Rename all test files from JS -> ES6

test/javascripts/models/user-action-test.js

@@ -0,0 +1,30 @@
+import UserAction from "discourse/models/user-action";
+
+QUnit.module("model: user-action");
+
+QUnit.test("collapsing likes", assert => {
+  var actions = UserAction.collapseStream([
+    UserAction.create({
+      action_type: UserAction.TYPES.likes_given,
+      topic_id: 1,
+      user_id: 1,
+      post_number: 1
+    }),
+    UserAction.create({
+      action_type: UserAction.TYPES.edits,
+      topic_id: 2,
+      user_id: 1,
+      post_number: 1
+    }),
+    UserAction.create({
+      action_type: UserAction.TYPES.likes_given,
+      topic_id: 1,
+      user_id: 2,
+      post_number: 1
+    })
+  ]);
+
+  assert.equal(actions.length, 2);
+  assert.equal(actions[0].get("children.length"), 1);
+  assert.equal(actions[0].get("children")[0].items.length, 2);
+});