Pytest syntax for the python programming language

python-tests.py

# Test case
class TestExample:
  def test_example_single(self):
    value = function_to_test("value")
    assert value == "test"

  @pytest.mark.parametrize(
    "function_input,function_output",
    [
      ("", None),
      ("value", "test"),
    ],
  )
  def test_example_multiple(self, function_input, function_output):
    value = function_to_test(function_input)
    assert value == function_output