def test_for_any(self):
some_predicate = for_any(gt(10), lt(6), eq(7.5))
self.assertTrue(some_predicate(7.5))
self.assertTrue(some_predicate(15))
self.assertTrue(some_predicate(-4))
self.assertFalse(some_predicate(6))
def test_for_any(self):
some_predicate = for_any(gt(10), lt(6), eq(7.5))
self.assertTrue(some_predicate(7.5))
self.assertTrue(some_predicate(15))
self.assertTrue(some_predicate(-4))
self.assertFalse(some_predicate(6))
def tests_from_task(self):
digit = oftype(int) & gt(-1) & lt(10)
self.assertTrue(digit(5))
self.assertFalse(digit(-2))
self.assertFalse(digit("a"))
binary = eq(0) | eq(1)
self.assertTrue(binary(0))
self.assertFalse(binary(2))
number = for_any(oftype(int), oftype(float), oftype(complex))
self.assertTrue(number(10))
self.assertTrue(number(1 + 2j))
self.assertFalse(number("kiuftence"))
is_the_empty_string = pred(lambda x: x is "")
self.assertFalse(is_the_empty_string("me4ence"))
self.assertFalse('')
self.assertFalse("")
def tests_from_task(self):
digit = oftype(int) & gt(-1) & lt(10)
self.assertTrue(digit(5))
self.assertFalse(digit(-2))
self.assertFalse(digit("a"))
binary = eq(0) | eq(1)
self.assertTrue(binary(0))
self.assertFalse(binary(2))
number = for_any(oftype(int), oftype(float), oftype(complex))
self.assertTrue(number(10))
self.assertTrue(number(1+2j))
self.assertFalse(number("kiuftence"))
is_the_empty_string = pred(lambda x: x is "")
self.assertFalse(is_the_empty_string("me4ence"))
self.assertFalse('')
self.assertFalse("")
def test_combination_disjunction(self):
negative_or_float=lt(0) | oftype(float)
self.assertTrue(negative_or_float(-1))
self.assertTrue(negative_or_float(1.5))
self.assertFalse(negative_or_float(3))
neg_or_float_or_zero=negative_or_float | eq(0)
self.assertTrue(neg_or_float_or_zero(0))
self.assertFalse(neg_or_float_or_zero(4))
self.assertTrue(neg_or_float_or_zero(1.5))
def test_combination_disjunction(self):
negative_or_float = lt(0) | oftype(float)
self.assertTrue(negative_or_float(-1))
self.assertTrue(negative_or_float(1.5))
self.assertFalse(negative_or_float(3))
neg_or_float_or_zero = negative_or_float | eq(0)
self.assertTrue(neg_or_float_or_zero(0))
self.assertFalse(neg_or_float_or_zero(4))
self.assertTrue(neg_or_float_or_zero(1.5))
def test_predicate_disjunction(self):
lt_pi_or_gt_fourty_two = lt(3.14) | gt(42)
self.assertTrue(lt_pi_or_gt_fourty_two(1))
self.assertTrue(lt_pi_or_gt_fourty_two(43))
self.assertFalse(lt_pi_or_gt_fourty_two(15))
lt_pi_or_gt_fourty_two_and_13 = lt_pi_or_gt_fourty_two |\
eq(13)
self.assertTrue(lt_pi_or_gt_fourty_two_and_13(13))
self.assertFalse(lt_pi_or_gt_fourty_two_and_13(15))
def test_predicate_disjunction(self):
lt_pi_or_gt_fourty_two = lt(3.14) | gt(42)
self.assertTrue(lt_pi_or_gt_fourty_two(1))
self.assertTrue(lt_pi_or_gt_fourty_two(43))
self.assertFalse(lt_pi_or_gt_fourty_two(15))
lt_pi_or_gt_fourty_two_and_13 = lt_pi_or_gt_fourty_two |\
eq(13)
self.assertTrue(lt_pi_or_gt_fourty_two_and_13(13))
self.assertFalse(lt_pi_or_gt_fourty_two_and_13(15))
def test_eq(self):
self.assertTrue(eq(0)(0))
self.assertFalse(eq(0)(1))
self.assertTrue(eq([])([]))
self.assertTrue(eq(None)(None))
self.assertTrue(eq('man united champions')('man united champions'))
self.assertFalse(eq('chelsea')('champions'))
def test_eq(self):
self.assertTrue(eq(0)(0))
self.assertFalse(eq(0)(1))
self.assertTrue(eq([])([]))
self.assertTrue(eq(None)(None))
self.assertTrue(eq('man united champions')('man united champions'))
self.assertFalse(eq('chelsea')('champions'))
def test_predicate_conjuction(self):
between_pi_and_fourty_two = gt(3.14) & lt(42)
self.assertTrue(between_pi_and_fourty_two(10))
self.assertFalse(between_pi_and_fourty_two(3))
self.assertFalse(between_pi_and_fourty_two(43))
between_pi_and_fourty_two_except_thirteen =\
between_pi_and_fourty_two & ~eq(13)
self.assertTrue(between_pi_and_fourty_two_except_thirteen(5))
self.assertTrue(between_pi_and_fourty_two_except_thirteen(15))
self.assertFalse(between_pi_and_fourty_two_except_thirteen(13))
def test_predicate_conjuction(self):
between_pi_and_fourty_two = gt(3.14) & lt(42)
self.assertTrue(between_pi_and_fourty_two(10))
self.assertFalse(between_pi_and_fourty_two(3))
self.assertFalse(between_pi_and_fourty_two(43))
between_pi_and_fourty_two_except_thirteen =\
between_pi_and_fourty_two & ~eq(13)
self.assertTrue(between_pi_and_fourty_two_except_thirteen(5))
self.assertTrue(between_pi_and_fourty_two_except_thirteen(15))
self.assertFalse(between_pi_and_fourty_two_except_thirteen(13))
def test_or(self):
self.assertTrue(( gt(0) | eq(-42) )(-42))
self.assertFalse(( gt(0) | eq(-42) )(-43))
self.assertTrue((gt(0) | lt(-5) | eq(-5) | oftype(float))(-3.0))
self.assertFalse((gt(0) | lt(-5) | eq(-5) | oftype(float))(-3))
self.assertTrue((gt(0) | lt(-5) | eq(-5) | oftype(float))(-5))
self.assertFalse((gt(0) | lt(-5) | eq(-5) | oftype(float))(-2))
for i in range(-5,6):
if i == 0:
self.assertFalse((gt(0) | lt(0))(i))
else:
self.assertTrue((gt(0) | lt(0))(i))
def test_or(self):
self.assertTrue((gt(0) | eq(-42))(-42))
self.assertFalse((gt(0) | eq(-42))(-43))
self.assertTrue((gt(0) | lt(-5) | eq(-5) | oftype(float))(-3.0))
self.assertFalse((gt(0) | lt(-5) | eq(-5) | oftype(float))(-3))
self.assertTrue((gt(0) | lt(-5) | eq(-5) | oftype(float))(-5))
self.assertFalse((gt(0) | lt(-5) | eq(-5) | oftype(float))(-2))
for i in range(-5, 6):
if i == 0:
self.assertFalse((gt(0) | lt(0))(i))
else:
self.assertTrue((gt(0) | lt(0))(i))
def test_simple_eq(self):
self.assertTrue(eq(10)(10))
self.assertFalse(eq(10)(5))
def test_for_any(self):
self.assertTrue(for_any(eq(10), eq(5))(10))
self.assertTrue(for_any(eq(10), eq(5), eq(0))(0))
self.assertFalse(for_any(eq(10), eq(5), eq(0))(1))
def test_for_all(self):
self.assertTrue(for_all(gt(0), lt(10))(5))
self.assertTrue(for_all(gt(0), lt(10), eq(5))(5))
self.assertFalse(for_all(gt(0), lt(10), eq(5))(7))
self.assertFalse(for_all(eq(0), eq(1))(0))
def test_equal_predicate(self):
zero = eq(0)
self.assertTrue(zero(0))
self.assertFalse(zero(1))
self.assertFalse(zero(-1.5))
def test_eq(self):
equals_fourty_two = eq(42)
self.assertTrue(equals_fourty_two(42))
self.assertFalse(equals_fourty_two(3.12))
def test_eq(self):
equals_fourty_two = eq(42)
self.assertTrue(equals_fourty_two(42))
self.assertFalse(equals_fourty_two(3.12))
def test_implication(self):
self.assertTrue((gt(10) >> eq(20))(20))
self.assertTrue((gt(10) >> eq(20))(0))
self.assertTrue((gt(10) >> eq(0))(0))
self.assertFalse((gt(10) >> eq(20))(15))
def test_equal_predicate(self):
zero=eq(0)
self.assertTrue(zero(0))
self.assertFalse(zero(1))
self.assertFalse(zero(-1.5))