PHPC-1950: Update authMechanism URI option tests

Now that URI option validation is consistent between connection strings and array options, we can remove the previous test for authSource without credentials.

Author: jmikola

tests/connect/bug1045.phpt

@@ -18,5 +18,5 @@ echo throws(function() {
 <?php exit(0); ?>
 --EXPECTF--
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Failed to parse URI options: 'SCRAM-SHA-1' authentication mechanism requires username.
+Failed to parse URI options: 'SCRAM-SHA-1' authentication mechanism requires username
 ===DONE===

tests/manager/manager-ctor-auth_mechanism-error-001.phpt

@@ -33,29 +33,22 @@ echo throws(function() {
     create_test_manager('mongodb://localhost:27017/', ['password' => 'password', 'authMechanism' => 'MONGODB-X509']);
 }, "MongoDB\Driver\Exception\InvalidArgumentException"), "\n";
 
-// TODO: This test case should be removed by PHPC-1950
-echo throws(function() {
-    create_test_manager('mongodb://localhost:27017/', ['authSource' => 'foo']);
-}, "MongoDB\Driver\Exception\InvalidArgumentException"), "\n";
-
 ?>
 ===DONE===
 <?php exit(0); ?>
 --EXPECT--
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
 Failed to parse MongoDB URI: 'mongodb://localhost:27017/?authMechanism=GSSAPI&authSource=admin'. GSSAPI and X509 require "$external" authSource.
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Failed to parse URI options: GSSAPI and X509 require "$external" authSource.
+Failed to parse URI options: GSSAPI and X509 require "$external" authSource
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
 Failed to parse MongoDB URI: 'mongodb://localhost:27017/?authMechanism=MONGODB-X509&authSource=admin'. GSSAPI and X509 require "$external" authSource.
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Failed to parse URI options: GSSAPI and X509 require "$external" authSource.
+Failed to parse URI options: GSSAPI and X509 require "$external" authSource
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
 Failed to parse MongoDB URI: 'mongodb://@localhost:27017/?authMechanism=SCRAM-SHA-1'. 'SCRAM-SHA-1' authentication mechanism requires username.
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Failed to parse URI options: 'SCRAM-SHA-1' authentication mechanism requires username.
-OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Failed to parse URI options: X509 authentication mechanism does not accept a password.
+Failed to parse URI options: 'SCRAM-SHA-1' authentication mechanism requires username
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Failed to parse URI options: Default authentication mechanism requires username.
+Failed to parse URI options: 'MONGODB-X509' authentication mechanism does not accept a password
 ===DONE===