### Question:
DownloadStatusEvent { public String toString() { final String TAB = " "; String retValue = ""; retValue = "DownloadStatusEvent ( " + super.toString() + TAB + "_type = " + this._type + TAB + "_filename = " + this._filename + TAB + "_fileCountTotal = " + this._fileCountTotal + TAB + "_exception = " + this._exception + TAB + " )"; return retValue; } DownloadStatusEvent(DownloadEventType type); DownloadEventType getType(); String getFilename(); void setFilename(String _filename); Exception getException(); void setException(Exception _exception); int getFileCountTotal(); void setFileCountTotal(int countTotal); String toString();  }### Answer:
@Test public void testToString() { classUnderTest = new DownloadStatusEvent(DOWNLOAD_STARTED); Assert.assertNotNull(classUnderTest.toString()); }