test(header): assert every catalogue follows the palette gradient

tests/test_bassdrive.py

@@ -255,7 +255,9 @@ def test_provider_describes_its_catalogue() -> None:
     assert provider.has_schedule is True
     assert provider.bandcamp is False
     assert len(provider.hero) == 3
-    assert "bright_cyan" in "".join(provider.hero)
+    # the header paints the wordmark with the palette gradient
+    assert provider.hero_gradient is True
+    assert "[" not in "".join(provider.hero)
     assert provider.hero_lines == (
         "BASSDRIVE",
         "WORLDWIDE DRUM & BASS",

tests/test_header.py

@@ -6,6 +6,7 @@ import types
 import pytest
 from rich.cells import cell_len
 
+from beefy_player.palettes import DEFAULT_PALETTE, PALETTES
 from beefy_player.providers import PROVIDERS
 from beefy_player.providers.somafm import SomaFMProvider
 from beefy_player.providers.wordmark import render
@@ -71,6 +72,17 @@ def hero_styles(provider) -> list[str]:
     ]
 
 
+def hero_colours(provider) -> set[str]:
+    """Palette names the header actually painted the hero glyphs with."""
+    palette = set(PALETTES[DEFAULT_PALETTE])
+    return {
+        colour
+        for style in hero_styles(provider)
+        for colour in palette
+        if style.endswith(f" {colour}")
+    }
+
+
 def test_the_i_and_t_have_thin_stems() -> None:
     """Two-pixel stems make an I look like an H and a T look like a block."""
     assert render("I") == ("▀█▀", " █", "▄█▄")
@@ -108,27 +120,38 @@ def test_every_catalogue_has_a_three_row_wordmark() -> None:
         assert provider.hero_lines, slug
 
 
-def test_tilderadio_spells_its_own_name_in_the_default_colour() -> None:
+def test_tilderadio_spells_its_own_name_in_the_palette_gradient() -> None:
     provider = PROVIDERS["tilderadio"]
     lines = render_header(143, height=len(provider.hero), provider=provider)
     assert len(lines) == 3
     assert "TILDERADIO" in lines[0]  # the wordmark
     assert "STREAMED BY / FOR USERS OF THE" in lines[1]
     assert "TILDEVERSE" in lines[2]
-    # no colour of its own: the art inherits the terminal foreground
+    # the art carries no colours; the header itself paints the gradient
     assert all("[" not in row for row in provider.hero)
-    assert not {"bright_cyan", "cyan"} & set(hero_styles(provider))
+    assert provider.hero_gradient
+    assert len(hero_colours(provider)) > 1
     assert all("SOMA" not in line for line in lines)
 
 
-def test_bassdrive_spells_its_name_in_its_own_two_blues() -> None:
+def test_bassdrive_spells_its_name_in_the_palette_gradient() -> None:
     provider = PROVIDERS["bassdrive"]
     lines = render_header(143, height=len(provider.hero), provider=provider)
     assert "BASSDRIVE" in lines[0]
     assert "WORLDWIDE DRUM & BASS" in lines[1]
     assert "LIVE SHOWS 24/7" in lines[2]
-    styles = hero_styles(provider)
-    assert "bright_cyan" in styles and "cyan" in styles
+    assert provider.hero_gradient
+    assert len(hero_colours(provider)) > 1
+    # no stale markup leaks into the painted rows
+    assert all("[" not in line for line in lines)
+
+
+@pytest.mark.parametrize("slug", sorted(PROVIDERS))
+def test_every_catalogue_paints_its_wordmark_with_the_palette(slug: str) -> None:
+    """Every hero follows the active palette, not a colour of its own."""
+    provider = PROVIDERS[slug]
+    assert provider.hero_gradient, slug
+    assert len(hero_colours(provider)) > 1, slug
 
 
 def _fake(provider):

tests/test_providers.py

@@ -154,7 +154,7 @@ def test_tilderadio_replaces_the_station_list_with_a_schedule() -> None:
     provider = TilderadioProvider()
     assert provider.has_schedule is True
     # the SomaFM wordmark's slot now holds tilderadio's own art and motto
-    assert provider.hero and not provider.hero_gradient
+    assert provider.hero and provider.hero_gradient
     assert provider.hero_lines == (
         "TILDERADIO",
         "STREAMED BY / FOR USERS OF THE",