[Tests] add passing test, fixed in #3070.

Ref: typescript-eslint/typescript-eslint#2985

Author: karlhorky

tests/lib/rules/jsx-uses-vars.js

@@ -215,6 +215,19 @@ ruleTester.run('no-unused-vars', ruleNoUnusedVars, {
         React.render(<lowercase />);
       `,
       errors: [{message: '\'lowercase\' is defined but never used.'}]
+    }, {
+      code: `
+        /* eslint jsx-uses-vars: 1 */
+        function Greetings(div) {
+          return <div />;
+        }
+        Greetings();
+      `,
+      errors: [{
+        message: '\'div\' is defined but never used.',
+        line: 3
+      }],
+      parser: parsers.BABEL_ESLINT
     }
   ]
 });