def setUp(self):
self.processor = AnsiCodeProcessor()
class TestAnsiCodeProcessor(unittest.TestCase):
def setUp(self):
self.processor = AnsiCodeProcessor()
def test_clear(self):
""" Do control sequences for clearing the console work?
"""
string = '\x1b[2J\x1b[K'
i = -1
for i, substring in enumerate(self.processor.split_string(string)):
if i == 0:
self.assertEqual(len(self.processor.actions), 1)
action = self.processor.actions[0]
self.assertEqual(action.action, 'erase')
self.assertEqual(action.area, 'screen')
self.assertEqual(action.erase_to, 'all')
elif i == 1:
self.assertEqual(len(self.processor.actions), 1)
action = self.processor.actions[0]
self.assertEqual(action.action, 'erase')
self.assertEqual(action.area, 'line')
self.assertEqual(action.erase_to, 'end')
else:
self.fail('Too many substrings.')
self.assertEqual(i, 1, 'Too few substrings.')
def test_colors(self):
""" Do basic controls sequences for colors work?
"""
string = 'first\x1b[34mblue\x1b[0mlast'
i = -1
for i, substring in enumerate(self.processor.split_string(string)):
if i == 0:
self.assertEqual(substring, 'first')
self.assertEqual(self.processor.foreground_color, None)
elif i == 1:
self.assertEqual(substring, 'blue')
self.assertEqual(self.processor.foreground_color, 4)
elif i == 2:
self.assertEqual(substring, 'last')
self.assertEqual(self.processor.foreground_color, None)
else:
self.fail('Too many substrings.')
self.assertEqual(i, 2, 'Too few substrings.')
def test_colors_xterm(self):
""" Do xterm-specific control sequences for colors work?
"""
string = '\x1b]4;20;rgb:ff/ff/ff\x1b' \
'\x1b]4;25;rgbi:1.0/1.0/1.0\x1b'
substrings = list(self.processor.split_string(string))
desired = { 20 : (255, 255, 255),
25 : (255, 255, 255) }
self.assertEqual(self.processor.color_map, desired)
string = '\x1b[38;5;20m\x1b[48;5;25m'
substrings = list(self.processor.split_string(string))
self.assertEqual(self.processor.foreground_color, 20)
self.assertEqual(self.processor.background_color, 25)
def test_scroll(self):
""" Do control sequences for scrolling the buffer work?
"""
string = '\x1b[5S\x1b[T'
i = -1
for i, substring in enumerate(self.processor.split_string(string)):
if i == 0:
self.assertEqual(len(self.processor.actions), 1)
action = self.processor.actions[0]
self.assertEqual(action.action, 'scroll')
self.assertEqual(action.dir, 'up')
self.assertEqual(action.unit, 'line')
self.assertEqual(action.count, 5)
elif i == 1:
self.assertEqual(len(self.processor.actions), 1)
action = self.processor.actions[0]
self.assertEqual(action.action, 'scroll')
self.assertEqual(action.dir, 'down')
self.assertEqual(action.unit, 'line')
self.assertEqual(action.count, 1)
else:
self.fail('Too many substrings.')
self.assertEqual(i, 1, 'Too few substrings.')
def test_formfeed(self):
""" Are formfeed characters processed correctly?
"""
string = '\f' # form feed
self.assertEqual(list(self.processor.split_string(string)), [''])
self.assertEqual(len(self.processor.actions), 1)
action = self.processor.actions[0]
self.assertEqual(action.action, 'scroll')
self.assertEqual(action.dir, 'down')
self.assertEqual(action.unit, 'page')
self.assertEqual(action.count, 1)
def test_carriage_return(self):
""" Are carriage return characters processed correctly?
"""
string = 'foo\rbar' # carriage return
splits = []
actions = []
for split in self.processor.split_string(string):
splits.append(split)
actions.append([action.action for action in self.processor.actions])
self.assertEqual(splits, ['foo', None, 'bar'])
self.assertEqual(actions, [[], ['carriage-return'], []])
def test_carriage_return_newline(self):
"""transform CRLF to LF"""
string = 'foo\rbar\r\ncat\r\n\n' # carriage return and newline
# only one CR action should occur, and '\r\n' should transform to '\n'
splits = []
actions = []
for split in self.processor.split_string(string):
splits.append(split)
actions.append([action.action for action in self.processor.actions])
self.assertEqual(splits, ['foo', None, 'bar', '\r\n', 'cat', '\r\n', '\n'])
self.assertEqual(actions, [[], ['carriage-return'], [], ['newline'], [], ['newline'], ['newline']])
def test_beep(self):
""" Are beep characters processed correctly?
"""
string = 'foo\abar' # bell
splits = []
actions = []
for split in self.processor.split_string(string):
splits.append(split)
actions.append([action.action for action in self.processor.actions])
self.assertEqual(splits, ['foo', None, 'bar'])
self.assertEqual(actions, [[], ['beep'], []])
def test_backspace(self):
""" Are backspace characters processed correctly?
"""
string = 'foo\bbar' # backspace
splits = []
actions = []
for split in self.processor.split_string(string):
splits.append(split)
actions.append([action.action for action in self.processor.actions])
self.assertEqual(splits, ['foo', None, 'bar'])
self.assertEqual(actions, [[], ['backspace'], []])
def test_combined(self):
""" Are CR and BS characters processed correctly in combination?
BS is treated as a change in print position, rather than a
backwards character deletion. Therefore a BS at EOL is
effectively ignored.
"""
string = 'abc\rdef\b' # CR and backspace
splits = []
actions = []
for split in self.processor.split_string(string):
splits.append(split)
actions.append([action.action for action in self.processor.actions])
self.assertEqual(splits, ['abc', None, 'def', None])
self.assertEqual(actions, [[], ['carriage-return'], [], ['backspace']])
