Rename embedchain to mem0 and open sourcing code for long term memory (#1474)

Co-authored-by: Deshraj Yadav <deshrajdry@gmail.com>

embedchain/tests/loaders/test_postgres.py

@@ -0,0 +1,60 @@
+from unittest.mock import MagicMock
+
+import psycopg
+import pytest
+
+from embedchain.loaders.postgres import PostgresLoader
+
+
+@pytest.fixture
+def postgres_loader(mocker):
+    with mocker.patch.object(psycopg, "connect"):
+        config = {"url": "postgres://user:password@localhost:5432/database"}
+        loader = PostgresLoader(config=config)
+        yield loader
+
+
+def test_postgres_loader_initialization(postgres_loader):
+    assert postgres_loader.connection is not None
+    assert postgres_loader.cursor is not None
+
+
+def test_postgres_loader_invalid_config():
+    with pytest.raises(ValueError, match="Must provide the valid config. Received: None"):
+        PostgresLoader(config=None)
+
+
+def test_load_data(postgres_loader, monkeypatch):
+    mock_cursor = MagicMock()
+    monkeypatch.setattr(postgres_loader, "cursor", mock_cursor)
+
+    query = "SELECT * FROM table"
+    mock_cursor.fetchall.return_value = [(1, "data1"), (2, "data2")]
+
+    result = postgres_loader.load_data(query)
+
+    assert "doc_id" in result
+    assert "data" in result
+    assert len(result["data"]) == 2
+    assert result["data"][0]["meta_data"]["url"] == query
+    assert result["data"][1]["meta_data"]["url"] == query
+    assert mock_cursor.execute.called_with(query)
+
+
+def test_load_data_exception(postgres_loader, monkeypatch):
+    mock_cursor = MagicMock()
+    monkeypatch.setattr(postgres_loader, "cursor", mock_cursor)
+
+    _ = "SELECT * FROM table"
+    mock_cursor.execute.side_effect = Exception("Mocked exception")
+
+    with pytest.raises(
+        ValueError, match=r"Failed to load data using query=SELECT \* FROM table with: Mocked exception"
+    ):
+        postgres_loader.load_data("SELECT * FROM table")
+
+
+def test_close_connection(postgres_loader):
+    postgres_loader.close_connection()
+    assert postgres_loader.cursor is None
+    assert postgres_loader.connection is None