Rename all test files from JS -> ES6

test/javascripts/models/nav-item-test.js

@@ -0,0 +1,44 @@
+import { run } from "@ember/runloop";
+import createStore from "helpers/create-store";
+import NavItem from "discourse/models/nav-item";
+import Category from "discourse/models/category";
+import Site from "discourse/models/site";
+
+QUnit.module("NavItem", {
+  beforeEach() {
+    run(function() {
+      const asianCategory = Category.create({
+        name: "确实是这样",
+        id: 343434
+      });
+      Site.currentProp("categories").addObject(asianCategory);
+    });
+  }
+});
+
+QUnit.test("href", assert => {
+  assert.expect(2);
+
+  function href(text, expected, label) {
+    assert.equal(NavItem.fromText(text, {}).get("href"), expected, label);
+  }
+
+  href("latest", "/latest", "latest");
+  href("categories", "/categories", "categories");
+});
+
+QUnit.test("count", assert => {
+  const navItem = createStore().createRecord("nav-item", { name: "new" });
+
+  assert.equal(navItem.get("count"), 0, "it has no count by default");
+
+  const tracker = navItem.get("topicTrackingState");
+  tracker.states["t1"] = { topic_id: 1, last_read_post_number: null };
+  tracker.incrementMessageCount();
+
+  assert.equal(
+    navItem.get("count"),
+    1,
+    "it updates when a new message arrives"
+  );
+});