Create the test for the database class

tests/test_database.py

@@ -0,0 +1,40 @@
+import pytest
+from unittest.mock import Mock  # A ferramenta para criar nosso "dublê"
+from pathlib import Path
+from sqlalchemy import inspect, Column, Integer, String
+from sqlalchemy.orm import Session
+
+from src.pilgrim.database import Database,Base
+
+class MockUser(Base):
+    __tablename__ = 'mock_users'
+    id = Column(Integer, primary_key=True)
+    name = Column(String)
+
+@pytest.fixture
+def db_instance(tmp_path: Path):
+    fake_db_path = tmp_path / "test_pilgrim.db"
+    mock_config_manager = Mock()
+    mock_config_manager.database_url = str(fake_db_path)
+    db = Database(mock_config_manager)
+    return db, fake_db_path
+
+def test_create_database(db_instance):
+    db, fake_db_path = db_instance
+    db.create()
+    assert fake_db_path.exists()
+
+def test_table_creation(db_instance):
+    db, _ = db_instance
+    db.create()
+    inspector = inspect(db.engine)
+    assert "mock_users" in inspector.get_table_names()
+
+def test_session_returned_corectly(db_instance):
+    db, _ = db_instance
+    session = db.session()
+    assert isinstance(session, Session)
+    session.close()
+
+
+