go ahead and wait for servers to be running

Author: bollwyvl

atest/acceptance/01_server/00_basic.robot

@@ -27,7 +27,7 @@ Start three servers
     ${log2} =    Get Process Result    ${nb2}    stderr=${True}
     Should Contain    ${log2}    The Jupyter Notebook is running    msg=Log should contain expected status message
     ${log3} =    Get Process Result    ${nb3}    stderr=${True}
-    Should Not Contain    ${log3}    The Jupyter Notebook is running    msg=Unawaited server log should not contain expected status message
+    Should Contain    ${log2}    The Jupyter Notebook is running    msg=Log should contain expected status message
     ${terminated} =    Terminate All Jupyter Servers
     Should be equal as integers    ${terminated}    0    msg=No servers should have been terminated
 

src/JupyterLibrary/keywords/server.py

@@ -60,6 +60,8 @@ def start_new_jupyter_server(
         args = args or self.build_jupyter_server_arguments(port, base_url, token)
 
         handle = plib.start_process(command, *args, **config)
+        BuiltIn().sleep("5s")
+        plib.process_should_be_running(handle)
 
         self._handles += [handle]
         self._tmpdirs[handle] = tmpdir