Add Organisations endpoints

As part of this we also needed to add:
- schemas for validation
- serialize method for Organisation model

tests/app/organisation/test_rest.py

@@ -0,0 +1,90 @@
+from app.models import Organisation
+from tests.app.db import create_organisation
+
+
+def test_get_all_organisations(admin_request, notify_db_session):
+    create_organisation(name='inactive org', active=False)
+    create_organisation(name='active org')
+
+    response = admin_request.get(
+        'organisation.get_organisations',
+        _expected_status=200
+    )
+
+    assert len(response) == 2
+    assert response[0]['name'] == 'active org'
+    assert response[0]['active'] is True
+    assert response[1]['name'] == 'inactive org'
+    assert response[1]['active'] is False
+
+
+def test_get_organisation_by_id(admin_request, notify_db_session):
+    org = create_organisation()
+
+    response = admin_request.get(
+        'organisation.get_organisation_by_id',
+        _expected_status=200,
+        organisation_id=org.id
+    )
+
+    assert set(response.keys()) == {'id', 'name', 'active'}
+    assert response['id'] == str(org.id)
+    assert response['name'] == 'test_org_1'
+    assert response['active'] is True
+
+
+def test_post_create_organisation(admin_request, notify_db_session):
+    data = {
+        'name': 'test organisation',
+        'active': True
+    }
+
+    response = admin_request.post(
+        'organisation.create_organisation',
+        _data=data,
+        _expected_status=201
+    )
+
+    organisation = Organisation.query.all()
+
+    assert data['name'] == response['name']
+    assert data['active'] == response['active']
+    assert len(organisation) == 1
+
+
+def test_post_create_organisation_with_missing_name_gives_validation_error(admin_request, notify_db_session):
+    data = {
+        'active': False
+    }
+
+    response = admin_request.post(
+        'organisation.create_organisation',
+        _data=data,
+        _expected_status=400
+    )
+
+    assert len(response['errors']) == 1
+    assert response['errors'][0]['error'] == 'ValidationError'
+    assert response['errors'][0]['message'] == 'name is a required property'
+
+
+def test_post_update_organisation_updates_fields(admin_request, notify_db_session):
+    org = create_organisation()
+    data = {
+        'name': 'new organisation name',
+        'active': False
+    }
+
+    admin_request.post(
+        'organisation.update_organisation',
+        _data=data,
+        organisation_id=org.id,
+        _expected_status=200
+    )
+
+    organisation = Organisation.query.all()
+
+    assert len(organisation) == 1
+    assert organisation[0].id == org.id
+    assert organisation[0].name == data['name']
+    assert organisation[0].active == data['active']