test: setup cases

Author: fernandopasik

tests/files/with-typescript-dev-dependencies/package.json

@@ -0,0 +1,5 @@
+{
+  "devDependencies": {
+    "type-fest": "0.15.1"
+  }
+}

tests/src/rules/no-extraneous-dependencies.js

@@ -1,4 +1,4 @@
-import { test } from '../utils'
+import { test, getTSParsers } from '../utils'
 import * as path from 'path'
 import * as fs from 'fs'
 
@@ -17,6 +17,7 @@ const packageFileWithSyntaxErrorMessage = (() => {
   }
 })()
 const packageDirWithFlowTyped = path.join(__dirname, '../../files/with-flow-typed')
+const packageDirWithTypescriptDevDependencies = path.join(__dirname, '../../files/with-typescript-dev-dependencies')
 const packageDirMonoRepoRoot = path.join(__dirname, '../../files/monorepo')
 const packageDirMonoRepoWithNested = path.join(__dirname, '../../files/monorepo/packages/nested-package')
 const packageDirWithEmpty = path.join(__dirname, '../../files/empty')
@@ -312,3 +313,35 @@ ruleTester.run('no-extraneous-dependencies', rule, {
     }),
   ],
 })
+
+describe('TypeScript', function () {
+  getTSParsers().forEach((parser) => {
+    const parserConfig = {
+      parser: parser,
+      settings: {
+        'import/parsers': { [parser]: ['.ts'] },
+        'import/resolver': { 'eslint-import-resolver-typescript': true },
+      },
+    }
+
+    ruleTester.run('no-extraneous-dependencies', rule, {
+      valid: [
+        test(Object.assign({
+          code: 'import type { PackageJson } from "type-fest";',
+          filename: path.join(packageDirWithTypescriptDevDependencies, 'file.ts'),
+          options: [{packageDir: packageDirWithTypescriptDevDependencies, devDependencies: false }],
+        }, parserConfig)),
+      ],
+      invalid: [
+        test(Object.assign({
+          code: 'import { PackageJson } from "type-fest";',
+          filename: path.join(packageDirWithTypescriptDevDependencies, 'file.ts'),
+          options: [{packageDir: packageDirWithTypescriptDevDependencies, devDependencies: false }],
+          errors: [{
+            message: "'type-fest' should be listed in the project's dependencies, not devDependencies.",
+          }],
+        }, parserConfig)),
+      ],
+    })
+  })
+})