#405

frontend/src/lib/settings.test.ts

@@ -89,8 +89,12 @@ describe ('settings', () => {
   })
 
   it ('derives TopNav colours without mixing mobile active backgrounds', () => {
-    expect (buildThemeTokens ('light', { }).topNavMobileActiveBackground).toBe (
+    const tokens = buildThemeTokens ('light', { })
+
+    expect (tokens.topNavMobileActiveBackground).toBe (
 	LIGHT_THEME_TOKENS.topNavRootBackgroundDesktop)
+    expect (tokens.topNavMobileActiveBackground).not.toBe (
+	tokens.topNavRootBackgroundMobile)
     expect (buildThemeTokens ('dark', { }).topNavMobileActiveBackground).toBe (
 	DARK_THEME_TOKENS.topNavActiveBackground)
   })