test: new field convention TDD

tests/files/test1/test.mo.yaml

@@ -1,3 +1,4 @@
-value: %{sample}
-nested: %{some.nested.value}
-custom: ${custom.field}
+value: ${sample}
+nested: ${some.nested.value}
+custom: ${custom/field}
+uname: ${sample/username}

tests/test_mo.py

@@ -19,7 +19,8 @@ def target_path():
     p.unlink()
 
 
-def test_process(target_path: Path):
+@pytest.fixture
+def test1_content(target_path: Path):
   mo = Mo(Passwords())
   mo.process(Path('tests/files/test1/test.mo.yaml').absolute())
 
@@ -27,9 +28,21 @@ def test_process(target_path: Path):
 
   content = target_path.read_text()
   assert '${' not in content
-  assert '%{' not in content
 
-  parsed = yaml.load(content, Loader=yaml.FullLoader)
-  assert parsed['value'] == 'some_pass'
-  assert parsed['nested'] == 'nested_pass'
-  assert parsed['custom'] == 'custom_content'
+  return yaml.load(content, Loader=yaml.FullLoader)
+
+
+def test_simple(test1_content: dict):
+  assert test1_content['value'] == 'some_pass'
+
+
+def test_nested(test1_content: dict):
+  assert test1_content['nested'] == 'nested_pass'
+
+
+def test_custom_field(test1_content: dict):
+  assert test1_content['custom'] == 'custom_content'
+
+
+def test_username_field(test1_content: dict):
+  assert test1_content['uname'] == 'sample_username'