Rewrite/Test rounding logic of numeric widgets (#2758)

tests-ui/tests/composables/widgets/useIntWidget.test.ts

@@ -0,0 +1,70 @@
+import { _for_testing } from '@/composables/widgets/useIntWidget'
+
+jest.mock('@/scripts/widgets', () => ({
+  addValueControlWidgets: jest.fn()
+}))
+
+jest.mock('@/stores/settingStore', () => ({
+  useSettingStore: () => ({
+    settings: {}
+  })
+}))
+
+const { onValueChange } = _for_testing
+
+describe('useIntWidget', () => {
+  describe('onValueChange', () => {
+    let widget: any
+
+    beforeEach(() => {
+      // Reset the widget before each test
+      widget = {
+        options: {},
+        value: 0
+      }
+    })
+
+    it('should round values based on step size', () => {
+      widget.options.step2 = 0.1
+      onValueChange.call(widget, 5.7)
+      expect(widget.value).toBe(5.7)
+
+      widget.options.step2 = 0.5
+      onValueChange.call(widget, 7.3)
+      expect(widget.value).toBe(7.5)
+
+      widget.options.step2 = 1
+      onValueChange.call(widget, 23.4)
+      expect(widget.value).toBe(23)
+    })
+
+    it('should handle undefined step by using default of 1', () => {
+      widget.options.step2 = undefined
+      onValueChange.call(widget, 3.7)
+      expect(widget.value).toBe(4)
+    })
+
+    it('should account for min value offset', () => {
+      widget.options.step2 = 2
+      widget.options.min = 1
+      // 2 valid values between 1.6 are 1 and 3
+      // 1.6 is closer to 1, so it should round to 1
+      onValueChange.call(widget, 1.6)
+      expect(widget.value).toBe(1)
+    })
+
+    it('should handle undefined min by using default of 0', () => {
+      widget.options.step2 = 2
+      widget.options.min = undefined
+      onValueChange.call(widget, 5.7)
+      expect(widget.value).toBe(6)
+    })
+
+    it('should handle NaN shift value', () => {
+      widget.options.step2 = 0
+      widget.options.min = 1
+      onValueChange.call(widget, 5.7)
+      expect(widget.value).toBe(6)
+    })
+  })
+})