Add output check to jsx-curly-spacing alternative tests

Author: yannickcr

tests/lib/rules/jsx-curly-spacing.js

@@ -203,6 +203,7 @@ ruleTester.run('jsx-curly-spacing', rule, {
     parserOptions: parserOptions
   }, {
     code: '<App foo={bar} />;',
+    output: '<App foo={ bar } />;',
     options: ['always', {alternative: true}],
     errors: [{
       message: 'A space is required after \'{\''
@@ -212,20 +213,23 @@ ruleTester.run('jsx-curly-spacing', rule, {
     parserOptions: parserOptions
   }, {
     code: '<App foo={ bar} />;',
+    output: '<App foo={ bar } />;',
     options: ['always', {alternative: true}],
     errors: [{
       message: 'A space is required before \'}\''
     }],
     parserOptions: parserOptions
   }, {
     code: '<App foo={bar } />;',
+    output: '<App foo={ bar } />;',
     options: ['always', {alternative: true}],
     errors: [{
       message: 'A space is required after \'{\''
     }],
     parserOptions: parserOptions
   }, {
     code: '<App foo={ {bar: true, baz: true} } />;',
+    output: '<App foo={{ bar: true, baz: true }} />;',
     options: ['always', {alternative: true}],
     errors: [{
       message: 'There should be no space after \'{\''