Run yarn subprocess in shell mode (#162)

Author: davidbrochart

tests/conftest.py

@@ -40,12 +40,6 @@ async def yws_server(request):
 @pytest.fixture
 def yjs_client(request):
     client_id = request.param
-    p = subprocess.Popen(
-        [
-            "yarn",
-            "node",
-            f"{here / 'yjs_client_'}{client_id}.js",
-        ]
-    )
+    p = subprocess.Popen(f"yarn node {here / 'yjs_client_'}{client_id}.js", shell=True)
     yield p
     p.kill()