Fix cookiecutter 1 test files

[h4iku]

The file tests/test-generate-context/non_ascii.json needs to exist in the buggy version for the test to run correctly because the test passes it as input to the function under test: cookiecutter/cookiecutter@7f6804c
Without it, a FileNotFoundError occurs:

=================================== FAILURES ===================================
________________ test_generate_context_decodes_non_ascii_chars _________________

    def test_generate_context_decodes_non_ascii_chars():
        """Verify `generate_context` correctly decodes non-ascii chars."""
        expected_context = {'non_ascii': OrderedDict([('full_name', 'éèà'),])}
    
        generated_context = generate.generate_context(
>           context_file='tests/test-generate-context/non_ascii.json'
        )

tests/test_generate_context.py:116: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

context_file = 'tests/test-generate-context/non_ascii.json'
default_context = None, extra_context = None

    def generate_context(
        context_file='cookiecutter.json', default_context=None, extra_context=None
    ):
        """Generate the context for a Cookiecutter project template.
    
        Loads the JSON file as a Python object, with key being the JSON filename.
    
        :param context_file: JSON file containing key/value pairs for populating
            the cookiecutter's variables.
        :param default_context: Dictionary containing config to take into account.
        :param extra_context: Dictionary containing configuration overrides
        """
        context = OrderedDict([])
    
        try:
>           with open(context_file) as file_handle:
E           FileNotFoundError: [Errno 2] No such file or directory: 'tests/test-generate-context/non_ascii.json'

cookiecutter/generate.py:85: FileNotFoundError