error for I prefixed interface names

Summary: {gif:kosnw403}

Reviewed By: mweststrate

Differential Revision: D33845782

fbshipit-source-id: 2b9bd70e3b2d930e8f4cd8fe7976ac76f43b2496

desktop/eslint-plugin-flipper/src/rules/__tests__/noIPrefixInterfaces.node.ts

@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {TSESLint} from '@typescript-eslint/experimental-utils';
+import rule, {RULE_NAME} from '../noIPrefixInterfaces';
+
+const tester = new TSESLint.RuleTester({
+  parser: require.resolve('@typescript-eslint/parser'),
+  parserOptions: {
+    sourceType: 'module',
+    ecmaVersion: 2020,
+  },
+});
+
+tester.run(RULE_NAME, rule, {
+  valid: [
+    {
+      code: `interface Icon {name: string}`,
+      filename: __filename,
+    },
+    {
+      code: `interface IOSDevice {version: string}`,
+      filename: __filename,
+    },
+  ],
+  invalid: [
+    {
+      code: `interface IDevice {version: string;}`,
+      filename: __filename,
+      errors: [{messageId: 'noTsInterfacePrefixI'}],
+    },
+  ],
+});