increase test coverage

test/test_config.py

@@ -6,15 +6,65 @@
 :copyright: Copyright (c) 2023 `python-escpos <https://github.com/python-escpos>`_
 :license: MIT
 """
+import pathlib
+
+import appdirs
+import pytest
+
+import escpos.exceptions
 
 
-def generate_dummy_config(path):
+def generate_dummy_config(path, content=None):
     """Generate a dummy config in path"""
-    dummy_config_content = "printer:\n   type: Dummy\n"
+    dummy_config_content = content
+    if not content:
+        dummy_config_content = "printer:\n   type: Dummy\n"
     path.write_text(dummy_config_content)
     assert path.read_text() == dummy_config_content
 
 
+def simple_printer_test(config):
+    """Simple test for the dummy printer."""
+    p = config.printer()
+    p._raw(b"1234")
+
+    assert p.output == b"1234"
+
+
+def test_config_load_with_invalid_config(tmp_path):
+    """Test the loading of a config with a invalid config file."""
+    # generate a dummy config
+    config_file = tmp_path / "config.yaml"
+    generate_dummy_config(config_file, content="}invalid}yaml}")
+
+    # test the config loading
+    from escpos import config
+
+    c = config.Config()
+    with pytest.raises(escpos.exceptions.ConfigSyntaxError):
+        c.load(config_path=config_file)
+
+
+def test_config_load_from_appdir():
+    """Test the loading of a config in appdir."""
+    from escpos import config
+
+    # generate a dummy config
+    config_file = (
+        pathlib.Path(appdirs.user_config_dir(config.Config._app_name))
+        / config.Config._config_file
+    )
+
+    generate_dummy_config(config_file)
+
+    # test the config loading
+    c = config.Config()
+    c.load()
+
+    # test the resulting printer object
+    simple_printer_test(c)
+
+
 def test_config_load_with_file(tmp_path):
     """Test the loading of a config with a config file."""
     # generate a dummy config
@@ -26,13 +76,9 @@ def test_config_load_with_file(tmp_path):
 
     c = config.Config()
     c.load(config_path=config_file)
-    print(c._printer_config)
 
     # test the resulting printer object
-    p = c.printer()
-    p._raw(b"1234")
-
-    assert p.output == b"1234"
+    simple_printer_test(c)
 
 
 def test_config_load_with_path(tmp_path):
@@ -48,7 +94,4 @@ def test_config_load_with_path(tmp_path):
     c.load(config_path=tmp_path)
 
     # test the resulting printer object
-    p = c.printer()
-    p._raw(b"1234")
-
-    assert p.output == b"1234"
+    simple_printer_test(c)