Added a unit test

tests/unit/TaskList.spec.js

@@ -0,0 +1,15 @@
+import Vue from "vue";
+import TaskList from "../../src/components/TaskList.vue";
+import { withPinnedTasks } from "../../src/components/TaskList.stories";
+
+it("renders pinned tasks at the start of the list", () => {
+  const Constructor = Vue.extend(TaskList);
+  const vm = new Constructor({
+    propsData: { tasks: withPinnedTasks }
+  }).$mount();
+  const lastTaskInput = vm.$el.querySelector(
+    ".list-item:nth-child(1).TASK_PINNED"
+  );
+
+  // We expect the pinned task to be rendered first, not at the end
+  expect(lastTaskInput).not.toBe(null);