test: improve test cases typing (#8202)

src/toast/test/index.spec.ts

@@ -0,0 +1,41 @@
+import Toast from '../Toast';
+import { mount , later } from '../../../test';
+
+
+test('should change overlay style after using overlay-style prop', async () => {
+  const wrapper = mount(Toast, {
+    props: {
+      show: true,
+      overlayStyle: {
+        background: 'red',
+      },
+    },
+  });
+
+  await later();
+  expect(wrapper.find('.van-overlay').style.background).toEqual('red');
+});
+
+test('should close Toast when using closeOnClick prop and clicked', () => {
+  const wrapper = mount(Toast, {
+    props: {
+      show: true,
+      closeOnClick: true,
+    },
+  });
+
+  wrapper.find('.van-toast').trigger('click');
+  expect(wrapper.emitted('update:show')[0]).toEqual([false]);
+});
+
+test('should close Toast when using closeOnClickOverlay prop and overlay is clicked', () => {
+  const wrapper = mount(Toast, {
+    props: {
+      show: true,
+      closeOnClickOverlay: true,
+    },
+  });
+
+  wrapper.find('.van-overlay').trigger('click');
+  expect(wrapper.emitted('update:show')[0]).toEqual([false]);
+});