make fifo's work

deltachat-rpc-client/tests/test_rpc_fifo.py

@@ -0,0 +1,22 @@
+import os
+import platform  # noqa
+import subprocess
+
+import pytest
+
+from deltachat_rpc_client import DeltaChat, RpcFIFO
+
+
+@pytest.mark.skipif("platform.system() == 'Windows'")
+def test_rpc_fifo(tmp_path):
+    fn_request_fifo = tmp_path.joinpath("request_fifo")
+    fn_response_fifo = tmp_path.joinpath("response_fifo")
+    os.mkfifo(fn_request_fifo)
+    os.mkfifo(fn_response_fifo)
+    popen = subprocess.Popen(f"deltachat-rpc-server <{fn_request_fifo} >{fn_response_fifo}", shell=True)
+
+    rpc = RpcFIFO(fn_response_fifo=fn_response_fifo, fn_request_fifo=fn_request_fifo)
+    with rpc:
+        dc = DeltaChat(rpc)
+        assert dc.rpc.get_system_info()["deltachat_core_version"] is not None
+    popen.wait()