"""Tests for data structure inference (flat table, pivot table, etc.)."""

import pytest


class TestDataStructureInference:
    """Placeholder tests for data structure detection."""

    def test_flat_table_detected(self):
        """A simple header + rows structure should be detected as flat table."""
        # TODO: implement once domain logic exists
        pass

    def test_pivot_table_detected(self):
        """A cross-tab structure should be detected as pivot table."""
        pass

    def test_single_column_detected(self):
        """A single-column dataset should be flagged appropriately."""
        pass