def test_ensure_width():
screen = HistoryScreen(5, 5, pages=10)
for idx in xrange(len(screen) * 5):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.display == ["21 ", "22 ", "23 ", "24 ", " "]
# a) shrinking the screen, expecting the lines displayed to
# be truncated.
screen.resize(5, 2)
screen.page_up()
assert all(len(l) is not 2 for l in screen.history.top)
assert all(len(l) is 2 for l in screen.history.bottom)
assert screen.display == ["18", "19", "20", "21", "22"]
# b) expading the screen, expecting the lines displayed to
# be filled with whitespace characters.
screen.resize(5, 10)
screen.page_down()
assert all(len(l) is 10 for l in list(screen.history.top)[-3:])
assert all(len(l) is not 10 for l in screen.history.bottom)
assert screen.display == [
"21 ", "22 ", "23 ", "24 ", " "
]
def test_ensure_width():
screen = HistoryScreen(5, 5, pages=10)
for idx in xrange(len(screen) * 5):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.display == [
"21 ",
"22 ",
"23 ",
"24 ",
" "
]
# a) shrinking the screen, expecting the lines displayed to
# be truncated.
screen.resize(5, 2)
screen.page_up()
assert all(len(l) is not 2 for l in screen.history.top)
assert all(len(l) is 2 for l in screen.history.bottom)
assert screen.display == [
"18",
"19",
"20",
"21",
"22"
]
# b) expading the screen, expecting the lines displayed to
# be filled with whitespace characters.
screen.resize(5, 10)
screen.page_down()
assert all(len(l) is 10 for l in list(screen.history.top)[-3:])
assert all(len(l) is not 10 for l in screen.history.bottom)
assert screen.display == [
"21 ",
"22 ",
"23 ",
"24 ",
" "
]
def test_page_down():
screen = HistoryScreen(5, 5, pages=10)
# Once again filling the screen with line numbers, but this time,
# we need them to span on multiple lines.
for idx in xrange(len(screen) * 5):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == ["21 ", "22 ", "23 ", "24 ", " "]
# a) page up -- page down.
screen.page_up()
screen.page_down()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == ["21 ", "22 ", "23 ", "24 ", " "]
# b) double page up -- page down.
screen.page_up()
screen.page_up()
screen.page_down()
assert screen.page == 4
assert screen.history.top
assert chars(screen.history.bottom) == ["23 ", "24 ", " "]
assert screen.display == ["18 ", "19 ", "20 ", "21 ", "22 "]
# c) double page up -- double page down
screen.page_up()
screen.page_up()
screen.page_down()
screen.page_down()
assert screen.page == 4
assert screen.display == ["18 ", "19 ", "20 ", "21 ", "22 "]
def test_page_down():
screen = HistoryScreen(5, 5, pages=10)
# Once again filling the screen with line numbers, but this time,
# we need them to span on multiple lines.
for idx in xrange(len(screen) * 5):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == [
"21 ",
"22 ",
"23 ",
"24 ",
" "
]
# a) page up -- page down.
screen.page_up()
screen.page_down()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == [
"21 ",
"22 ",
"23 ",
"24 ",
" "
]
# b) double page up -- page down.
screen.page_up()
screen.page_up()
screen.page_down()
assert screen.page == 4
assert screen.history.top
assert chars(screen.history.bottom) == [
"23 ",
"24 ",
" "
]
assert screen.display == [
"18 ",
"19 ",
"20 ",
"21 ",
"22 "
]
# c) double page up -- double page down
screen.page_up()
screen.page_up()
screen.page_down()
screen.page_down()
assert screen.page == 4
assert screen.display == [
"18 ",
"19 ",
"20 ",
"21 ",
"22 "
]
