Commit LLM generated test cases

frontend/deterministic-tests/src/tests/create-update-coalesce-server-pause.test.ts

@@ -0,0 +1,50 @@
+import type { ClientState, TestDefinition } from "../test-definition";
+import { assert } from "../utils/assert";
+
+function verifyFinalContent(state: ClientState): void {
+    assert(
+        state.files.size === 1,
+        `Expected 1 file, got ${state.files.size}: ${Array.from(state.files.keys()).join(", ")}`
+    );
+    assert(
+        state.files.has("doc.md"),
+        `Expected doc.md to exist`
+    );
+    const content = state.files.get("doc.md") ?? "";
+    assert(
+        content === "final version",
+        `Expected doc.md to have "final version", got: "${content}"`
+    );
+}
+
+export const createUpdateCoalesceServerPauseTest: TestDefinition = {
+    name: "Create + Update Coalescing During Server Pause",
+    description:
+        "Client 0 creates a file and immediately updates it while the server " +
+        "is paused. Both operations should coalesce in the queue. When the " +
+        "server resumes, the final content should be the updated version.",
+    clients: 2,
+    steps: [
+        { type: "enable-sync", client: 0 },
+        { type: "enable-sync", client: 1 },
+
+        // Pause server so HTTP requests stall
+        { type: "pause-server" },
+
+        // Client 0: create then immediately update
+        { type: "create", client: 0, path: "doc.md", content: "initial" },
+        { type: "update", client: 0, path: "doc.md", content: "final version" },
+
+        // Wait a bit for requests to queue up
+
+        // Resume server
+        { type: "resume-server" },
+
+        // Both sync
+        { type: "sync" },
+        { type: "barrier" },
+
+        // Final state: doc.md with "final version" on both clients
+        { type: "assert-consistent", verify: verifyFinalContent }
+    ]
+};