### Question:
HandlebarsEngineAdapter extends AbstractTemplatingEngineAdapter { @Override public boolean handlesFile(String filename) { return Arrays.stream(canCompileFromExtensions).anyMatch(suffix -> !suffix.equalsIgnoreCase(filename) && filename.endsWith(suffix)); }  @Override String getIdentifier(); String compileTemplate(TemplatingExecutor executor,
                                  Map<String, Object> bundle, String templateFile); @SuppressWarnings({"java:S108"}) TemplateSource findTemplate(TemplatingExecutor generator, String templateFile); @Override String[] getFileExtensions(); @Override boolean handlesFile(String filename);  }### Answer:
@Test(dataProvider = "handlesFileExpectations") public void checkHandleFiles(String input, boolean shouldHandle, String message) { HandlebarsEngineAdapter adapter = new HandlebarsEngineAdapter(); boolean handles = adapter.handlesFile(input); assertEquals(handles, shouldHandle, message); }