From 125d7a94caf7ea15db7fd7dff66a6119ea6e4f2b Mon Sep 17 00:00:00 2001
From: Vincent Koc <25068+vincentkoc@users.noreply.github.com>
Date: Sat, 11 Jul 2026 05:39:15 -0700
Subject: [PATCH] test(ci): lock balanced whole shard packing

---
 test/scripts/ci-node-test-plan.test.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/test/scripts/ci-node-test-plan.test.ts b/test/scripts/ci-node-test-plan.test.ts
index ebc4bd920032..265565595cde 100644
--- a/test/scripts/ci-node-test-plan.test.ts
+++ b/test/scripts/ci-node-test-plan.test.ts
@@ -208,6 +208,20 @@ describe("scripts/lib/ci-node-test-plan.mjs", () => {
         .filter((shard) => shard.groups.some((group) => !group.includePatterns))
         .every((shard) => shard.timeoutMinutes === 120),
     ).toBe(true);
+    const smallWholeJobs = compact.filter((shard) =>
+      shard.checkName.startsWith("checks-node-compact-small-whole-"),
+    );
+    const wholeGroupCounts = smallWholeJobs.map((shard) => shard.groups.length);
+    expect(Math.max(...wholeGroupCounts) - Math.min(...wholeGroupCounts)).toBeLessThanOrEqual(1);
+    const toolingJob = smallWholeJobs.find((shard) =>
+      shard.groups.some((group) => group.shard_name === "core-tooling"),
+    );
+    const tuiPtyJob = smallWholeJobs.find((shard) =>
+      shard.groups.some((group) => group.shard_name === "core-runtime-tui-pty"),
+    );
+    expect(toolingJob).toBeDefined();
+    expect(tuiPtyJob).toBeDefined();
+    expect(toolingJob?.checkName).not.toBe(tuiPtyJob?.checkName);
   });
 
   it("splits the slow core unit shards while keeping paired source/security coverage", () => {