mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-23 20:29:06 -05:00
231 lines
11 KiB
Python
231 lines
11 KiB
Python
"""Round 2 theme: the stylesheet fixes of package 1, read from its source.
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Each test fails on the stylesheet as it was before the fix: a red focus ring
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and hover, Starlight's 35 px h2, tinted disclosure blocks, striped asides,
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the search result file dump, lifting shadows, a sidebar without hierarchy,
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two indigos, permalinks hidden on touch screens, OS tabs cut at 320 px, a
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column that moves on pages without a TOC.
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"""
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from __future__ import annotations
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import re
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import unittest
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from pathlib import Path
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ROOT = Path(__file__).resolve().parent.parent
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CSS_PATH = ROOT / "website" / "src" / "styles" / "retrobios.css"
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# Page backgrounds Starlight 0.42.6 draws under our tokens, read with
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# getComputedStyle on a built page (light: white, dark: gray-7 hsl(224 10% 10%)).
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PAGE_BG = {"light": "#ffffff", "dark": "#17181c"}
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# Text Starlight draws on a filled button (--sl-color-black in each theme).
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ON_FILL = {"light": "#ffffff", "dark": "#17181c"}
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def _strip_comments(css: str) -> str:
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return re.sub(r"/\*.*?\*/", "", css, flags=re.S)
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def _blocks(css: str) -> list[tuple[str, str]]:
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"""Innermost (selector, body) pairs, media queries flattened."""
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return [(sel.strip(), body) for sel, body in re.findall(r"([^{}]+)\{([^{}]*)\}", css)]
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def _theme_tokens(css: str, selector: str) -> dict[str, str]:
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for sel, body in _blocks(css):
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if sel == selector:
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return dict(re.findall(r"(--[\w-]+)\s*:\s*([^;]+);", body))
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raise AssertionError(f"no block {selector}")
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def _rules(css: str, selector_part: str) -> list[str]:
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return [body for sel, body in _blocks(css) if selector_part in sel]
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def _luminance(hex_colour: str) -> float:
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value = hex_colour.lstrip("#")
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channels = [int(value[i : i + 2], 16) / 255 for i in (0, 2, 4)]
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linear = [c / 12.92 if c <= 0.03928 else ((c + 0.055) / 1.055) ** 2.4 for c in channels]
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return 0.2126 * linear[0] + 0.7152 * linear[1] + 0.0722 * linear[2]
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def _ratio(a: str, b: str) -> float:
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la, lb = sorted((_luminance(a), _luminance(b)), reverse=True)
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return (la + 0.05) / (lb + 0.05)
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class ThemeStylesheet(unittest.TestCase):
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@classmethod
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def setUpClass(cls) -> None:
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cls.css = _strip_comments(CSS_PATH.read_text(encoding="utf-8"))
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dark = _theme_tokens(cls.css, ":root")
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light = {**dark, **_theme_tokens(cls.css, ":root[data-theme='light']")}
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cls.tokens = {"dark": dark, "light": light}
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def resolve(self, theme: str, token: str) -> str:
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value = self.tokens[theme][token].strip()
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while value.startswith("var("):
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value = self.tokens[theme][value[4:-1].strip()].strip()
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return value
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# 1.1
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def test_focus_ring_is_the_link_colour_not_red(self):
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focus = _rules(self.css, ":focus-visible")
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self.assertTrue(focus)
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for body in focus:
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self.assertIn("2px solid var(--rb-link)", body)
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self.assertNotIn("accent", body.replace("--rb-link", ""))
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ring = next(b for s, b in _blocks(self.css) if s.startswith(":where(a, button"))
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self.assertIn("outline-offset: 2px", ring)
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self.assertNotIn("#b42318", self.css)
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self.assertNotIn("--rb-accent", self.css)
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def test_button_hover_stays_in_its_own_colour(self):
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self.assertNotRegex(self.css, r"\.rb-button:is\(:hover,\s*:focus\)")
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primary = _rules(self.css, ".rb-button-primary:hover")
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self.assertTrue(primary)
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self.assertIn("var(--rb-link-strong)", primary[0])
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self.assertEqual(self.resolve("light", "--rb-link-strong"), "#1d2f73")
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self.assertEqual(self.resolve("dark", "--rb-link-strong"), "#c9d2ff")
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outline = [b for s, b in _blocks(self.css) if s.endswith(".rb-button:hover")]
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self.assertIn("var(--sl-color-accent-low)", outline[0])
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# 1.3
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def test_heading_scale(self):
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root = self.tokens["dark"]
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self.assertEqual(root["--sl-text-h1"], "2.25rem")
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self.assertEqual(root["--sl-text-h2"], "1.5rem")
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self.assertEqual(root["--sl-text-h3"], "1.2rem")
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self.assertEqual(root["--sl-text-h4"], "1rem")
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self.assertRegex(self.css, r"@media \(max-width: 50rem\) \{\s*:root \{ --sl-text-h1: 1\.875rem; \}")
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self.assertRegex(self.css, r"level-h2, h2\) \{ margin-top: 2\.75rem; \}")
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self.assertRegex(self.css, r"level-h3, h3:not\(\.rb-file-title\)\) \{ margin-top: 1\.75rem; \}")
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# 1.2
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def test_asides_are_neutral_boxes(self):
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neutral = _rules(self.css, ".starlight-aside:is(.starlight-aside--note, .starlight-aside--tip)")
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joined = "".join(neutral)
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self.assertIn("--sl-color-asides-border: var(--rb-border)", joined)
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self.assertIn("background: var(--rb-surface)", joined)
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self.assertIn("display: none", joined)
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box = _rules(self.css, ".sl-markdown-content .starlight-aside")[0]
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self.assertIn("border: 1px solid", box)
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# 1.4
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def test_disclosure_blocks_are_neutral(self):
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self.assertNotIn("rb-details-tip", self.css)
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self.assertNotIn("--sl-color-blue", self.css)
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base = next(b for s, b in _blocks(self.css) if s == ".sl-markdown-content details.rb-details")
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self.assertIn("background: transparent", base)
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self.assertIn("var(--rb-border)", base)
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self.assertIn("0.95rem", _rules(self.css, "details.rb-details > summary")[0])
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# 1.5
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def test_search_hides_the_file_list(self):
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self.assertIn("display: none", _rules(self.css, "site-search .pagefind-ui__result-tags")[0])
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# 1.6
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def test_no_lifting_shadow_on_pagination_or_menu(self):
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self.assertIn("box-shadow: none", _rules(self.css, ".pagination-links a")[0])
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self.assertIn("font-size: 1.05rem", _rules(self.css, ".pagination-links .link-title")[0])
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menu = next(b for s, b in _blocks(self.css) if s == ".sl-menu-button")
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self.assertIn("box-shadow: none", menu)
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self.assertIn("background: transparent", menu)
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self.assertIn("1px solid var(--rb-border)", menu)
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# 1.7
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def test_sidebar_hierarchy(self):
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label = _rules(self.css, ".top-level summary .large")[0]
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self.assertIn("var(--sl-text-xs)", label)
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self.assertIn("var(--rb-text-secondary)", label)
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current = _rules(self.css, "a[aria-current='page']")[0]
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self.assertIn("background: var(--sl-color-accent-low)", current)
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self.assertIn("color: var(--sl-color-accent-high)", current)
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self.assertNotIn("border", current)
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# 1.8
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def test_one_indigo(self):
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for theme in ("light", "dark"):
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with self.subTest(theme=theme):
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self.assertEqual(self.resolve(theme, "--sl-color-accent"), self.resolve(theme, "--rb-link"))
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self.assertEqual(self.resolve(theme, "--sl-color-text-accent"), self.resolve(theme, "--rb-link"))
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# 1.9
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def test_permalinks_visible_without_hover(self):
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self.assertRegex(self.css, r"@media \(hover: none\) \{\s*\.rb-permalink \{ opacity: 1; \}")
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permalink = next(b for s, b in _blocks(self.css) if s == ".rb-permalink")
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self.assertIn("min-height: 24px", permalink)
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# 1.10
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def test_os_tabs_wrap(self):
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self.assertIn("flex-wrap: wrap", _rules(self.css, "starlight-tabs [role='tablist']")[0])
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self.assertIn("white-space: nowrap", _rules(self.css, "starlight-tabs [role='tab']")[0])
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# 1.11
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def test_page_without_toc_keeps_the_column(self):
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self.assertIn("--__toc-width: initial", _rules(self.css, ":root[data-has-sidebar]:not([data-has-toc])")[0])
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pane = _rules(self.css, ":not([data-has-toc]) .main-pane")[0]
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self.assertIn("--sl-content-margin-inline: auto 0", pane)
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# 1.12, 1.14
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def test_card_pages(self):
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cards = next(b for s, b in _blocks(self.css) if s == ".sl-markdown-content :is(.rb-sys-file, .rb-file-entry)")
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self.assertIn("content-visibility: auto", cards)
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self.assertIn("contain-intrinsic-size: auto 320px", cards)
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self.assertIn("--sl-content-width: 54rem", _rules(self.css, "body:has(.rb-sys-file, .rb-file-entry)")[0])
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facts = _rules(self.css, "dl.rb-facts")[0]
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self.assertIn("grid-template-columns: 9rem minmax(0, 1fr)", facts)
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self.assertRegex(self.css, r"@media \(max-width: 30rem\) \{\s*\.sl-markdown-content dl\.rb-facts \{ grid-template-columns: minmax\(0, 1fr\)")
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# 1.13
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def test_long_values_wrap_between_words(self):
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table = _rules(self.css, ".rb-meta-card table")[0]
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self.assertIn("table-layout: fixed", table)
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self.assertIn("display: table", table)
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self.assertNotRegex(self.css, r"\.rb-meta-card td \{ overflow-wrap: anywhere")
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self.assertIn("overflow-wrap: anywhere", _rules(self.css, ".rb-meta-card td code")[0])
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self.assertIn("width: 40%", "".join(_rules(self.css, ".rb-meta-card td:first-child")))
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upstream = _rules(self.css, "#by-upstream-emulator")[0]
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self.assertIn("max-width: 22rem", upstream)
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# 1.15
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def test_two_column_tables_stack_label_over_value(self):
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self.assertIn("content: none", _rules(self.css, "table[data-rb-stack='kv'] td::before")[0])
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self.assertTrue(_rules(self.css, "table[data-rb-stack='kv'] td:first-child"))
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def test_contrast_meets_wcag_aa_in_both_themes(self):
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for theme in ("light", "dark"):
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bg = PAGE_BG[theme]
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pairs = [
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("link", self.resolve(theme, "--rb-link"), bg, 4.5),
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("focus ring", self.resolve(theme, "--rb-link"), bg, 3.0),
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("primary button", ON_FILL[theme], self.resolve(theme, "--rb-link"), 4.5),
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("primary hover", ON_FILL[theme], self.resolve(theme, "--rb-link-strong"), 4.5),
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("outline hover", self.resolve(theme, "--rb-link"), self.resolve(theme, "--sl-color-accent-low"), 4.5),
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("sidebar current", self.resolve(theme, "--sl-color-accent-high"), self.resolve(theme, "--sl-color-accent-low"), 4.5),
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("secondary text", self.resolve(theme, "--rb-text-secondary"), bg, 4.5),
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("link on surface", self.resolve(theme, "--rb-link"), self.resolve(theme, "--rb-surface"), 4.5),
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]
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for label, fg, back, need in pairs:
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with self.subTest(theme=theme, pair=label):
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self.assertGreaterEqual(_ratio(fg, back), need, f"{fg} on {back}")
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if __name__ == "__main__":
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unittest.main()
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class DeviceTilesAndHeaderLogo(unittest.TestCase):
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"""The device tiles had no style once merged: every line underlined and one
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tall block per setup on a phone. The header logo was sized from the whole
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header, tab row included, and grew to 84 px."""
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def test_a_tile_is_one_compact_link(self):
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css = CSS_PATH.read_text(encoding="utf-8")
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self.assertRegex(css, r"a\.rb-tile \{[^}]*grid-template-columns: 40px 1fr")
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self.assertRegex(css, r"a\.rb-tile \{[^}]*text-decoration: none")
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def test_the_header_logo_follows_the_top_bar(self):
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css = CSS_PATH.read_text(encoding="utf-8")
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self.assertIn("header .site-title img { height: calc(4rem - 2 * var(--sl-nav-pad-y))", css)
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