Ensure int based PHP enum works

Author: spawnia

tests/Type/PhpEnumType/IntPhpEnum.php

@@ -0,0 +1,8 @@
+<?php declare(strict_types=1);
+
+namespace GraphQL\Tests\Type\PhpEnumType;
+
+enum IntPhpEnum: int
+{
+    case A = 1;
+}

tests/Type/PhpEnumTypeTest.php

@@ -7,6 +7,7 @@
 use GraphQL\GraphQL;
 use GraphQL\Tests\TestCaseBase;
 use GraphQL\Tests\Type\PhpEnumType\DocBlockPhpEnum;
+use GraphQL\Tests\Type\PhpEnumType\IntPhpEnum;
 use GraphQL\Tests\Type\PhpEnumType\MultipleDeprecationsPhpEnum;
 use GraphQL\Tests\Type\PhpEnumType\MultipleDescriptionsCasePhpEnum;
 use GraphQL\Tests\Type\PhpEnumType\MultipleDescriptionsPhpEnum;
@@ -31,42 +32,45 @@ protected function setUp(): void
     public function testConstructEnumTypeFromPhpEnum(): void
     {
         $enumType = new PhpEnumType(PhpEnum::class);
-        self::assertSame(
-            <<<'GRAPHQL'
+        self::assertSame(<<<'GRAPHQL'
 "foo"
 enum PhpEnum {
   "bar"
   A
   B @deprecated
   C @deprecated(reason: "baz")
 }
-GRAPHQL,
-            SchemaPrinter::printType($enumType)
-        );
+GRAPHQL, SchemaPrinter::printType($enumType));
+    }
+
+    public function testConstructEnumTypeFromIntPhpEnum(): void
+    {
+        $enumType = new PhpEnumType(IntPhpEnum::class);
+        self::assertSame(<<<'GRAPHQL'
+enum IntPhpEnum {
+  A
+}
+GRAPHQL, SchemaPrinter::printType($enumType));
     }
 
     public function testConstructEnumTypeFromPhpEnumWithCustomName(): void
     {
         $enumType = new PhpEnumType(PhpEnum::class, 'CustomNamedPhpEnum');
-        self::assertSame(
-            <<<'GRAPHQL'
+        self::assertSame(<<<'GRAPHQL'
 "foo"
 enum CustomNamedPhpEnum {
   "bar"
   A
   B @deprecated
   C @deprecated(reason: "baz")
 }
-GRAPHQL,
-            SchemaPrinter::printType($enumType)
-        );
+GRAPHQL, SchemaPrinter::printType($enumType));
     }
 
     public function testConstructEnumTypeFromPhpEnumWithDocBlockDescriptions(): void
     {
         $enumType = new PhpEnumType(DocBlockPhpEnum::class);
-        self::assertSame(
-            <<<'GRAPHQL'
+        self::assertSame(<<<'GRAPHQL'
 "foo"
 enum DocBlockPhpEnum {
   "preferred"
@@ -78,9 +82,7 @@ enum DocBlockPhpEnum {
   """
   B
 }
-GRAPHQL,
-            SchemaPrinter::printType($enumType)
-        );
+GRAPHQL, SchemaPrinter::printType($enumType));
     }
 
     public function testMultipleDescriptionsDisallowed(): void
@@ -126,14 +128,11 @@ public function testExecutesWithEnumTypeFromPhpEnum(): void
             ]),
         ]);
 
-        self::assertSame(
-            [
-                'data' => [
-                    'foo' => 'A',
-                ],
+        self::assertSame([
+            'data' => [
+                'foo' => 'A',
             ],
-            GraphQL::executeQuery($schema, '{ foo(bar: A) }')->toArray()
-        );
+        ], GraphQL::executeQuery($schema, '{ foo(bar: A) }')->toArray());
     }
 
     public function testFailsToSerializeNonEnum(): void