def test_buffer_dict():
c = Container()
names = ['first', 'second', 'third', 'fourth', 'fifth', 'sixth']
d = {name: Buffer(name) for name in names}
for buffer in d.values():
c.append_buffer(buffer)
assert c.buffer_dict() == d
def test_next_buffer():
c = Container()
b = Buffer('test')
c.append_buffer(b)
assert c.next_buffer() is b
with raises(RuntimeError):
c.next_buffer(wrap = False)
assert c.next_buffer() is b
b2 = Buffer('test2')
c.append_buffer(b2)
assert c.next_buffer() is b2
with raises(RuntimeError):
c.next_buffer(wrap = False)
assert c.next_buffer() is b
def test_previous_buffer():
c = Container()
b = Buffer('test')
b2 = Buffer('test2')
c.append_buffer(b)
assert c.previous_buffer() is b
with raises(RuntimeError):
c.previous_buffer()
c.append_buffer(b2)
assert c.previous_buffer() is b2
assert c.previous_buffer is b
with raises(RuntimeError):
c.previous_buffer()
def test_prepend_buffer():
c = Container()
b = Buffer('test')
c.prepend_buffer(b)
assert c.buffers == [b]
assert c.buffer is None
b2 = Buffer('test2')
c.prepend_buffer(b2)
assert c.buffers == [b2, b]
def test_append_buffer():
c = Container()
b = Buffer('test')
c.append_buffer(b)
assert c.buffers == [b]
assert c.buffer is None
b2 = Buffer('test2')
c.append_buffer(b2)
assert c.buffers == [b, b2]
assert c.buffer is None
def test_insert_buffer():
c = Container()
b1 = Buffer('First')
b2 = Buffer('Middle')
b3 = Buffer('Last')
c.append_buffer(b3)
c.insert_buffer(0, b1)
assert c.buffers == [b1, b3]
c.insert_buffer(1, b2)
assert c.buffers == [b1, b2, b3]
def test_remove_buffer():
c = Container()
b = Buffer('test')
b2 = Buffer('test2')
c.append_buffer(b)
c.remove_buffer(b)
assert c.buffers == []
c.append_buffer(b)
c.append_buffer(b2)
c.remove_buffer(b2)
assert c.buffers == [b]
def test_buffer_names():
c = Container()
names = ['first', 'second', 'third', 'fourth', 'fifth']
for name in names:
c.append_buffer(Buffer(name))
assert c.buffer_names() == names
def test_create():
c = Container()
assert c.buffers == []
assert c.buffer is None