assertEquals("AA", natTable.getActiveCellEditor().getCanonicalValue());
assertFalse(natTable.getActiveCellEditor().validateCanonicalValue(
natTable.getActiveCellEditor().getCanonicalValue()));
// Press tab
textControl.notifyListeners(SWT.Traverse, SWTUtils.keyEvent(SWT.TAB));
assertEquals(textControl, natTable.getActiveCellEditor()
.getEditorControl());
assertEquals("AA", natTable.getActiveCellEditor().getCanonicalValue());
assertEquals(textControl, ActiveCellEditorRegistry
.getActiveCellEditor().getEditorControl());