diff --git a/unittests/unittests_core/core_test_suite.py b/unittests/unittests_core/core_test_suite.py
index ce89f776..a50d9b90 100644
--- a/unittests/unittests_core/core_test_suite.py
+++ b/unittests/unittests_core/core_test_suite.py
@@ -1,5 +1,7 @@
 import unittest
 
+from unittests_core.utils.credential_manager_test_case import CredentialManagerTestCase
+from unittests_core.utils.json_processor_test_case import JSONProcessorTestCase
 from unittests_core.utils.string_test_case import StringTestCase
 
 
@@ -8,6 +10,8 @@ class CoreTestSuite(unittest.TestSuite):
         unittest.TestSuite.__init__(self)
 
         loader = unittest.TestLoader()
+        self.addTests(loader.loadTestsFromTestCase(CredentialManagerTestCase))
+        self.addTests(loader.loadTestsFromTestCase(JSONProcessorTestCase))
         self.addTests(loader.loadTestsFromTestCase(StringTestCase))
 
     def run(self, *args):
diff --git a/unittests/unittests_core/utils/credential_manager_test_case.py b/unittests/unittests_core/utils/credential_manager_test_case.py
index f1991eb4..c602dfa1 100644
--- a/unittests/unittests_core/utils/credential_manager_test_case.py
+++ b/unittests/unittests_core/utils/credential_manager_test_case.py
@@ -1,10 +1,40 @@
 import unittest
 
+from cpl_core.utils import CredentialManager
+
 
 class CredentialManagerTestCase(unittest.TestCase):
-
     def setUp(self):
         pass
 
-    def test_equal(self):
-        pass
+    def test_encrypt(self):
+        self.assertEqual("ZkVjSkplQUx4aW1zWHlPbA==", CredentialManager.encrypt("fEcJJeALximsXyOl"))
+        self.assertEqual("QmtVd1l4dW5Sck9jRmVTQQ==", CredentialManager.encrypt("BkUwYxunRrOcFeSA"))
+        self.assertEqual("c2FtaHF1VkNSdmZpSGxDcQ==", CredentialManager.encrypt("samhquVCRvfiHlCq"))
+        self.assertEqual("S05aWHBPYW9DbkRSV01rWQ==", CredentialManager.encrypt("KNZXpOaoCnDRWMkY"))
+        self.assertEqual("QmtUV0Zsb3h1Y254UkJWeg==", CredentialManager.encrypt("BkTWFloxucnxRBVz"))
+        self.assertEqual("VFdNTkRuYXB1b1dndXNKdw==", CredentialManager.encrypt("TWMNDnapuoWgusJw"))
+        self.assertEqual("WVRiQXVSZXRMblpicWNrcQ==", CredentialManager.encrypt("YTbAuRetLnZbqckq"))
+        self.assertEqual("bmN4aExackxhYUVVdnV2VA==", CredentialManager.encrypt("ncxhLZrLaaEUvuvT"))
+        self.assertEqual("dmpNT0J5U0lLQmFrc0pIYQ==", CredentialManager.encrypt("vjMOBySIKBaksJHa"))
+        self.assertEqual("ZHd6WHFzSlFvQlhRbGtVZw==", CredentialManager.encrypt("dwzXqsJQoBXQlkUg"))
+        self.assertEqual("Q0lmUUhOREtiUmxnY2VCbQ==", CredentialManager.encrypt("CIfQHNDKbRlgceBm"))
+
+    def test_decrypt(self):
+        self.assertEqual("fEcJJeALximsXyOl", CredentialManager.decrypt("ZkVjSkplQUx4aW1zWHlPbA=="))
+        self.assertEqual("BkUwYxunRrOcFeSA", CredentialManager.decrypt("QmtVd1l4dW5Sck9jRmVTQQ=="))
+        self.assertEqual("samhquVCRvfiHlCq", CredentialManager.decrypt("c2FtaHF1VkNSdmZpSGxDcQ=="))
+        self.assertEqual("KNZXpOaoCnDRWMkY", CredentialManager.decrypt("S05aWHBPYW9DbkRSV01rWQ=="))
+        self.assertEqual("BkTWFloxucnxRBVz", CredentialManager.decrypt("QmtUV0Zsb3h1Y254UkJWeg=="))
+        self.assertEqual("TWMNDnapuoWgusJw", CredentialManager.decrypt("VFdNTkRuYXB1b1dndXNKdw=="))
+        self.assertEqual("YTbAuRetLnZbqckq", CredentialManager.decrypt("WVRiQXVSZXRMblpicWNrcQ=="))
+        self.assertEqual("ncxhLZrLaaEUvuvT", CredentialManager.decrypt("bmN4aExackxhYUVVdnV2VA=="))
+        self.assertEqual("vjMOBySIKBaksJHa", CredentialManager.decrypt("dmpNT0J5U0lLQmFrc0pIYQ=="))
+        self.assertEqual("dwzXqsJQoBXQlkUg", CredentialManager.decrypt("ZHd6WHFzSlFvQlhRbGtVZw=="))
+        self.assertEqual("CIfQHNDKbRlgceBm", CredentialManager.decrypt("Q0lmUUhOREtiUmxnY2VCbQ=="))
+
+    def test_build_string(self):
+        self.assertEqual(
+            "TestStringWithCredentialsfEcJJeALximsXyOlHere",
+            CredentialManager.build_string("TestStringWithCredentials$credentialsHere", "ZkVjSkplQUx4aW1zWHlPbA=="),
+        )
diff --git a/unittests/unittests_core/utils/json_processor_test_case.py b/unittests/unittests_core/utils/json_processor_test_case.py
new file mode 100644
index 00000000..4f969a9d
--- /dev/null
+++ b/unittests/unittests_core/utils/json_processor_test_case.py
@@ -0,0 +1,38 @@
+import unittest
+
+from cpl_core.utils.json_processor import JSONProcessor
+
+
+class SubTestClass:
+    def __init__(self, value: str = None):
+        self.value = value
+
+
+class TestClass:
+    def __init__(self, i: int = None, s: str = None, d: dict = None, l: list = None, value: SubTestClass = None):
+        self.i = i
+        self.s = s
+        self.d = d
+        self.l = l
+        self.value = value
+
+
+class JSONProcessorTestCase(unittest.TestCase):
+    def setUp(self):
+        pass
+
+    def test_process(self):
+        test_dict = {
+            "i": 10,
+            "s": "Hello World",
+            "d": {"test": "Test"},
+            "l": range(0, 11),
+            "value": {"value": "Hello World"},
+        }
+        test: TestClass = JSONProcessor.process(TestClass, test_dict)
+
+        self.assertEqual(test.i, test_dict["i"])
+        self.assertEqual(test.s, test_dict["s"])
+        self.assertEqual(test.d, test_dict["d"])
+        self.assertEqual(test.l, test_dict["l"])
+        self.assertEqual(test.value.value, test_dict["value"]["value"])
diff --git a/unittests/unittests_core/utils/string_test_case.py b/unittests/unittests_core/utils/string_test_case.py
index 665117e4..7a5173f2 100644
--- a/unittests/unittests_core/utils/string_test_case.py
+++ b/unittests/unittests_core/utils/string_test_case.py
@@ -5,7 +5,6 @@ from cpl_core.utils import String
 
 
 class StringTestCase(unittest.TestCase):
-
     def setUp(self):
         pass