def test_combining_same_type(self):
flt1 = filtering.And(
filtering.Equal('fiction', True),
filtering.LessThan('rrp', 20),
)
flt2 = filtering.And(
filtering.Equal('authors', 1, len),
filtering.NotEqual('genre', 'fantasy'),
)
flt = flt1 + flt2
assert "(fiction == True AND rrp < 20 AND len(authors) == 1 AND genre != 'fantasy')" == str(
flt)
def test_combine_with_comparison(self):
flt1 = filtering.And(
filtering.Equal('fiction', True),
filtering.LessThan('rrp', 20),
)
flt = flt1 + filtering.Equal('authors', 1, len)
self.assertEqual(
"(fiction == True AND rrp < 20 AND len(authors) == 1)", str(flt))
def test_matches_multiple_matches_resource(self):
# Less than fiction $20 with a single author and not fantasy
flt = filtering.And(
filtering.Equal('fiction', True),
filtering.LessThan('rrp', 20),
filtering.Equal('authors', 1, len),
filtering.NotEqual('genre', 'fantasy'),
)
self.assertTrue(flt(first_book))
def test_combine_with_other_type(self):
flt1 = filtering.And(
filtering.Equal('fiction', True),
filtering.LessThan('rrp', 20),
)
self.assertRaises(TypeError, lambda: flt1 + 'abc')
def test_description(self):
flt = filtering.And(
filtering.Equal('fiction', True),
filtering.LessThan('rrp', 20),
)
self.assertEqual('(fiction == True AND rrp < 20)', str(flt))
def test_empty_description(self):
flt = filtering.And()
self.assertEqual('', str(flt))
def test_empty_description(self):
flt = filtering.And()
assert '' == str(flt)