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import itertools
import unittest
from ddt import ddt, data, file_data, idata, unpack
from test.mycode import larger_than_two, has_three_elements, is_a_greeting
try:
import yaml
except ImportError: # pragma: no cover
have_yaml_support = False
else:
have_yaml_support = True
# A good-looking decorator
needs_yaml = unittest.skipUnless(
have_yaml_support, "Need YAML to run this test"
)
class Mylist(list):
pass
class MyClass:
def __init__(self, **kwargs):
for field, value in kwargs.items():
setattr(self, field, value)
def __eq__(self, other):
return isinstance(other, dict) and vars(self) == other or \
isinstance(other, MyClass) and vars(self) == vars(other)
def __str__(self):
return "TestObject %s" % vars(self)
def annotated(a, b):
r = Mylist([a, b])
setattr(r, "__name__", "test_%d_greater_than_%d" % (a, b))
return r
def annotated2(listIn, name, docstring):
r = Mylist(listIn)
setattr(r, "__name__", name)
setattr(r, "__doc__", docstring)
return r
@ddt
class FooTestCase(unittest.TestCase):
def test_undecorated(self):
self.assertTrue(larger_than_two(24))
@data(3, 4, 12, 23)
def test_larger_than_two(self, value):
self.assertTrue(larger_than_two(value))
@data(1, -3, 2, 0)
def test_not_larger_than_two(self, value):
self.assertFalse(larger_than_two(value))
@data(annotated(2, 1), annotated(10, 5))
def test_greater(self, value):
a, b = value
self.assertGreater(a, b)
@idata(itertools.product([0, 1, 2], [3, 4, 5]))
def test_iterable_argument(self, value):
first_value, second_value = value
self.assertLessEqual(first_value, 2)
self.assertGreaterEqual(second_value, 3)
@data(annotated2([2, 1], 'Test_case_1', """Test docstring 1"""),
annotated2([10, 5], 'Test_case_2', """Test docstring 2"""))
def test_greater_with_name_docstring(self, value):
a, b = value
self.assertGreater(a, b)
self.assertIsNotNone(getattr(value, "__name__"))
self.assertIsNotNone(getattr(value, "__doc__"))
@file_data('data/test_data_dict_dict.json')
def test_file_data_json_dict_dict(self, start, end, value):
self.assertLess(start, end)
self.assertLess(value, end)
self.assertGreater(value, start)
@file_data('data/test_data_dict.json')
def test_file_data_json_dict(self, value):
self.assertTrue(has_three_elements(value))
@file_data('data/test_data_list.json')
def test_file_data_json_list(self, value):
self.assertTrue(is_a_greeting(value))
@needs_yaml
@file_data('data/test_data_dict_dict.yaml')
def test_file_data_yaml_dict_dict(self, start, end, value):
self.assertLess(start, end)
self.assertLess(value, end)
self.assertGreater(value, start)
@needs_yaml
@file_data('data/test_data_dict.yaml')
def test_file_data_yaml_dict(self, value):
self.assertTrue(has_three_elements(value))
@needs_yaml
@file_data('data/test_data_list.yaml')
def test_file_data_yaml_list(self, value):
self.assertTrue(is_a_greeting(value))
@data((3, 2), (4, 3), (5, 3))
@unpack
def test_tuples_extracted_into_arguments(self, first_value, second_value):
self.assertTrue(first_value > second_value)
@data([3, 2], [4, 3], [5, 3])
@unpack
def test_list_extracted_into_arguments(self, first_value, second_value):
self.assertTrue(first_value > second_value)
@unpack
@data({'first': 1, 'second': 3, 'third': 2},
{'first': 4, 'second': 6, 'third': 5})
def test_dicts_extracted_into_kwargs(self, first, second, third):
self.assertTrue(first < third < second)
@data(u'ascii', u'non-ascii-\N{SNOWMAN}')
def test_unicode(self, value):
self.assertIn(value, (u'ascii', u'non-ascii-\N{SNOWMAN}'))
@data(3, 4, 12, 23)
def test_larger_than_two_with_doc(self, value):
"""Larger than two with value {0}"""
self.assertTrue(larger_than_two(value))
@data(3, 4, 12, 23)
def test_doc_missing_args(self, value):
"""Missing args with value {0} and {1}"""
self.assertTrue(larger_than_two(value))
@data(3, 4, 12, 23)
def test_doc_missing_kargs(self, value):
"""Missing kargs with value {value} {value2}"""
self.assertTrue(larger_than_two(value))
@data([3, 2], [4, 3], [5, 3])
@unpack
def test_list_extracted_with_doc(self, first_value, second_value):
"""Extract into args with first value {} and second value {}"""
self.assertTrue(first_value > second_value)
if have_yaml_support:
# This test will only succeed if the execution context is from the ddt
# directory. pyyaml cannot locate test.test_example.MyClass otherwise!
@ddt
class YamlOnlyTestCase(unittest.TestCase):
@file_data('data/test_custom_yaml_loader.yaml', yaml.UnsafeLoader)
def test_custom_yaml_loader(self, instance, expected):
"""Test with yaml tags to create specific classes to compare"""
self.assertEqual(expected, instance)
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