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/hook/re-export-star-module.mjs

@@ -0,0 +1,17 @@
+import Hook from '../../index.js'
+import { foo } from '../fixtures/re-export-star-external.mjs'
+import { bar } from '../fixtures/sub-directory/re-export-star-external.mjs'
+import { strictEqual } from 'assert'
+
+Hook((exports, name) => {
+  if (name.endsWith('fixtures/re-export-star-external.mjs')) {
+    exports.foo = '1'
+  }
+
+  if (name.endsWith('fixtures/sub-directory/re-export-star-external.mjs')) {
+    exports.bar = '2'
+  }
+})
+
+strictEqual(foo, '1')
+strictEqual(bar, '2')