@Test
public void whenMakingSafeCopyPNGExpectFileCopyHasBeenCreated()
        throws IOException {

    String safeCopyName = assetsHelper.makeSafeCopy(pngFile.getAbsolutePath());
    addToTestFiles(safeCopyName);
    assertThat(new File(pathToInternalStorage, safeCopyName).exists(), is(true));
}