def test_SU_ExplicitParam(self):
"""SU should scroll the screen up by the number of lines given in the parameter."""
self.prepare()
esccmd.SU(2)
expected_lines = [ "klmno",
"pqrst",
"uvwxy",
NUL * 5,
NUL * 5 ]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines);
def test_SU_DefaultParam(self):
"""SU with no parameter should scroll the screen contents up one line."""
self.prepare()
esccmd.SU()
expected_lines = [ "fghij",
"klmno",
"pqrst",
"uvwxy",
NUL * 5 ]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines);
def test_SU_OutsideTopBottomScrollRegion(self):
"""When the cursor is outside the scroll region, SU should scroll the
contents of the scroll region only."""
self.prepare()
esccmd.DECSTBM(2, 4)
esccmd.CUP(Point(1, 1))
esccmd.SU(2)
esccmd.DECSTBM()
expected_lines = ["abcde", "pqrst", empty() * 5, empty() * 5, "uvwxy"]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SU_RespectsLeftRightScrollRegion(self):
"""When the cursor is inside the scroll region, SU 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.SU(2)
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = [
"almne", "fqrsj", "kvwxo", "p" + empty() * 3 + "t",
"u" + empty() * 3 + "y"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SU_CanClearScreen(self):
"""An SU 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.SU(height)
# Ensure the screen is empty
AssertScreenCharsInRectEqual(Rect(1, 1, 4, height), expected_lines);
def test_SU_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.SU(99)
esccmd.DECSTBM()
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = [
"abcde", "f" + empty() * 3 + "j", "k" + empty() * 3 + "o",
"p" + empty() * 3 + "t", "uvwxy"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_SU_LeftRightAndTopBottomScrollRegion(self):
"""When the cursor is outside the scroll region, SU 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.SU(2)
esccmd.DECSTBM()
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = [
"abcde", "fqrsj", "k" + empty() * 3 + "o", "p" + empty() * 3 + "t",
"uvwxy"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)