def test_instance_numeric_right_ops(self):
ph = placeholder()
3 * ph
assert ph(1) == 3
ph = placeholder()
3 / ph
assert ph(1) == 3.0
def test_instance_numeric_left_ops(self):
ph = placeholder()
ph / 3 * 2 + 1
assert ph._chain[0].func is operator.truediv
assert ph._chain[1].func is operator.mul
assert ph._chain[2].func is operator.add
assert ph(3) == 3.0
ph = placeholder()
ph // 3 * 2 + 1
assert ph._chain[0].func is operator.floordiv
assert ph(3) == 3
def test_instance_container_ops(self):
ph = placeholder()
ph[1]
assert ph([1, 2, 3]) == 2
ph = placeholder()
ph[1] = 'a'
l = [1, 2, 3]
ph(l)
assert l[1] == 'a'
#ph = placeholder()
#import ipdb; ipdb.set_trace()
# len(ph)
#assert ph(range(10)) == 10
ph = placeholder()
reversed(ph)
assert list(ph([1, 2, 3])) == [3, 2, 1]
def test_instance_attr_access_ops(self):
class A:
a = 1
ph = placeholder()
#import ipdb; ipdb.set_trace()
ph.a
assert ph(A) == 1
assert ph(A()) == 1
def test_instance_compare_ops(self):
ph = placeholder()
ph > 1
assert ph(2) is True
assert ph(1) is False
ph = placeholder()
ph < 0
assert ph(-1) is True
assert ph(1) is False
ph = placeholder()
ph == 0
assert ph(0) is True
assert ph(-1) is False
ph = placeholder()
ph >= 0
assert ph(0) is True
assert ph(-1) is False
ph = placeholder()
ph <= 0
assert ph(0) is True
assert ph(1) is False
def test_multiple_instance(self):
ph1 = placeholder()
ph2 = placeholder()
ph3 = placeholder()
ph1 + 1 + 2 * ph2 + ph3
assert ph1(1)(1)(38) == 42