test: move edge cases into different file

test/parallel/test-dotenv-edge-cases.js

@@ -0,0 +1,36 @@
+'use strict';
+
+const common = require('../common');
+const assert = require('node:assert');
+const { describe, it } = require('node:test');
+
+const validEnvFilePath = '../fixtures/dotenv/valid.env';
+const relativePath = '../fixtures/dotenv/node-options.env';
+
+describe('.env supports edge cases', () => {
+
+  it('should use the last --env-file declaration', async () => {
+    const code = `
+      require('assert').strictEqual(process.env.BASIC, 'basic');
+    `.trim();
+    const child = await common.spawnPromisified(process.execPath,
+                                                [ `--env-file=${relativePath}`, `--env-file=${validEnvFilePath}`, '--eval', code ], {
+                                                  cwd: __dirname,
+                                                });
+    assert.strictEqual(child.stderr, '');
+    assert.strictEqual(child.code, 0);
+  });
+
+  it('should handle unexisting .env file', async () => {
+    const code = `
+      require('assert').strictEqual(1, 1)
+    `.trim();
+    const child = await common.spawnPromisified(process.execPath,
+                                                [ '--env-file=.env', '--eval', code ], {
+                                                  cwd: __dirname,
+                                                });
+    assert.strictEqual(child.stderr, '');
+    assert.strictEqual(child.code, 0);
+  });
+
+});

test/parallel/test-dotenv-node-options.mjs → test/parallel/test-dotenv-node-options.js

@@ -1,15 +1,15 @@
-import * as common from '../common/index.mjs';
-import assert from 'node:assert';
-import { describe, it } from 'node:test';
-import { fileURLToPath } from 'node:url';
+'use strict';
+
+const common = require('../common');
+const assert = require('node:assert');
+const { describe, it } = require('node:test');
 
 if (!common.isMainThread) {
   common.skip(
-    'test-esm-resolve-type.mjs: process.chdir is not available in Workers'
+    'test-dotenv-node-options.mjs: NODE_OPTIONS is not available in Workers'
   );
 }
 
-const __dirname = fileURLToPath(new URL('.', import.meta.url));
 const relativePath = '../fixtures/dotenv/node-options.env';
 
 describe('.env supports NODE_OPTIONS', () => {