update

test/theme-bg.test.js

@@ -0,0 +1,31 @@
+'use strict';
+const assert = require('node:assert');
+const { themeBgColor } = require('../config');
+
+let passed = 0;
+function check(name, fn) {
+  try { fn(); console.log('  ok -', name); passed++; }
+  catch (e) { console.error('  FAIL -', name, e.message); process.exitCode = 1; }
+}
+
+const expected = {
+  linear:    '#0E0E12',
+  midnight:  '#08090B',
+  carbon:    '#1A1D23',
+  solarized: '#002B36',
+  github:    '#0D1117',
+  light:     '#FAFAFA',
+};
+for (const [theme, bg] of Object.entries(expected)) {
+  check(`themeBgColor('${theme}') === ${bg}`, () => {
+    assert.strictEqual(themeBgColor(theme), bg);
+  });
+}
+
+check('未知 theme 兜底为 light 背景', () => {
+  assert.strictEqual(themeBgColor('unknown'), '#FAFAFA');
+  assert.strictEqual(themeBgColor(''), '#FAFAFA');
+  assert.strictEqual(themeBgColor(null), '#FAFAFA');
+});
+
+console.log(`\n${passed} checks passed`);