def test_delitem(self):
expr = Expression([0, 1, 2, 3, 4, 5, 6])
del expr[0]
assert_equal(expr, Expression([1, 2, 3, 4, 5, 6]))
with assert_raises_str(IndexError, 'pop index of out range'):
expr.pop(6)
del expr[5]
assert_equal(expr, Expression([1, 2, 3, 4, 5]))
del expr[-1]
assert_equal(expr, Expression([1, 2, 3, 4]))
del expr[-2]
assert_equal(expr, Expression([1, 2, 4]))
del expr[1]
assert_equal(expr, Expression([1, 4]))
del expr[1:]
assert_equal(expr, Expression([1]))
del expr[:]
assert_equal(expr, Expression([]))
for i in range(-2, 3):
with assert_raises_str(IndexError, 'pop from empty list'):
del expr[i]
def test_delitem(self):
expr = Expression([0, 1, 2, 3, 4, 5, 6])
del expr[0]
assert_equal(expr, Expression([1, 2, 3, 4, 5, 6]))
with assert_raises_str(IndexError, 'pop index of out range'):
expr.pop(6)
del expr[5]
assert_equal(expr, Expression([1, 2, 3, 4, 5]))
del expr[-1]
assert_equal(expr, Expression([1, 2, 3, 4]))
del expr[-2]
assert_equal(expr, Expression([1, 2, 4]))
del expr[1]
assert_equal(expr, Expression([1, 4]))
del expr[1:]
assert_equal(expr, Expression([1]))
del expr[:]
assert_equal(expr, Expression([]))
for i in range(-2, 3):
with assert_raises_str(IndexError, 'pop from empty list'):
del expr[i]
def test_pop(self):
expr = Expression([0, 1, 2, 3, 4, 5, 6])
assert_equal(expr.pop(0), Expression(0))
assert_equal(expr, Expression([1, 2, 3, 4, 5, 6]))
with assert_raises_str(IndexError, 'pop index of out range'):
expr.pop(6)
assert_equal(expr.pop(5), Expression(6))
assert_equal(expr, Expression([1, 2, 3, 4, 5]))
assert_equal(expr.pop(-1), Expression(5))
assert_equal(expr, Expression([1, 2, 3, 4]))
assert_equal(expr.pop(-2), Expression(3))
assert_equal(expr, Expression([1, 2, 4]))
assert_equal(expr.pop(1), Expression(2))
assert_equal(expr, Expression([1, 4]))
expr.pop()
expr.pop()
with assert_raises_str(IndexError, 'pop from empty list'):
expr.pop()
for i in range(-2, 3):
with assert_raises_str(IndexError, 'pop from empty list'):
expr.pop(i)
def test_pop(self):
expr = Expression([0, 1, 2, 3, 4, 5, 6])
assert_equal(expr.pop(0), Expression(0))
assert_equal(expr, Expression([1, 2, 3, 4, 5, 6]))
with assert_raises_str(IndexError, 'pop index of out range'):
expr.pop(6)
assert_equal(expr.pop(5), Expression(6))
assert_equal(expr, Expression([1, 2, 3, 4, 5]))
assert_equal(expr.pop(-1), Expression(5))
assert_equal(expr, Expression([1, 2, 3, 4]))
assert_equal(expr.pop(-2), Expression(3))
assert_equal(expr, Expression([1, 2, 4]))
assert_equal(expr.pop(1), Expression(2))
assert_equal(expr, Expression([1, 4]))
expr.pop()
expr.pop()
with assert_raises_str(IndexError, 'pop from empty list'):
expr.pop()
for i in range(-2, 3):
with assert_raises_str(IndexError, 'pop from empty list'):
expr.pop(i)