Add a few more test cases

* Make sure `coerce` doesn't update original value
* Check against union and intersection types
* Differentiate between v1 and v2

composer.json

@@ -14,7 +14,8 @@
     },
     "require-dev": {
         "azjezz/psl": "^1.6||^2.0",
-		"nikic/php-parser": "^4.14.0",
+        "composer/semver": "^3.3",
+        "nikic/php-parser": "^4.14.0",
         "php-parallel-lint/php-parallel-lint": "^1.2",
         "phpstan/phpstan-phpunit": "^1.0",
         "phpstan/phpstan-strict-rules": "^1.0",

tests/Type/PslTypeSpecifyingExtensionTest.php

@@ -2,6 +2,8 @@
 
 namespace Psl\PHPStan\Type;
 
+use Composer\InstalledVersions;
+use Composer\Semver\VersionParser;
 use PHPStan\Testing\TypeInferenceTestCase;
 
 class PslTypeSpecifyingExtensionTest extends TypeInferenceTestCase
@@ -15,6 +17,11 @@ public function dataFileAsserts(): iterable
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/coerce.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/assert.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/matches.php');
+		if (InstalledVersions::satisfies(new VersionParser(), 'azjezz/psl', '<2.0.0')) {
+			yield from $this->gatherAssertTypes(__DIR__ . '/data/complexTypev1.php');
+		} else {
+			yield from $this->gatherAssertTypes(__DIR__ . '/data/complexTypev2.php');
+		}
 	}
 
 	/**

tests/Type/data/coerce.php

@@ -23,16 +23,18 @@ public function coerceShape(array $input): void
             ])),
         ]);
 
-        $input = $specification->coerce($input);
+        $output = $specification->coerce($input);
 
-        assertType('array{name: string, age: int, location?: array{city: string, state: string, country: string}}', $input);
+        assertType('array{name: string, age: int, location?: array{city: string, state: string, country: string}}', $output);
+        assertType('array', $input);
     }
 
 	public function coerceInt($i): void
 	{
 		$spec = Type\int();
 		$coerced = $spec->coerce($i);
 		assertType('int', $coerced);
+		assertType('mixed', $i);
 	}
 
 	public function coerceWrongShape(): void

tests/Type/data/complexTypev1.php

@@ -0,0 +1,32 @@
+<?php declare(strict_types=1);
+
+namespace PslComplexV1Test;
+
+use Psl\Type;
+
+use function PHPStan\Testing\assertType;
+
+interface Bike {}
+interface Plane {}
+
+/**
+ * For PSL < 2.0.0
+ */
+class ComplexTypesV1
+{
+
+	public function coerceShapeWithComplexTypes($input): void
+	{
+		$intNullOrString = Type\union(Type\int(), Type\nullable(Type\string()));
+		$bikeAndPlane = Type\intersection(Type\object(Bike::class), Type\object(Plane::class));
+		$shape = Type\shape([
+			'name_or_length' => $intNullOrString,
+			'transportation' => $bikeAndPlane,
+			'something' => Type\union($intNullOrString, $bikeAndPlane)
+		]);
+
+		$output = $shape->coerce($input);
+		assertType('array{name_or_length: int|string|null, transportation: PslComplexV1Test\Bike&PslComplexV1Test\Plane, something: int|(PslComplexV1Test\Bike&PslComplexV1Test\Plane)|string|null}', $output);
+	}
+
+}

tests/Type/data/complexTypev2.php

@@ -0,0 +1,28 @@
+<?php declare(strict_types=1);
+
+namespace PslComplexV2Test;
+
+use Psl\Type;
+
+use function PHPStan\Testing\assertType;
+
+
+/**
+ * For PSL >= 2.0.0
+ */
+class ComplexTypesV2
+{
+	public function coerceShapeWithComplexTypes($input): void
+	{
+		$intNullOrString = Type\union(Type\int(), Type\nullable(Type\string()));
+		$bikeAndPlane = Type\intersection(Type\instance_of(Bike::class), Type\instance_of(Plane::class));
+		$shape = Type\shape([
+			'name_or_length' => $intNullOrString,
+			'transportation' => $bikeAndPlane,
+			'something' => Type\union($intNullOrString, $bikeAndPlane)
+		]);
+
+		$output = $shape->coerce($input);
+		assertType('array{name_or_length: int|string|null, transportation: PslComplexV2Test\Bike&PslComplexV2Test\Plane, something: int|(PslComplexV2Test\Bike&PslComplexV2Test\Plane)|string|null}', $output);
+	}
+}