Add tests

Author: VincentLanglet

tests/PHPStan/Analyser/nsrt/bug-12376.php

@@ -0,0 +1,66 @@
+<?php declare(strict_types = 1);
+
+namespace Bug12376;
+
+use function PHPStan\Testing\assertType;
+
+/**
+ * workaround https://github.com/phpstan/phpstan-src/pull/3853
+ *
+ * @template T of object
+ * @param class-string<T> $class
+ * @return T
+ */
+function newNonFinalInstance(string $class): object
+{
+	return new $class();
+}
+
+class Base {}
+
+class A extends Base
+{
+	/**
+	 * @template T of object
+	 * @param T $object
+	 * @return (T is static ? T : static)
+	 *
+	 * @phpstan-assert static $object
+	 */
+	public static function assertInstanceOf(object $object)
+	{
+		if (!$object instanceof static) {
+			throw new \Exception();
+		}
+
+		return $object;
+	}
+}
+
+class B extends A {}
+class C extends Base {}
+
+$o = newNonFinalInstance(\DateTime::class);
+$r = A::assertInstanceOf($o);
+assertType('*NEVER*', $o);
+assertType('A', $r);
+
+$o = newNonFinalInstance(A::class);
+$r = A::assertInstanceOf($o);
+assertType('A', $o);
+assertType('A', $r);
+
+$o = newNonFinalInstance(B::class);
+$r = A::assertInstanceOf($o);
+assertType('B', $o);
+assertType('B', $r);
+
+$o = newNonFinalInstance(C::class);
+$r = A::assertInstanceOf($o);
+assertType('*NEVER*', $o);
+assertType('A', $r);
+
+$o = newNonFinalInstance(A::class);
+$r = B::assertInstanceOf($o);
+assertType('B', $o);
+assertType('B', $r);

tests/PHPStan/Rules/Properties/AccessPropertiesRuleTest.php

@@ -1165,6 +1165,14 @@ public function testBug12645(): void
 		]);
 	}
 
+	public function testBug11289(): void
+	{
+		$this->checkThisOnly = false;
+		$this->checkUnionTypes = true;
+		$this->checkDynamicProperties = false;
+		$this->analyse([__DIR__ . '/data/bug-11289.php'], []);
+	}
+
 	public function testBug8668(): void
 	{
 		$this->checkThisOnly = false;

tests/PHPStan/Rules/Properties/data/bug-11289.php

@@ -0,0 +1,35 @@
+<?php declare(strict_types = 1);
+
+namespace Bug11289;
+
+abstract class SomeAbstractClass
+{
+	private bool $someValue = true;
+
+	/**
+	 * @phpstan-assert-if-true =static $other
+	 */
+	public function equals(?self $other): bool
+	{
+		return $other instanceof static
+			&& $this->someValue === $other->someValue;
+	}
+}
+
+class SomeConcreteClass extends SomeAbstractClass
+{
+	public function __construct(
+		private bool $someOtherValue,
+	) {}
+
+	public function equals(?SomeAbstractClass $other): bool
+	{
+		return parent::equals($other)
+			&& $this->someOtherValue === $other->someOtherValue;
+	}
+}
+
+$a = new SomeConcreteClass(true);
+$b = new SomeConcreteClass(false);
+
+var_dump($a->equals($b), $b->equals($b));