test: get linter#verify cases passing

Author: G-Rath

src/rules/__tests__/no-deprecated-functions.test.ts

@@ -4,7 +4,7 @@ import {
   type JestVersion,
   detectJestVersion,
 } from '../utils/detectJestVersion';
-import { FlatCompatRuleTester } from './test-utils';
+import { FlatCompatRuleTester, usingFlatConfig } from './test-utils';
 
 jest.mock('../utils/detectJestVersion');
 
@@ -159,6 +159,20 @@ describe('the rule', () => {
       expect(() => {
         const linter = new TSESLint.Linter();
 
+        /* istanbul ignore if */
+        if (usingFlatConfig()) {
+          linter.verify('jest.resetModuleRegistry()', [
+            {
+              plugins: {
+                jest: { rules: { 'no-deprecated-functions': rule } },
+              },
+              rules: { 'jest/no-deprecated-functions': 'error' },
+            },
+          ]);
+
+          return;
+        }
+
         linter.defineRule('no-deprecated-functions', rule);
 
         linter.verify('jest.resetModuleRegistry()', {

src/rules/__tests__/no-large-snapshots.test.ts

@@ -1,7 +1,11 @@
 import { TSESLint } from '@typescript-eslint/utils';
 import dedent from 'dedent';
 import rule from '../no-large-snapshots';
-import { FlatCompatRuleTester, espreeParser } from './test-utils';
+import {
+  FlatCompatRuleTester,
+  espreeParser,
+  usingFlatConfig,
+} from './test-utils';
 
 const ruleTester = new FlatCompatRuleTester({
   parser: espreeParser,
@@ -267,6 +271,34 @@ describe('no-large-snapshots', () => {
       expect(() => {
         const linter = new TSESLint.Linter();
 
+        /* istanbul ignore if */
+        if (usingFlatConfig()) {
+          linter.verify(
+            'console.log()',
+            [
+              {
+                files: ['*.snap'],
+                plugins: {
+                  jest: { rules: { 'no-large-snapshots': rule } },
+                },
+                rules: {
+                  'jest/no-large-snapshots': [
+                    'error',
+                    {
+                      allowedSnapshots: {
+                        'mock-component.jsx.snap': [/a big component \d+/u],
+                      },
+                    },
+                  ],
+                },
+              },
+            ],
+            'mock-component.jsx.snap',
+          );
+
+          return;
+        }
+
         linter.defineRule('no-large-snapshots', rule);
 
         linter.verify(

src/rules/__tests__/test-utils.ts

@@ -8,6 +8,8 @@ const eslintRequire = createRequire(require.resolve('eslint'));
 
 export const espreeParser = eslintRequire.resolve('espree');
 
+export const usingFlatConfig = () => semver.major(eslintVersion) >= 9;
+
 export class FlatCompatRuleTester extends TSESLint.RuleTester {
   public constructor(testerConfig?: TSESLint.RuleTesterConfig) {
     super(FlatCompatRuleTester._flatCompat(testerConfig));
@@ -35,11 +37,7 @@ export class FlatCompatRuleTester extends TSESLint.RuleTester {
       | TSESLint.ValidTestCase<unknown[]>
       | TSESLint.InvalidTestCase<string, unknown[]>,
   >(config: T): T {
-    if (
-      !config ||
-      semver.major(eslintVersion) < 9 ||
-      typeof config === 'string'
-    ) {
+    if (!config || !usingFlatConfig() || typeof config === 'string') {
       return config;
     }