Create tests: dumps message, "retry" (#281)

e2e-tests/dump_messages.spec.ts

@@ -0,0 +1,8 @@
+import { test } from "./helpers/test_helper";
+
+// This is useful to make sure the messages are being sent correctly.
+test("dump messages", async ({ po }) => {
+  await po.setUp();
+  await po.sendPrompt("[dump]");
+  await po.snapshotServerDump();
+});