Confirm uniontype support

Author: jaapio

tests/integration/PHP8/UnionTypesTest.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace integration\PHP8;
+
+use phpDocumentor\Reflection\File\LocalFile;
+use phpDocumentor\Reflection\Fqsen;
+use phpDocumentor\Reflection\Php\Project;
+use phpDocumentor\Reflection\Php\ProjectFactory;
+use phpDocumentor\Reflection\PseudoTypes\False_;
+use phpDocumentor\Reflection\Types\Compound;
+use phpDocumentor\Reflection\Types\Integer;
+use phpDocumentor\Reflection\Types\Mixed_;
+use phpDocumentor\Reflection\Types\Null_;
+use phpDocumentor\Reflection\Types\Object_;
+use phpDocumentor\Reflection\Types\Static_;
+use phpDocumentor\Reflection\Types\String_;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @coversNothing
+ */
+final class UnionTypesTest extends TestCase
+{
+    const FILE = __DIR__ . '/../data/PHP8/UnionTypes.php';
+    /** @var ProjectFactory */
+    private $fixture;
+
+    public function testUnionTypes() : void
+    {
+        $this->fixture = ProjectFactory::createInstance();
+
+        /** @var Project $project */
+        $project = $this->fixture->create(
+            'PHP8',
+            [
+                new LocalFile(self::FILE),
+            ]
+        );
+
+        $file = $project->getFiles()[self::FILE];
+
+        $class = $file->getClasses()['\PHP8\UnionTypes'];
+
+        self::assertEquals(new Compound([new String_(), new Null_(), new Object_(new Fqsen('\Foo\Date'))]), $class->getMethods()['\PHP8\UnionTypes::union()']->getReturnType());
+        self::assertEquals(new Compound([new Integer(), new False_()]), $class->getMethods()['\PHP8\UnionTypes::union()']->getArguments()[0]->getType());
+        self::assertEquals(new Compound([new String_(), new Null_(), new False_()]), $class->getProperties()['\PHP8\UnionTypes::$property']->getType());
+    }
+}

tests/integration/data/PHP8/UnionTypes.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PHP8;
+
+use Foo\Date;
+
+class UnionTypes
+{
+    private string|null|false $property;
+
+    public function union(int|false $test): string|null|Date
+    {
+
+    }
+}