Merge pull request #249 from olisaagbafor/fix-245

Test DepositDBConnector

web_app/tests/db/deposit_db_tests.py

@@ -0,0 +1,128 @@
+"""
+Test cases for DepositDBConnector functionality in web_app.
+"""
+
+from unittest.mock import MagicMock
+from decimal import Decimal
+import pytest
+
+from web_app.db.crud import DepositDBConnector
+from web_app.db.models import User, Vault
+
+
+@pytest.fixture
+def deposit_db_connector_fixture(mock_db_connector):
+    """
+    Fixture to provide a mocked DepositDBConnector instance using mock_db_connector.
+    """
+    connector = DepositDBConnector()
+    connector.Session = mock_db_connector.Session
+    connector.get_object_by_field = mock_db_connector.get_object_by_field
+    connector.write_to_db = mock_db_connector.write_to_db
+    return connector
+
+
+@pytest.fixture
+def mock_user_fixture():
+    """
+    Mocked User instance.
+    """
+    return User(id="user123", wallet_id="wallet123")
+
+
+@pytest.fixture
+def mock_vault_fixture():
+    """
+    Mocked Vault instance.
+    """
+    return Vault(id="vault123", user_id="user123", symbol="ETH", amount="100.00")
+
+
+# pylint: disable=too-few-public-methods
+class TestCreateVault:
+    """
+    Tests for creating a vault using DepositDBConnector.
+    """
+
+    def test_create_vault_success(
+        self,
+        deposit_db_connector: DepositDBConnector,
+        mock_user: User,
+        mock_db_connector,
+    ):
+        """
+        Test successful creation of a vault using fixtures.
+        """
+        mock_db_connector.write_to_db = MagicMock()  # Use mock_db_connector's method
+
+        vault = deposit_db_connector.create_vault(
+            user=mock_user,
+            symbol="BTC",
+            amount="50.00",
+        )
+
+        assert vault.symbol == "BTC"
+        assert vault.amount == "50.00"
+        assert vault.user_id == mock_user.id
+        mock_db_connector.write_to_db.assert_called_once_with(vault)
+
+    def test_create_vault_failure_invalid_user(
+        self,
+        deposit_db_connector: DepositDBConnector,
+    ):
+        """
+        Test failure when creating a vault with an invalid user.
+        """
+        with pytest.raises(ValueError, match="Invalid user provided"):
+            deposit_db_connector.create_vault(
+                user=None,
+                symbol="BTC",
+                amount="50.00",
+            )
+
+
+# pylint: disable=too-few-public-methods
+class TestAddVaultBalance:
+    """
+    Tests for adding to a vault's balance using DepositDBConnector.
+    """
+
+    def test_add_balance_success(
+        self,
+        deposit_db_connector: DepositDBConnector,
+        mock_vault: Vault,
+        mock_db_connector,
+    ):
+        """
+        Test successfully adding to a vault's balance using fixtures.
+        """
+        mock_db_connector.get_object_by_field = MagicMock(return_value=mock_vault)
+        mock_db_connector.Session().query().filter_by().update = MagicMock()
+
+        deposit_db_connector.add_vault_balance(
+            wallet_id="wallet123",
+            symbol="ETH",
+            amount="50.00",
+        )
+
+        updated_amount = Decimal(mock_vault.amount) + Decimal("50.00")
+        mock_db_connector.Session().query().filter_by().update.assert_called_once_with(
+            {"amount": str(updated_amount)}
+        )
+
+    def test_add_balance_failure_vault_not_found(
+        self,
+        deposit_db_connector: DepositDBConnector,
+        mock_db_connector,
+    ):
+        """
+        Test failure when adding to a vault balance that doesn't exist.
+        """
+        mock_db_connector.get_object_by_field = MagicMock(return_value=None)
+
+        with pytest.raises(ValueError, match="Vault not found"):
+            deposit_db_connector.add_vault_balance(
+                wallet_id="invalid_wallet",
+                symbol="ETH",
+                amount="50.00",
+            )