test(aws-client-api-test): assert client config custody in integ test

Author: kuhe

private/aws-client-api-test/src/client-interface-tests/config/client-config-custody.spec.ts

@@ -0,0 +1,44 @@
+import { describe, test as it, expect } from "vitest";
+import { S3 } from "@aws-sdk/client-s3";
+import { S3Control } from "@aws-sdk/client-s3-control";
+import { DynamoDB } from "@aws-sdk/client-dynamodb";
+import { EC2 } from "@aws-sdk/client-ec2";
+import { SQS } from "@aws-sdk/client-sqs";
+import { Glacier } from "@aws-sdk/client-glacier";
+import { STS } from "@aws-sdk/client-sts";
+import { TranscribeStreaming } from "@aws-sdk/client-transcribe-streaming";
+import { Route53 } from "@aws-sdk/client-route-53";
+import { RDS } from "@aws-sdk/client-rds";
+
+describe("client config object custody", () => {
+  it("should maintain a consistent object reference throughout the client resolver stack lifecycle (the constructor)", () => {
+    const clients = [
+      new S3(),
+      new S3Control(),
+      new DynamoDB(),
+      new EC2(),
+      new Glacier(),
+      new RDS(),
+      new Route53(),
+      new SQS(),
+      new STS(),
+      new TranscribeStreaming(),
+    ];
+    for (const client of clients) {
+      try {
+        expect(Object.keys(client.config)).toEqual(Object.keys(client.initConfig ?? {}));
+      } catch (e) {
+        throw new Error(`MismatchedObjectKeys - config object custody error for ${client.constructor.name}`, {
+          cause: e,
+        });
+      }
+
+      // reference equality assertion
+      try {
+        expect(client.config).toBe(client.initConfig);
+      } catch (e) {
+        throw new Error(`ReferenceEqualityError - config object custody error for ${client.constructor.name}`);
+      }
+    }
+  });
+});