First Working version. I can add table

tests/conftest.py

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+from io import BytesIO
+
+import pandas as pd
+import pytest
+
+from components.datagrid.DataGrid import reset_instances
+
+USER_EMAIL = "test@mail.com"
+USER_ID = "test_user"
+
+
+@pytest.fixture
+def excel_file_content():
+  # Create a simple Excel file in memory
+  df = pd.DataFrame({
+      'Column 1': ['Aba', 'Johan', 'Kodjo'],
+      'Column 2': ['Female', 'Male', 'Male']
+  })
+  excel_io = BytesIO()
+  df.to_excel(excel_io, index=False)
+  excel_io.seek(0)
+  return excel_io.read()
+
+
+@pytest.fixture
+def excel_file_content_2():
+  # Create a simple Excel file in memory
+  df = pd.DataFrame({
+      'Column 1': ['C', 'A', 'B'],
+      'Column 2': [1, 2, 3]
+  })
+  excel_io = BytesIO()
+  df.to_excel(excel_io, index=False)
+  excel_io.seek(0)
+  return excel_io.read()
+
+
+@pytest.fixture
+def excel_file_content_with_sheet_name():
+  # Create a DataFrame
+  df = pd.DataFrame({
+      'Column 1 ': ['Aba', 'Johan', 'Kodjo'],
+      'Column 2': [False, True, True],
+      'Column 3 ': [10, 20, 30],
+  })
+  
+  # Create an in-memory bytes buffer
+  excel_io = BytesIO()
+  
+  # Write the dataframe to the buffer with a custom sheet name
+  df.to_excel(excel_io, index=False, sheet_name="sheet_name")
+  
+  # Move the pointer to the start of the stream
+  excel_io.seek(0)
+  
+  return excel_io.read()  # Return the binary data
+
+
+@pytest.fixture(autouse=True)
+def reset_datagrid_instances():
+  reset_instances()
+
+
+@pytest.fixture
+def session():
+  return {"user_id": USER_ID, "user_email": USER_EMAIL}