### Question:
MenuData { public void setMenuPath(String[] newPath) { if (newPath == null || newPath.length == 0) { throw new IllegalArgumentException("Menu path cannot be null or empty"); } MenuData oldData = cloneData(); menuPath = processMenuPath(newPath); mnemonic = getMnemonic(newPath); firePropertyChanged(oldData); } MenuData(String[] menuPath);  MenuData(String[] menuPath, String group);  MenuData(String[] menuPath, Icon icon);  MenuData(String[] menuPath, Icon icon, String menuGroup);  MenuData(String[] menuPath, Icon icon, String menuGroup, int mnemonic,
			String menuSubGroup);  MenuData(MenuData menuData); MenuData cloneData(); String[] getMenuPath(); String getMenuPathAsString(); int getMnemonic(); Icon getMenuIcon(); String getMenuGroup(); String getMenuSubGroup(); String getParentMenuGroup(); void setIcon(Icon newIcon); void setMenuGroup(String newGroup); void setMenuSubGroup(String newSubGroup); void setParentMenuGroup(String newParentMenuGroup); void setMenuPath(String[] newPath); void setMnemonic(Character newMnemonic); void setMenuItemName(String newMenuItemName); String getMenuItemName(); static final int NO_MNEMONIC; static final String NO_SUBGROUP; }### Answer:
@Test(expected = IllegalArgumentException.class) public void testBreakMenuPath() { MenuData menuData = new MenuData(new String[] { "One", "Two", "Three" }); menuData.setMenuPath(new String[0]); }
@Test public void testSetMenuPath() { MenuData menuData = new MenuData(new String[] { "One", "Two", "T&hree" }); assertEquals("Three", menuData.getMenuItemName()); assertEquals(menuData.getMnemonic(), 'h'); String newName = "Completely New Name"; String[] newPath = { "Four", newName }; menuData.setMenuPath(newPath); assertEquals(menuData.getMnemonic(), MenuData.NO_MNEMONIC); }