def test_piecewise_series():
p1 = Piecewise((sin(x), x < 0), (cos(x), x > 0))
assert p1.nseries(x, n=2) == 1 + O(x**2)
# issue sympy/sympy#4315:
p2 = Piecewise((0, x < -1), (x**2, x <= 1), (log(x), True))
assert p2.series(x) == x**2
def test_piecewise_series():
p1 = Piecewise((sin(x), x < 0), (cos(x), x > 0))
assert p1.nseries(x, n=2) == 1 + O(x**2)
# issue sympy/sympy#4315:
p2 = Piecewise((0, x < -1), (x**2, x <= 1), (log(x), True))
assert p2.series(x) == x**2
def test_piecewise_series():
from diofant import sin, cos, O
p1 = Piecewise((sin(x), x < 0), (cos(x), x > 0))
assert p1.nseries(x, n=2) == 1 + O(x**2)