def test_SD_ExplicitParam(self):
"""SD should scroll the screen down by the number of lines given in the parameter."""
self.prepare()
esccmd.SD(2)
expected_lines = [empty() * 5,
empty() * 5,
"abcde",
"fghij",
"klmno"]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SD_DefaultParam(self):
"""SD with no parameter should scroll the screen contents down one line."""
self.prepare()
esccmd.SD()
expected_lines = [empty() * 5,
"abcde",
"fghij",
"klmno",
"pqrst"]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SD_OutsideTopBottomScrollRegion(self):
"""When the cursor is outside the scroll region, SD should scroll the
contents of the scroll region only."""
self.prepare()
esccmd.DECSTBM(2, 4)
esccmd.CUP(Point(1, 1))
esccmd.SD(2)
esccmd.DECSTBM()
expected_lines = ["abcde", NUL * 5, NUL * 5, "fghij", "uvwxy"]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SD_RespectsLeftRightScrollRegion(self):
"""When the cursor is inside the scroll region, SD should scroll the
contents of the scroll region only."""
self.prepare()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.CUP(Point(3, 2))
esccmd.SD(2)
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = [
"a" + NUL * 3 + "e", "f" + NUL * 3 + "j", "kbcdo", "pghit", "ulmny"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SD_CanClearScreen(self):
"""An SD equal to the height of the screen clears it."""
# Fill the screen with 0001, 0002, ..., height. Fill expected_lines with empty rows.
height = GetScreenSize().height()
expected_lines = []
for i in xrange(height):
y = i + 1
esccmd.CUP(Point(1, y))
escio.Write("%04d" % y)
expected_lines.append(NUL * 4)
# Scroll by |height|
esccmd.SD(height)
# Ensure the screen is empty
AssertScreenCharsInRectEqual(Rect(1, 1, 4, height), expected_lines)
def test_SD_BigScrollLeftRightAndTopBottomScrollRegion(self):
"""Scroll a lr and tb scroll region by more than its height."""
self.prepare()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.DECSTBM(2, 4)
esccmd.CUP(Point(1, 2))
esccmd.SD(99)
esccmd.DECSTBM()
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = [
"abcde", "f" + NUL * 3 + "j", "k" + NUL * 3 + "o",
"p" + NUL * 3 + "t", "uvwxy"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SD_LeftRightAndTopBottomScrollRegion(self):
"""When the cursor is outside the scroll region, SD should scroll the
contents of the scroll region only."""
self.prepare()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.DECSTBM(2, 4)
esccmd.CUP(Point(1, 2))
esccmd.SD(2)
esccmd.DECSTBM()
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = [
"abcde", "f" + NUL * 3 + "j", "k" + NUL * 3 + "o", "pghit", "uvwxy"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SD_OutsideLeftRightScrollRegion(self):
"""When the cursor is outside the scroll region, SD should scroll the
contents of the scroll region only."""
self.prepare()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.CUP(Point(1, 2))
esccmd.SD(2)
esccmd.DECSTBM()
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = ["a" + empty() * 3 + "e",
"f" + empty() * 3 + "j",
"kbcdo",
"pghit",
"ulmny",
empty() + "qrs" + empty(),
empty() + "vwx" + empty()]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 7), expected_lines)
def test_SD_CanClearScreen(self):
"""An SD equal to the height of the screen clears it.
Some older versions of xterm failed this test, due to an incorrect fix
for debugging-assertions in patch #318. That was corrected in #332.
"""
# Fill the screen with 0001, 0002, ..., height. Fill expected_lines with empty rows.
height = GetScreenSize().height()
expected_lines = []
for i in xrange(height):
y = i + 1
esccmd.CUP(Point(1, y))
escio.Write("%04d" % y)
expected_lines.append(empty() * 4)
# Scroll by |height|
esccmd.SD(height)
# Ensure the screen is empty
AssertScreenCharsInRectEqual(Rect(1, 1, 4, height), expected_lines)
