made auth fail explicitly

Author: Matthias Ekundayo

data_diff/databases/presto.py

@@ -41,20 +41,13 @@ def __init__(self, **kw):
         if kw.get("schema"):
             self.default_schema = kw.get("schema")
 
-        try:
-            # checks if user and password are missing when auth=basic
-            kw.get("auth") == "basic" and "user" in kw and "password" in kw
-            # if auth=basic, add basic authenticator for Presto
+        if kw.get("auth") == "basic":  # if auth=basic, add basic authenticator for Presto
             kw["auth"] = prestodb.auth.BasicAuthentication(kw.pop("user"), kw.pop("password"))
-        except:
-            raise KeyError("User or password cannot be missing if auth==basic")
 
         if "cert" in kw:  # if a certificate was specified in URI, verify session with cert
             cert = kw.pop("cert")
-
             self._conn = prestodb.dbapi.connect(**kw)
             self._conn._http_session.verify = cert
-
         else:
             self._conn = prestodb.dbapi.connect(**kw)