def test_NEL_MovesDoesNotScrollOutsideLeftRight(self):
"""Cursor moves down but won't scroll when outside left-right region."""
esccmd.DECSTBM(2, 5)
esccmd.DECSET(esccmd.DECLRMM)
esccmd.DECSLRM(2, 5)
esccmd.CUP(Point(3, 5))
escio.Write("x")
# Move past bottom margin but to the right of the left-right region
esccmd.CUP(Point(6, 5))
esccmd.NEL()
# Cursor won't pass bottom or scroll.
AssertEQ(GetCursorPosition(), Point(2, 5))
AssertScreenCharsInRectEqual(Rect(3, 5, 3, 5), ["x"])
# Try to move past the bottom of the screen but to the right of the left-right region
height = GetScreenSize().height()
esccmd.CUP(Point(6, height))
esccmd.NEL()
AssertEQ(GetCursorPosition(), Point(2, height))
AssertScreenCharsInRectEqual(Rect(3, 5, 3, 5), ["x"])
# Move past bottom margin but to the left of the left-right region
esccmd.CUP(Point(1, 5))
esccmd.NEL()
AssertEQ(GetCursorPosition(), Point(1, 5))
AssertScreenCharsInRectEqual(Rect(3, 5, 3, 5), ["x"])
# Try to move past the bottom of the screen but to the left of the left-right region
height = GetScreenSize().height()
esccmd.CUP(Point(1, height))
esccmd.NEL()
AssertEQ(GetCursorPosition(), Point(1, height))
AssertScreenCharsInRectEqual(Rect(3, 5, 3, 5), ["x"])
def test_NEL_ScrollsInTopBottomRegionStartingWithin(self):
"""Next Line scrolls when it hits the bottom region (starting within region)."""
esccmd.DECSTBM(4, 5)
esccmd.CUP(Point(2, 5))
escio.Write("x")
esccmd.CUP(Point(2, 4))
esccmd.NEL() # To 5
esccmd.NEL() # Stay at 5 and scroll x up one line
AssertEQ(GetCursorPosition(), Point(1, 5))
AssertScreenCharsInRectEqual(Rect(2, 4, 2, 5), ["x", empty()])
def test_NEL_Basic(self):
"""Next Line moves the cursor down one line and to the start of the next line."""
esccmd.CUP(Point(5, 3))
esccmd.NEL()
position = GetCursorPosition()
AssertEQ(position.x(), 1)
AssertEQ(position.y(), 4)
def test_NEL_8bit(self):
esccmd.CUP(Point(5, 3))
escio.use8BitControls = True
escio.Write(S8C1T)
esccmd.NEL()
escio.Write(S7C1T)
escio.use8BitControls = False
position = GetCursorPosition()
AssertEQ(position.x(), 1)
AssertEQ(position.y(), 4)
def test_NEL_Scrolls(self):
"""Next Line scrolls when it hits the bottom."""
height = GetScreenSize().height()
# Put a and b on the last two lines.
esccmd.CUP(Point(2, height - 1))
escio.Write("a")
esccmd.CUP(Point(2, height))
escio.Write("b")
# Move to penultimate line.
esccmd.CUP(Point(2, height - 1))
# Move down, ensure no scroll yet.
esccmd.NEL()
AssertEQ(GetCursorPosition(), Point(1, height))
AssertScreenCharsInRectEqual(Rect(2, height - 2, 2, height), [empty(), "a", "b"])
# Move down, ensure scroll.
esccmd.NEL()
AssertEQ(GetCursorPosition(), Point(1, height))
AssertScreenCharsInRectEqual(Rect(2, height - 2, 2, height), ["a", "b", empty()])
def test_NEL_StopsAtBottomLineWhenBegunBelowScrollRegion(self):
"""When the cursor starts below the scroll region, Next Line moves it down to the
bottom of the screen but won't scroll."""
# Set a scroll region. This must be done first because DECSTBM moves the cursor to the origin.
esccmd.DECSTBM(4, 5)
# Position the cursor below the scroll region
esccmd.CUP(Point(1, 6))
escio.Write("x")
# Move it down by a lot
height = GetScreenSize().height()
for _ in xrange(height):
esccmd.NEL()
# Ensure it stopped at the bottom of the screen
AssertEQ(GetCursorPosition(), Point(1, height))
# Ensure no scroll
AssertScreenCharsInRectEqual(Rect(1, 6, 1, 6), ["x"])
