@Test
public void delete() throws IOException {

	final String sign = "file_delete";
	FilePath file = new FilePath(new Path(folder.getRoot().toPath().toString(), sign));
	writeFile(file, sign);
	Assert.assertTrue(file.getFileSystem().exists(file.getPathStr()));
	file.getFileSystem().delete(file.getPathStr(), false);
	Assert.assertFalse(file.getFileSystem().exists(file.getPathStr()));
}