@Test
public void isFileExtensionSupported() throws Exception {

    Assert.assertEquals(true, CompressionUtil.isFileExtensionSupported("gz"));
    Assert.assertEquals(true, CompressionUtil.isFileExtensionSupported("zip"));
    Assert.assertEquals(false, CompressionUtil.isFileExtensionSupported("txt"));
    Assert.assertEquals(false, CompressionUtil.isFileExtensionSupported("gz2"));
}