fix: update reset zoom test to verify full update and axis state restoration

Author: Harsh3006

tests/unit/fast-update.spec.js

@@ -101,17 +101,21 @@ describe('fastUpdate() — partial updateSeries fast path', () => {
     expect(chart.getState().maxY).toBe(9)
   })
 
-  it('reset zoom should force full update when previously zoomed', async () => {
+  it('reset zoom should restore axis state using full update', async () => {
     const chart = createChart('line', [{ data: [1, 2, 3, 4, 5] }])
 
     const fastUpdateSpy = vi.spyOn(chart, 'fastUpdate')
     const updateSpy = vi.spyOn(chart, 'update')
 
     chart.zoomX(2, 4)
+    fastUpdateSpy.mockClear()
+    updateSpy.mockClear()
 
-    await chart.ctx.toolbar.handleZoomReset()
-
-    expect(updateSpy).toHaveBeenCalled()
+    chart.ctx.toolbar.handleZoomReset()
+    expect(chart.w.interact.zoomed).toBe(false)
+    expect(chart.w.globals.minX).toBe(1)
+    expect(chart.w.globals.maxX).toBe(5)
     expect(fastUpdateSpy).not.toHaveBeenCalled()
+    expect(updateSpy).toHaveBeenCalledOnce()
   })
 })