fix: listener queue parity pump (#1338)

src/tests/websocket/listenerQueueAdapter.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, test } from "bun:test";
+import { getListenerBlockedReason } from "../../websocket/helpers/listenerQueueAdapter";
+
+const allClear = {
+  isProcessing: false,
+  pendingApprovalsLen: 0,
+  cancelRequested: false,
+  isRecoveringApprovals: false,
+} as const;
+
+describe("getListenerBlockedReason", () => {
+  test("returns null when unblocked", () => {
+    expect(getListenerBlockedReason(allClear)).toBeNull();
+  });
+
+  test("prioritizes pending approvals", () => {
+    expect(
+      getListenerBlockedReason({ ...allClear, pendingApprovalsLen: 2 }),
+    ).toBe("pending_approvals");
+  });
+
+  test("prioritizes interrupt over runtime busy", () => {
+    expect(
+      getListenerBlockedReason({
+        ...allClear,
+        cancelRequested: true,
+        isProcessing: true,
+      }),
+    ).toBe("interrupt_in_progress");
+  });
+
+  test("maps recoveries to runtime busy", () => {
+    expect(
+      getListenerBlockedReason({ ...allClear, isRecoveringApprovals: true }),
+    ).toBe("runtime_busy");
+  });
+
+  test("maps active processing to runtime busy", () => {
+    expect(getListenerBlockedReason({ ...allClear, isProcessing: true })).toBe(
+      "runtime_busy",
+    );
+  });
+});