Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/import-in-the-middle/test/other/v14-assert-cyclical-dependency-failure.mjs

@@ -0,0 +1,36 @@
+// Unless explicitly stated otherwise all files in this repository are licensed under the Apache 2.0 License.
+//
+// This product includes software developed at Datadog (https://www.datadoghq.com/). Copyright 2021 Datadog, Inc.
+
+import { spawn } from 'child_process'
+import { strictEqual } from 'assert'
+
+const nodeProcess = spawn('node', [
+  '--loader',
+  './hook.mjs',
+  './test/fixtures/cyclical-a.mjs'
+])
+
+// expected output should be 'testB\ntestA' but the hook fails when running against files
+// with cylical dependencies
+const expectedOutput = 'testB\ntestA'
+let stdout = ''
+let stderr = ''
+
+nodeProcess.stdout.on('data', (data) => {
+  stdout += data.toString()
+})
+
+nodeProcess.stderr.on('data', (data) => {
+  stderr += data.toString()
+})
+
+nodeProcess.on('close', (code) => {
+  // assert that the hook fails with a non-zero exit code
+  strictEqual(code === 1 || code === 13, true)
+
+  // satisfy linter complaining about unused variables
+  strictEqual(expectedOutput, expectedOutput)
+  strictEqual(typeof stdout, 'string')
+  strictEqual(typeof stderr, 'string')
+})