def test_get_external_datasets(self, mock_get):
        mock_get.return_value.json.return_value = [{'name': 'hpi'}]
        mock_get.return_value.status_code = 200

        ulapd_api = UlapdAPI()
        response = ulapd_api.get_external_datasets()

        self.assertEqual(response, [{'name': 'hpi'}])
def get_list():
    try:
        ulapd_api = UlapdAPI()
        session = dps_session.get_state()

        internal_datasets = ulapd_api.get_datasets()
        external_datasets = ulapd_api.get_external_datasets()

        # Filter out sample
        internal_datasets = [
            d for d in internal_datasets if '_sample' not in d['name']
        ]

        # Add internal/external datasets together
        dataset_list = internal_datasets + external_datasets

        # Sort alphabetically putting datasets starting with numeric characters last
        dataset_list.sort(
            key=lambda d: 'z' if d['title'][0].isdigit() else d['title'])

        # User specific data
        user_access = {}
        api_key = ''
        user_has_activity = False
        if g.user:
            api_key = session['user']['user_details']['api_key']

            # Dictionary of datasets user has access to
            user_access = {d: True for d in session['user']['datasets']}

            # Check if user has downloaded anything for 'agreed licence but not downloaded' state
            user_activity = ulapd_api.get_user_download_activity(
                session['user']['user_details']['user_details_id'])
            user_has_activity = bool(user_activity)

        # Get dataset history for agreed datasets
        agreed_dataset_list = []
        for dataset in dataset_list:
            if check_agreement(dataset['name']):
                dataset['history'] = ulapd_api.get_dataset_history(
                    dataset['name'])
                agreed_dataset_list.append(dataset)

        # Filter out confidential (e.g. DAD dataset) from listings page
        dataset_list = [d for d in dataset_list if 'confidential' != d['type']]
        freemium_licences = {}
        for dataset in user_access:
            if dataset == 'res_cov' or dataset == 'leases':
                dataset_licence = session['user']['datasets'][dataset][
                    'licences']
                if len(dataset_licence) == 1:
                    licence_string = '{} licence'.format(dataset_licence[0])
                    freemium_licences[dataset] = licence_string
                else:
                    start = ", ".join(dataset_licence[:-1])
                    licence_string = '{} and {} licences'.format(
                        start, dataset_licence[-1])
                    freemium_licences[dataset] = licence_string

        return render_template('app/datasets/index.html',
                               datasets_list=dataset_list,
                               api_key=api_key,
                               user_access=user_access,
                               agreed_dataset_list=agreed_dataset_list,
                               dps_session=session,
                               user_has_activity=user_has_activity,
                               freemium_licences=freemium_licences)

    except ApplicationError as e:
        raise ApplicationError(
            'Something went wrong when retrieving the datasets - error: {}'.
            format(e))