assertFalse(elementsEqual(b.iterator(), a.iterator()));

    // Different lengths.
    a = asList(4, 8, 15, 16, 23);
    b = asList(4, 8, 15, 16, 23, 42);
    assertFalse(elementsEqual(a.iterator(), b.iterator()));
    assertFalse(elementsEqual(b.iterator(), a.iterator()));

    // Different lengths, one is empty.
    a = emptySet();
    b = asList(4, 8, 15, 16, 23, 42);

    assertFalse(elementsEqual(b.iterator(), a.iterator()));

    // Different lengths.
    a = asList(4, 8, 15, 16, 23);
    b = asList(4, 8, 15, 16, 23, 42);
    assertFalse(elementsEqual(a.iterator(), b.iterator()));
    assertFalse(elementsEqual(b.iterator(), a.iterator()));

    // Different lengths, one is empty.
    a = emptySet();
    b = asList(4, 8, 15, 16, 23, 42);

		}
		rec := httptest.NewRecorder()
		apiRouter.ServeHTTP(rec, req)
		checkRespErr(rec, http.StatusOK)
	} else {
		// Multipart upload - each part is a new DummyDataGen
		// (so the part lengths are required to verify the
		// object when reading).

		// Initiate mp upload
		reqI, err := newTestSignedRequestV4(http.MethodPost, getNewMultipartURL("", bucketName, objectName),