t.Fatalf("Test %s: Failed to fetch the copied object: <ERROR> %s", instanceType, err)
	}
	r.Close()
	if !bytes.Equal(buf.Bytes(), bytesData[0].byteData) {
		t.Fatalf("Test: %s returned data is not expected corruption detected:", instanceType)
	}
}

// Wrapper for calling Copy Object Part API handler tests for both Erasure multiple disks and single node setup.
func TestAPICopyObjectPartHandler(t *testing.T) {