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

node_modules/@anthropic-ai/sdk/_shims/MultipartBody.js

@@ -0,0 +1,16 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MultipartBody = void 0;
+/**
+ * Disclaimer: modules in _shims aren't intended to be imported by SDK users.
+ */
+class MultipartBody {
+    constructor(body) {
+        this.body = body;
+    }
+    get [Symbol.toStringTag]() {
+        return 'MultipartBody';
+    }
+}
+exports.MultipartBody = MultipartBody;
+//# sourceMappingURL=MultipartBody.js.map