add a test case for where the outer prop name is in props validation, but the inner one is not

Author: golopot

tests/lib/rules/prop-types.js

@@ -2425,6 +2425,24 @@ ruleTester.run('prop-types', rule, {
         {message: "'foo' is missing in props validation"},
         {message: "'foo.bar' is missing in props validation"}
       ]
+    }, {
+      code: `
+        class Hello extends React.Component {
+          render() {
+            const { foo: { bar } } = this.props;
+            return <p>{bar}</p>
+          }
+        }
+
+        Hello.propTypes = {
+          foo: PropTypes.shape({
+            _: PropTypes.string,
+          })
+        }
+      `,
+      errors: [
+        {message: "'foo.bar' is missing in props validation"}
+      ]
     }, {
       code: `
         function Foo({ foo: { bar } }) {