DEV: Add test for load-more (#8369)

Follow-up to 3650c64bca2ce6d4012598446e10278d8fdda75e.

test/javascripts/components/load-more-test.js.es6

@@ -0,0 +1,27 @@
+import { configureEyeline } from "discourse/lib/eyeline";
+import componentTest from "helpers/component-test";
+
+moduleForComponent("load-more", { integration: true });
+
+componentTest("updates once after initialization", {
+  template: `
+    {{#load-more selector=".numbers tr" action=loadMore}}
+      <table class="numbers"><tr></tr></table>
+    {{/load-more}}`,
+
+  beforeEach() {
+    this.set("loadMore", () => this.set("loadedMore", true));
+    configureEyeline({
+      skipUpdate: false,
+      rootElement: Discourse.rootElement
+    });
+  },
+
+  afterEach() {
+    configureEyeline();
+  },
+
+  test(assert) {
+    assert.ok(this.loadedMore);
+  }
+});