adding initial tests

tests/test_config.py

@@ -0,0 +1,36 @@
+import pathlib
+
+import toml
+
+import panaetius
+
+
+def test_default_config_path_set(header):
+    # act
+    config = panaetius.Config(header)
+
+    # assert
+    assert str(config.config_path) == str(pathlib.Path.home() / ".config")
+
+
+def test_user_config_path_set(header, datadir):
+    # arrange
+    config_path = str(datadir / "without_logging")
+
+    # act
+    config = panaetius.Config(header, config_path)
+
+    # assert
+    assert str(config.config_path) == config_path
+
+
+def test_config_file_exists(header, datadir):
+    # arrange
+    config_path = str(datadir / "without_logging")
+
+    # act
+    config = panaetius.Config(header, config_path)
+    config_contents = config.config
+
+    # assert
+    assert config._missing_config == False