"""Template for testing a custom Textual widget.

Copy this template to tests/widgets/ and customize for your widget.
"""

import pytest
from textual.app import App

# Import your widget
# from styrene.widgets.my_widget import MyWidget


class TestMyWidget:
    """Test suite for MyWidget."""

    @pytest.mark.asyncio
    async def test_widget_mounts(self):
        """Verify widget mounts without errors."""

        class TestApp(App):
            def compose(self):
                # TODO: Yield your widget
                # yield MyWidget()
                pass

        app = TestApp()
        async with app.run_test() as pilot:
            # Verify widget exists
            # widget = app.query_one(MyWidget)
            # assert widget is not None
            pass

    @pytest.mark.asyncio
    async def test_widget_initial_state(self):
        """Verify widget initializes with correct default state."""

        class TestApp(App):
            def compose(self):
                # TODO: Yield your widget
                pass

        app = TestApp()
        async with app.run_test() as pilot:
            # TODO: Verify initial state
            # widget = app.query_one(MyWidget)
            # assert widget.some_property == expected_value
            pass

    @pytest.mark.asyncio
    async def test_widget_reactivity(self):
        """Test widget reacts to data changes."""

        class TestApp(App):
            def compose(self):
                # TODO: Yield your widget
                pass

        app = TestApp()
        async with app.run_test() as pilot:
            # TODO: Change reactive property
            # widget = app.query_one(MyWidget)
            # widget.reactive_property = new_value
            # await pilot.pause()

            # Verify widget updated
            # assert widget rendered correctly
            pass

    @pytest.mark.asyncio
    async def test_widget_composition(self):
        """Verify widget composes child widgets correctly."""

        class TestApp(App):
            def compose(self):
                # TODO: Yield your widget
                pass

        app = TestApp()
        async with app.run_test() as pilot:
            # TODO: Verify child widgets exist
            # widget = app.query_one(MyWidget)
            # assert widget.query_one("#child-widget-id")
            pass

    @pytest.mark.asyncio
    async def test_widget_methods(self):
        """Test public widget methods."""

        class TestApp(App):
            def compose(self):
                # TODO: Yield your widget
                pass

        app = TestApp()
        async with app.run_test() as pilot:
            # TODO: Call widget methods
            # widget = app.query_one(MyWidget)
            # result = widget.some_method()
            # assert result == expected
            pass

    @pytest.mark.asyncio
    async def test_widget_events(self):
        """Test widget handles events correctly."""

        class TestApp(App):
            def compose(self):
                # TODO: Yield your widget
                pass

        app = TestApp()
        async with app.run_test() as pilot:
            # TODO: Trigger events
            # await pilot.click("#button-in-widget")
            # Verify event handler executed
            pass

    @pytest.mark.asyncio
    async def test_widget_styling(self):
        """Verify widget applies styles correctly."""

        class TestApp(App):
            CSS = """
            MyWidget {
                background: red;
            }
            """

            def compose(self):
                # TODO: Yield your widget
                pass

        app = TestApp()
        async with app.run_test() as pilot:
            # TODO: Verify styles applied
            # widget = app.query_one(MyWidget)
            # assert widget.styles.background.rgb == (255, 0, 0)
            pass

    def test_widget_default_css_defined(self):
        """Verify widget defines DEFAULT_CSS if needed."""
        # TODO: If widget has DEFAULT_CSS, verify it's valid
        # from styrene.widgets.my_widget import MyWidget
        # assert hasattr(MyWidget, 'DEFAULT_CSS')
        # assert isinstance(MyWidget.DEFAULT_CSS, str)
        pass


# Unit tests for widget helper methods (no Textual app needed)
class TestMyWidgetHelpers:
    """Test widget helper methods in isolation."""

    def test_helper_method(self):
        """Test helper method logic."""
        # TODO: Test pure functions/methods
        # from styrene.widgets.my_widget import helper_function
        # result = helper_function(input)
        # assert result == expected
        pass


# Manual Testing Checklist:
"""
[ ] Widget renders correctly in isolation
[ ] Widget renders correctly within parent screen
[ ] Widget updates when reactive properties change
[ ] Widget responds to user interactions
[ ] Widget handles empty/null data gracefully
[ ] Widget CSS integrates with theme
[ ] Widget is accessible via keyboard
"""
