Add delays to provoke race condition in testing.

Author: ayjayt

src/py/tests/hang_scripts/WHY.md

@@ -0,0 +1,4 @@
+# Separate Testing Scripts
+
+These tests have to do with start/end of the python interpreter, so
+are run by a subprocess call. That means no pytest interference.

src/py/tests/hang_scripts/open.py

@@ -1,3 +1,6 @@
+import time
+
 import kaleido
 
 kaleido.start_sync_server()
+time.sleep(0.5)

src/py/tests/hang_scripts/open_close.py

@@ -1,4 +1,8 @@
+import time
+
 import kaleido
 
 kaleido.start_sync_server()
+time.sleep(0.5)
 kaleido.stop_sync_server()
+time.sleep(0.5)

src/py/tests/test_init.py

@@ -34,9 +34,13 @@ def kwargs():
 _ = kaleido._sync_server.GlobalKaleidoServer.open  # noqa: SLF001
 
 
-def test_hangers():
+def test_hangers_open_close():
     folder = Path(__file__).parent / "hang_scripts"
     subprocess.run([sys.executable, str(folder / "open_close.py")], check=True)  # noqa: S603
+
+
+def test_hangers_open_only():
+    folder = Path(__file__).parent / "hang_scripts"
     subprocess.run([sys.executable, str(folder / "open.py")], check=True)  # noqa: S603