### Question:
ProgressCheckAliasFacade implements SilenceableCheck { @Override public void startedScan() { wrapped.startedScan(); } ProgressCheckAliasFacade(final @NotNull ProgressCheck wrapped,
                             final @Nullable String alias); @Override String getCheckName(); @Override @Nullable String getResourceBundleBaseName(); @Override void setResourceBundle(final ResourceBundle resourceBundle); @Override Collection<Violation> getReportedViolations(); @Override void startedScan(); @Override void setSilenced(final boolean silenced); @Override void simulateSling(final SlingSimulator slingSimulator, final Set<String> runModes); @Override void identifyPackage(final PackageId packageId, final File file); @Override void readManifest(final PackageId packageId, final Manifest manifest); @Override void beforeExtract(final PackageId packageId, final Session inspectSession,
                              final PackageProperties packageProperties, final MetaInf metaInf,
                              final List<PackageId> subpackages); @Override void importedPath(final PackageId packageId, final String path, final Node node,
                             final PathAction action); @Override void deletedPath(final PackageId packageId, final String path, final Session inspectSession); @Override void afterExtract(final PackageId packageId, final Session inspectSession); @Override void identifySubpackage(final PackageId packageId, final PackageId parentId); @Override void beforeSlingInstall(final PackageId scanPackageId,
                                   final SlingInstallable slingInstallable,
                                   final Session inspectSession); @Override void identifyEmbeddedPackage(final PackageId packageId,
                                        final PackageId parentId,
                                        final EmbeddedPackageInstallable slingInstallable); @Override void appliedRepoInitScripts(final PackageId scanPackageId,
                                       final List<String> scripts,
                                       final SlingInstallable slingInstallable,
                                       final Session inspectSession); @Override void afterScanPackage(final PackageId scanPackageId, final Session inspectSession); @Override void finishedScan();  }### Answer:
@Test public void testStartedScan() { final CompletableFuture<Boolean> didIt = new CompletableFuture<>(); final ProgressCheck delegate = mock(ProgressCheck.class); doAnswer(call -> didIt.complete(true)).when(delegate).startedScan(); final ProgressCheckAliasFacade alias = new ProgressCheckAliasFacade(delegate, null); alias.startedScan(); assertTrue("did it", didIt.getNow(false)); }