587: Windows use .dll

Author: asgrim

test/integration/ComposerIntegration/ComposerIntegrationHandlerTest.php

@@ -20,6 +20,7 @@
 use Php\Pie\DependencyResolver\RequestedPackageAndVersion;
 use Php\Pie\DependencyResolver\ResolvedPackageRequest;
 use Php\Pie\Platform;
+use Php\Pie\Platform\OperatingSystem;
 use Php\Pie\Platform\TargetPhp\PhpBinaryPath;
 use Php\Pie\Platform\TargetPlatform;
 use Php\PieIntegrationTest\Command\IsolatedWorkingDirectoryTestCase;
@@ -169,7 +170,7 @@ public function testRunUninstallRemovesPackageFromPieJson(): void
 
     private function extensionBinaryPath(): string
     {
-        return $this->targetPlatform->phpBinaryPath->extensionPath() . DIRECTORY_SEPARATOR . self::EXTENSION_NAME . '.so';
+        return $this->targetPlatform->phpBinaryPath->extensionPath() . DIRECTORY_SEPARATOR . self::EXTENSION_NAME . ($this->targetPlatform->operatingSystem === OperatingSystem::Windows ? '.dll' : '.so');
     }
 
     /** @param non-empty-string $version */