def test_invalid_rotations():
"""cannot rotate blocks if they will collide with another"""
field = Field.from_str('0,0,0,0;0,0,0,0;0,0,0,2;0,0,0,2;0,0,0,2;0,0,0,2')
# Vertical I blocks placed next to each other
block = IBlock(field).rotate_cw()
block.position = 0, 2
assert str(field) == '0,0,0,0;0,0,0,0;0,0,1,2;0,0,1,2;0,0,1,2;0,0,1,2'
# Block unable to rotate from this position
with pytest.raises(InvalidBlockRotation):
block.rotate_ccw()
assert str(field) == '0,0,0,0;0,0,0,0;0,0,1,2;0,0,1,2;0,0,1,2;0,0,1,2'
def test_i_block():
field = Field(6, 4)
block = IBlock(field)
block.position = 0, -1
assert str(field) == '1,1,1,1;0,0,0,0;0,0,0,0;0,0,0,0;0,0,0,0;0,0,0,0'
block.rotate_ccw()
assert str(field) == '0,1,0,0;0,1,0,0;0,1,0,0;0,0,0,0;0,0,0,0;0,0,0,0'
block.rotate_cw().rotate_cw()
assert str(field) == '0,0,1,0;0,0,1,0;0,0,1,0;0,0,0,0;0,0,0,0;0,0,0,0'
block.position = 1, 2
assert str(field) == '0,0,0,0;0,0,0,0;0,0,0,1;0,0,0,1;0,0,0,1;0,0,0,1'