Improve the error message in contract failures due to multiple missing fields

2019-08-05 15:47:58 +02:00 · 2019-08-05 15:47:58 +02:00 · bff335cf7f
parent a8621bbc29
commit bff335cf7f
1 changed files with 2 additions and 1 deletions
--- a/scrapy/contracts/default.py
+++ b/scrapy/contracts/default.py
@ -86,4 +86,5 @@ class ScrapesContract(Contract):
            if isinstance(x, (BaseItem, dict)):
                missing = [arg for arg in self.args if arg not in x]
                if missing:
-                    raise ContractFail("'%s' field is missing" % " ".join(missing))
+                    raise ContractFail(
+                        "Missing fields: %s" % ", ".join(missing))