Add invalid test case

Author: jseminck

lib/rules/prop-types.js

@@ -919,7 +919,7 @@ module.exports = {
 
       TypeParameterInstantiation: function(node) {
         if (node.params && node.params[0].type === 'GenericTypeAnnotation' && node.params[0].id.name === 'Props') {
-          markPropTypesAsDeclared(node, resolveTypeAnnotation(node));
+          markPropTypesAsDeclared(node, resolveTypeAnnotation(node.params[0]));
         }
       },
 

tests/lib/rules/prop-types.js

@@ -2942,6 +2942,25 @@ ruleTester.run('prop-types', rule, {
         type: 'Identifier'
       }],
       parser: 'babel-eslint'
+    }, {
+      code: `
+        type Props = {
+          foo: string,
+        };
+
+        class Bar extends React.Component<Props> {
+          render() {
+            return <div>{this.props.bar}</div>
+          }
+        }
+      `,
+      errors: [{
+        message: '\'bar\' is missing in props validation',
+        line: 8,
+        column: 37,
+        type: 'Identifier'
+      }],
+      parser: 'babel-eslint'
     }
   ]
 });