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73 lines
3.4 KiB
73 lines
3.4 KiB
3 years ago
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import unittest
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import pytest
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try:
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from lasagna import (EXPECTED_BAKE_TIME,
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bake_time_remaining,
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preparation_time_in_minutes,
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elapsed_time_in_minutes)
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except ImportError as import_fail:
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message = import_fail.args[0].split('(', maxsplit=1)
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item_name = import_fail.args[0].split()[3]
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if 'EXPECTED_BAKE_TIME' in message:
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# pylint: disable=raise-missing-from
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raise ImportError(f'We can not find or import the constant {item_name} in your'
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" 'lasagna.py' file. Did you mis-name or forget to define it?")
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else:
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item_name = item_name[:-1] + "()'"
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# pylint: disable=raise-missing-from
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raise ImportError("In your 'lasagna.py' file, we can not find or import the"
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f' function named {item_name}. Did you mis-name or forget to define it?')
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class LasagnaTest(unittest.TestCase):
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@pytest.mark.task(taskno=1)
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def test_EXPECTED_BAKE_TIME(self):
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failure_msg = 'Expected a constant of EXPECTED_BAKE_TIME with a value of 40.'
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self.assertEqual(EXPECTED_BAKE_TIME, 40, msg=failure_msg)
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@pytest.mark.task(taskno=2)
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def test_bake_time_remaining(self):
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input_data = [1, 2, 5, 10, 15, 23, 33, 39]
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result_data = [40 - item for item in input_data]
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for variant, (time, result) in enumerate(zip(input_data, result_data), start=1):
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with self.subTest(f'variation #{variant}', time=time, result=result):
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failure_msg = f'Expected: {result} but the bake time remaining was calculated incorrectly.'
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self.assertEqual(bake_time_remaining(time), result, msg=failure_msg)
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@pytest.mark.task(taskno=3)
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def test_preparation_time_in_minutes(self):
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input_data = [1, 2, 5, 8, 11, 15]
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result_data = [item * 2 for item in input_data]
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for variant, (layers, time) in enumerate(zip(input_data, result_data), start=1):
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with self.subTest(f'variation #{variant}', layers=layers, time=time):
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failure_msg = f'Expected: {time} minutes, but preparation time was calculated incorrectly.'
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self.assertEqual(preparation_time_in_minutes(layers), time, msg=failure_msg)
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@pytest.mark.task(taskno=4)
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def test_elapsed_time_in_minutes(self):
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layer_data = (1, 2, 5, 8, 11, 15)
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time_data = (3, 7, 8, 4, 15, 20)
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result_data = [prep * 2 + elapsed for prep, elapsed in zip(layer_data, time_data)]
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for variant, (layers, time, total_time) in enumerate(zip(layer_data, time_data, result_data), start=1):
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with self.subTest(f'variation #{variant}', layers=layers, time=time, total_time=total_time):
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failure_msg = f'Expected {time} minutes elapsed, but the timing was calculated incorrectly.'
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self.assertEqual(elapsed_time_in_minutes(layers, time), total_time, msg=failure_msg)
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@pytest.mark.task(taskno=5)
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def test_docstrings_were_written(self):
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functions = [bake_time_remaining, preparation_time_in_minutes, elapsed_time_in_minutes]
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for variant, function in enumerate(functions, start=1):
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with self.subTest(f'variation #{variant}', function=function):
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failure_msg = f'Expected a docstring for `{function.__name__}`, but received `None` instead.'
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self.assertIsNotNone(function.__doc__, msg=failure_msg)
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