HHVM-193: executeBulkWrite() should throw InvalidArgumentException for empty BulkWrite

tests/MongoDBDriverManager_executeBulkWrite-error-001.phpt

@@ -0,0 +1,22 @@
+--TEST--
+MongoDB\Driver\Manager::executeBulkWrite() update write error
+--FILE--
+<?php
+include dirname(__FILE__) . '/utils.inc';
+
+$m = new MongoDB\Driver\Manager("mongodb://localhost:27017");
+cleanup( $m );
+
+$bw = new MongoDB\Driver\BulkWrite();
+
+try {
+	$result = $m->executeBulkWrite( 'demo.test', $bw );
+} catch ( Exception $e ) {
+	echo get_class( $e ), "\n";
+	echo $e->getMessage(), "\n";
+}
+
+?>
+--EXPECT--
+MongoDB\Driver\Exception\InvalidArgumentException
+Cannot execute an empty BulkWrite

utils.cpp

@@ -148,12 +148,14 @@ HPHP::Object Utils::throwExceptionFromBsonError(bson_error_t *error)
 		case MONGOC_ERROR_BSON_INVALID:
 		case MONGOC_ERROR_MATCHER_INVALID:
 		case MONGOC_ERROR_NAMESPACE_INVALID:
-		case MONGOC_ERROR_COMMAND_INVALID_ARG:
 		case MONGOC_ERROR_COLLECTION_INSERT_FAILED:
 		case MONGOC_ERROR_GRIDFS_INVALID_FILENAME:
 		case MONGOC_ERROR_QUERY_COMMAND_NOT_FOUND:
 		case MONGOC_ERROR_QUERY_NOT_TAILABLE:
 			return Utils::CreateAndConstruct(s_MongoDriverExceptionRuntimeException_className, HPHP::Variant(error->message), HPHP::Variant((uint64_t) error->code));
+
+		case MONGOC_ERROR_COMMAND_INVALID_ARG:
+			return Utils::CreateAndConstruct(s_MongoDriverExceptionInvalidArgumentException_className, HPHP::Variant("Cannot execute an empty BulkWrite"), HPHP::Variant((uint64_t) 0));
 	}
 	switch (error->domain) {
 		case MONGOC_ERROR_CLIENT: