use jest instead of ci test

.github/workflows/ci.yml

@@ -31,39 +31,3 @@ jobs:
         with:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}
-  e2e-legacy-config:
-    name: E2E Legacy Config
-    runs-on: ubuntu-latest
-    steps:
-      - uses: tatethurston/github-actions/build@main
-      - name: pnpm eslint
-        run: |
-          cd packages/legacy-config
-          output=$(pnpm eslint index.jsx || true)
-          echo "$output"
-
-          expected="Class component should be written as a function  react-prefer-function-component/react-prefer-function-component"
-          if [[ "$output" != *"$expected"* ]]; then
-            echo "❌ Fail"
-            exit 1
-          else
-            echo "✅ Pass"
-          fi
-  e2e-flat-config:
-    name: E2E Flat Config
-    runs-on: ubuntu-latest
-    steps:
-      - uses: tatethurston/github-actions/build@main
-      - name: pnpm eslint
-        run: |
-          cd packages/flat-config
-          output=$(pnpm eslint index.jsx || true)
-          echo "$output"
-
-          expected="Class component should be written as a function  react-prefer-function-component/react-prefer-function-component"
-          if [[ "$output" != *"$expected"* ]]; then
-            echo "❌ Fail"
-            exit 1
-          else
-            echo "✅ Pass"
-          fi

README.md

@@ -79,10 +79,17 @@ export default [
 
 ### ESLint Legacy Configuration
 
-`.eslintrc` configuration:
+`.eslintrc.js` configuration:
 
 ```js
 module.exports = {
+  parserOptions: {
+    ecmaVersion: "latest",
+    sourceType: "module",
+    ecmaFeatures: {
+      jsx: true,
+    },
+  },
   extends: ["plugin:react-prefer-function-component/recommended"],
 };
 ```

examples/custom-config/package.json

@@ -1,7 +1,7 @@
 {
+  "name": "example-custom-config",
   "version": "1.0.0",
   "description": "",
-  "name": "test",
   "scripts": {
     "lint": "eslint *.jsx"
   },

examples/flat-config/package.json

@@ -2,7 +2,7 @@
   "version": "1.0.0",
   "type": "module",
   "description": "",
-  "name": "flat-config",
+  "name": "examples-flat-config",
   "scripts": {
     "lint": "eslint ."
   },

examples/recommended-config/package.json

@@ -1,7 +1,7 @@
 {
+  "name": "recommended-config",
   "version": "1.0.0",
   "description": "",
-  "name": "test",
   "scripts": {
     "lint": "eslint *.jsx"
   },

jest.config.mjs

@@ -2,6 +2,7 @@
 export default {
   clearMocks: true,
   coverageDirectory: "coverage",
+  prettierPath: null,
   testEnvironment: "node",
   // TS ESM imports are referenced with .js extensions, but jest will fail to find
   // the uncompiled file because it ends with .ts and is looking for .js.

packages/flat-config/test.ts

@@ -0,0 +1,28 @@
+import { spawnSync } from "child_process";
+
+function run(cmd: string) {
+  return spawnSync(cmd, { shell: true, encoding: "utf8" });
+}
+
+function removeAbsolutePathToEslintFile(str: string): string {
+  return str.replace(__dirname, "");
+}
+
+describe("flat config", () => {
+  beforeAll(() => process.chdir(__dirname));
+
+  it("flags errors", () => {
+    const result = run("pnpm eslint index.jsx");
+    expect(removeAbsolutePathToEslintFile(result.stdout))
+      .toMatchInlineSnapshot(`
+"
+/index.jsx
+  3:14  error  Class component should be written as a function  react-prefer-function-component/react-prefer-function-component
+
+✖ 1 problem (1 error, 0 warnings)
+
+"
+`);
+    expect(result.status).toEqual(1);
+  });
+});

packages/legacy-config/test.ts

@@ -0,0 +1,28 @@
+import { spawnSync } from "child_process";
+
+function run(cmd: string) {
+  return spawnSync(cmd, { shell: true, encoding: "utf8" });
+}
+
+function removeAbsolutePathToEslintFile(str: string): string {
+  return str.replace(__dirname, "");
+}
+
+describe("flat config", () => {
+  beforeAll(() => process.chdir(__dirname));
+
+  it("flags errors", () => {
+    const result = run("pnpm eslint index.jsx");
+    expect(removeAbsolutePathToEslintFile(result.stdout))
+      .toMatchInlineSnapshot(`
+"
+/index.jsx
+  3:14  error  Class component should be written as a function  react-prefer-function-component/react-prefer-function-component
+
+✖ 1 problem (1 error, 0 warnings)
+
+"
+`);
+    expect(result.status).toEqual(1);
+  });
+});