def test_after_scroll_down_no_max_height():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.scroll_down()
assert 0 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 0 == viewport.v_start # This shouldn't change if there's no maxheight (=empty file)
assert 53 == viewport.v_stop # taking up the space of the designated screen
def test_after_scroll_up_no_max_height():
viewport = Viewport(vstart=400)
viewport.set_term_size(53, 176)
viewport.scroll_up()
assert 0 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 0 == viewport.v_start # Looks good - didn't change
assert 53 == viewport.v_stop # BUG? Should this change now? Why was it 50 before? Did anything really change?
def test_after_scroll_down():
viewport = Viewport()
viewport.set_term_size(50, 120)
viewport.max_width = 400
viewport.max_height = 200
viewport.scroll_down()
assert (0, 120) == (viewport.h_start, viewport.h_stop)
assert (50, 100) == (viewport.v_start, viewport.v_stop)
def test_after_scroll_bottom(init_vstart, init_hstart, term_size,
max_matrix_dim, expected):
viewport = Viewport(init_vstart, init_hstart)
viewport.set_term_size(*term_size)
viewport.max_width = max_matrix_dim[1]
viewport.max_height = max_matrix_dim[0]
viewport.scroll_bottom()
assert expected == (viewport.v_start, viewport.v_stop, viewport.h_start,
viewport.h_stop)
def test_after_scroll_right_when_not_all_space_available_to_the_right():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_width = 200
viewport.max_height = 200
viewport.scroll_right()
assert 200 - 176 == viewport.h_start # corrected behaviour: last element should touch right screen edge, if possible!
assert 200 == viewport.h_stop # (not scroll endelessly to the right)
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_right():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_width = 400
viewport.max_height = 200
viewport.scroll_right()
assert 176 / 2 == viewport.h_start # corrected behaviour: last element should touch right screen edge, if possible!
assert 176 / 2 + 176 == viewport.h_stop # (not scroll endelessly to the right)
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_left():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_width = 200
viewport.max_height = 200
viewport.scroll_left()
assert 0 == viewport.h_start
assert 176 == viewport.h_stop # BUG?? or assert(10 == viewport.h_stop) is a BUG
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_right(init_vstart, init_hstart, term_size,
max_matrix_dim, expected):
viewport = Viewport(init_vstart, init_hstart)
viewport.set_term_size(*term_size)
viewport.max_width = max_matrix_dim[1]
viewport.max_height = max_matrix_dim[0]
viewport.scroll_right()
# corrected behaviour: last element should touch right screen edge, if possible!
assert expected == (viewport.v_start, viewport.v_stop, viewport.h_start,
viewport.h_stop)
def test_scroll_far_right_attaches_to_right_screen_edge():
viewport = Viewport(200, 200)
viewport.set_term_size(53, 176)
viewport.max_width = 400
viewport.max_height = 400
viewport.scroll_far_right()
assert 400 - 176 == viewport.h_start
assert 400 == viewport.h_stop
assert 200 == viewport.v_start
assert 200 + 53 == viewport.v_stop
def test_after_reset_to_starting_position():
viewport = Viewport(400, 500)
viewport.set_term_size(53, 176)
viewport.max_width = 500
viewport.max_height = 500
viewport.reset_display()
assert 0 == viewport.v_start
assert 0 == viewport.h_start
assert 53 == viewport.v_stop
assert 176 == viewport.h_stop
def test_after_scroll_right_with_nowhere_to_go():
viewport = Viewport(hstart=400 - 176)
viewport.set_term_size(53, 176)
viewport.max_width = 400
viewport.max_height = 200
viewport.scroll_right()
assert 400 - 176 == viewport.h_start # OK, shouldn't move!
assert 400 == viewport.h_stop # (not scroll endelessly to the right)
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_bottom(init_vstart, init_hstart, term_size, max_matrix_dim, expected):
viewport = Viewport(init_vstart, init_hstart)
viewport.set_term_size(*term_size)
viewport.max_width = max_matrix_dim[1]
viewport.max_height = max_matrix_dim[0]
viewport.scroll_bottom()
assert expected == (viewport.v_start, viewport.v_stop, viewport.h_start, viewport.h_stop)
def test_after_scroll_right(init_vstart, init_hstart, term_size, max_matrix_dim, expected):
viewport = Viewport(init_vstart, init_hstart)
viewport.set_term_size(*term_size)
viewport.max_width = max_matrix_dim[1]
viewport.max_height = max_matrix_dim[0]
viewport.scroll_right()
# corrected behaviour: last element should touch right screen edge, if possible!
assert expected == (viewport.v_start, viewport.v_stop, viewport.h_start, viewport.h_stop)
def test_after_scroll_down():
viewport = Viewport()
viewport.set_term_size(50, 120)
viewport.max_width = 400
viewport.max_height = 200
viewport.scroll_down()
assert (0, 120) == (viewport.h_start, viewport.h_stop)
assert (50, 100) == (viewport.v_start, viewport.v_stop)
def test_scroll_far_right_attaches_to_right_screen_edge():
viewport = Viewport(200, 200)
viewport.set_term_size(53, 176)
viewport.max_width = 400
viewport.max_height = 400
viewport.scroll_far_right()
assert 400 - 176 == viewport.h_start
assert 400 == viewport.h_stop
assert 200 == viewport.v_start
assert 200 + 53 == viewport.v_stop
def test_after_reset_to_starting_position():
viewport = Viewport(400, 500)
viewport.set_term_size(53, 176)
viewport.max_width = 500
viewport.max_height = 500
viewport.reset_display()
assert 0 == viewport.v_start
assert 0 == viewport.h_start
assert 53 == viewport.v_stop
assert 176 == viewport.h_stop
def test_after_scroll_right_with_nowhere_to_go():
viewport = Viewport(hstart=400 - 176)
viewport.set_term_size(53, 176)
viewport.max_width = 400
viewport.max_height = 200
viewport.scroll_right()
assert 400 - 176 == viewport.h_start # OK, shouldn't move!
assert 400 == viewport.h_stop # (not scroll endelessly to the right)
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_right():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_width = 400
viewport.max_height = 200
viewport.scroll_right()
assert 176 / 2 == viewport.h_start # corrected behaviour: last element should touch right screen edge, if possible!
assert 176 / 2 + 176 == viewport.h_stop # (not scroll endelessly to the right)
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_right_when_not_all_space_available_to_the_right():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_width = 200
viewport.max_height = 200
viewport.scroll_right()
assert 200 - 176 == viewport.h_start # corrected behaviour: last element should touch right screen edge, if possible!
assert 200 == viewport.h_stop # (not scroll endelessly to the right)
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_up():
viewport = Viewport(vstart=276)
viewport.set_term_size(53, 176)
viewport.max_height = 300
viewport.scroll_up()
assert 300 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 276 - 53 == viewport.v_start
assert 276 == viewport.v_stop
def test_after_scroll_left():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_width = 200
viewport.max_height = 200
viewport.scroll_left()
assert 0 == viewport.h_start
assert 176 == viewport.h_stop # BUG?? or assert(10 == viewport.h_stop) is a BUG
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_down_scroll_up():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_height = 300
viewport.scroll_down()
assert 300 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 53 == viewport.v_start # This scrolling logic looks ok
assert 106 == viewport.v_stop
viewport.scroll_up() # Now we can scroll up again
assert 300 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_scroll_up_no_max_height():
viewport = Viewport(vstart=400)
viewport.set_term_size(53, 176)
viewport.scroll_up()
assert 0 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 0 == viewport.v_start # Looks good - didn't change
assert 53 == viewport.v_stop # BUG? Should this change now? Why was it 50 before? Did anything really change?
def test_after_scroll_down_no_max_height():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.scroll_down()
assert 0 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 0 == viewport.v_start # This shouldn't change if there's no maxheight (=empty file)
assert 53 == viewport.v_stop # taking up the space of the designated screen
def test_after_scroll_up():
viewport = Viewport(vstart=276)
viewport.set_term_size(53, 176)
viewport.max_height = 300
viewport.scroll_up()
assert 300 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 276 - 53 == viewport.v_start
assert 276 == viewport.v_stop
def test_after_scroll_down_scroll_up():
viewport = Viewport()
viewport.set_term_size(53, 176)
viewport.max_height = 300
viewport.scroll_down()
assert 300 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 53 == viewport.v_start # This scrolling logic looks ok
assert 106 == viewport.v_stop
viewport.scroll_up() # Now we can scroll up again
assert 300 == viewport.max_height
assert 0 == viewport.h_start
assert 176 == viewport.h_stop
assert 0 == viewport.v_start
assert 53 == viewport.v_stop
def test_after_set_term_size():
viewport = Viewport()
viewport.set_term_size(53, 176)
assert 53 == viewport.v_term_size
assert 176 == viewport.h_term_size
def test_defaults():
viewport = Viewport()
assert 0 == viewport.h_start
assert 0 == viewport.h_stop
assert 0 == viewport.v_start
assert 0 == viewport.v_stop
def test_after_set_term_size():
viewport = Viewport()
viewport.set_term_size(53, 176)
assert 53 == viewport.v_term_size
assert 176 == viewport.h_term_size