sidePanel.splitter().assertExpressionEquals("offsetWidth", 12);
sidePanel.splitter().assertExpressionEquals("offsetHeight", 196);
sidePanel.panel().assertExpressionEquals("offsetWidth", 80);
sidePanel.panel().assertExpressionEquals("offsetHeight", 196);
sidePanel.caption().assertExpressionEquals("offsetWidth", 68);
sidePanel.caption().assertExpressionEquals("offsetHeight", 28);
sidePanel.content().assertExpressionEquals("offsetWidth", 68);
sidePanel.content().assertExpressionEquals("offsetHeight", 152);
/* test SidePanel in collapsed mode */
sidePanel.splitter().mouseDown();