PHPC-693: Unacknowledged write result reports null counts

In CDRIVER-1194, the reply BSON was changed to be empty for unacknowledged writes.

Author: jmikola

src/MongoDB/WriteResult.c

@@ -51,7 +51,7 @@ PHONGO_API zend_class_entry *php_phongo_writeresult_ce;
 
 zend_object_handlers php_phongo_handler_writeresult;
 
-/* {{{ proto integer WriteResult::getInsertedCount()
+/* {{{ proto integer|null WriteResult::getInsertedCount()
    Returns the number of documents that were inserted */
 PHP_METHOD(WriteResult, getInsertedCount)
 {
@@ -69,7 +69,7 @@ PHP_METHOD(WriteResult, getInsertedCount)
 	RETURN_LONG_FROM_BSON_INT32(&iter, intern->reply, "nInserted");
 }
 /* }}} */
-/* {{{ proto integer WriteResult::getMatchedCount()
+/* {{{ proto integer|null WriteResult::getMatchedCount()
    Returns the number of documents that matched the update criteria */
 PHP_METHOD(WriteResult, getMatchedCount)
 {
@@ -105,7 +105,7 @@ PHP_METHOD(WriteResult, getModifiedCount)
 	RETURN_LONG_FROM_BSON_INT32(&iter, intern->reply, "nModified");
 }
 /* }}} */
-/* {{{ proto integer WriteResult::getDeletedCount()
+/* {{{ proto integer|null WriteResult::getDeletedCount()
    Returns the number of documents that were deleted */
 PHP_METHOD(WriteResult, getDeletedCount)
 {
@@ -123,7 +123,7 @@ PHP_METHOD(WriteResult, getDeletedCount)
 	RETURN_LONG_FROM_BSON_INT32(&iter, intern->reply, "nRemoved");
 }
 /* }}} */
-/* {{{ proto integer WriteResult::getUpsertedCount()
+/* {{{ proto integer|null WriteResult::getUpsertedCount()
    Returns the number of documents that were upserted */
 PHP_METHOD(WriteResult, getUpsertedCount)
 {

tests/server/server-executeBulkWrite-002.phpt

@@ -25,7 +25,7 @@ foreach ($writeConcerns as $writeConcern) {
 <?php exit(0); ?>
 --EXPECT--
 bool(false)
-int(0)
+NULL
 bool(true)
 int(1)
 ===DONE===

tests/server/server-executeBulkWrite-003.phpt

@@ -26,7 +26,7 @@ foreach ($writeConcerns as $wc) {
 <?php exit(0); ?>
 --EXPECT--
 bool(false)
-int(0)
+NULL
 bool(true)
 int(1)
 bool(true)

tests/server/server-executeBulkWrite-004.phpt

@@ -33,7 +33,7 @@ foreach ($writeConcerns as $wc) {
 <?php exit(0); ?>
 --EXPECT--
 bool(false)
-int(0)
+NULL
 OK: Got MongoDB\Driver\Exception\RuntimeException
 not master
 OK: Got MongoDB\Driver\Exception\RuntimeException

tests/server/server-executeBulkWrite-005.phpt

@@ -31,7 +31,7 @@ $server->executeCommand('local', $command);
 <?php exit(0); ?>
 --EXPECT--
 bool(false)
-int(0)
+NULL
 bool(true)
 int(1)
 ===DONE===

tests/standalone/writeresult-isacknowledged-003.phpt

@@ -22,15 +22,15 @@ var_dump($result);
 WriteResult::isAcknowledged(): false
 object(MongoDB\Driver\WriteResult)#%d (%d) {
   ["nInserted"]=>
-  int(0)
+  NULL
   ["nMatched"]=>
-  int(0)
+  NULL
   ["nModified"]=>
-  int(0)
+  NULL
   ["nRemoved"]=>
-  int(0)
+  NULL
   ["nUpserted"]=>
-  int(0)
+  NULL
   ["upsertedIds"]=>
   array(0) {
   }