Add arrays of enums in QueryParam using the multiple option

src/RouteDescriber/FosRestDescriber.php

@@ -225,7 +225,14 @@ private function describeCommonSchemaFromAnnotation(OA\Schema $schema, AbstractS
 
         $enum = $this->getEnum($annotation->requirements);
         if (null !== $enum) {
-            $schema->enum = $enum;
+            if ($annotation->requirements instanceof Choice) {
+                if ($annotation->requirements->multiple) {
+                    $schema->type = 'array';
+                    $schema->items = Util::createChild($schema, OA\Items::class, ['type' => 'string', 'enum' => $enum]);
+                } else {
+                    $schema->enum = $enum;
+                }
+            }
         }
     }
 

tests/RouteDescriber/FosRestDescriberTest.php

@@ -73,4 +73,31 @@ public function testQueryParamWithChoiceConstraintCallbackIsAddedAsEnum()
 
         $this->assertSame(['foo', 'bar'], $api->paths[0]->get->parameters[0]->schema->enum);
     }
+
+    public function testQueryParamWithChoiceConstraintAsArray()
+    {
+        $choices = ['foo', 'bar'];
+
+        $queryParam = new QueryParam();
+        $choice = new Choice($choices);
+        $choice->multiple = true;
+        $queryParam->requirements = $choice;
+
+        $readerMock = $this->createMock(Reader::class);
+        $readerMock->method('getMethodAnnotations')->willReturn([
+            $queryParam,
+        ]);
+
+        $fosRestDescriber = new FosRestDescriber($readerMock, []);
+        $api = new OpenApi([]);
+
+        $fosRestDescriber->describe(
+            $api,
+            new Route('/'),
+            $this->createMock(\ReflectionMethod::class)
+        );
+
+        $this->assertEquals('array', $api->paths[0]->get->parameters[0]->schema->type);
+        $this->assertSame($choices, $api->paths[0]->get->parameters[0]->schema->items->enum);
+    }
 }