test: add qunit acceptance test for topic count tracking in custom nav links

Author: akanora

test/javascripts/acceptance/nav-bar-additions-test.js

@@ -0,0 +1,48 @@
+import { acceptance, exists } from "discourse/tests/helpers/qunit-helpers";
+import { visit } from "@ember/test-helpers";
+import { test } from "qunit";
+
+acceptance("Custom Top Navigation Links | Topic Counts", function (needs) {
+  needs.user();
+  needs.settings({
+    nav_links: [
+      {
+        display_name: "New Topics",
+        title: "new topics",
+        url: "/new",
+      },
+      {
+        display_name: "Unread Topics",
+        title: "unread topics",
+        url: "/unread",
+      },
+    ],
+    Show_counts: true,
+  });
+
+  test("shows new and unread counts in navigation items", async function (assert) {
+    const topicTrackingState = this.owner.lookup(
+      "service:topic-tracking-state"
+    );
+    topicTrackingState.countNew = () => 42;
+    topicTrackingState.countUnread = () => 17;
+
+    await visit("/");
+
+    assert.ok(
+      exists(".nav-item_custom_new-topics"),
+      "custom navigation item for new topics is rendered"
+    );
+    assert
+      .dom(".nav-item_custom_new-topics a")
+      .hasText("New Topics (42)", "it shows the custom new topics count");
+
+    assert.ok(
+      exists(".nav-item_custom_unread-topics"),
+      "custom navigation item for unread topics is rendered"
+    );
+    assert
+      .dom(".nav-item_custom_unread-topics a")
+      .hasText("Unread Topics (17)", "it shows the custom unread topics count");
+  });
+});