Fix linting in tests

.gitattributes

@@ -0,0 +1,3 @@
+*           text=auto
+*crlf.txt   text eol=crlf
+simple-with-newline.txt text eol=lf

tests/test-generate-files-line-end/{{cookiecutter.test_name}}/{{cookiecutter.folder_name}}/{{cookiecutter.filename}}.py

@@ -1 +1,2 @@
+"""Sample file to be created through a cookiecutter run."""
 print("This is the contents of {{ cookiecutter.filename }}.py.")

tests/test_generate_files.py

@@ -91,11 +91,10 @@ def test_generate_files_with_trailing_newline():
 
 @pytest.mark.usefixtures('clean_system', 'remove_additional_folders')
 def test_generate_files_with_windows_newline():
+    """Verify windows source line end not changed during files generation."""
     generate.generate_files(
-        context={
-            'cookiecutter': {'food': 'pizzä'}
-        },
-        repo_dir='tests/test-generate-files'
+        context={'cookiecutter': {'food': 'pizzä'}},
+        repo_dir='tests/test-generate-files',
     )
 
     newline_file = 'inputpizzä/simple-with-newline-crlf.txt'