diff --git a/packages/query-devtools/src/__tests__/Devtools.test.tsx b/packages/query-devtools/src/__tests__/Devtools.test.tsx
index 924be5aad5..f1254d80c3 100644
--- a/packages/query-devtools/src/__tests__/Devtools.test.tsx
+++ b/packages/query-devtools/src/__tests__/Devtools.test.tsx
@@ -32,6 +32,7 @@ describe('Devtools', () => {
   let previousRootFontSize = ''
 
   beforeEach(() => {
+    vi.useFakeTimers()
     previousRootFontSize = document.documentElement.style.fontSize
     // jsdom doesn't implement `PointerEvent`; the DropdownMenu trigger checks
     // `e.pointerType !== 'touch'` on pointerdown to decide whether to open,
@@ -101,6 +102,7 @@ describe('Devtools', () => {
   })
 
   afterEach(() => {
+    vi.useRealTimers()
     vi.unstubAllGlobals()
     Object.keys(storage).forEach((key) => delete storage[key])
     queryClient.clear()
@@ -244,4 +246,227 @@ describe('Devtools', () => {
       expect(localStorage.getItem('TanstackQueryDevtools.open')).toBe('false')
     })
   })
+
+  describe('query list', () => {
+    it('should render a row for each query in the cache', () => {
+      queryClient.setQueryData(['posts'], [{ id: 1 }])
+      queryClient.setQueryData(['users', 'me'], { id: 'u1' })
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      expect(
+        rendered.getByLabelText(/Query key \["posts"\]/),
+      ).toBeInTheDocument()
+      expect(
+        rendered.getByLabelText(/Query key \["users","me"\]/),
+      ).toBeInTheDocument()
+    })
+
+    it('should reflect a newly added query reactively', () => {
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      expect(
+        rendered.queryByLabelText(/Query key \["new"\]/),
+      ).not.toBeInTheDocument()
+
+      queryClient.setQueryData(['new'], 'hello')
+
+      expect(rendered.getByLabelText(/Query key \["new"\]/)).toBeInTheDocument()
+    })
+
+    it('should filter queries by "queryHash"', () => {
+      queryClient.setQueryData(['posts'], [])
+      queryClient.setQueryData(['users'], [])
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      fireEvent.input(rendered.getByLabelText('Filter queries by query key'), {
+        target: { value: 'posts' },
+      })
+
+      expect(
+        rendered.getByLabelText(/Query key \["posts"\]/),
+      ).toBeInTheDocument()
+      expect(
+        rendered.queryByLabelText(/Query key \["users"\]/),
+      ).not.toBeInTheDocument()
+    })
+
+    it('should clear all queries when the clear cache button is clicked', () => {
+      queryClient.setQueryData(['posts'], [])
+      queryClient.setQueryData(['users'], [])
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      fireEvent.click(rendered.getByLabelText('Clear query cache'))
+
+      expect(
+        rendered.queryByLabelText(/Query key \["posts"\]/),
+      ).not.toBeInTheDocument()
+      expect(
+        rendered.queryByLabelText(/Query key \["users"\]/),
+      ).not.toBeInTheDocument()
+    })
+
+    it('should dispatch a "CLEAR_MUTATION_CACHE" event when clear cache is clicked in mutations view', () => {
+      const rendered = renderDevtools({ initialIsOpen: true })
+      fireEvent.click(rendered.getByText('Mutations'))
+
+      const listener = vi.fn()
+      window.addEventListener('@tanstack/query-devtools-event', listener)
+
+      try {
+        fireEvent.click(rendered.getByLabelText('Clear query cache'))
+
+        const dispatched = listener.mock.calls.some(
+          ([e]) => (e as CustomEvent).detail.type === 'CLEAR_MUTATION_CACHE',
+        )
+        expect(dispatched).toBe(true)
+      } finally {
+        window.removeEventListener('@tanstack/query-devtools-event', listener)
+      }
+    })
+  })
+
+  describe('view toggle', () => {
+    it('should switch to mutations view when the mutations toggle is clicked', () => {
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      fireEvent.click(rendered.getByText('Mutations'))
+
+      expect(
+        rendered.container.querySelector('.tsqd-mutations-container'),
+      ).not.toBeNull()
+    })
+
+    it('should render mutations in the mutations view', async () => {
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      fireEvent.click(rendered.getByText('Mutations'))
+
+      const mutation = queryClient.getMutationCache().build(queryClient, {
+        mutationKey: ['add-post'],
+        mutationFn: () => Promise.resolve('ok'),
+      })
+      mutation.execute({})
+      await vi.advanceTimersByTimeAsync(0)
+
+      expect(
+        rendered.getByLabelText(/Mutation submitted at/),
+      ).toBeInTheDocument()
+    })
+  })
+
+  describe('disabled and static queries', () => {
+    it('should mark a disabled query in the row label', () => {
+      const observer = queryClient.getQueryCache().build(queryClient, {
+        queryKey: ['disabled-q'],
+        queryFn: () => 'x',
+      })
+      observer.setOptions({
+        ...observer.options,
+        enabled: false,
+      } as typeof observer.options)
+      observer.setState({ ...observer.state, data: 'x' })
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      expect(rendered.getByLabelText(/disabled/)).toBeInTheDocument()
+    })
+  })
+
+  describe('status counts', () => {
+    it('should render status count badges', () => {
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      expect(rendered.getByLabelText(/Fresh: \d+/)).toBeInTheDocument()
+      expect(rendered.getByLabelText(/Stale: \d+/)).toBeInTheDocument()
+      expect(rendered.getByLabelText(/Fetching: \d+/)).toBeInTheDocument()
+      expect(rendered.getByLabelText(/Paused: \d+/)).toBeInTheDocument()
+      expect(rendered.getByLabelText(/Inactive: \d+/)).toBeInTheDocument()
+    })
+
+    it('should reflect the inactive count when a query is added without observers', () => {
+      const rendered = renderDevtools({ initialIsOpen: true })
+
+      expect(rendered.getByLabelText('Inactive: 0')).toBeInTheDocument()
+
+      queryClient.setQueryData(['posts'], [{ id: 1 }])
+
+      expect(rendered.getByLabelText('Inactive: 1')).toBeInTheDocument()
+    })
+  })
+
+  describe('status tooltip', () => {
+    it('should show the tooltip on mouse enter and hide it on mouse leave when the panel is narrow', () => {
+      // Re-stub ResizeObserver with a narrow width (< secondBreakpoint = 796)
+      // so `showLabel()` is false and the tooltip is rendered conditionally on
+      // hover/focus.
+      vi.stubGlobal(
+        'ResizeObserver',
+        class {
+          callback: ResizeObserverCallback
+          constructor(callback: ResizeObserverCallback) {
+            this.callback = callback
+          }
+          observe = vi.fn((target: Element) => {
+            this.callback(
+              [
+                {
+                  target,
+                  contentRect: { width: 500, height: 500 } as DOMRectReadOnly,
+                } as ResizeObserverEntry,
+              ],
+              this as unknown as ResizeObserver,
+            )
+          })
+          unobserve = vi.fn()
+          disconnect = vi.fn()
+        },
+      )
+
+      const rendered = renderDevtools({ initialIsOpen: true })
+      const fresh = rendered.getByLabelText('Fresh: 0')
+
+      expect(rendered.queryByRole('tooltip')).not.toBeInTheDocument()
+
+      fireEvent.mouseEnter(fresh)
+      expect(rendered.getByRole('tooltip')).toBeInTheDocument()
+
+      fireEvent.mouseLeave(fresh)
+      expect(rendered.queryByRole('tooltip')).not.toBeInTheDocument()
+    })
+
+    it('should show the tooltip on focus and hide it on blur when the panel is narrow', () => {
+      vi.stubGlobal(
+        'ResizeObserver',
+        class {
+          callback: ResizeObserverCallback
+          constructor(callback: ResizeObserverCallback) {
+            this.callback = callback
+          }
+          observe = vi.fn((target: Element) => {
+            this.callback(
+              [
+                {
+                  target,
+                  contentRect: { width: 500, height: 500 } as DOMRectReadOnly,
+                } as ResizeObserverEntry,
+              ],
+              this as unknown as ResizeObserver,
+            )
+          })
+          unobserve = vi.fn()
+          disconnect = vi.fn()
+        },
+      )
+
+      const rendered = renderDevtools({ initialIsOpen: true })
+      const fresh = rendered.getByLabelText('Fresh: 0')
+
+      expect(rendered.queryByRole('tooltip')).not.toBeInTheDocument()
+
+      fireEvent.focus(fresh)
+      expect(rendered.getByRole('tooltip')).toBeInTheDocument()
+
+      fireEvent.blur(fresh)
+      expect(rendered.queryByRole('tooltip')).not.toBeInTheDocument()
+    })
+  })
 })