test: cover app and playback controller mixin behavior

tests/app/test_app_progress_mixin_behavior.py

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+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import cast
+
+from auditui.app.progress import AppProgressMixin
+from textual.events import Key
+from textual.widgets import DataTable
+
+
+@dataclass(slots=True)
+class FakeKeyEvent:
+    """Minimal key event carrying key value and prevent_default state."""
+
+    key: str
+    prevented: bool = False
+
+    def prevent_default(self) -> None:
+        """Mark event as prevented."""
+        self.prevented = True
+
+
+@dataclass(slots=True)
+class FakeStatic:
+    """Minimal static widget with text and visibility fields."""
+
+    display: bool = False
+    text: str = ""
+
+    def update(self, value: str) -> None:
+        """Store rendered text value."""
+        self.text = value
+
+
+@dataclass(slots=True)
+class FakeProgressBar:
+    """Minimal progress bar widget storing latest progress value."""
+
+    progress: float = 0.0
+
+    def update(self, progress: float) -> None:
+        """Store progress value for assertions."""
+        self.progress = progress
+
+
+@dataclass(slots=True)
+class FakeContainer:
+    """Minimal container exposing display property."""
+
+    display: bool = False
+
+
+class DummyPlayback:
+    """Playback shim exposing only members used by AppProgressMixin."""
+
+    def __init__(self) -> None:
+        """Initialize playback state and update counters."""
+        self.is_playing = False
+        self._status: str | None = None
+        self._progress: tuple[str, float, float] | None = None
+        self.saved_calls = 0
+
+    def check_status(self):
+        """Return configurable status check message."""
+        return self._status
+
+    def get_current_progress(self):
+        """Return configurable progress tuple."""
+        return self._progress
+
+    def update_position_if_needed(self) -> None:
+        """Record periodic save invocations."""
+        self.saved_calls += 1
+
+
+class DummyProgressApp(AppProgressMixin):
+    """Mixin host that records action dispatch and widget updates."""
+
+    def __init__(self) -> None:
+        """Initialize fake widgets and playback state."""
+        self.playback = DummyPlayback()
+        self.focused = object()
+        self.actions: list[str] = []
+        self.messages: list[str] = []
+        self.progress_info = FakeStatic()
+        self.progress_bar = FakeProgressBar()
+        self.progress_container = FakeContainer()
+
+    def action_seek_backward(self) -> None:
+        """Record backward seek action dispatch."""
+        self.actions.append("seek_backward")
+
+    def action_toggle_playback(self) -> None:
+        """Record toggle playback action dispatch."""
+        self.actions.append("toggle")
+
+    def update_status(self, message: str) -> None:
+        """Capture status messages for assertions."""
+        self.messages.append(message)
+
+    def query_one(self, selector: str, _type: object):
+        """Return fake widgets by selector used by progress mixin."""
+        return {
+            "#progress_info": self.progress_info,
+            "#progress_bar": self.progress_bar,
+            "#progress_bar_container": self.progress_container,
+        }[selector]
+
+
+def test_on_key_dispatches_seek_when_playing() -> None:
+    """Ensure left key is intercepted and dispatched to seek action."""
+    app = DummyProgressApp()
+    app.playback.is_playing = True
+    event = FakeKeyEvent("left")
+    app.on_key(cast(Key, event))
+    assert event.prevented is True
+    assert app.actions == ["seek_backward"]
+
+
+def test_on_key_dispatches_space_when_table_focused() -> None:
+    """Ensure space is intercepted and dispatched when table is focused."""
+    app = DummyProgressApp()
+    app.focused = DataTable()
+    event = FakeKeyEvent("space")
+    app.on_key(cast(Key, event))
+    assert event.prevented is True
+    assert app.actions == ["toggle"]
+
+
+def test_check_playback_status_hides_progress_after_message() -> None:
+    """Ensure playback status message triggers hide-progress behavior."""
+    app = DummyProgressApp()
+    app.playback._status = "Finished"
+    app._check_playback_status()
+    assert app.messages[-1] == "Finished"
+    assert app.progress_info.display is False
+    assert app.progress_container.display is False
+
+
+def test_update_progress_renders_visible_progress_row() -> None:
+    """Ensure valid progress data updates widgets and makes them visible."""
+    app = DummyProgressApp()
+    app.playback.is_playing = True
+    app.playback._progress = ("Chapter", 30.0, 60.0)
+    app._update_progress()
+    assert app.progress_bar.progress == 50.0
+    assert app.progress_info.display is True
+    assert app.progress_container.display is True