assert parameter types

Author: staabm

tests/PHPStan/Type/StringTypeTest.php

@@ -98,6 +98,8 @@ public static function dataIsSuperTypeOf(): array
 	#[DataProvider('dataIsSuperTypeOf')]
 	public function testIsSuperTypeOf(Type $stringType, Type $otherType, TrinaryLogic $expectedResult): void
 	{
+		$this->assertInstanceOf(StringType::class, $stringType);
+
 		$actualResult = $stringType->isSuperTypeOf($otherType);
 		$this->assertSame(
 			$expectedResult->describe(),
@@ -176,6 +178,8 @@ public static function dataAccepts(): iterable
 	#[DataProvider('dataAccepts')]
 	public function testAccepts(Type $stringType, Type $otherType, TrinaryLogic $expectedResult): void
 	{
+		$this->assertInstanceOf(StringType::class, $stringType);
+
 		$actualResult = $stringType->accepts($otherType, true)->result;
 		$this->assertSame(
 			$expectedResult->describe(),

tests/PHPStan/Type/UnionTypeTest.php

@@ -79,6 +79,8 @@ public static function dataIsCallable(): array
 	#[DataProvider('dataIsCallable')]
 	public function testIsCallable(Type $unionType, TrinaryLogic $expectedResult): void
 	{
+		$this->assertInstanceOf(UnionType::class, $unionType);
+
 		$actualResult = $unionType->isCallable();
 		$this->assertSame(
 			$expectedResult->describe(),
@@ -701,6 +703,8 @@ public static function dataIsScalar(): array
 	#[DataProvider('dataIsScalar')]
 	public function testIsScalar(Type $unionType, TrinaryLogic $expectedResult): void
 	{
+		$this->assertInstanceOf(UnionType::class, $unionType);
+
 		$actualResult = $unionType->isScalar();
 		$this->assertSame(
 			$expectedResult->describe(),