add tests/helpers/getRuleDefiner.js

Author: mdjermanovic

tests/helpers/getRuleDefiner.js

@@ -0,0 +1,11 @@
+'use strict';
+
+const eslint = require('eslint');
+
+// `ruleTester` is a RuleTester instance
+const getRuleDefiner = (ruleTester) => (typeof Symbol !== 'undefined' && Symbol.for && ruleTester[Symbol.for('react.RuleTester.RuleDefiner')])
+    || ruleTester.linter
+    || eslint.linter
+    || eslint.Linter;
+
+module.exports = getRuleDefiner;

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

@@ -9,10 +9,10 @@
 // Requirements
 // -----------------------------------------------------------------------------
 
-const eslint = require('eslint');
 const rule = require('../../helpers/getESLintCoreRule')('no-unused-vars');
 
 const RuleTester = require('../../helpers/ruleTester');
+const getRuleDefiner = require('../../helpers/getRuleDefiner');
 
 const parsers = require('../../helpers/parsers');
 
@@ -35,7 +35,7 @@ const settings = {
 // -----------------------------------------------------------------------------
 
 const ruleTester = new RuleTester({ parserOptions });
-const ruleDefiner = ruleTester[Symbol.for('react.RuleTester.RuleDefiner')] || ruleTester.linter || eslint.linter || eslint.Linter;
+const ruleDefiner = getRuleDefiner(ruleTester);
 ruleDefiner.defineRule('react/jsx-uses-react', require('../../../lib/rules/jsx-uses-react'));
 
 ruleTester.run('no-unused-vars', rule, {

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

@@ -9,11 +9,11 @@
 // Requirements
 // -----------------------------------------------------------------------------
 
-const eslint = require('eslint');
 const ruleNoUnusedVars = require('../../helpers/getESLintCoreRule')('no-unused-vars');
 const rulePreferConst = require('../../helpers/getESLintCoreRule')('prefer-const');
 
 const RuleTester = require('../../helpers/ruleTester');
+const getRuleDefiner = require('../../helpers/getRuleDefiner');
 
 const parsers = require('../../helpers/parsers');
 
@@ -30,7 +30,7 @@ const parserOptions = {
 // -----------------------------------------------------------------------------
 
 const ruleTester = new RuleTester({ parserOptions });
-const ruleDefiner = ruleTester[Symbol.for('react.RuleTester.RuleDefiner')] || ruleTester.linter || eslint.linter || eslint.Linter;
+const ruleDefiner = getRuleDefiner(ruleTester);
 ruleDefiner.defineRule('react/jsx-uses-vars', require('../../../lib/rules/jsx-uses-vars'));
 
 ruleTester.run('no-unused-vars', ruleNoUnusedVars, {