[internal] 100% test coverage

tests/unit/test_annotations.py

@@ -1,3 +1,5 @@
+import pytest
+
 from fancy_dict.merger import add, overwrite
 from fancy_dict.conditions import if_existing, always
 from fancy_dict.annotations import Annotations
@@ -44,3 +46,7 @@ def test_update_condition(self):
         assert add == annotations.merge_method
         assert not annotations.finalized
         assert always == annotations.condition
+
+    def test_attribute_error_if_not_in_defaults(self):
+        with pytest.raises(AttributeError):
+            assert not Annotations().no_attribute

tests/unit/test_loader.py

@@ -1,10 +1,11 @@
 import os
+import json
+from unittest import mock
 from pathlib import Path
 from contextlib import contextmanager
-from io import StringIO
+from io import StringIO, IOBase
 
 import pytest
-import json
 
 from fancy_dict.loader import CompositeLoader, FileLoader, DictLoader, \
     KeyAnnotationsConverter, HttpLoader, IoLoader
@@ -132,6 +133,10 @@ def test_can_load(self, tmpdir):
     def test_can_load_false_if_url(self):
         assert not FileLoader.can_load("http://www.test.de")
 
+    def test_can_load_false_if_os_error(self):
+        with mock.patch("pathlib.Path.exists", side_effect=OSError):
+            assert not FileLoader.can_load("os_error")
+
 
 class TestDictLoader:
     def test_load(self):
@@ -206,6 +211,13 @@ def test_pass_args_to_sub_loader(self, tmpdir):
             result = {"key": "value"}
             assert result == loader.load("file.yml")
 
+    def test_can_load(self, tmpdir):
+        with file_structure({"file.yml": {"a": 1}}, tmpdir):
+            assert CompositeLoader(FancyDict).can_load("file.yml")
+        assert CompositeLoader(FancyDict).can_load("http://www.file.com")
+        assert CompositeLoader(FancyDict).can_load({})
+        assert CompositeLoader(FancyDict).can_load(IOBase())
+
 
 class TestKeyAnnotationsConverter:
     def test_key_name_and_defaults(self):