def test_equivalence():
a = intervalMembership(True, True)
b = intervalMembership(True, False)
assert (a == b) is False
assert (a != b) is True
a = intervalMembership(True, False)
b = intervalMembership(True, False)
assert (a == b) is True
assert (a != b) is False
def test_boolean():
# There can be 9*9 test cases in full mapping of the cartesian product.
# But we only consider 3*3 cases for simplicity.
s = [
intervalMembership(False, False),
intervalMembership(None, None),
intervalMembership(True, True),
]
# Reduced tests for 'And'
a1 = [
intervalMembership(False, False),
intervalMembership(False, False),
intervalMembership(False, False),
intervalMembership(False, False),
intervalMembership(None, None),
intervalMembership(None, None),
intervalMembership(False, False),
intervalMembership(None, None),
intervalMembership(True, True),
]
a1_iter = iter(a1)
for i in range(len(s)):
for j in range(len(s)):
assert s[i] & s[j] == next(a1_iter)
# Reduced tests for 'Or'
a1 = [
intervalMembership(False, False),
intervalMembership(None, False),
intervalMembership(True, False),
intervalMembership(None, False),
intervalMembership(None, None),
intervalMembership(True, None),
intervalMembership(True, False),
intervalMembership(True, None),
intervalMembership(True, True),
]
a1_iter = iter(a1)
for i in range(len(s)):
for j in range(len(s)):
assert s[i] | s[j] == next(a1_iter)
# Reduced tests for 'Xor'
a1 = [
intervalMembership(False, False),
intervalMembership(None, False),
intervalMembership(True, False),
intervalMembership(None, False),
intervalMembership(None, None),
intervalMembership(None, None),
intervalMembership(True, False),
intervalMembership(None, None),
intervalMembership(False, True),
]
a1_iter = iter(a1)
for i in range(len(s)):
for j in range(len(s)):
assert s[i] ^ s[j] == next(a1_iter)
# Reduced tests for 'Not'
a1 = [
intervalMembership(True, False),
intervalMembership(None, None),
intervalMembership(False, True),
]
a1_iter = iter(a1)
for i in range(len(s)):
assert ~s[i] == next(a1_iter)
def test_creation():
assert intervalMembership(True, True)
raises(TypeError, lambda: intervalMembership(True))
raises(TypeError, lambda: intervalMembership(True, True, True))
def test_str():
a = intervalMembership(True, False)
assert str(a) == "intervalMembership(True, False)"
assert repr(a) == "intervalMembership(True, False)"
def test_boolean_errors():
a = intervalMembership(True, True)
raises(ValueError, lambda: a & 1)
raises(ValueError, lambda: a | 1)
raises(ValueError, lambda: a ^ 1)
def test_getitem():
a = intervalMembership(True, False)
assert a[0] is True
assert a[1] is False
raises(IndexError, lambda: a[2])
