bug处理

web/src/hooks/useScrollMemory.test.ts

@@ -1,4 +1,4 @@
-import { shouldRememberScroll } from './useScrollMemory.ts'
+import { shouldPersistScrollSample, shouldRememberScroll } from './useScrollMemory.ts'
 
 function check(name: string, condition: boolean) {
   if (!condition) throw new Error(`useScrollMemory: ${name}`)
@@ -11,4 +11,41 @@ check('media detail remembers scroll', shouldRememberScroll('/media/media-1'))
 check('settings does not remember scroll', !shouldRememberScroll('/settings'))
 check('player does not remember scroll', !shouldRememberScroll('/play/media-1'))
 
+check(
+  'route transition collapse is ignored',
+  !shouldPersistScrollSample({
+    current: 0,
+    lastSaved: 1800,
+    height: 400,
+    lastHeight: 4200,
+  }),
+)
+check(
+  'intentional scroll to top is persisted',
+  shouldPersistScrollSample({
+    current: 0,
+    lastSaved: 1800,
+    height: 4200,
+    lastHeight: 4200,
+  }),
+)
+check(
+  'normal downward scroll is persisted',
+  shouldPersistScrollSample({
+    current: 1900,
+    lastSaved: 1800,
+    height: 4200,
+    lastHeight: 4200,
+  }),
+)
+check(
+  'content growth still allows persist',
+  shouldPersistScrollSample({
+    current: 1800,
+    lastSaved: 1800,
+    height: 5200,
+    lastHeight: 4200,
+  }),
+)
+
 console.log('useScrollMemory.test.ts ok')