diff --git a/typescript/__tests__/testSave.ts b/typescript/__tests__/testSave.ts
new file mode 100644
index 000000000..929a43361
--- /dev/null
+++ b/typescript/__tests__/testSave.ts
@@ -0,0 +1,29 @@
+// FileWriter.test.ts
+import * as fs from "fs";
+import * as path from "path";
+import { tmpdir } from "os";
+import { AIConfigRuntime } from "../lib/config";
+
+describe("AIConfigRuntime save()", () => {
+  it("saves the config and checks if the config json doesn't have key filePath", () => {
+    const tmpDir = tmpdir(); // Get the system's temporary directory
+    const newFileName = "modified_config.json";
+    const tempFilePath = path.join(tmpDir, newFileName);
+
+    const filePath = path.join(
+      __dirname,
+      "samples",
+      "basic_chatgpt_query_config.json"
+    );
+
+    const aiconfig = AIConfigRuntime.load(filePath);
+    // Modify and save the configuration
+    aiconfig.save(tempFilePath);
+
+    // Open and parse the saved JSON file
+    const savedConfig = JSON.parse(fs.readFileSync(tempFilePath, "utf8"));
+
+    // Perform your assertions
+    expect(savedConfig.hasOwnProperty("filePath")).toBe(false);
+  });
+});