def test_page_up():
screen = HistoryScreen(4, 4, 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) * 10):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == ["37 ", "38 ", "39 ", " "]
assert chars(screen.history.top)[-4:] == ["33 ", "34 ", "35 ", "36 "]
# a) first page up.
screen.page_up()
assert screen.page == 4
assert screen.display == ["35 ", "36 ", "37 ", "38 "]
assert chars(screen.history.top)[-4:] == ["31 ", "32 ", "33 ", "34 "]
assert len(screen.history.bottom) == 2
assert chars(screen.history.bottom) == [
"39 ",
" ",
]
# b) second page up.
screen.page_up()
assert screen.page == 3
assert screen.display == [
"33 ",
"34 ",
"35 ",
"36 ",
]
assert len(screen.history.bottom) == 4
assert chars(screen.history.bottom) == [
"37 ",
"38 ",
"39 ",
" ",
]
# c) same with odd number of lines.
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) * 10):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == ["46 ", "47 ", "48 ", "49 ", " "]
screen.page_up()
assert screen.page == 4
assert screen.display == ["43 ", "44 ", "45 ", "46 ", "47 "]
assert len(screen.history.bottom) == 3
assert chars(screen.history.bottom) == [
"48 ",
"49 ",
" ",
]
def test_index():
screen = HistoryScreen(5, 5, pages=10)
# Filling the screen with line numbers, so it's easier to
# track history contents.
for idx in xrange(len(screen)):
screen.draw(unicode(idx))
if idx is not len(screen) - 1:
screen.linefeed()
assert not screen.history.top
assert not screen.history.bottom
# a) first index, expecting top history to be updated.
line = screen[0]
screen.index()
assert screen.history.top
assert screen.history.top[-1] == line
# b) second index.
line = screen[0]
screen.index()
assert len(screen.history.top) == 2
assert screen.history.top[-1] == line
# c) rotation.
for _ in xrange(len(screen) * screen.lines):
screen.index()
assert len(screen.history.top) == 25 # pages // 2 * lines
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_up():
screen = HistoryScreen(4, 4, 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) * 10):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == [
"37 ",
"38 ",
"39 ",
" "
]
assert chars(screen.history.top)[-4:] == [
"33 ",
"34 ",
"35 ",
"36 "
]
# a) first page up.
screen.page_up()
assert screen.page == 4
assert screen.display == [
"35 ",
"36 ",
"37 ",
"38 "
]
assert chars(screen.history.top)[-4:] == [
"31 ",
"32 ",
"33 ",
"34 "
]
assert len(screen.history.bottom) == 2
assert chars(screen.history.bottom) == [
"39 ",
" ",
]
# b) second page up.
screen.page_up()
assert screen.page == 3
assert screen.display == [
"33 ",
"34 ",
"35 ",
"36 ",
]
assert len(screen.history.bottom) == 4
assert chars(screen.history.bottom) == [
"37 ",
"38 ",
"39 ",
" ",
]
# c) same with odd number of lines.
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) * 10):
map(screen.draw, unicode(idx))
screen.linefeed()
assert screen.history.top
assert not screen.history.bottom
assert screen.page == 5
assert screen.display == [
"46 ",
"47 ",
"48 ",
"49 ",
" "
]
screen.page_up()
assert screen.page == 4
assert screen.display == [
"43 ",
"44 ",
"45 ",
"46 ",
"47 "
]
assert len(screen.history.bottom) == 3
assert chars(screen.history.bottom) == [
"48 ",
"49 ",
" ",
]
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_index():
screen = HistoryScreen(5, 5, pages=10)
# Filling the screen with line numbers, so it's easier to
# track history contents.
for idx in xrange(len(screen)):
screen.draw(unicode(idx))
if idx is not len(screen) - 1:
screen.linefeed()
assert not screen.history.top
assert not screen.history.bottom
# a) first index, expecting top history to be updated.
line = screen[0]
screen.index()
assert screen.history.top
assert screen.history.top[-1] == line
# b) second index.
line = screen[0]
screen.index()
assert len(screen.history.top) == 2
assert screen.history.top[-1] == line
# c) rotation.
for _ in xrange(len(screen) * screen.lines):
screen.index()
assert len(screen.history.top) == 25 # pages // 2 * lines
