def test_DL_InScrollRegion(self):
"""Test that DL does the right thing when the cursor is inside the scroll
region."""
self.prepareForRegion()
esccmd.DECSTBM(2, 4)
esccmd.CUP(Point(3, 2))
esccmd.DL()
esccmd.DECSTBM()
expected_lines = ["abcde", "klmno", "pqrst", NUL * 5, "uvwxy"]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_DL_OutsideLeftRightScrollRegion(self):
"""Test that DL does nothing outside a left-right margin."""
self.prepareForRegion()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.CUP(Point(1, 2))
esccmd.DL()
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = ["abcde", "fghij", "klmno", "pqrst", "uvwxy"]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_DL_InLeftRightScrollRegion(self):
"""Test that DL respects left-right margins."""
self.prepareForRegion()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.CUP(Point(3, 2))
esccmd.DL()
esccmd.DECRESET(esccmd.DECLRMM)
expected_lines = [
"abcde", "flmnj", "kqrso", "pvwxt", "u" + NUL * 3 + "y"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_DL_DeleteMoreThanVisible(self):
"""Test passing a too-big parameter to DL."""
# Set up the screen with 0001, 0002, ..., height
self.prepare()
# Delete more than the height of the screen.
height = GetScreenSize().height()
esccmd.DL(height * 2)
# Build an array of 0001 followed by height-1 empty lines.
y = 1
expected_lines = ["0001"]
for i in xrange(height - 1):
expected_lines.append(NUL * 4)
AssertScreenCharsInRectEqual(Rect(1, 1, 4, height), expected_lines)
def test_DL_InLeftRightAndTopBottomScrollRegion(self):
"""Test that DL respects left-right margins together with top-bottom."""
self.prepareForRegion()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.DECSTBM(2, 4)
esccmd.CUP(Point(3, 2))
esccmd.DL()
esccmd.DECRESET(esccmd.DECLRMM)
esccmd.DECSTBM()
expected_lines = [
"abcde", "flmnj", "kqrso", "p" + NUL * 3 + "t", "uvwxy"
]
AssertScreenCharsInRectEqual(Rect(1, 1, 5, 5), expected_lines)
def test_DL_ClearOutLeftRightAndTopBottomScrollRegion(self):
"""Erase the whole scroll region with both kinds of margins."""
self.prepareForRegion()
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 4)
esccmd.DECSTBM(2, 4)
esccmd.CUP(Point(3, 2))
esccmd.DL(99)
esccmd.DECRESET(esccmd.DECLRMM)
esccmd.DECSTBM()
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_DL_DefaultParam(self):
"""DL with no parameter should delete a single line."""
# Set up the screen with 0001, 0002, ..., height
self.prepare()
# Delete the second line, moving subsequent lines up.
esccmd.DL()
# Build an array of 0001, 0003, 0004, ..., height
height = GetScreenSize().height()
y = 1
expected_lines = []
for i in xrange(height):
if y != 2:
expected_lines.append("%04d" % y)
y += 1
# The last line should be blank
expected_lines.append(NUL * 4)
AssertScreenCharsInRectEqual(Rect(1, 1, 4, height), expected_lines)
def test_DL_ExplicitParam(self):
"""DL should delete the given number of lines."""
# Set up the screen with 0001, 0002, ..., height
self.prepare()
# Delete two lines starting at the second line, moving subsequent lines up.
esccmd.DL(2)
# Build an array of 0001, 0004, ..., height
height = GetScreenSize().height()
y = 1
expected_lines = []
for i in xrange(height):
if y < 2 or y > 3:
expected_lines.append("%04d" % y)
y += 1
# The last two lines should be blank
expected_lines.append(NUL * 4)
expected_lines.append(NUL * 4)
AssertScreenCharsInRectEqual(Rect(1, 1, 4, height), expected_lines)
