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Metadata evaluation
===================
By default, the client makes sure that references to properties, entities and
entity sets are pointing to existing elements.
The most often problem that we had to deal with was an invalid *ValueList*
annotation pointing to a non-existing property.
To enable verification of service definition, the client instance of the class
*Service* publishes the property *schema* which returns an instance of the
class *Schema* from the module *pyodata.v2.model* and it contains parsed
*$metadata*.
List of the defined EntitySets
------------------------------
If you need to iterate over all EntitySets:
.. code-block:: python
for es in service.schema.entity_sets:
print(es.name)
or if you just need the list of EntitySet names:
.. code-block:: python
entity_set_names = [es.name for es in service.schema.entity_sets]
Property has this label
-----------------------
.. code-block:: python
assert northwind.schema.entity_type('Customer').proprty('CustomerID').label == 'Identifier'
Property has a value helper
---------------------------
.. code-block:: python
assert northwind.schema.entity_type('Customer').proprty('City').value_helper is not None
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