@Test
public void getCount_withNamespace_shouldReturnOneEntity() {

    // given
    createEntityInDatastore(KIND_NAME, PROPERTY_NAME, A_NAME);
    createEntityInNamespace(A_NAMESPACE, KIND_NAME, PROPERTY_NAME, ANOTHER_NAME);
    // when
    long entityCount = entitiesService.getCount(KIND_NAME, A_NAMESPACE);
    // then
    assertEquals(1L, entityCount);
}