test: add test suite for player, api and widgets

tests/test_theme.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+import re
+from pathlib import Path
+
+import pytest
+
+from somafm_tui.app import SomaFMApp
+from somafm_tui.widgets.header import HeaderBar
+from somafm_tui.widgets.search import SearchInput
+from somafm_tui.widgets.spectrum import SpectrumPanel
+from somafm_tui.widgets.stage import StagePanel
+from somafm_tui.widgets.station_list import StationList
+from somafm_tui.widgets.status import StatusBar
+
+PACKAGE = Path(__file__).resolve().parents[1] / "somafm_tui"
+
+
+def test_no_rgb_colors_in_source() -> None:
+    """The app must follow the terminal palette, not force its own RGB colours."""
+    pattern = re.compile(r"#[0-9a-fA-F]{6}")
+    offenders = [
+        str(path.relative_to(PACKAGE))
+        for path in PACKAGE.rglob("*")
+        if path.suffix in {".py", ".tcss"} and pattern.search(path.read_text())
+    ]
+    assert not offenders, offenders
+
+
+@pytest.mark.asyncio
+async def test_backgrounds_use_terminal_default_and_borders_are_ansi() -> None:
+    app = SomaFMApp(autoplay=False, offline=True, audio=False)
+    async with app.run_test(size=(100, 30)) as pilot:
+        await pilot.pause()
+
+        assert app.theme == "terminal"
+        assert app.ansi_color is True
+        assert app.native_ansi_color is True
+        assert app.screen.styles.background.ansi == -1  # SGR 49, terminal default
+        assert app.screen.styles.color.ansi == -1
+        for widget_type in (
+            HeaderBar,
+            SearchInput,
+            StationList,
+            StagePanel,
+            SpectrumPanel,
+            StatusBar,
+        ):
+            widget = app.query_one(widget_type)
+            assert widget.styles.background.ansi == -1, widget_type
+            assert widget.styles.color.ansi == -1, widget_type
+
+        border = app.query_one(StationList).styles.border.top
+        assert border[1].ansi is not None  # an ANSI palette index, not RGB
+
+        await pilot.press("slash")
+        await pilot.pause()
+        search = app.query_one(SearchInput)
+        assert search.styles.background.ansi == -1
+        assert search.styles.background_tint.a == 0
+        assert search.styles.color.ansi == -1  # ansi_default
+        await pilot.press("escape")
+        await pilot.pause()
+
+        await pilot.press("question_mark")
+        await pilot.pause()
+        assert app.screen.styles.background.ansi == -1
+        assert app.screen.query_one("#help").styles.background.ansi == -1
+        await pilot.press("x")
+        await pilot.pause()