From 2d93630304aa88dcefad756fd6ed9cccca696f29 Mon Sep 17 00:00:00 2001
From: Robin Kehl <robin.kehl@singular-it.de>
Date: Wed, 8 Jan 2025 15:53:06 +0100
Subject: [PATCH 1/2] test: add failing test to debug #3665

---
 packages/shared/watchDebounced/index.test.ts | 27 ++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/packages/shared/watchDebounced/index.test.ts b/packages/shared/watchDebounced/index.test.ts
index b8317662fe5..9790aa41d92 100644
--- a/packages/shared/watchDebounced/index.test.ts
+++ b/packages/shared/watchDebounced/index.test.ts
@@ -44,4 +44,31 @@ describe('watchDebounced', () => {
     expect(cb).toHaveBeenCalledTimes(2)
     expect(cb).toHaveBeenCalledWith(4, 2, expect.anything())
   })
+
+  it.todo('should work with constant changes over multiple maxWaits', async () => {
+    vi.useFakeTimers()
+    const num = ref(0)
+    const cb = vi.fn()
+
+    const constantUpdateOverTime = async (ms: number) => {
+      for (let i = 0; i < ms; i++) {
+        num.value += 1
+        await vi.advanceTimersByTimeAsync(1)
+      }
+    }
+    watchDebounced(num, cb, { debounce: 10, maxWait: 50 })
+    expect(cb).toHaveBeenCalledTimes(0)
+    await constantUpdateOverTime(49)
+    expect(cb).toHaveBeenCalledTimes(0)
+    await constantUpdateOverTime(1)
+    expect(cb).toHaveBeenCalledTimes(1)
+    await constantUpdateOverTime(50)
+    expect(cb).toHaveBeenCalledTimes(2)
+    await constantUpdateOverTime(50)
+
+    expect(cb).toHaveBeenCalledTimes(3)
+    expect(cb.mock.calls[0][0]).toBe(50) // or 51
+    expect(cb.mock.calls[1][0]).toBe(100) // or 101
+    expect(cb.mock.calls[2][0]).toBe(150) // or 151
+  })
 })

From 033b405b40942341d97068201a26aefcc1519655 Mon Sep 17 00:00:00 2001
From: OrbisK <37191683+OrbisK@users.noreply.github.com>
Date: Sat, 11 Jan 2025 09:47:16 +0000
Subject: [PATCH 2/2] test: add `fails` variant

---
 packages/shared/watchDebounced/index.test.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/shared/watchDebounced/index.test.ts b/packages/shared/watchDebounced/index.test.ts
index 9790aa41d92..7357f3fabcc 100644
--- a/packages/shared/watchDebounced/index.test.ts
+++ b/packages/shared/watchDebounced/index.test.ts
@@ -45,7 +45,7 @@ describe('watchDebounced', () => {
     expect(cb).toHaveBeenCalledWith(4, 2, expect.anything())
   })
 
-  it.todo('should work with constant changes over multiple maxWaits', async () => {
+  it.fails('should work with constant changes over multiple maxWaits', async () => {
     vi.useFakeTimers()
     const num = ref(0)
     const cb = vi.fn()