Minor refactors:

- Renames s_assemble to s_brief
-  Link s_local to s_brief

apps/cic-ussd/tests/cic_ussd/files/test_local_files.py

@@ -0,0 +1,55 @@
+# standard imports
+import json
+import os
+
+# third-party imports
+from tinydb import Query
+
+# local imports
+from cic_ussd.files.local_files import create_local_file_data_stores, json_file_parser
+from tests.fixtures.config import root_directory
+from tests.helpers.tmp_files import create_tmp_file
+
+
+def test_create_in_memory_data_stores():
+    """
+    GIVEN the cic-ussd application component
+    WHEN the create_in_memory_data_stores function is passed a file and table name
+    THEN it creates a tiny dn data store that can be written to and queried
+    """
+    descriptor, tmp_file = create_tmp_file()
+    test_file = create_local_file_data_stores(file_location=tmp_file, table_name='test_table')
+    # write to data store
+    test_file.insert({
+        'foo': 'bar'
+    })
+    query = Query()
+    inserted_record = test_file.get(query.foo == 'bar')
+    assert inserted_record == {'foo': 'bar'}
+    os.close(descriptor)
+    os.remove(tmp_file)
+
+
+def test_json_file_parser(load_config):
+    """
+    GIVEN the cic-ussd application component
+    WHEN the json_file_parser function is passed a directory path containing JSON files
+    THEN it dynamically loads all the files and compiles their content into one python array
+    """
+    files_dir = load_config.get('STATEMACHINE_TRANSITIONS')
+    files_dir = os.path.join(root_directory, files_dir)
+
+    # total files len
+    file_content_length = 0
+
+    for filepath in os.listdir(files_dir):
+        # get path of data files
+        filepath = os.path.join(files_dir, filepath)
+
+        # read file content
+        data_file = open(filepath)
+        data = json.load(data_file)
+        file_content_length += len(data)
+        data_file.close()
+    assert len(json_file_parser(filepath=files_dir)) == file_content_length
+