Add test case to reproduce

Author: kuy

examples/content/app.js

@@ -38,16 +38,17 @@ class App extends Component {
         <h1>Content Example</h1>
 
         <p>
-          If you provide a <Origin className="target custom" content="This is a custom content.">custom</Origin> content of tooltip via props,
-          it will be used instead of a <Origin className="target default">default</Origin> content of Tooltip component.
+          If you provide a <Origin className="target custom" content="This is a custom content.">custom</Origin> content via Origin component's prop,
+          it will overwrite a <Origin className="target default">default</Origin> content of Tooltip component.
         </p>
 
         <p>
           What time is it <Origin className="target" place="right" onHover={this.handleHover} onLeave={this.handleLeave}>now</Origin>?
         </p>
 
         <Tooltip>
-          This is a default content.
+          This is a default content.<br />
+          It's a second line.
         </Tooltip>
       </div>
     );

tests/feature/content.js

@@ -38,7 +38,7 @@ describe('Content Example', () => {
 
       const tooltip = firstComponent(tree, Tooltip.WrappedComponent).refs.tooltip;
       assert(getStyleValue(tooltip, 'visibility') === 'visible');
-      assert(tooltip.innerText === 'This is a default content.\n', 'should be default content');
+      assert(tooltip.innerText === "This is a default content.\nIt's a second line.\n", 'should be default content');
     });
   });
 
@@ -52,6 +52,25 @@ describe('Content Example', () => {
       assert(getStyleValue(tooltip, 'visibility') === 'visible');
       assert(tooltip.innerText === 'This is a custom content.\n', 'should be custom content');
     });
+
+    it('should be resized', () => {
+      // Mouseover on custom
+      const custom = firstComponent(tree, Origin.WrappedComponent, { className: 'target custom' }).refs.wrapper;
+      TestUtils.Simulate.mouseEnter(custom);
+
+      const tooltip = firstComponent(tree, Tooltip.WrappedComponent).refs.tooltip;
+      const customPos = position(tooltip);
+      TestUtils.Simulate.mouseLeave(custom);
+
+      // Mouseover on default
+      const origin = firstComponent(tree, Origin.WrappedComponent, { className: 'target default' }).refs.wrapper;
+      TestUtils.Simulate.mouseEnter(origin);
+
+      const defaultPos = position(tooltip);
+      TestUtils.Simulate.mouseLeave(origin);
+ 
+      assert(customPos.height < defaultPos.height, "default's height is higher than custom's height");
+    });
   });
 
   describe('continuous updating content', () => {