main repo

node_modules/eslint-plugin-jsx-a11y/__tests__/src/rules/no-onchange-test.js

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+/**
+ * @fileoverview Enforce usage of onBlur over onChange on select menus for accessibility.
+ * @author Ethan Cohen
+ */
+
+// -----------------------------------------------------------------------------
+// Requirements
+// -----------------------------------------------------------------------------
+
+import { RuleTester } from 'eslint';
+import parserOptionsMapper from '../../__util__/parserOptionsMapper';
+import parsers from '../../__util__/helpers/parsers';
+import rule from '../../../src/rules/no-onchange';
+
+// -----------------------------------------------------------------------------
+// Tests
+// -----------------------------------------------------------------------------
+
+const ruleTester = new RuleTester();
+
+const expectedError = {
+  message: 'onBlur must be used instead of onchange, unless absolutely necessary and it causes no negative consequences for keyboard only or screen reader users.',
+  type: 'JSXOpeningElement',
+};
+
+const componentsSettings = {
+  'jsx-a11y': {
+    components: {
+      CustomOption: 'option',
+      Input: 'input',
+    },
+  },
+};
+
+ruleTester.run('no-onchange', rule, {
+  valid: parsers.all([].concat(
+    { code: '<select onBlur={() => {}} />;' },
+    { code: '<select onBlur={handleOnBlur} />;' },
+    { code: '<option />;' },
+    { code: '<option onBlur={() => {}} onChange={() => {}} />;' },
+    { code: '<option {...props} />' },
+    { code: '<input onChange={() => {}} />;' },
+    { code: '<input onChange={handleOnChange} />;' },
+    { code: '<input />;' },
+    { code: '<input onChange={() => {}} onChange={() => {}} />;' },
+    { code: '<input {...props} />' },
+    { code: '<Input onChange={() => {}} />;', settings: componentsSettings },
+    { code: '<CustomOption onChange={() => {}} />' },
+  )).map(parserOptionsMapper),
+  invalid: parsers.all([].concat(
+    { code: '<select onChange={() => {}} />;', errors: [expectedError] },
+    { code: '<select onChange={handleOnChange} />;', errors: [expectedError] },
+    { code: '<option onChange={() => {}} />', errors: [expectedError] },
+    { code: '<option onChange={() => {}} {...props} />', errors: [expectedError] },
+    { code: '<CustomOption onChange={() => {}} />;', errors: [expectedError], settings: componentsSettings },
+  )).map(parserOptionsMapper),
+});