From 202a699747474233d2b0280e2d6d94884a1f1bc7 Mon Sep 17 00:00:00 2001
From: Lawrence Chen <lawrencecchen@users.noreply.github.com>
Date: Mon, 23 Mar 2026 19:10:33 -0700
Subject: [PATCH] Add regression test for workspace insertion

---
 cmuxTests/WorkspaceUnitTests.swift | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/cmuxTests/WorkspaceUnitTests.swift b/cmuxTests/WorkspaceUnitTests.swift
index 32cd30b2..2cfedc94 100644
--- a/cmuxTests/WorkspaceUnitTests.swift
+++ b/cmuxTests/WorkspaceUnitTests.swift
@@ -334,6 +334,21 @@ final class WorkspaceCreationPlacementTests: XCTestCase {
         XCTAssertEqual(insertedIndex, baselineCount)
     }
 
+    func testAddWorkspaceAfterCurrentOverrideAppendsAfterLastSelectedWorkspace() {
+        let manager = TabManager()
+        _ = manager.tabs[0]
+        _ = manager.addWorkspace()
+        _ = manager.addWorkspace()
+        let fourth = manager.addWorkspace()
+        let baselineOrder = manager.tabs.map(\.id)
+
+        manager.selectWorkspace(fourth)
+        let inserted = manager.addWorkspace(placementOverride: .afterCurrent)
+
+        XCTAssertEqual(manager.tabs.map(\.id).filter { $0 != inserted.id }, baselineOrder)
+        XCTAssertEqual(manager.tabs.last?.id, inserted.id)
+    }
+
     private func makeManagerWithThreeWorkspaces() -> TabManager {
         let manager = TabManager()
         _ = manager.addWorkspace()