diff --git a/tests/test_idle.py b/tests/test_idle.py
index 84a11b968882cac97ecfec08fcc19406dc2cdf0c..90c28c709c7d681aabb1a811743a9cbebead1498 100644
--- a/tests/test_idle.py
+++ b/tests/test_idle.py
@@ -184,6 +184,25 @@ def _test_block():
         assert called[0]
 
 
+@pytest.mark.wxtest
+def test_block_until_with_gui():    _run_with_wx(   _test_block_until)
+def test_block_until_without_gui(): _run_without_wx(_test_block_until)
+def _test_block_until():
+    ev = threading.Event()
+
+    def task():
+        time.sleep(1)
+        ev.set()
+
+    threading.Thread(target=task).start()
+
+    start = time.time()
+    idle.block(3, until=ev.is_set)
+    end = time.time()
+
+    assert end - start < 3
+
+
 @pytest.mark.wxtest
 def test_idle():