Test about BetterReflection Adapter ReflectionEnum return types

These will likely need fixes on 2.0.x because
PHP-Parser now represents `null` and `false` in union types differently
and considers them namespaced names on PHP 7.x

Author: ondrejmirtes

tests/PHPStan/Analyser/nsrt/adapter-reflection-enum-return-types.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace AdapterReflectionEnumReturnTypes;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnum;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnumBackedCase;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnumUnitCase;
+use function PHPStan\Testing\assertType;
+
+function (ReflectionEnum $r, string $s): void {
+	assertType('non-empty-string|false', $r->getFileName());
+	assertType('int|false', $r->getStartLine());
+	assertType('int|false', $r->getEndLine());
+	assertType('string|false', $r->getDocComment());
+	assertType('PHPStan\BetterReflection\Reflection\Adapter\ReflectionClassConstant|false', $r->getReflectionConstant($s));
+	assertType('PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass|false', $r->getParentClass());
+	assertType('non-empty-string|false', $r->getExtensionName());
+	assertType('PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType|null', $r->getBackingType());
+};
+
+function (ReflectionEnumBackedCase $r): void {
+	assertType('string|false', $r->getDocComment());
+	assertType('PHPStan\BetterReflection\Reflection\Adapter\ReflectionIntersectionType|PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType|PHPStan\BetterReflection\Reflection\Adapter\ReflectionUnionType|null', $r->getType());
+};
+
+function (ReflectionEnumUnitCase $r): void {
+	assertType('string|false', $r->getDocComment());
+	assertType('PHPStan\BetterReflection\Reflection\Adapter\ReflectionIntersectionType|PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType|PHPStan\BetterReflection\Reflection\Adapter\ReflectionUnionType|null', $r->getType());
+};