def test_new_vec():
nv = Vector(5)
assert nv.n == 0
assert nv.capacity == 5
assert str(nv) == '[]'
assert nv.is_empty() == True
def test_set_item():
nv = Vector(5)
nv.append(0)
nv.append(2)
nv[0] = 5
assert nv[0] == 5
def test_append():
nv = Vector(5)
nv.append(0)
assert nv.n == 1
assert nv.capacity == 5
assert nv[0] == 0
def test_pop_idx():
nv = Vector(5)
nv.append(0)
nv.append(1)
assert nv.pop(0) == 0
assert nv[0] == 1
assert nv.n == 1
def test_remove():
nv = Vector(5)
nv.append(0)
nv.append(0)
nv.append(1)
nv.remove(0)
assert nv.n == 1
assert nv[0] == 1
def test_find():
nv = Vector(5)
nv.append(0)
nv.append(1)
nv.append(2)
assert nv.find(1) == 1
def test_insert_item():
nv = Vector(5)
nv.append(0)
nv.insert(0, 1)
assert nv[0] == 1
assert nv[1] == 0
def test_resize_down():
nv = Vector(5)
nv.append(0)
nv.pop()
assert nv.n == 0
assert nv.capacity == 2
def test_resize_up():
nv = Vector(2)
nv.append(0)
nv.append(1)
nv.append(2)
assert nv.n == 3
assert nv.capacity == 4
def test_delete():
nv = Vector(5)
nv.append(0)
nv.append(1)
nv.delete(1)
assert nv.n == 1
assert nv[0] == 0
def test_pop():
nv = Vector(5)
nv.append(0)
nv.append(1)
assert nv.pop() == 1