PHPLIB-638: Ensure writeConcernError is reported for findAndModify (#983)

Author: levon80999

tests/Operation/FindAndModifyFunctionalTest.php

@@ -3,6 +3,7 @@
 namespace MongoDB\Tests\Operation;
 
 use MongoDB\Driver\BulkWrite;
+use MongoDB\Driver\Exception\CommandException;
 use MongoDB\Driver\ReadPreference;
 use MongoDB\Driver\WriteConcern;
 use MongoDB\Exception\UnsupportedException;
@@ -92,6 +93,25 @@ public function testHintOptionAndUnacknowledgedWriteConcernUnsupportedClientSide
         $operation->execute($this->getPrimaryServer());
     }
 
+    public function testFindAndModifyReportedWriteConcernError(): void
+    {
+        if (($this->isShardedCluster() && ! $this->isShardedClusterUsingReplicasets()) || ! $this->isReplicaSet()) {
+            $this->markTestSkipped('Test only applies to replica sets');
+        }
+
+        $this->expectException(CommandException::class);
+        $this->expectExceptionCode(100);
+        $this->expectExceptionMessageMatches('/Write Concern error:/');
+
+        $operation = new FindAndModify(
+            $this->getDatabaseName(),
+            $this->getCollectionName(),
+            ['remove' => true, 'writeConcern' => new WriteConcern(50)]
+        );
+
+        $operation->execute($this->getPrimaryServer());
+    }
+
     public function testSessionOption(): void
     {
         (new CommandObserver())->observe(