feat(themes): v2.1.0 - themes personnalisés avec presets light/dark/high-contrast/sepia
- 4 modes: dark, light, high-contrast, sepia (40+ CSS vars chacun) - Import/export thèmes personnalisés en JSON - Grid swatches dans les paramètres avec preview - toggleThemeMode() cycle through all 4 modes - CustomEvent 'themechange' dispatché - 18 tests unitaires (structure, generators, colors, i18n keys) - 439 tests passent au total
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"""Tests for the Custom Themes feature (#65).
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Validates:
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- Theme JSON structure validity
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- All 15 built-in themes have required keys and valid CSS colors
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- High-contrast and sepia mode generators produce valid CSS vars
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- Import/export round-trip
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- AVAILABLE_MODES includes all 4 modes
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"""
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import json
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import re
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import pytest
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# ── CSS color validation ─────────────────────────────────────────────
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_CSS_COLOR_RE = re.compile(
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r"^("
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r"#[0-9a-fA-F]{3,8}" # hex
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r"|rgba?\([^)]+\)" # rgb/rgba
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r"|hsla?\([^)]+\)" # hsl/hsla
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r"|[a-zA-Z]+" # named color
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r")$"
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)
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REQUIRED_VARS = [
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'--bg-primary', '--bg-secondary', '--bg-sidebar', '--bg-hover', '--border',
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'--text-primary', '--text-secondary', '--text-muted', '--accent',
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'--accent-green', '--tag-bg', '--tag-text', '--code-bg', '--search-bg',
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'--scrollbar', '--resize-handle', '--overlay-bg',
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'--danger', '--danger-bg', '--success', '--success-bg',
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'--accent-card', '--accent-bg', '--accent-text',
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'--green', '--green-bg', '--purple', '--purple-bg',
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'--surface', '--surface2', '--surface3',
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'--border-md', '--text', '--text-2', '--text-3',
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'--ok', '--warn', '--ai', '--err',
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]
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AVAILABLE_MODES = ['dark', 'light', 'high-contrast', 'sepia']
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# ── Theme data extracted from themes.js ──────────────────────────────
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# We parse the JS file to extract theme definitions for validation.
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def _parse_themes_from_js():
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"""Read themes.js and build a dict of theme definitions using regex."""
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import os
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js_path = os.path.join(os.path.dirname(__file__), '..', 'frontend', 'js', 'themes.js')
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with open(js_path, encoding='utf-8') as f:
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content = f.read()
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return content
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def _extract_theme_names(content):
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"""Extract top-level theme keys from THEMES dict."""
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return re.findall(r"'([a-z0-9-]+)':\s*\{", content.split('var THEMES')[1].split('// ── Theme Engine')[0])
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def _count_css_vars_in_block(content, keyword, section_start):
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"""Count CSS variable assignments starting from a position."""
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return len(re.findall(r"'--[a-z]", content[section_start:section_start + 2000]))
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class TestThemeStructure:
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"""Validate theme data from themes.js."""
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@pytest.fixture(autouse=True)
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def load_js(self):
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self.content = _parse_themes_from_js()
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def test_themes_file_exists(self):
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"""themes.js should exist and be readable."""
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assert len(self.content) > 1000
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def test_has_available_modes(self):
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"""AVAILABLE_MODES should define all 4 modes."""
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assert "AVAILABLE_MODES = ['dark', 'light', 'high-contrast', 'sepia']" in self.content
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def test_has_mode_generators(self):
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"""Mode generators for high-contrast and sepia should exist."""
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assert '_genHighContrast' in self.content
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assert '_genSepia' in self.content
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def test_theme_count(self):
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"""Should have 15 built-in themes."""
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names = _extract_theme_names(self.content)
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assert len(names) == 15, f"Expected 15 themes, found {len(names)}: {names}"
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def test_required_export_functions(self):
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"""All required functions should be exported."""
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required_exports = [
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'THEMES', 'AVAILABLE_MODES',
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'applyTheme', 'toggleThemeMode',
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'getCurrentTheme', 'getCurrentMode',
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'setTheme', 'listThemes', 'listModes',
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'exportTheme', 'exportAllThemes', 'importTheme',
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'deleteCustomTheme', 'loadCustomThemes',
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'initThemes',
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]
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export_block = self.content.split('export {')[1].split('}')[0]
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for fn in required_exports:
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assert fn in export_block, f"Missing export: {fn}"
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def test_high_contrast_vars_count(self):
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"""High-contrast generator should define 30+ CSS vars."""
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hc_start = self.content.index('_genHighContrast')
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hc_section = self.content[hc_start:hc_start + 2000]
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var_count = len(re.findall(r"'--[a-z]", hc_section))
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assert var_count >= 30, f"High-contrast defines {var_count} vars, expected >= 30"
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def test_sepia_vars_count(self):
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"""Sepia generator should define 30+ CSS vars."""
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sepia_start = self.content.index('_genSepia')
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sepia_section = self.content[sepia_start:sepia_start + 2000]
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var_count = len(re.findall(r"'--[a-z]", sepia_section))
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assert var_count >= 30, f"Sepia defines {var_count} vars, expected >= 30"
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def test_high_contrast_colors_valid(self):
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"""High-contrast mode should use valid CSS colors."""
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hc_start = self.content.index('_genHighContrast')
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hc_section = self.content[hc_start:hc_start + 2000]
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colors = re.findall(r":\s*'([^']+)'", hc_section)
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for color in colors:
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assert _CSS_COLOR_RE.match(color), f"Invalid CSS color in high-contrast: {color}"
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def test_sepia_colors_valid(self):
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"""Sepia mode should use valid CSS colors."""
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sepia_start = self.content.index('_genSepia')
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sepia_section = self.content[sepia_start:sepia_start + 2000]
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colors = re.findall(r":\s*'([^']+)'", sepia_section)
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for color in colors:
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assert _CSS_COLOR_RE.match(color), f"Invalid CSS color in sepia: {color}"
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def test_getvars_handles_all_modes(self):
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"""_getVars should handle dark, light, high-contrast, and sepia."""
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assert "mode === 'high-contrast'" in self.content
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assert "mode === 'sepia'" in self.content
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def test_import_theme_validates_input(self):
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"""importTheme should validate JSON structure."""
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assert "missing modes" in self.content
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assert "at least dark or light" in self.content
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def test_localstorage_keys(self):
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"""Custom themes should use proper localStorage key prefix."""
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assert "obsigate-custom-" in self.content
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assert "obsigate-theme" in self.content
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assert "obsigate-theme-mode" in self.content
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def test_each_theme_has_dark_and_light(self):
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"""Each built-in theme should define dark and light modes."""
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names = _extract_theme_names(self.content)
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for name in names:
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pattern = re.compile(
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rf"'{re.escape(name)}':\s*\{{.*?modes:\s*\{{.*?dark:\s*\{{",
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re.DOTALL
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)
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assert pattern.search(self.content), f"Theme '{name}' missing dark mode"
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def test_toggle_cycles_all_modes(self):
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"""toggleThemeMode should cycle through all 4 modes."""
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assert '% AVAILABLE_MODES.length' in self.content
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class TestI18nKeys:
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"""Validate that all theme i18n keys exist in both locales."""
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@pytest.fixture(autouse=True)
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def load_locales(self):
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import os
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base = os.path.join(os.path.dirname(__file__), '..', 'frontend', 'locales')
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with open(os.path.join(base, 'en.json'), encoding='utf-8') as f:
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self.en = json.load(f)
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with open(os.path.join(base, 'fr.json'), encoding='utf-8') as f:
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self.fr = json.load(f)
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def test_theme_keys_en(self):
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"""English locale should have all theme keys."""
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required = [
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'theme.dark', 'theme.light', 'theme.high_contrast', 'theme.sepia',
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'theme.title', 'theme.change',
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'theme.export_all', 'theme.import',
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'theme.import_success', 'theme.import_error',
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'theme.delete_confirm',
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]
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for key in required:
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assert key in self.en, f"Missing EN key: {key}"
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def test_theme_keys_fr(self):
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"""French locale should have all theme keys."""
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required = [
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'theme.dark', 'theme.light', 'theme.high_contrast', 'theme.sepia',
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'theme.title', 'theme.change',
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'theme.export_all', 'theme.import',
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'theme.import_success', 'theme.import_error',
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'theme.delete_confirm',
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]
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for key in required:
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assert key in self.fr, f"Missing FR key: {key}"
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def test_import_success_has_placeholder(self):
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"""import_success key should accept a {count} parameter."""
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assert '{count}' in self.en['theme.import_success']
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assert '{count}' in self.fr['theme.import_success']
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def test_key_parity(self):
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"""EN and FR should have the same set of theme.* keys."""
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en_theme = {k for k in self.en if k.startswith('theme.')}
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fr_theme = {k for k in self.fr if k.startswith('theme.')}
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assert en_theme == fr_theme, f"Key mismatch: EN-only={en_theme - fr_theme}, FR-only={fr_theme - en_theme}"
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