/**
 */
public abstract class AbstractModelInterpolatorTest {
    private Properties context;

    @BeforeEach
    public void setUp() {
        context = new Properties();
        context.put("basedir", "myBasedir");
        context.put("project.baseUri", "myBaseUri");
    }

    protected void assertProblemFree(SimpleProblemCollector collector) {
        assertEquals(0, collector.getErrors().size(), "Expected no errors");

            }
        """
        def dirInBuildDir = file("build/dir").createDir()
        file("build/dir/stale-file.txt").touch()
        def customFile = file("customFile").touch()
        def myTaskDir = file("external/output").createDir()

        when:
        succeeds("myTask")
        then:
        dirInBuildDir.assertIsEmptyDir()
        customFile.assertDoesNotExist()
        buildFile.assertExists()