Revert "Rename all test files from JS -> ES6"

This reverts commit 2abe85b8344de1102c1589a9ac9421a8b296f2b5.

test/javascripts/controllers/avatar-selector-test.js.es6

@@ -0,0 +1,41 @@
+import { mapRoutes } from "discourse/mapping-router";
+
+moduleFor("controller:avatar-selector", "controller:avatar-selector", {
+  beforeEach() {
+    this.registry.register("router:main", mapRoutes());
+  },
+  needs: ["controller:modal"]
+});
+
+QUnit.test("avatarTemplate", function(assert) {
+  const avatarSelectorController = this.subject();
+
+  avatarSelectorController.setProperties({
+    selected: "system",
+    user: {
+      system_avatar_upload_id: 1,
+      gravatar_avatar_upload_id: 2,
+      custom_avatar_upload_id: 3
+    }
+  });
+
+  assert.equal(
+    avatarSelectorController.get("selectedUploadId"),
+    1,
+    "we are using system by default"
+  );
+
+  avatarSelectorController.set("selected", "gravatar");
+  assert.equal(
+    avatarSelectorController.get("selectedUploadId"),
+    2,
+    "we are using gravatar when set"
+  );
+
+  avatarSelectorController.set("selected", "custom");
+  assert.equal(
+    avatarSelectorController.get("selectedUploadId"),
+    3,
+    "we are using custom when set"
+  );
+});