{%- import "generator_macros.j2" as macros with context -%}
{%- macro test_call(case) %}
            {{ case["property"] }}(
                {% for arg in case["input"].values() -%}
                "{{ arg }}"{{ "," if not loop.last }}
                {% endfor %}
            )
{% endmacro -%}
{{ macros.header() }}

class {{ exercise | camel_case }}Test(unittest.TestCase):
    {% for case in cases -%}
    def test_{{ case["description"] | to_snake }}(self):
        {%- if case is error_case %}
        with self.assertRaises(ValueError) as err:
            {{- test_call(case) }}
        self.assertEqual(type(err.exception), ValueError)
        self.assertEqual(err.exception.args[0], "Strands must be of equal length.")
        {%- else %}
        self.assertEqual(
            {{- test_call(case) }},
            {{ case["expected"] }}
        )
        {%- endif %}
    {% endfor %}
