class TestSiteExcluderTest

class TestSiteExcluderTest extends PackageManagerKernelTestBase {
    
    /**
     * Tests that test site directories are excluded from stage operations.
     */
    public function testTestSitesExcluded() : void {
        // In this test, we want to perform the actual stage operations so that we
        // can be sure that files are staged as expected.
        $this->setSetting('package_manager_bypass_composer_stager', FALSE);
        // Ensure we have an up-to-date container.
        $this->container = $this->container
            ->get('kernel')
            ->rebuildContainer();
        $active_dir = $this->container
            ->get(PathLocator::class)
            ->getProjectRoot();
        $stage = $this->createStage();
        $stage->create();
        $stage->require([
            'ext-json:*',
        ]);
        $stage_dir = $stage->getStageDirectory();
        $excluded = [
            'sites/simpletest',
        ];
        foreach ($excluded as $path) {
            $this->assertFileExists("{$active_dir}/{$path}");
            $this->assertFileDoesNotExist("{$stage_dir}/{$path}");
        }
        $stage->apply();
        // The excluded files should still be in the active directory.
        foreach ($excluded as $path) {
            $this->assertFileExists("{$active_dir}/{$path}");
        }
    }

}