diff --git a/test/certs_manager_test.cpp b/test/certs_manager_test.cpp
index aaf491c..a2163a0 100644
--- a/test/certs_manager_test.cpp
+++ b/test/certs_manager_test.cpp
@@ -17,6 +17,9 @@
 using InternalFailure =
     sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;
 
+using InvalidCertificate =
+    sdbusplus::xyz::openbmc_project::Certs::Install::Error::InvalidCertificate;
+
 class TestCertsManager : public ::testing::Test
 {
   public:
@@ -166,3 +169,106 @@
     EXPECT_TRUE(fs::exists(verifyPath));
     EXPECT_TRUE(compareFiles(verifyPath, certificateFile));
 }
+
+/** @brief Check if install fails if certificate file is not found
+ */
+TEST_F(TestCertsManager, TestNoCertificateFile)
+{
+    std::string endpoint("ldap");
+    std::string unit("nslcd.service");
+    std::string type("client");
+    std::string path(certDir + "/" + certificateFile);
+    std::string verifyPath(path);
+    auto objPath = std::string(OBJPATH) + '/' + type + '/' + endpoint;
+    MockCertManager manager(bus, objPath.c_str(), type, std::move(unit),
+                            std::move(path));
+    EXPECT_CALL(manager, clientInstall()).Times(0);
+    MainApp mainApp(&manager);
+    std::string certpath = "nofile.pem";
+    EXPECT_THROW(
+        {
+            try
+            {
+                mainApp.install(certpath);
+            }
+            catch (const InternalFailure& e)
+            {
+                throw;
+            }
+        },
+        InternalFailure);
+    EXPECT_FALSE(fs::exists(verifyPath));
+}
+
+/** @brief Check if install fails if certificate file is empty
+ */
+TEST_F(TestCertsManager, TestEmptyCertificateFile)
+{
+    std::string endpoint("ldap");
+    std::string unit("nslcd.service");
+    std::string type("client");
+
+    std::string emptyFile("certcorrupted.pem");
+    std::ofstream ofs;
+    ofs.open(emptyFile, std::ofstream::out);
+    ofs.close();
+
+    std::string path(certDir + "/" + emptyFile);
+    std::string verifyPath(path);
+    auto objPath = std::string(OBJPATH) + '/' + type + '/' + endpoint;
+    MockCertManager manager(bus, objPath.c_str(), type, std::move(unit),
+                            std::move(path));
+    EXPECT_CALL(manager, clientInstall()).Times(0);
+    MainApp mainApp(&manager);
+    EXPECT_THROW(
+        {
+            try
+            {
+                mainApp.install(emptyFile);
+            }
+            catch (const InvalidCertificate& e)
+            {
+                throw;
+            }
+        },
+        InvalidCertificate);
+    EXPECT_FALSE(fs::exists(verifyPath));
+    fs::remove(emptyFile);
+}
+
+/** @brief Check if install fails if corrupted certificate file is not found
+ */
+TEST_F(TestCertsManager, TestInvalidCertificateFile)
+{
+    std::string endpoint("ldap");
+    std::string unit("nslcd.service");
+    std::string type("client");
+
+    std::string corrputedFile("certcorrupted.pem");
+    std::ofstream ofs;
+    ofs.open(corrputedFile, std::ofstream::out);
+    ofs << " PUBLIC KEY PRIVATE KEY XXXX YYYY ZZZZ";
+    ofs.close();
+
+    std::string path(certDir + "/" + corrputedFile);
+    std::string verifyPath(path);
+    auto objPath = std::string(OBJPATH) + '/' + type + '/' + endpoint;
+    MockCertManager manager(bus, objPath.c_str(), type, std::move(unit),
+                            std::move(path));
+    EXPECT_CALL(manager, clientInstall()).Times(0);
+    MainApp mainApp(&manager);
+    EXPECT_THROW(
+        {
+            try
+            {
+                mainApp.install(corrputedFile);
+            }
+            catch (const InvalidCertificate& e)
+            {
+                throw;
+            }
+        },
+        InvalidCertificate);
+    EXPECT_FALSE(fs::exists(verifyPath));
+    fs::remove(corrputedFile);
+}