t.Errorf("Test %d: %s: Expected the error code to be `%s`, but instead found `%s`", i+1, instanceType, testCase.errorResponse.Code, errorResponse.Code)
		}
	}

	// Test for Anonymous/unsigned http request.
	// ListBucketsHandler doesn't support bucket policies, setting the policies shouldn't make any difference.
	anonReq, err := newTestRequest(http.MethodGet, getBucketLocationURL("", bucketName), 0, nil)
	if err != nil {

		HandlerFunc(s3APIMiddleware(api.ListBucketsHandler))

	// S3 browser with signature v4 adds '//' for ListBuckets request, so rather
	// than failing with UnknownAPIRequest we simply handle it for now.
	apiRouter.Methods(http.MethodGet).Path(SlashSeparator + SlashSeparator).
		HandlerFunc(s3APIMiddleware(api.ListBucketsHandler))

	// If none of the routes match add default error handler routes