fix: Hide deleted messages on widget side (#2614)

app/javascript/widget/mixins/specs/messageMixin.spec.js

@@ -0,0 +1,37 @@
+import { shallowMount } from '@vue/test-utils';
+import messageMixin from '../messageMixin';
+import messages from './messageFixture';
+
+describe('messageMixin', () => {
+  let Component = {
+    render() {},
+    title: 'TestComponent',
+    mixins: [messageMixin],
+  };
+
+  it('deleted messages', async () => {
+    const wrapper = shallowMount(Component, {
+      data() {
+        return {
+          message: messages.deletedMessage,
+        };
+      },
+    });
+    expect(wrapper.vm.messageContentAttributes).toEqual({
+      deleted: true,
+    });
+    expect(wrapper.vm.hasAttachments).toBe(false);
+  });
+  it('non-deleted messages', async () => {
+    const wrapper = shallowMount(Component, {
+      data() {
+        return {
+          message: messages.nonDeletedMessage,
+        };
+      },
+    });
+    expect(wrapper.vm.deletedMessage).toBe(undefined);
+    expect(wrapper.vm.messageContentAttributes).toEqual({});
+    expect(wrapper.vm.hasAttachments).toBe(true);
+  });
+});