"""Tests for cht.ui.timeline — Timeline state machine."""

import pytest
from unittest.mock import MagicMock

# Skip GTK import for headless testing
import sys
from unittest.mock import MagicMock as _MM

# Mock gi modules for headless testing
gi_mock = _MM()
gi_mock.require_version = _MM()
gtk_mock = _MM()
gobject_mock = _MM()

# GObject.Object needs __gsignals__ support
class FakeGObject:
    def __init__(self):
        self._signals = {}
    def emit(self, signal, *args):
        for cb in self._signals.get(signal, []):
            cb(self, *args)
    def connect(self, signal, cb):
        self._signals.setdefault(signal, []).append(cb)

# We test the logic, not the GTK widgets
# Import after mocking would be complex, so test the state logic directly


try:
    from cht.ui.timeline import State
    HAS_GI = True
except ImportError:
    HAS_GI = False


@pytest.mark.skipif(not HAS_GI, reason="GTK/gi not available")
class TestTimelineState:
    def test_initial_state(self):
        assert State.WAITING.name == "WAITING"
        assert State.LIVE.name == "LIVE"
        assert State.PLAYING.name == "PLAYING"
        assert State.PAUSED.name == "PAUSED"

    def test_state_values_are_unique(self):
        values = [s.value for s in State]
        assert len(values) == len(set(values))