diff --git a/tests/mocked/test_databases.py b/tests/mocked/test_databases.py
index 76375166..37dc1973 100644
--- a/tests/mocked/test_databases.py
+++ b/tests/mocked/test_databases.py
@@ -5,6 +5,71 @@
 
 from pydo import Client
 
+import uuid
+
+@responses.activate
+def test_databases_add(mock_client: Client, mock_client_url):
+    """Mocks the databases add database operation."""
+
+    expected = {
+                "db": {
+                        "name": "alpha"
+                    }
+                }
+
+    cluster_uuid = "9cc10173-e9ea-4176-9dbc-a4cee4c4ff30"
+
+    responses.add(
+        responses.POST,
+        f"{mock_client_url}/v2/databases/{cluster_uuid}/dbs",
+        json=expected,
+        status = 201, 
+    )
+
+    resp = mock_client.databases.add(cluster_uuid, {"name": "alpha"})
+
+    assert expected == resp
+
+
+@responses.activate
+def test_databases_add_connection_pool(mock_client: Client , mock_client_url):
+    """Mocks the databases add connection pool operation."""
+    
+    expected = {
+                "pool": {
+                        "user": "doadmin",
+                        "name": "backend-pool",
+                        "size": 10,
+                        "db": "defaultdb",
+                        "mode": "transaction",
+                        "connection": {
+                        "uri": "postgres://doadmin:wv78n3zpz42xezdk@backend-do-user-19081923-0.db.ondigitalocean.com:25061/backend-pool?sslmode=require",
+                        "database": "backend-pool",
+                        "host": "backend-do-user-19081923-0.db.ondigitalocean.com",
+                        "port": 25061,
+                        "user": "doadmin",
+                        "password": "wv78n3zpz42xezdk",
+                        "ssl": True
+                        }
+                    }
+                }
+
+    cluster_uuid = "9cc10173-e9ea-4176-9dbc-a4cee4c4ff30"
+
+    responses.add(
+        responses.POST,
+        f"{mock_client_url}/v2/databases/{cluster_uuid}/pools",
+        json = expected,
+        status = 201
+    )
+
+    resp = mock_client.databases.add_connection_pool(
+        cluster_uuid,
+        {"name": "backend-pool","mode": "transaction","size": 10,"db": "defaultdb","user": "doadmin"}    
+    )
+
+    assert expected == resp
+
 
 @responses.activate
 def test_databases_update_connection_pool(mock_client: Client, mock_client_url):
@@ -28,6 +93,113 @@ def test_databases_update_connection_pool(mock_client: Client, mock_client_url):
     assert resp is None
 
 
+@responses.activate
+def test_databases_create_cluster(mock_client: Client , mock_client_url):
+    """Mocks the databases create cluster operation."""
+
+    expected = {
+                "database": {
+                        "id": "9cc10173-e9ea-4176-9dbc-a4cee4c4ff30",
+                        "name": "backend",
+                        "engine": "pg",
+                        "version": "14",
+                        "semantic_version": "14.5",
+                        "connection": {
+                            "uri": "postgres://doadmin:wv78n3zpz42xezdk@backend-do-user-19081923-0.db.ondigitalocean.com:25060/defaultdb?sslmode=require",
+                            "database": "",
+                            "host": "backend-do-user-19081923-0.db.ondigitalocean.com",
+                            "port": 25060,
+                            "user": "doadmin",
+                            "password": "wv78n3zpz42xezdk",
+                            "ssl": True
+                            },
+                        "private_connection": {
+                            "uri": "postgres://doadmin:wv78n3zpz42xezdk@private-backend-do-user-19081923-0.db.ondigitalocean.com:25060/defaultdb?sslmode=require",
+                            "database": "",
+                            "host": "private-backend-do-user-19081923-0.db.ondigitalocean.com",
+                            "port": 25060,
+                            "user": "doadmin",
+                            "password": "wv78n3zpz42xezdk",
+                            "ssl": True
+                        },
+                        "users": [
+                        {
+                            "name": "doadmin",
+                            "role": "primary",
+                            "password": "wv78n3zpz42xezdk"
+                        }
+                        ],
+                        "db_names": [
+                        "defaultdb"
+                        ],
+                        "num_nodes": 2,
+                        "region": "nyc3",
+                        "status": "creating",
+                        "created_at": "2019-01-11T18:37:36Z",
+                        "maintenance_window": {
+                        "day": "saturday",
+                        "hour": "08:45:12",
+                        "pending": True,
+                        "description": [
+                                "Update TimescaleDB to version 1.2.1",
+                                "Upgrade to PostgreSQL 11.2 and 10.7 bugfix releases"
+                            ]
+                        },
+                        "size": "db-s-2vcpu-4gb",
+                        "tags": [
+                            "production"
+                            ],
+                        "private_network_uuid": "d455e75d-4858-4eec-8c95-da2f0a5f93a7",
+                        "version_end_of_life": "2023-11-09T00:00:00Z",
+                        "version_end_of_availability": "2023-05-09T00:00:00Z"
+                    }
+                }
+
+    cluster_uuid = "9cc10173-e9ea-4176-9dbc-a4cee4c4ff30"
+
+    responses.add(
+        responses.POST,
+        f"{mock_client_url}/v2/databases",
+        json = expected,
+        status = 201,
+    )
+
+    resp = mock_client.databases.create_cluster(
+        {"name": "backend","engine": "pg","version": "14","region": "nyc3","size": "db-s-2vcpu-4gb","num_nodes": 2,"tags": ["production"]}
+    )
+
+    assert expected == resp
+
+
+
+@responses.activate
+def test_databases_add_user(mock_client: Client , mock_client_url):
+    """Mocks the databases add user operation."""
+
+    expected = {
+                "user": {
+                        "name": "app-01",
+                        "role": "normal",
+                        "password": "jge5lfxtzhx42iff"
+                    }
+                }
+    cluster_uuid = "9cc10173-e9ea-4176-9dbc-a4cee4c4ff30"
+    
+    responses.add(
+        responses.POST,
+        f"{mock_client_url}/v2/databases/{cluster_uuid}/users",
+        json=expected,
+        status=201
+    )
+
+    resp = mock_client.databases.add_user(
+        cluster_uuid,
+        {"name": "app-01"}
+    )
+
+    assert expected == resp
+
+
 @responses.activate
 def test_databases_update_major_version(mock_client: Client, mock_client_url):
     """Mocks the databases update major version."""
@@ -48,6 +220,54 @@ def test_databases_update_major_version(mock_client: Client, mock_client_url):
     assert resp is None
 
 
+@responses.activate
+def test_databases_create_replica(mock_client: Client , mock_client_url):
+    """Mocks the databases create replica operation."""
+    
+    expected = {
+                "replica": {
+                            "name": "read-nyc3-01",
+                            "connection": {
+                                "uri": "",
+                                "database": "defaultdb",
+                                "host": "read-nyc3-01-do-user-19081923-0.db.ondigitalocean.com",
+                                "port": 25060,
+                                "user": "doadmin",
+                                "password": "wv78n3zpz42xezdk",
+                                "ssl": True
+                            },
+                            "private_connection": {
+                                "uri": "postgres://doadmin:wv78n3zpz42xezdk@private-read-nyc3-01-do-user-19081923-0.db.ondigitalocean.com:25060/defaultdb?sslmode=require",
+                                "database": "",
+                                "host": "private-read-nyc3-01-do-user-19081923-0.db.ondigitalocean.com",
+                                "port": 25060,
+                                "user": "doadmin",
+                                "password": "wv78n3zpz42xezdk",
+                                "ssl": True
+                            },
+                            "region": "nyc3",
+                            "status": "online",
+                            "created_at": "2019-01-11T18:37:36Z"
+                        }
+                    }
+
+    cluster_uuid = "9cc10173-e9ea-4176-9dbc-a4cee4c4ff30"
+
+    responses.add(
+        responses.POST,
+        f"{mock_client_url}/v2/databases/{cluster_uuid}/replicas",
+        json = expected,
+        status=201, 
+    )
+    
+    resp = mock_client.databases.create_replica(
+        cluster_uuid,
+        {"name": "read-nyc3-01","region": "nyc3","size": "db-s-2vcpu-4gb"}
+    )
+
+    assert expected == resp
+
+
 @responses.activate
 def test_databases_promote_replica(mock_client: Client, mock_client_url):
     """Mocks the databases promote replica to primary cluster function."""