def test_lift_a2():
def append_2(a, b):
return a + b
assert_equals(validation.Valid('ab'),
validation.lift_a2(append_2).ap(a_v).ap(b_v))
assert_equals(validation.Invalid(['invalid: a']),
validation.lift_a2(append_2).ap(a_i).ap(b_v))
assert_equals(validation.Invalid(['invalid: b']),
validation.lift_a2(append_2).ap(a_v).ap(b_i))
assert_equals(validation.Invalid(['invalid: a', 'invalid: b']),
validation.lift_a2(append_2).ap(a_i).ap(b_i))
def test_to_maybe():
assert_equals(maybe.Just(42), validation.Valid(42).to_maybe())
assert_equals(maybe.Nothing(), validation.Invalid(['nope']).to_maybe())
def test_map():
assert_equals(validation.Valid(42), validation.Valid(6).map(multBy(7)))
assert_equals(validation.Invalid(['doh']),
validation.Invalid(['doh']).map(multBy(7)))
def test_flat_map():
assert_equals(validation.Valid(6), validation.Valid(42).flat_map(divBy(7)))
assert_equals(validation.Invalid(['doh']),
validation.Invalid(['doh']).flat_map(divBy(7)))
def test_str():
assert_equals('Valid(42)', str(validation.Valid(42)))
assert_equals('Invalid([\'doh\'])', str(validation.Invalid(['doh'])))
def test_is_valid():
assert_true(validation.Valid(42).is_valid())
assert_false(validation.Invalid(['doh']).is_valid())
def test_ne():
assert_false(validation.Valid(42).__ne__(validation.Valid(42)))
assert_true(validation.Valid(42).__ne__(validation.Valid(1)))
assert_false(
validation.Invalid(['doh']).__ne__(validation.Invalid(['doh'])))
assert_true(validation.Valid(42).__ne__(validation.Invalid(['doh'])))
def test_lift_a0():
def append(a):
return a
assert_equals(validation.Invalid(["n must be positive in lift_aN(n, f)"]),
validation.lift_aN(0, append).ap(a_v))
def k(y):
if (x == 0):
return validation.Invalid(['doh'])
else:
return validation.Valid(y / x)
validation.Invalid(['doh']).flat_map(divBy(7)))
def test_get_required_env():
assert_true(validation.get_required_env('HOME').is_valid())
assert_false(
validation.get_required_env('THIS_AINT_AN_ENV_VAR').is_valid())
def test_to_maybe():
assert_equals(maybe.Just(42), validation.Valid(42).to_maybe())
assert_equals(maybe.Nothing(), validation.Invalid(['nope']).to_maybe())
a_v = validation.Valid('a')
a_i = validation.Invalid(['invalid: a'])
def test_lift_a():
def append(a):
return a
assert_equals(validation.Valid('a'), validation.lift_a(append).ap(a_v))
b_v = validation.Valid('b')
b_i = validation.Invalid(['invalid: b'])
def test_lift_a2():
def append_2(a, b):
def test_to_validation():
assert_equals(validation.Valid(42), maybe.Just(42).to_validation('nope'))
assert_equals(validation.Invalid(['nope']), maybe.Nothing().to_validation('nope'))
