+        // Gets called as part of each TEST_F destruction
+        ~UserTest()
+        {
+            if (fs::exists(testShadow))
+            {
+                fs::remove(testShadow);
+            }
+
+            if (fs::exists(shadowCopy))
+            {
+                fs::remove(shadowCopy);
+            }
+
+            if (fs::exists(shadowCompare))
+            {
+                fs::remove(shadowCompare);
+            }
+        }
+
+        /** @brief wrapper for get crypt field */
+        auto getCryptField(char* data)
+        {
+            return User::getCryptField(
+                            std::forward<decltype(data)>(data));
+        }
+
+        /** @brief wrapper for getSaltString */
+        auto getSaltString(const std::string& crypt,
+                           const std::string& salt)
+        {
+            return User::getSaltString(
+                            std::forward<decltype(crypt)>(crypt),
+                                std::forward<decltype(salt)>(salt));
+        }
+
+        /** @brief wrapper for generateHash */
+        auto generateHash(const std::string& password,
+                          const std::string& salt)
+        {
+            return User::generateHash(
+                            std::forward<decltype(password)>(password),
+                                std::forward<decltype(salt)>(salt));
+        }
+
+        /** @brief Applies the new password */
+        auto applyPassword()
+        {
+            return user.applyPassword(testShadow, shadowCopy,
+                                      password, salt);
+        }
+};
+
+/** @brief Makes sure that SHA512 crypt field is extracted
+ */
+TEST_F(UserTest, sha512GetCryptField)
+{
+    auto salt = const_cast<char*>(shaSalt.c_str());
+    EXPECT_EQ(SHA512, this->getCryptField(salt));
+}
+
+/** @brief Makes sure that MD5 crypt field is extracted as default
+ */
+TEST_F(UserTest, md55GetCryptFieldDefault)
+{
+    auto salt = const_cast<char*>("hello");
+    EXPECT_EQ(MD5, this->getCryptField(salt));
+}
+
+/** @brief Makes sure that MD5 crypt field is extracted
+ */
+TEST_F(UserTest, md55GetCryptField)
+{
+    auto salt = const_cast<char*>(md5Salt.c_str());
+    EXPECT_EQ(MD5, this->getCryptField(salt));
+}
+
+/** @brief Makes sure that salt string is put within $$
+ */
+TEST_F(UserTest, getSaltString)
+{
+    EXPECT_EQ(md5Salt, this->getSaltString(MD5, salt));
+}
+
+/** @brief Makes sure hash is generated correctly
+ */
+TEST_F(UserTest, generateHash)
+{
+    std::string sample = crypt(password, md5Salt.c_str());
+    std::string actual = generateHash(password, md5Salt);
+    EXPECT_EQ(sample, actual);
+}
+
+/** @brief Verifies that the correct password is written to file
+ */
+TEST_F(UserTest, applyPassword)
+{
+    // Update the password
+    applyPassword();
+
+    // Read files and compare
+    std::ifstream shadow(testShadow);
+    std::ifstream copy(shadowCompare);
+
+    std::string shadowEntry;
+    shadow >> shadowEntry;
+
+    std::string shadowCompareEntry;
+    copy >> shadowCompareEntry;
+
+    EXPECT_EQ(shadowEntry, shadowCompareEntry);
+}
+
+/** @brief Verifies the shadow copy file is removed
+ */
+TEST_F(UserTest, checkShadowCopyRemove)
+{
+    // Update the password so that the temp file is in action
+    applyPassword();
+
+    // Compare the permission of 2 files
+    struct stat shadow{};
+    struct stat temp{};
+
+    stat(testShadow, &shadow);
+    stat(shadowCopy, &temp);
+    EXPECT_EQ(false, fs::exists(shadowCopy));
+}
+
+/** @brief Verifies the permissions are correct
+ */
+TEST_F(UserTest, verifyShadowPermission)
+{
+    // Change the permission to 400-> -r--------
+    chmod(testShadow, S_IRUSR);
+    chmod(shadowCompare, S_IRUSR);
+
+    // Update the password so that the temp file is in action
+    applyPassword();
+
+    // Compare the permission of 2 files.
+    // file rename would make sure that the permissions
+    // of old are moved to new
+    struct stat shadow{};
+    struct stat compare{};
+
+    stat(testShadow, &shadow);
+    stat(shadowCompare, &compare);
+    EXPECT_EQ(shadow.st_mode, compare.st_mode);
+}
+
+} // namespace user
+} // namespace phosphor