Merge pull request #4990 from oliviertassinari/icon-menu-warn-no-icon…

…-button-child

[IconMenu] Warn when not providing an IconButton to iconButtonElement

src/IconMenu/IconMenu.js

@@ -4,6 +4,7 @@ import Events from '../utils/events';
 import propTypes from '../utils/propTypes';
 import Menu from '../Menu/Menu';
 import Popover from '../Popover/Popover';
+import warning from 'warning';
 
 class IconMenu extends Component {
   static muiName = 'IconMenu';
@@ -264,6 +265,9 @@ class IconMenu extends Component {
     const mergedRootStyles = Object.assign(styles.root, style);
     const mergedMenuStyles = Object.assign(styles.menu, menuStyle);
 
+    warning(iconButtonElement.type.muiName === 'IconButton',
+      'We are expecting an <IconButton /> to be passed to the `iconButtonElement` property.');
+
     const iconButton = React.cloneElement(iconButtonElement, {
       onKeyboardFocus: onKeyboardFocus,
       iconStyle: Object.assign({}, iconStyle, iconButtonElement.props.iconStyle),