Fix PLC1901 compare-to-empty-string

Author: paravoid

ircstream.py

@@ -162,7 +162,7 @@ def from_message(cls, message: str) -> IRCMessage:
 
         while original_params:
             # skip multiple spaces in middle of message, as per RFC 1459
-            if original_params[0] == "" and len(original_params) > 1:
+            if not original_params[0] and len(original_params) > 1:
                 original_params.pop(0)
                 continue
             elif original_params[0].startswith(":"):

tests/test_ircmessage.py

@@ -50,7 +50,7 @@ def test_msg_split(data_msg_split: Mapping[str, Any]) -> None:
     if "verb" in atoms:
         assert parsed.command.lower() == atoms["verb"].lower()
     else:
-        assert parsed.command == ""
+        assert not parsed.command
 
     if "params" in atoms:
         atom_params = list(atoms["params"])