@Test
  public void serDeTest() throws Exception {
    doSerDeTest("blob-id", Collections.emptyMap());
    doSerDeTest("blob-id", Collections.singletonMap("key-one", "value-one"));
    doSerDeTest("blob id with spaces", Collections.singletonMap("key-one", "value-one"));
    doSerDeTest("blob-id",
        Stream.of("a", "b", "c", "d with spaces").collect(Collectors.toMap(s -> s + "key", s -> s + "value")));
  }
Test {@link SignedIdSerDe}'s serialization/deserialization methods.
@throws Exception
ambry-frontend/src/test/java/com/github/ambry/frontend/SignedIdSerDeTest.java