[Improvement] Progress: pivot shouldn't cross border (#1135)

packages/progress/test/index.spec.js

@@ -0,0 +1,16 @@
+import Progress from '../';
+import { mount } from '@vue/test-utils';
+
+test('calc width', () => {
+  const wrapper = mount(Progress, {
+    propsData: {
+      showPivot: false,
+      percentage: 100
+    }
+  });
+  expect(wrapper.html()).toMatchSnapshot();
+
+  wrapper.vm.showPivot = true;
+  wrapper.vm.pivotText = 'test';
+  expect(wrapper.html()).toMatchSnapshot();
+});