@Test
  public void testCreateAndGetPet() throws Exception {
    Pet pet = createRandomPet();
    api.addPet(pet);

    Pet fetched = api.getPetById(pet.getId());
    assertNotNull(fetched);
    assertEquals(pet.getId(), fetched.getId());
    assertNotNull(fetched.getCategory());
    assertEquals(fetched.getCategory().getName(), pet.getCategory().getName());
  }
  @Test
  public void testUpdatePet() throws Exception {
    Pet pet = createRandomPet();
    pet.setName("programmer");

    api.updatePet(pet);

    Pet fetched = api.getPetById(pet.getId());
    assertNotNull(fetched);
    assertEquals(pet.getId(), fetched.getId());
    assertNotNull(fetched.getCategory());
    assertEquals(fetched.getCategory().getName(), pet.getCategory().getName());
  }