S allius/issue217 2 (#230)

* add some reader classes to get the configuration

* adapt unittests

* get config from json or toml file

* loop over all config readers to get the configuration

* rename config test files

* use relative paths for coverage test in vscode

* do not throw an error for missing config files

* remove obsolete tests

* use dotted key notation for pv sub dictonary

* log config reading progress

* remove create_config_toml.py

* remove obsolete tests for the ha_addon

* disable mosquitto tests if the server is down

* ignore main method for test coverage

* increase test coverage

* pytest-cov: use relative_files only on github, so coverage will work with vscode locally

* remove unneeded imports

* add missing test cases

* disable branch coverage, cause its not reachable

app/tests/test_server.py

@@ -0,0 +1,24 @@
+# test_with_pytest.py
+import pytest
+import logging
+import os
+from mock import patch
+from server import get_log_level
+
+def test_get_log_level():
+
+    with patch.dict(os.environ, {'LOG_LVL': ''}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.INFO
+
+    with patch.dict(os.environ, {'LOG_LVL': 'DEBUG'}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.DEBUG
+
+    with patch.dict(os.environ, {'LOG_LVL': 'WARN'}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.WARNING
+
+    with patch.dict(os.environ, {'LOG_LVL': 'UNKNOWN'}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.INFO