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cpython/Lib/test/test_curses.py
Serhiy Storchaka a75aa418de
[3.15] gh-152415: Exercise curses non-ASCII tests under 8-bit locale encodings (GH-152416) (#152453) 
The non-ASCII tests only exercised what the runner's locale could encode (in
practice UTF-8).  Add 8-bit-encoding cases to the character and string I/O
tests, each guarded by the existing encodability check: ASCII, a character
common to the Latin encodings ('é'), and ones distinctive to a single encoding
(byte 0xA4 is '¤' in ISO-8859-1, '€' in ISO-8859-15, 'є' in KOI8-U).  Run the
whole suite under different locales to cover them; unrepresentable cases skip.



* gh-152415: Verify character output round-trips in test_output_character

Read each written character back with in_wch() or instr() rather than
inch(), which on a wide build returns the low byte of the code point
instead of the locale-encoded byte and so mangles a non-ASCII character
of an 8-bit locale.  This lets the int-argument cases cover '€'/'є', and
adds matching coverage for the str argument.

insch() with an int byte > 127 is checked only for Latin-1: on a wide
build ncurses winsch stores a printable byte directly as a code point
instead of decoding it through the locale.
(cherry picked from commit 003d3620cc)

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-27 20:40:13 +00:00

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import functools
import inspect
import os
import string
import sys
import tempfile
import unittest
from unittest.mock import MagicMock
from test.support import (requires, verbose, SaveSignals, cpython_only,
check_disallow_instantiation, MISSING_C_DOCSTRINGS,
gc_collect)
from test.support.import_helper import import_module
# Optionally test curses module. This currently requires that the
# 'curses' resource be given on the regrtest command line using the -u
# option. If not available, nothing after this line will be executed.
requires('curses')
# If either of these don't exist, skip the tests.
curses = import_module('curses')
import_module('curses.ascii')
import_module('curses.textpad')
try:
import curses.panel
except ImportError:
pass
def requires_curses_func(name):
return unittest.skipUnless(hasattr(curses, name),
'requires curses.%s' % name)
def requires_curses_window_meth(name):
def deco(test):
@functools.wraps(test)
def wrapped(self, *args, **kwargs):
if not hasattr(self.stdscr, name):
raise unittest.SkipTest('requires curses.window.%s' % name)
test(self, *args, **kwargs)
return wrapped
return deco
def requires_colors(test):
@functools.wraps(test)
def wrapped(self, *args, **kwargs):
if not curses.has_colors():
self.skipTest('requires colors support')
curses.start_color()
test(self, *args, **kwargs)
return wrapped
term = os.environ.get('TERM')
SHORT_MAX = 0x7fff
# If newterm was supported we could use it instead of initscr and not exit
@unittest.skipIf(not term or term == 'unknown',
"$TERM=%r, calling initscr() may cause exit" % term)
@unittest.skipIf(sys.platform == "cygwin",
"cygwin's curses mostly just hangs")
class TestCurses(unittest.TestCase):
@classmethod
def setUpClass(cls):
if verbose:
print(f'TERM={term}', file=sys.stderr, flush=True)
# testing setupterm() inside initscr/endwin
# causes terminal breakage
stdout_fd = sys.__stdout__.fileno()
curses.setupterm(fd=stdout_fd)
def setUp(self):
self.isatty = True
self.output = sys.__stdout__
stdout_fd = sys.__stdout__.fileno()
if not sys.__stdout__.isatty():
# initstr() unconditionally uses C stdout.
# If it is redirected to file or pipe, try to attach it
# to terminal.
# First, save a copy of the file descriptor of stdout, so it
# can be restored after finishing the test.
dup_fd = os.dup(stdout_fd)
self.addCleanup(os.close, dup_fd)
self.addCleanup(os.dup2, dup_fd, stdout_fd)
if sys.__stderr__.isatty():
# If stderr is connected to terminal, use it.
tmp = sys.__stderr__
self.output = sys.__stderr__
else:
try:
# Try to open the terminal device.
tmp = open('/dev/tty', 'wb', buffering=0)
except OSError:
# As a fallback, use regular file to write control codes.
# Some functions (like savetty) will not work, but at
# least the garbage control sequences will not be mixed
# with the testing report.
tmp = tempfile.TemporaryFile(mode='wb', buffering=0)
self.isatty = False
self.addCleanup(tmp.close)
self.output = None
os.dup2(tmp.fileno(), stdout_fd)
self.save_signals = SaveSignals()
self.save_signals.save()
self.addCleanup(self.save_signals.restore)
if verbose and self.output is not None:
# just to make the test output a little more readable
sys.stderr.flush()
sys.stdout.flush()
print(file=self.output, flush=True)
self.stdscr = curses.initscr()
if self.isatty:
curses.savetty()
self.addCleanup(curses.endwin)
self.addCleanup(curses.resetty)
self.stdscr.erase()
@requires_curses_func('filter')
def test_filter(self):
# TODO: Should be called before initscr() or newterm() are called.
# TODO: nofilter()
curses.filter()
@requires_curses_func('use_env')
def test_use_env(self):
# TODO: Should be called before initscr() or newterm() are called.
# TODO: use_tioctl()
curses.use_env(False)
curses.use_env(True)
def test_error(self):
self.assertIsSubclass(curses.error, Exception)
def test_create_windows(self):
win = curses.newwin(5, 10)
self.assertEqual(win.getbegyx(), (0, 0))
self.assertEqual(win.getparyx(), (-1, -1))
self.assertEqual(win.getmaxyx(), (5, 10))
win = curses.newwin(10, 15, 2, 5)
self.assertEqual(win.getbegyx(), (2, 5))
self.assertEqual(win.getparyx(), (-1, -1))
self.assertEqual(win.getmaxyx(), (10, 15))
win2 = win.subwin(3, 7)
self.assertEqual(win2.getbegyx(), (3, 7))
self.assertEqual(win2.getparyx(), (1, 2))
self.assertEqual(win2.getmaxyx(), (9, 13))
win2 = win.subwin(5, 10, 3, 7)
self.assertEqual(win2.getbegyx(), (3, 7))
self.assertEqual(win2.getparyx(), (1, 2))
self.assertEqual(win2.getmaxyx(), (5, 10))
win3 = win.derwin(2, 3)
self.assertEqual(win3.getbegyx(), (4, 8))
self.assertEqual(win3.getparyx(), (2, 3))
self.assertEqual(win3.getmaxyx(), (8, 12))
win3 = win.derwin(6, 11, 2, 3)
self.assertEqual(win3.getbegyx(), (4, 8))
self.assertEqual(win3.getparyx(), (2, 3))
self.assertEqual(win3.getmaxyx(), (6, 11))
win.mvwin(0, 1)
self.assertEqual(win.getbegyx(), (0, 1))
self.assertEqual(win.getparyx(), (-1, -1))
self.assertEqual(win.getmaxyx(), (10, 15))
self.assertEqual(win2.getbegyx(), (3, 7))
self.assertEqual(win2.getparyx(), (1, 2))
self.assertEqual(win2.getmaxyx(), (5, 10))
self.assertEqual(win3.getbegyx(), (4, 8))
self.assertEqual(win3.getparyx(), (2, 3))
self.assertEqual(win3.getmaxyx(), (6, 11))
win2.mvderwin(2, 1)
self.assertEqual(win2.getbegyx(), (3, 7))
self.assertEqual(win2.getparyx(), (2, 1))
self.assertEqual(win2.getmaxyx(), (5, 10))
win3.mvderwin(2, 1)
self.assertEqual(win3.getbegyx(), (4, 8))
self.assertEqual(win3.getparyx(), (2, 1))
self.assertEqual(win3.getmaxyx(), (6, 11))
def test_subwindows_references(self):
win = curses.newwin(5, 10)
win2 = win.subwin(3, 7)
del win
gc_collect()
del win2
gc_collect()
def test_move_cursor(self):
stdscr = self.stdscr
win = stdscr.subwin(10, 15, 2, 5)
stdscr.move(1, 2)
win.move(2, 4)
self.assertEqual(stdscr.getyx(), (1, 2))
self.assertEqual(win.getyx(), (2, 4))
win.cursyncup()
self.assertEqual(stdscr.getyx(), (4, 9))
def test_refresh_control(self):
stdscr = self.stdscr
# touchwin()/untouchwin()/is_wintouched()
stdscr.refresh()
self.assertIs(stdscr.is_wintouched(), False)
stdscr.touchwin()
self.assertIs(stdscr.is_wintouched(), True)
stdscr.refresh()
self.assertIs(stdscr.is_wintouched(), False)
stdscr.touchwin()
self.assertIs(stdscr.is_wintouched(), True)
stdscr.untouchwin()
self.assertIs(stdscr.is_wintouched(), False)
# touchline()/untouchline()/is_linetouched()
stdscr.touchline(5, 2)
self.assertIs(stdscr.is_linetouched(5), True)
self.assertIs(stdscr.is_linetouched(6), True)
self.assertIs(stdscr.is_wintouched(), True)
stdscr.touchline(5, 1, False)
self.assertIs(stdscr.is_linetouched(5), False)
# syncup()
win = stdscr.subwin(10, 15, 2, 5)
win2 = win.subwin(5, 10, 3, 7)
win2.touchwin()
stdscr.untouchwin()
win2.syncup()
self.assertIs(win.is_wintouched(), True)
self.assertIs(stdscr.is_wintouched(), True)
# syncdown()
stdscr.touchwin()
win.untouchwin()
win2.untouchwin()
win2.syncdown()
self.assertIs(win2.is_wintouched(), True)
# syncok()
if hasattr(stdscr, 'syncok') and not sys.platform.startswith("sunos"):
win.untouchwin()
stdscr.untouchwin()
for syncok in [False, True]:
win2.syncok(syncok)
win2.addch('a')
self.assertIs(win.is_wintouched(), syncok)
self.assertIs(stdscr.is_wintouched(), syncok)
# Many tests below use a common set of non-ASCII cases, each applied only
# when the window encoding can represent it -- so the whole suite is meant to
# be run under several locales (e.g. ISO-8859-1, ISO-8859-15, KOI8-U):
# 'A'/'a' ASCII
# 'é' common to the Latin encodings
# '¤'/'€'/'є' byte 0xA4 in ISO-8859-1 / ISO-8859-15 / KOI8-U
# Precomposed characters are used so a round-trip does not depend on the form.
def _encodable(self, s):
# Wide characters are only supported in a locale that can encode them.
try:
s.encode(self.stdscr.encoding)
except UnicodeEncodeError:
return False
return True
def _read_char(self, y, x):
# The character written to a cell, read back for output checks. inch()
# is unusable here: on a wide build it returns the low 8 bits of the
# character's code point rather than its locale-encoded byte, mangling
# anything outside Latin-1. in_wch() reads the wide cell directly;
# without it, instr() re-encodes the cell to the window encoding.
stdscr = self.stdscr
if hasattr(stdscr, 'in_wch'):
return str(stdscr.in_wch(y, x))
return stdscr.instr(y, x, 1).decode(stdscr.encoding)
def test_output_character(self):
stdscr = self.stdscr
encoding = stdscr.encoding
# addch()
stdscr.refresh()
stdscr.move(0, 0)
stdscr.addch('A')
stdscr.addch(b'A')
stdscr.addch(65)
# See _encodable for the character set. Each is either written (mapped
# to a single byte), or raises UnicodeEncodeError (not in the encoding)
# or OverflowError (a multibyte sequence, e.g. in UTF-8).
for c in ('A', '\u00e9', '\u00a4', '\u20ac', '\u0454'):
try:
stdscr.addch(c)
except UnicodeEncodeError:
self.assertRaises(UnicodeEncodeError, c.encode, encoding)
except OverflowError:
encoded = c.encode(encoding)
self.assertNotEqual(len(encoded), 1, repr(encoded))
stdscr.addch('A', curses.A_BOLD)
stdscr.addch(1, 2, 'A')
stdscr.addch(2, 3, 'A', curses.A_BOLD)
self.assertIs(stdscr.is_wintouched(), True)
# The same characters supplied as an int chtype (a byte > 127). The
# cell is read back with _read_char(), not inch(): on a wide build the
# int is stored through the locale as a wide character that inch()
# cannot represent for a character outside Latin-1.
for c in ('é', '¤', '€', 'є'):
try:
b = c.encode(encoding)
except UnicodeEncodeError:
continue
if len(b) != 1:
continue
# A wide build stores a character outside Latin-1 as a wide cell,
# not as its encoded byte, so it cannot round-trip here.
if ord(c) > 0xff and hasattr(stdscr, 'get_wch'):
continue
v = b[0]
with self.subTest(c=c):
stdscr.addch(0, 0, v)
self.assertEqual(self._read_char(0, 0), c)
stdscr.addch(0, 1, v, curses.A_BOLD)
self.assertEqual(self._read_char(0, 1), c)
self.assertTrue(stdscr.inch(0, 1) & curses.A_BOLD)
stdscr.move(2, 0)
stdscr.echochar(v)
self.assertEqual(self._read_char(2, 0), c)
# insch() round-trips a byte only where its code point equals
# the byte value (Latin-1): on a wide build ncurses winsch
# stores a printable byte directly as a code point instead of
# decoding it through the locale.
if ord(c) < 0x100:
stdscr.insch(1, 0, v)
self.assertEqual(self._read_char(1, 0), c)
# The same characters supplied as a str. Unlike the int path above, a
# str is stored as a wide-character cell on a wide build, so every
# encodable character round-trips, insch() included. A multibyte
# character does not fit a cell on a narrow build and is skipped.
wide = hasattr(stdscr, 'in_wch')
for c in ('é', '¤', '€', 'є'):
if not self._encodable(c):
continue
if not wide and len(c.encode(encoding)) != 1:
continue
# A wide build stores a character outside Latin-1 as a wide cell,
# not as its encoded byte, so it cannot round-trip here.
if ord(c) > 0xff and hasattr(stdscr, 'get_wch'):
continue
with self.subTest(c=c):
stdscr.addch(0, 0, c)
self.assertEqual(self._read_char(0, 0), c)
stdscr.addch(0, 1, c, curses.A_BOLD)
self.assertEqual(self._read_char(0, 1), c)
self.assertTrue(stdscr.inch(0, 1) & curses.A_BOLD)
stdscr.insch(1, 0, c)
self.assertEqual(self._read_char(1, 0), c)
stdscr.move(2, 0)
stdscr.echochar(c)
self.assertEqual(self._read_char(2, 0), c)
# echochar()
stdscr.refresh()
stdscr.move(0, 0)
stdscr.echochar('A')
stdscr.echochar(b'A')
stdscr.echochar(65)
# See _encodable for the character set; as in the addch() loop above.
for c in ('A', '\u00e9', '\u00a4', '\u20ac', '\u0454'):
try:
stdscr.echochar(c)
except UnicodeEncodeError:
# The character is not encodable with the current encoding.
self.assertRaises(UnicodeEncodeError, c.encode, encoding)
except OverflowError:
# The character is encoded to a multibyte sequence.
encoded = c.encode(encoding)
self.assertNotEqual(len(encoded), 1, repr(encoded))
stdscr.echochar('A', curses.A_BOLD)
self.assertIs(stdscr.is_wintouched(), False)
def test_output_string(self):
stdscr = self.stdscr
encoding = stdscr.encoding
# addstr()/insstr()
for func in [stdscr.addstr, stdscr.insstr]:
with self.subTest(func.__qualname__):
func('abcd')
func(b'abcd')
# Common and encoding-distinctive strings (see _encodable for the
# 0xA4 set); 'àßçđ' is UTF-8-only. Each is written if the
# encoding allows, else raises UnicodeEncodeError.
for s in ('soupçon', 'àßçđ', 'soupçon ¤', 'soupçon €', 'дякую'):
stdscr.move(0, 0)
try:
func(s)
except UnicodeEncodeError:
self.assertRaises(UnicodeEncodeError, s.encode, encoding)
stdscr.move(0, 0)
func('abcd', curses.A_BOLD)
func(1, 2, 'abcd')
func(2, 3, 'abcd', curses.A_BOLD)
# addnstr()/insnstr()
for func in [stdscr.addnstr, stdscr.insnstr]:
with self.subTest(func.__qualname__):
stdscr.move(0, 0)
func('1234', 3)
func(b'1234', 3)
# As above (see _encodable); Arabic-Indic digits are UTF-8-only.
for s in ('caf\u00e9', '\u0661\u0662\u0663\u0664', 'caf\u00e9 \u00a4', 'caf\u00e9 \u20ac', '\u0434\u044f\u043a\u0443\u044e'):
stdscr.move(0, 0)
try:
func(s, 3)
except UnicodeEncodeError:
self.assertRaises(UnicodeEncodeError, s.encode, encoding)
stdscr.move(0, 0)
func('1234', 5)
func('1234', 3, curses.A_BOLD)
func(1, 2, '1234', 3)
func(2, 3, '1234', 3, curses.A_BOLD)
def test_output_string_embedded_null_chars(self):
# reject embedded null bytes and characters
stdscr = self.stdscr
for arg in ['a\0', b'a\0']:
with self.subTest(arg=arg):
self.assertRaises(ValueError, stdscr.addstr, arg)
self.assertRaises(ValueError, stdscr.addnstr, arg, 1)
self.assertRaises(ValueError, stdscr.insstr, arg)
self.assertRaises(ValueError, stdscr.insnstr, arg, 1)
def test_add_string_behavior(self):
# addstr() advances the cursor past the written text; addnstr()
# writes at most n characters.
win = curses.newwin(1, 10, 0, 0)
win.addstr(0, 0, 'abc')
self.assertEqual(win.getyx(), (0, 3))
win.erase()
win.addnstr(0, 0, 'abcdef', 3)
self.assertEqual(win.instr(0, 0), b'abc ')
def test_insert_string_behavior(self):
# insstr()/insnstr() insert at the cursor, shift the rest of the
# line right (losing characters off the edge), and leave the cursor
# where it was.
win = curses.newwin(1, 10, 0, 0)
win.addstr(0, 0, 'abcde')
win.move(0, 1)
win.insstr('XY')
self.assertEqual(win.getyx(), (0, 1)) # cursor did not advance
self.assertEqual(win.instr(0, 0), b'aXYbcde ')
win.erase()
win.addstr(0, 0, 'ZZZZZ')
win.move(0, 0)
win.insnstr('abcdef', 3) # at most 3 characters
self.assertEqual(win.instr(0, 0), b'abcZZZZZ ')
def test_insch(self):
# insch() inserts a single character at the cursor (or at y, x),
# shifting the rest of the line right.
win = curses.newwin(2, 10, 0, 0)
win.addstr(0, 0, 'abc')
win.move(0, 1)
win.insch(ord('X'))
self.assertEqual(win.instr(0, 0), b'aXbc ')
win.insch(1, 0, 'Y', curses.A_BOLD)
self.assertEqual(win.inch(1, 0), b'Y'[0] | curses.A_BOLD)
def test_pad(self):
pad = curses.newpad(10, 20)
pad.addstr(0, 0, 'PADTEXT')
self.assertEqual(pad.instr(0, 0, 7), b'PADTEXT')
# subpad() creates a pad within the parent pad. Cell sharing with
# the parent is implementation-defined, so write to the subpad itself.
sub = pad.subpad(3, 5, 0, 0)
self.assertEqual(sub.getmaxyx(), (3, 5))
sub.addstr(1, 0, 'sub')
self.assertEqual(sub.instr(1, 0, 3), b'sub')
# A pad is refreshed onto an explicit screen rectangle; the
# 6-argument form is required (and rejected for ordinary windows).
pad.refresh(0, 0, 0, 0, 4, 10)
pad.noutrefresh(0, 0, 0, 0, 4, 10)
curses.doupdate()
self.assertRaises(TypeError, pad.refresh)
win = curses.newwin(5, 5, 0, 0)
self.assertRaises(TypeError, win.refresh, 0, 0, 0, 0, 4, 4)
def test_read_from_window(self):
stdscr = self.stdscr
stdscr.addstr(0, 1, 'ABCD', curses.A_BOLD)
# inch()
stdscr.move(0, 1)
self.assertEqual(stdscr.inch(), 65 | curses.A_BOLD)
self.assertEqual(stdscr.inch(0, 3), 67 | curses.A_BOLD)
stdscr.move(0, 0)
# instr()
self.assertEqual(stdscr.instr()[:6], b' ABCD ')
self.assertEqual(stdscr.instr(3)[:6], b' AB')
self.assertEqual(stdscr.instr(0, 2)[:4], b'BCD ')
self.assertEqual(stdscr.instr(0, 2, 4), b'BCD ')
self.assertRaises(ValueError, stdscr.instr, -2)
self.assertRaises(ValueError, stdscr.instr, 0, 2, -2)
# A non-ASCII character of an 8-bit locale reads back as its encoded
# byte (see _encodable for the set). instr() returns the locale bytes
# for any single-byte character; inch() packs the text into a chtype, so
# on a wide build it only round-trips a Latin-1 codepoint (byte ==
# codepoint).
encoding = stdscr.encoding
for ch in ('A', 'é', '¤', '€', 'є'):
try:
b = ch.encode(encoding)
except UnicodeEncodeError:
continue
if len(b) != 1:
continue
with self.subTest(ch=ch):
stdscr.addstr(2, 0, ch)
self.assertEqual(stdscr.instr(2, 0, 1), b)
if ord(ch) < 0x100:
self.assertEqual(stdscr.inch(2, 0) & curses.A_CHARTEXT, b[0])
def test_coordinate_errors(self):
# Addressing a cell outside the window raises curses.error.
win = curses.newwin(5, 10, 0, 0)
self.assertRaises(curses.error, win.move, 100, 100)
self.assertRaises(curses.error, win.move, -1, -1)
self.assertRaises(curses.error, win.addch, 100, 100, ord('x'))
self.assertRaises(curses.error, win.inch, 100, 100)
if hasattr(win, 'chgat'): # chgat() requires wchgat()
self.assertRaises(curses.error, win.chgat, 100, 0, curses.A_BOLD)
def test_argument_errors(self):
win = curses.newwin(5, 10, 0, 0)
# A character argument must be an int, a byte or a one-element string.
self.assertRaises(TypeError, win.addch, [])
self.assertRaises(OverflowError, win.addch, 2**64)
# A string method rejects a non-string, non-bytes argument.
self.assertRaises(TypeError, win.addstr, 5)
self.assertRaises(TypeError, win.addstr)
# Wrong number of positional arguments.
self.assertRaises(TypeError, win.instr, 0, 0, 0, 0)
def test_getch(self):
win = curses.newwin(5, 12, 5, 2)
# TODO: Test with real input by writing to master fd.
for c in 'spam\n'[::-1]:
curses.ungetch(c)
self.assertEqual(win.getch(3, 1), b's'[0])
self.assertEqual(win.getyx(), (3, 1))
self.assertEqual(win.getch(3, 4), b'p'[0])
self.assertEqual(win.getyx(), (3, 4))
self.assertEqual(win.getch(), b'a'[0])
self.assertEqual(win.getyx(), (3, 4))
self.assertEqual(win.getch(), b'm'[0])
self.assertEqual(win.getch(), b'\n'[0])
# A key value > 127 is delivered unchanged (it is not locale text).
curses.ungetch(0xE9)
self.assertEqual(win.getch(), 0xE9)
def test_getstr(self):
win = curses.newwin(5, 12, 5, 2)
curses.echo()
self.addCleanup(curses.noecho)
self.assertRaises(ValueError, win.getstr, -400)
self.assertRaises(ValueError, win.getstr, 2, 3, -400)
# TODO: Test with real input by writing to master fd.
for c in 'Lorem\nipsum\ndolor\nsit\namet\n'[::-1]:
curses.ungetch(c)
self.assertEqual(win.getstr(3, 1, 2), b'Lo')
self.assertEqual(win.instr(3, 0), b' Lo ')
self.assertEqual(win.getstr(3, 5, 10), b'ipsum')
self.assertEqual(win.instr(3, 0), b' Lo ipsum ')
self.assertEqual(win.getstr(1, 5), b'dolor')
self.assertEqual(win.instr(1, 0), b' dolor ')
self.assertEqual(win.getstr(2), b'si')
self.assertEqual(win.instr(1, 0), b'si dolor ')
self.assertEqual(win.getstr(), b'amet')
self.assertEqual(win.instr(1, 0), b'amet dolor ')
def test_clear(self):
win = curses.newwin(5, 15, 5, 2)
lorem_ipsum(win)
win.move(0, 8)
win.clrtoeol()
self.assertEqual(win.instr(0, 0).rstrip(), b'Lorem ip')
self.assertEqual(win.instr(1, 0).rstrip(), b'dolor sit amet,')
win.move(0, 3)
win.clrtobot()
self.assertEqual(win.instr(0, 0).rstrip(), b'Lor')
self.assertEqual(win.instr(1, 0).rstrip(), b'')
for func in [win.erase, win.clear]:
lorem_ipsum(win)
func()
self.assertEqual(win.instr(0, 0).rstrip(), b'')
self.assertEqual(win.instr(1, 0).rstrip(), b'')
def test_insert_delete(self):
win = curses.newwin(5, 15, 5, 2)
lorem_ipsum(win)
win.move(0, 2)
win.delch()
self.assertEqual(win.instr(0, 0), b'Loem ipsum ')
win.delch(0, 7)
self.assertEqual(win.instr(0, 0), b'Loem ipum ')
win.move(1, 5)
win.deleteln()
self.assertEqual(win.instr(0, 0), b'Loem ipum ')
self.assertEqual(win.instr(1, 0), b'consectetur ')
self.assertEqual(win.instr(2, 0), b'adipiscing elit')
self.assertEqual(win.instr(3, 0), b'sed do eiusmod ')
self.assertEqual(win.instr(4, 0), b' ')
win.move(1, 5)
win.insertln()
self.assertEqual(win.instr(0, 0), b'Loem ipum ')
self.assertEqual(win.instr(1, 0), b' ')
self.assertEqual(win.instr(2, 0), b'consectetur ')
win.clear()
lorem_ipsum(win)
win.move(1, 5)
win.insdelln(2)
self.assertEqual(win.instr(0, 0), b'Lorem ipsum ')
self.assertEqual(win.instr(1, 0), b' ')
self.assertEqual(win.instr(2, 0), b' ')
self.assertEqual(win.instr(3, 0), b'dolor sit amet,')
win.clear()
lorem_ipsum(win)
win.move(1, 5)
win.insdelln(-2)
self.assertEqual(win.instr(0, 0), b'Lorem ipsum ')
self.assertEqual(win.instr(1, 0), b'adipiscing elit')
self.assertEqual(win.instr(2, 0), b'sed do eiusmod ')
self.assertEqual(win.instr(3, 0), b' ')
def test_scroll(self):
win = curses.newwin(5, 15, 5, 2)
lorem_ipsum(win)
win.scrollok(True)
win.scroll()
self.assertEqual(win.instr(0, 0), b'dolor sit amet,')
win.scroll(2)
self.assertEqual(win.instr(0, 0), b'adipiscing elit')
win.scroll(-3)
self.assertEqual(win.instr(0, 0), b' ')
self.assertEqual(win.instr(2, 0), b' ')
self.assertEqual(win.instr(3, 0), b'adipiscing elit')
win.scrollok(False)
def test_attributes(self):
# TODO: attr_get(), attr_set(), ...
win = curses.newwin(5, 15, 5, 2)
win.attron(curses.A_BOLD)
win.attroff(curses.A_BOLD)
win.attrset(curses.A_BOLD)
win.standout()
win.standend()
@requires_curses_window_meth('chgat')
def test_chgat(self):
win = curses.newwin(5, 15, 5, 2)
win.addstr(2, 0, 'Lorem ipsum')
win.addstr(3, 0, 'dolor sit amet')
win.move(2, 8)
win.chgat(curses.A_BLINK)
self.assertEqual(win.inch(2, 7), b'p'[0])
self.assertEqual(win.inch(2, 8), b's'[0] | curses.A_BLINK)
self.assertEqual(win.inch(2, 14), b' '[0] | curses.A_BLINK)
win.move(2, 1)
win.chgat(3, curses.A_BOLD)
self.assertEqual(win.inch(2, 0), b'L'[0])
self.assertEqual(win.inch(2, 1), b'o'[0] | curses.A_BOLD)
self.assertEqual(win.inch(2, 3), b'e'[0] | curses.A_BOLD)
self.assertEqual(win.inch(2, 4), b'm'[0])
win.chgat(3, 2, curses.A_UNDERLINE)
self.assertEqual(win.inch(3, 1), b'o'[0])
self.assertEqual(win.inch(3, 2), b'l'[0] | curses.A_UNDERLINE)
self.assertEqual(win.inch(3, 14), b' '[0] | curses.A_UNDERLINE)
win.chgat(3, 4, 7, curses.A_BLINK)
self.assertEqual(win.inch(3, 3), b'o'[0] | curses.A_UNDERLINE)
self.assertEqual(win.inch(3, 4), b'r'[0] | curses.A_BLINK)
self.assertEqual(win.inch(3, 10), b'a'[0] | curses.A_BLINK)
self.assertEqual(win.inch(3, 11), b'm'[0] | curses.A_UNDERLINE)
self.assertEqual(win.inch(3, 14), b' '[0] | curses.A_UNDERLINE)
def test_background(self):
win = curses.newwin(5, 15, 5, 2)
win.addstr(0, 0, 'Lorem ipsum')
self.assertIn(win.getbkgd(), (0, 32))
# bkgdset()
win.bkgdset('_')
self.assertEqual(win.getbkgd(), b'_'[0])
win.bkgdset(b'#')
self.assertEqual(win.getbkgd(), b'#'[0])
win.bkgdset(65)
self.assertEqual(win.getbkgd(), 65)
win.bkgdset(0)
self.assertEqual(win.getbkgd(), 32)
win.bkgdset('#', curses.A_REVERSE)
self.assertEqual(win.getbkgd(), b'#'[0] | curses.A_REVERSE)
self.assertEqual(win.inch(0, 0), b'L'[0])
self.assertEqual(win.inch(0, 5), b' '[0])
win.bkgdset(0)
# bkgd()
win.bkgd('_')
self.assertEqual(win.getbkgd(), b'_'[0])
self.assertEqual(win.inch(0, 0), b'L'[0])
self.assertEqual(win.inch(0, 5), b'_'[0])
win.bkgd('#', curses.A_REVERSE)
self.assertEqual(win.getbkgd(), b'#'[0] | curses.A_REVERSE)
self.assertEqual(win.inch(0, 0), b'L'[0] | curses.A_REVERSE)
self.assertEqual(win.inch(0, 5), b'#'[0] | curses.A_REVERSE)
# A non-ASCII background character of an 8-bit locale reads back as its
# encoded byte. See _encodable for the character set.
win.bkgd(' ')
encoding = win.encoding
for ch in ('é', '¤', '€', 'є'):
try:
b = ch.encode(encoding)
except UnicodeEncodeError:
continue
if len(b) != 1:
continue
# A wide build stores a character outside Latin-1 as a wide cell,
# not as its encoded byte, so it cannot round-trip here.
if ord(ch) > 0xff and hasattr(win, 'get_wch'):
continue
with self.subTest(ch=ch):
win.bkgd(ch)
self.assertEqual(win.getbkgd(), b[0])
if ord(ch) < 0x100:
# The same byte given as an int. A wide build stores it
# through the locale, so only a Latin-1 byte round-trips.
win.bkgd(' ')
win.bkgdset(b[0])
self.assertEqual(win.getbkgd(), b[0])
win.bkgd(b[0])
self.assertEqual(win.getbkgd(), b[0])
def test_overlay(self):
srcwin = curses.newwin(5, 18, 3, 4)
lorem_ipsum(srcwin)
dstwin = curses.newwin(7, 17, 5, 7)
for i in range(6):
dstwin.addstr(i, 0, '_'*17)
srcwin.overlay(dstwin)
self.assertEqual(dstwin.instr(0, 0), b'sectetur_________')
self.assertEqual(dstwin.instr(1, 0), b'piscing_elit,____')
self.assertEqual(dstwin.instr(2, 0), b'_do_eiusmod______')
self.assertEqual(dstwin.instr(3, 0), b'_________________')
srcwin.overwrite(dstwin)
self.assertEqual(dstwin.instr(0, 0), b'sectetur __')
self.assertEqual(dstwin.instr(1, 0), b'piscing elit, __')
self.assertEqual(dstwin.instr(2, 0), b' do eiusmod __')
self.assertEqual(dstwin.instr(3, 0), b'_________________')
srcwin.overlay(dstwin, 1, 4, 3, 2, 4, 11)
self.assertEqual(dstwin.instr(3, 0), b'__r_sit_amet_____')
self.assertEqual(dstwin.instr(4, 0), b'__ectetur________')
self.assertEqual(dstwin.instr(5, 0), b'_________________')
srcwin.overwrite(dstwin, 1, 4, 3, 2, 4, 11)
self.assertEqual(dstwin.instr(3, 0), b'__r sit amet_____')
self.assertEqual(dstwin.instr(4, 0), b'__ectetur _____')
self.assertEqual(dstwin.instr(5, 0), b'_________________')
def test_refresh(self):
win = curses.newwin(5, 15, 2, 5)
win.noutrefresh()
win.redrawln(1, 2)
win.redrawwin()
win.refresh()
curses.doupdate()
@requires_curses_window_meth('resize')
def test_resize(self):
win = curses.newwin(5, 15, 2, 5)
win.resize(4, 20)
self.assertEqual(win.getmaxyx(), (4, 20))
win.resize(5, 15)
self.assertEqual(win.getmaxyx(), (5, 15))
@requires_curses_window_meth('enclose')
def test_enclose(self):
win = curses.newwin(5, 15, 2, 5)
self.assertIs(win.enclose(2, 5), True)
self.assertIs(win.enclose(1, 5), False)
self.assertIs(win.enclose(2, 4), False)
self.assertIs(win.enclose(6, 19), True)
self.assertIs(win.enclose(7, 19), False)
self.assertIs(win.enclose(6, 20), False)
def test_putwin(self):
win = curses.newwin(5, 12, 1, 2)
win.addstr(2, 1, 'Lorem ipsum')
with tempfile.TemporaryFile() as f:
win.putwin(f)
del win
f.seek(0)
win = curses.getwin(f)
self.assertEqual(win.getbegyx(), (1, 2))
self.assertEqual(win.getmaxyx(), (5, 12))
self.assertEqual(win.instr(2, 0), b' Lorem ipsum')
def test_borders_and_lines(self):
win = curses.newwin(5, 10, 5, 2)
win.border('|', '!', '-', '_',
'+', '\\', '#', '/')
self.assertEqual(win.instr(0, 0), b'+--------\\')
self.assertEqual(win.instr(1, 0), b'| !')
self.assertEqual(win.instr(4, 0), b'#________/')
win.border(b'|', b'!', b'-', b'_',
b'+', b'\\', b'#', b'/')
win.border(65, 66, 67, 68,
69, 70, 71, 72)
self.assertRaises(TypeError, win.border,
65, 66, 67, 68, 69, [], 71, 72)
self.assertRaises(TypeError, win.border,
65, 66, 67, 68, 69, 70, 71, 72, 73)
self.assertRaises(TypeError, win.border,
65, 66, 67, 68, 69, 70, 71, 72, 73)
win.border(65, 66, 67, 68, 69, 70, 71)
win.border(65, 66, 67, 68, 69, 70)
win.border(65, 66, 67, 68, 69)
win.border(65, 66, 67, 68)
win.border(65, 66, 67)
win.border(65, 66)
win.border(65)
win.border()
# With no arguments, border() fills the edges with ACS line and corner
# characters.
chartext = curses.A_CHARTEXT
maxy, maxx = win.getmaxyx()
self.assertEqual(win.inch(0, 0) & chartext, curses.ACS_ULCORNER & chartext)
self.assertEqual(win.inch(0, maxx-1) & chartext, curses.ACS_URCORNER & chartext)
self.assertEqual(win.inch(maxy-1, 0) & chartext, curses.ACS_LLCORNER & chartext)
self.assertEqual(win.inch(maxy-1, maxx-1) & chartext, curses.ACS_LRCORNER & chartext)
self.assertEqual(win.inch(0, 1) & chartext, curses.ACS_HLINE & chartext)
self.assertEqual(win.inch(1, 0) & chartext, curses.ACS_VLINE & chartext)
win.box(':', '~')
self.assertEqual(win.instr(0, 1, 8), b'~~~~~~~~')
self.assertEqual(win.instr(1, 0), b': :')
self.assertEqual(win.instr(4, 1, 8), b'~~~~~~~~')
win.box(b':', b'~')
win.box(65, 67)
self.assertRaises(TypeError, win.box, 65, 66, 67)
self.assertRaises(TypeError, win.box, 65)
win.box()
# With no arguments, box() likewise draws ACS corners and lines.
self.assertEqual(win.inch(0, 0) & chartext, curses.ACS_ULCORNER & chartext)
self.assertEqual(win.inch(0, maxx-1) & chartext, curses.ACS_URCORNER & chartext)
self.assertEqual(win.inch(0, 1) & chartext, curses.ACS_HLINE & chartext)
self.assertEqual(win.inch(1, 0) & chartext, curses.ACS_VLINE & chartext)
win.move(1, 2)
win.hline('-', 5)
self.assertEqual(win.instr(1, 1, 7), b' ----- ')
win.hline(b'-', 5)
win.hline(45, 5)
win.hline('-', 5, curses.A_BOLD)
win.hline(1, 1, '-', 5)
win.hline(1, 1, '-', 5, curses.A_BOLD)
win.move(1, 2)
win.vline('a', 3)
win.vline(b'a', 3)
win.vline(97, 3)
win.vline('a', 3, curses.A_STANDOUT)
win.vline(1, 1, 'a', 3)
win.vline(1, 1, ';', 2, curses.A_STANDOUT)
self.assertEqual(win.inch(1, 1), b';'[0] | curses.A_STANDOUT)
self.assertEqual(win.inch(2, 1), b';'[0] | curses.A_STANDOUT)
self.assertEqual(win.inch(3, 1), b'a'[0])
# A border or line character of an 8-bit locale round-trips as its
# encoded byte. See _encodable for the character set.
encoding = win.encoding
for ch in ('é', '¤', '€', 'є'):
try:
b = ch.encode(encoding)
except UnicodeEncodeError:
continue
if len(b) != 1:
continue
# A wide build stores a character outside Latin-1 as a wide cell,
# not as its encoded byte, so it cannot round-trip here.
if ord(ch) > 0xff and hasattr(win, 'get_wch'):
continue
with self.subTest(ch=ch):
win.erase()
win.hline(2, 0, ch, 5)
self.assertEqual(win.instr(2, 0, 5), b * 5)
win.vline(0, 0, ch, 3)
self.assertEqual(win.instr(0, 0, 1), b)
self.assertEqual(win.instr(1, 0, 1), b)
win.border(ch, ch, ch, ch, ch, ch, ch, ch)
self.assertEqual(win.instr(0, 0), b * maxx)
if ord(ch) < 0x100:
# The same byte given as an int. A wide build stores it
# through the locale, so only a Latin-1 byte round-trips.
v = b[0]
win.erase()
win.hline(2, 0, v, 5)
self.assertEqual(win.instr(2, 0, 5), b * 5)
win.vline(0, 0, v, 3)
self.assertEqual(win.instr(1, 0, 1), b)
win.border(v, v, v, v, v, v, v, v)
self.assertEqual(win.instr(0, 0), b * maxx)
win.box(v, v)
self.assertEqual(win.instr(0, 1, 1), b)
def test_unctrl(self):
# TODO: wunctrl()
self.assertEqual(curses.unctrl(b'A'), b'A')
self.assertEqual(curses.unctrl('A'), b'A')
self.assertEqual(curses.unctrl(65), b'A')
self.assertEqual(curses.unctrl(b'\n'), b'^J')
self.assertEqual(curses.unctrl('\n'), b'^J')
self.assertEqual(curses.unctrl(10), b'^J')
# A printable non-ASCII byte of an 8-bit locale is returned unchanged.
# See _encodable for the character set.
encoding = self.stdscr.encoding
for ch in ('é', '¤', '€', 'є'):
try:
b = ch.encode(encoding)
except UnicodeEncodeError:
continue
if len(b) != 1:
continue
with self.subTest(ch=ch):
self.assertEqual(curses.unctrl(ch), b)
self.assertEqual(curses.unctrl(b[0]), b) # the byte as an int
self.assertRaises(TypeError, curses.unctrl, b'')
self.assertRaises(TypeError, curses.unctrl, b'AB')
self.assertRaises(TypeError, curses.unctrl, '')
self.assertRaises(TypeError, curses.unctrl, 'AB')
self.assertRaises(OverflowError, curses.unctrl, 2**64)
def test_endwin(self):
if not self.isatty:
self.skipTest('requires terminal')
self.assertIs(curses.isendwin(), False)
curses.endwin()
self.assertIs(curses.isendwin(), True)
curses.doupdate()
self.assertIs(curses.isendwin(), False)
def test_terminfo(self):
self.assertIsInstance(curses.tigetflag('hc'), int)
self.assertEqual(curses.tigetflag('cols'), -1)
self.assertEqual(curses.tigetflag('cr'), -1)
self.assertIsInstance(curses.tigetnum('cols'), int)
self.assertEqual(curses.tigetnum('hc'), -2)
self.assertEqual(curses.tigetnum('cr'), -2)
self.assertIsInstance(curses.tigetstr('cr'), (bytes, type(None)))
self.assertIsNone(curses.tigetstr('hc'))
self.assertIsNone(curses.tigetstr('cols'))
cud = curses.tigetstr('cud')
if cud is not None:
# See issue10570.
self.assertIsInstance(cud, bytes)
curses.tparm(cud, 2)
cud_2 = curses.tparm(cud, 2)
self.assertIsInstance(cud_2, bytes)
curses.putp(cud_2)
curses.putp(b'abc\n')
def test_misc_module_funcs(self):
curses.delay_output(1)
curses.flushinp()
curses.doupdate()
self.assertIs(curses.isendwin(), False)
curses.napms(100)
curses.newpad(50, 50)
def test_env_queries(self):
# TODO: term_attrs(), erasewchar(), killwchar()
self.assertIsInstance(curses.termname(), bytes)
self.assertIsInstance(curses.longname(), bytes)
self.assertIsInstance(curses.baudrate(), int)
self.assertIsInstance(curses.has_ic(), bool)
self.assertIsInstance(curses.has_il(), bool)
self.assertIsInstance(curses.termattrs(), int)
c = curses.killchar()
self.assertIsInstance(c, bytes)
self.assertEqual(len(c), 1)
c = curses.erasechar()
self.assertIsInstance(c, bytes)
self.assertEqual(len(c), 1)
def test_output_options(self):
stdscr = self.stdscr
stdscr.clearok(True)
stdscr.clearok(False)
stdscr.idcok(True)
stdscr.idcok(False)
stdscr.idlok(False)
stdscr.idlok(True)
if hasattr(stdscr, 'immedok'):
stdscr.immedok(True)
stdscr.immedok(False)
stdscr.leaveok(True)
stdscr.leaveok(False)
stdscr.scrollok(True)
stdscr.scrollok(False)
stdscr.setscrreg(5, 10)
curses.nonl()
curses.nl(True)
curses.nl(False)
curses.nl()
def test_input_options(self):
stdscr = self.stdscr
if self.isatty:
curses.nocbreak()
curses.cbreak()
curses.cbreak(False)
curses.cbreak(True)
curses.intrflush(True)
curses.intrflush(False)
curses.raw()
curses.raw(False)
curses.raw(True)
curses.noraw()
curses.noecho()
curses.echo()
curses.echo(False)
curses.echo(True)
curses.halfdelay(255)
curses.halfdelay(1)
stdscr.keypad(True)
stdscr.keypad(False)
curses.meta(True)
curses.meta(False)
stdscr.nodelay(True)
stdscr.nodelay(False)
curses.noqiflush()
curses.qiflush(True)
curses.qiflush(False)
curses.qiflush()
stdscr.notimeout(True)
stdscr.notimeout(False)
stdscr.timeout(-1)
stdscr.timeout(0)
stdscr.timeout(5)
@requires_curses_func('typeahead')
def test_typeahead(self):
curses.typeahead(sys.__stdin__.fileno())
curses.typeahead(-1)
def test_prog_mode(self):
if not self.isatty:
self.skipTest('requires terminal')
curses.def_prog_mode()
curses.reset_prog_mode()
# def_shell_mode()/reset_shell_mode() are intentionally not exercised
# here: they capture and restore curses' "shell mode" terminal state,
# which is only meaningful before initscr(). Calling them mid-suite
# corrupts the modes that endwin() restores and breaks later tests.
def test_beep(self):
if (curses.tigetstr("bel") is not None
or curses.tigetstr("flash") is not None):
curses.beep()
else:
try:
curses.beep()
except curses.error:
self.skipTest('beep() failed')
def test_flash(self):
if (curses.tigetstr("bel") is not None
or curses.tigetstr("flash") is not None):
curses.flash()
else:
try:
curses.flash()
except curses.error:
self.skipTest('flash() failed')
def test_curs_set(self):
for vis, cap in [(0, 'civis'), (2, 'cvvis'), (1, 'cnorm')]:
if curses.tigetstr(cap) is not None:
curses.curs_set(vis)
else:
try:
curses.curs_set(vis)
except curses.error:
pass
@requires_curses_func('get_escdelay')
def test_escdelay(self):
escdelay = curses.get_escdelay()
self.assertIsInstance(escdelay, int)
curses.set_escdelay(25)
self.assertEqual(curses.get_escdelay(), 25)
curses.set_escdelay(escdelay)
@requires_curses_func('get_tabsize')
def test_tabsize(self):
tabsize = curses.get_tabsize()
self.assertIsInstance(tabsize, int)
curses.set_tabsize(4)
self.assertEqual(curses.get_tabsize(), 4)
curses.set_tabsize(tabsize)
@requires_curses_func('getsyx')
def test_getsyx(self):
y, x = curses.getsyx()
self.assertIsInstance(y, int)
self.assertIsInstance(x, int)
curses.setsyx(4, 5)
self.assertEqual(curses.getsyx(), (4, 5))
def bad_colors(self):
return (-1, curses.COLORS, -2**31 - 1, 2**31, -2**63 - 1, 2**63, 2**64)
def bad_colors2(self):
return (curses.COLORS, 2**31, 2**63, 2**64)
def bad_pairs(self):
return (-1, -2**31 - 1, 2**31, -2**63 - 1, 2**63, 2**64)
def test_has_colors(self):
self.assertIsInstance(curses.has_colors(), bool)
self.assertIsInstance(curses.can_change_color(), bool)
def test_start_color(self):
if not curses.has_colors():
self.skipTest('requires colors support')
curses.start_color()
if verbose:
print(f'COLORS = {curses.COLORS}', file=sys.stderr)
print(f'COLOR_PAIRS = {curses.COLOR_PAIRS}', file=sys.stderr)
@requires_colors
def test_color_content(self):
self.assertEqual(curses.color_content(curses.COLOR_BLACK), (0, 0, 0))
curses.color_content(0)
maxcolor = curses.COLORS - 1
curses.color_content(maxcolor)
for color in self.bad_colors():
self.assertRaises(ValueError, curses.color_content, color)
@requires_colors
def test_init_color(self):
if not curses.can_change_color():
self.skipTest('cannot change color')
old = curses.color_content(0)
try:
curses.init_color(0, *old)
except curses.error:
self.skipTest('cannot change color (init_color() failed)')
self.addCleanup(curses.init_color, 0, *old)
curses.init_color(0, 0, 0, 0)
self.assertEqual(curses.color_content(0), (0, 0, 0))
curses.init_color(0, 1000, 1000, 1000)
self.assertEqual(curses.color_content(0), (1000, 1000, 1000))
maxcolor = curses.COLORS - 1
old = curses.color_content(maxcolor)
curses.init_color(maxcolor, *old)
self.addCleanup(curses.init_color, maxcolor, *old)
curses.init_color(maxcolor, 0, 500, 1000)
self.assertEqual(curses.color_content(maxcolor), (0, 500, 1000))
for color in self.bad_colors():
self.assertRaises(ValueError, curses.init_color, color, 0, 0, 0)
for comp in (-1, 1001):
self.assertRaises(ValueError, curses.init_color, 0, comp, 0, 0)
self.assertRaises(ValueError, curses.init_color, 0, 0, comp, 0)
self.assertRaises(ValueError, curses.init_color, 0, 0, 0, comp)
def get_pair_limit(self):
pair_limit = curses.COLOR_PAIRS
if hasattr(curses, 'ncurses_version'):
if curses.has_extended_color_support():
pair_limit += 2*curses.COLORS + 1
if (not curses.has_extended_color_support()
or (6, 1) <= curses.ncurses_version < (6, 2)):
pair_limit = min(pair_limit, SHORT_MAX)
# If use_default_colors() is called, the upper limit of the extended
# range may be restricted, so we need to check if the limit is still
# correct
try:
curses.init_pair(pair_limit - 1, 0, 0)
except ValueError:
pair_limit = curses.COLOR_PAIRS
return pair_limit
@requires_colors
def test_pair_content(self):
curses.pair_content(0)
maxpair = self.get_pair_limit() - 1
if maxpair > 0:
curses.pair_content(maxpair)
for pair in self.bad_pairs():
self.assertRaises(ValueError, curses.pair_content, pair)
@requires_colors
def test_init_pair(self):
old = curses.pair_content(1)
curses.init_pair(1, *old)
self.addCleanup(curses.init_pair, 1, *old)
curses.init_pair(1, 0, 0)
self.assertEqual(curses.pair_content(1), (0, 0))
maxcolor = curses.COLORS - 1
curses.init_pair(1, maxcolor, 0)
self.assertEqual(curses.pair_content(1), (maxcolor, 0))
curses.init_pair(1, 0, maxcolor)
self.assertEqual(curses.pair_content(1), (0, maxcolor))
maxpair = self.get_pair_limit() - 1
if maxpair > 1:
curses.init_pair(maxpair, 0, 0)
self.assertEqual(curses.pair_content(maxpair), (0, 0))
for pair in self.bad_pairs():
self.assertRaises(ValueError, curses.init_pair, pair, 0, 0)
for color in self.bad_colors2():
self.assertRaises(ValueError, curses.init_pair, 1, color, 0)
self.assertRaises(ValueError, curses.init_pair, 1, 0, color)
@requires_colors
def test_color_attrs(self):
for pair in 0, 1, 255:
attr = curses.color_pair(pair)
self.assertEqual(curses.pair_number(attr), pair, attr)
self.assertEqual(curses.pair_number(attr | curses.A_BOLD), pair)
self.assertEqual(curses.color_pair(0), 0)
self.assertEqual(curses.pair_number(0), 0)
@requires_curses_func('use_default_colors')
@requires_colors
def test_use_default_colors(self):
try:
curses.use_default_colors()
except curses.error:
self.skipTest('cannot change color (use_default_colors() failed)')
self.assertEqual(curses.pair_content(0), (-1, -1))
@requires_curses_func('assume_default_colors')
@requires_colors
def test_assume_default_colors(self):
try:
curses.assume_default_colors(-1, -1)
except curses.error:
self.skipTest('cannot change color (assume_default_colors() failed)')
self.assertEqual(curses.pair_content(0), (-1, -1))
curses.assume_default_colors(curses.COLOR_YELLOW, curses.COLOR_BLUE)
self.assertEqual(curses.pair_content(0), (curses.COLOR_YELLOW, curses.COLOR_BLUE))
curses.assume_default_colors(curses.COLOR_RED, -1)
self.assertEqual(curses.pair_content(0), (curses.COLOR_RED, -1))
curses.assume_default_colors(-1, curses.COLOR_GREEN)
self.assertEqual(curses.pair_content(0), (-1, curses.COLOR_GREEN))
curses.assume_default_colors(-1, -1)
def test_keyname(self):
# TODO: key_name()
self.assertEqual(curses.keyname(65), b'A')
self.assertEqual(curses.keyname(13), b'^M')
self.assertEqual(curses.keyname(127), b'^?')
self.assertEqual(curses.keyname(0), b'^@')
self.assertRaises(ValueError, curses.keyname, -1)
self.assertIsInstance(curses.keyname(256), bytes)
@requires_curses_func('has_key')
def test_has_key(self):
self.assertIsInstance(curses.has_key(13), bool)
self.assertIsInstance(curses.has_key(curses.KEY_LEFT), bool)
@requires_curses_func('getmouse')
def test_getmouse(self):
(availmask, oldmask) = curses.mousemask(curses.BUTTON1_PRESSED)
if availmask == 0:
self.skipTest('mouse stuff not available')
curses.mouseinterval(10)
# just verify these don't cause errors
curses.ungetmouse(0, 0, 0, 0, curses.BUTTON1_PRESSED)
m = curses.getmouse()
@requires_curses_func('panel')
def test_userptr_without_set(self):
w = curses.newwin(10, 10)
p = curses.panel.new_panel(w)
# try to access userptr() before calling set_userptr() -- segfaults
with self.assertRaises(curses.panel.error,
msg='userptr should fail since not set'):
p.userptr()
@requires_curses_func('panel')
def test_userptr_memory_leak(self):
w = curses.newwin(10, 10)
p = curses.panel.new_panel(w)
obj = object()
nrefs = sys.getrefcount(obj)
for i in range(100):
p.set_userptr(obj)
p.set_userptr(None)
self.assertEqual(sys.getrefcount(obj), nrefs,
"set_userptr leaked references")
@requires_curses_func('panel')
def test_userptr_segfault(self):
w = curses.newwin(10, 10)
panel = curses.panel.new_panel(w)
class A:
def __del__(self):
panel.set_userptr(None)
panel.set_userptr(A())
panel.set_userptr(None)
@cpython_only
@requires_curses_func('panel')
def test_disallow_instantiation(self):
# Ensure that the type disallows instantiation (bpo-43916)
w = curses.newwin(10, 10)
panel = curses.panel.new_panel(w)
check_disallow_instantiation(self, type(panel))
@requires_curses_func('panel')
def test_panel_stack(self):
panel = curses.panel
# new_panel() puts the panel on top of the stack, so the three
# panels end up ordered bottom -> top as p1, p2, p3.
p1 = panel.new_panel(curses.newwin(3, 6, 0, 0))
p2 = panel.new_panel(curses.newwin(3, 6, 1, 1))
p3 = panel.new_panel(curses.newwin(3, 6, 2, 2))
self.addCleanup(self._delete_panels, p1, p2, p3)
# The most recently created panel is on top.
self.assertIs(panel.top_panel(), p3)
# window() returns the wrapped window.
self.assertEqual(p2.window().getbegyx(), (1, 1))
# above()/below() walk the stack one step at a time.
self.assertIs(p1.above(), p2)
self.assertIs(p2.above(), p3)
self.assertIsNone(p3.above()) # nothing above the top panel
self.assertIs(p3.below(), p2)
self.assertIs(p2.below(), p1)
# top() raises a panel to the top, bottom() lowers it to the bottom.
p1.top()
self.assertIs(panel.top_panel(), p1)
self.assertIsNone(p1.above())
p1.bottom()
self.assertIs(panel.bottom_panel(), p1)
self.assertIsNone(p1.below())
# update_panels() refreshes the virtual screen from the stack.
panel.update_panels()
@requires_curses_func('panel')
def test_panel_hide_show(self):
p = curses.panel.new_panel(curses.newwin(3, 6, 0, 0))
self.addCleanup(self._delete_panels, p)
self.assertIs(p.hidden(), False)
p.hide()
self.assertIs(p.hidden(), True)
p.show()
self.assertIs(p.hidden(), False)
@requires_curses_func('panel')
def test_panel_move(self):
win = curses.newwin(3, 6, 1, 2)
p = curses.panel.new_panel(win)
self.addCleanup(self._delete_panels, p)
self.assertEqual(win.getbegyx(), (1, 2))
p.move(4, 5)
self.assertEqual(win.getbegyx(), (4, 5))
@requires_curses_func('panel')
def test_panel_replace(self):
win1 = curses.newwin(3, 6, 0, 0)
win2 = curses.newwin(4, 8, 1, 1)
p = curses.panel.new_panel(win1)
self.addCleanup(self._delete_panels, p)
self.assertIs(p.window(), win1)
p.replace(win2)
self.assertIs(p.window(), win2)
@requires_curses_func('panel')
def test_panel_userptr(self):
p = curses.panel.new_panel(curses.newwin(3, 6, 0, 0))
self.addCleanup(self._delete_panels, p)
obj = ['userptr']
p.set_userptr(obj)
self.assertIs(p.userptr(), obj)
def _delete_panels(self, *panels):
# Drop the panels from the global stack so they do not leak into
# later tests that inspect top_panel()/bottom_panel().
for p in panels:
try:
p.bottom()
except curses.panel.error:
pass
del panels
gc_collect()
def _make_textbox(self, nlines, ncols, *, insert_mode=False, stripspaces=1):
win = curses.newwin(nlines, ncols, 0, 0)
box = curses.textpad.Textbox(win, insert_mode=insert_mode)
box.stripspaces = stripspaces
return box, win
def _type(self, box, text):
for ch in text:
box.do_command(ch if isinstance(ch, int) else ord(ch))
def test_textbox_gather(self):
# Typed text is read back by gather(). With stripspaces on (the
# default) gather() keeps a single trailing blank on a line and
# drops trailing empty lines.
box, win = self._make_textbox(3, 10)
self._type(box, 'Hello')
self.assertEqual(box.gather(), 'Hello \n')
def test_textbox_gather_multiline(self):
box, win = self._make_textbox(3, 10)
self._type(box, 'ab')
box.do_command(curses.ascii.NL) # ^j -> start of next line
self._type(box, 'cd')
self.assertEqual(box.gather(), 'ab \ncd \n')
def test_textbox_stripspaces(self):
box, win = self._make_textbox(1, 8, stripspaces=1)
self._type(box, 'hi')
self.assertEqual(box.gather(), 'hi ')
box, win = self._make_textbox(1, 8, stripspaces=0)
self._type(box, 'hi')
self.assertEqual(box.gather(), 'hi ')
def test_textbox_insert_mode(self):
# In insert mode a typed character shifts the rest of the line right.
box, win = self._make_textbox(1, 10, insert_mode=True)
self._type(box, 'aXc')
win.move(0, 1)
self._type(box, 'b')
self.assertEqual(box.gather(), 'abXc ')
def test_textbox_fill_last_cell(self):
# The lower-right cell can be written, even though addch() there
# cannot advance the cursor past the end of the window.
box, win = self._make_textbox(1, 4, stripspaces=0)
self._type(box, 'abcd')
self.assertEqual(box.gather(), 'abcd')
def test_textbox_fill_last_cell_multiline(self):
box, win = self._make_textbox(2, 3, stripspaces=0)
self._type(box, 'abc')
box.do_command(curses.ascii.NL) # ^j -> start of next line
self._type(box, 'def') # 'f' lands in the lower-right cell
self.assertEqual(box.gather(), 'abc\ndef\n')
def test_textbox_fill_last_cell_insert_mode(self):
box, win = self._make_textbox(1, 4, insert_mode=True, stripspaces=0)
self._type(box, 'abcd')
self.assertEqual(box.gather(), 'abcd')
def test_textbox_fill_last_cell_scrollok(self):
# Writing the lower-right cell must not scroll the window even if it
# has scrolling enabled.
box, win = self._make_textbox(2, 3, stripspaces=0)
win.scrollok(True)
self._type(box, 'abc')
box.do_command(curses.ascii.NL)
self._type(box, 'def')
self.assertEqual(box.gather(), 'abc\ndef\n')
def test_textbox_movement(self):
box, win = self._make_textbox(3, 10)
self._type(box, 'abc')
box.do_command(curses.ascii.SOH) # ^a -> left edge
self.assertEqual(win.getyx(), (0, 0))
box.do_command(curses.ascii.ENQ) # ^e -> end of line
self.assertEqual(win.getyx(), (0, 3))
def test_textbox_kill_to_eol(self):
box, win = self._make_textbox(1, 10)
self._type(box, 'abcdef')
win.move(0, 3)
box.do_command(curses.ascii.VT) # ^k -> clear to end of line
self.assertEqual(box.gather(), 'abc ')
def test_textbox_backspace(self):
box, win = self._make_textbox(1, 10)
self._type(box, 'abc')
box.do_command(curses.ascii.BS) # ^h -> delete backward
self.assertEqual(box.gather(), 'ab ')
def test_textbox_edit(self):
# edit() reads characters until Ctrl-G and returns the contents.
box, win = self._make_textbox(1, 10)
for ch in reversed('Hi' + chr(curses.ascii.BEL)):
curses.ungetch(ch)
self.assertEqual(box.edit(), 'Hi ')
def test_textbox_edit_validate(self):
# The validate hook can rewrite an incoming keystroke.
box, win = self._make_textbox(1, 10)
for ch in reversed('abc' + chr(curses.ascii.BEL)):
curses.ungetch(ch)
box.edit(lambda ch: ord('X') if ch == ord('b') else ch)
self.assertEqual(box.gather(), 'aXc ')
def test_textpad_rectangle(self):
# rectangle() draws a box with ACS line/corner characters.
win = curses.newwin(6, 12, 0, 0)
curses.textpad.rectangle(win, 0, 0, 4, 8)
chartext = curses.A_CHARTEXT
self.assertEqual(win.inch(0, 0) & chartext,
curses.ACS_ULCORNER & chartext)
self.assertEqual(win.inch(0, 8) & chartext,
curses.ACS_URCORNER & chartext)
self.assertEqual(win.inch(4, 0) & chartext,
curses.ACS_LLCORNER & chartext)
self.assertEqual(win.inch(4, 8) & chartext,
curses.ACS_LRCORNER & chartext)
self.assertEqual(win.inch(0, 1) & chartext,
curses.ACS_HLINE & chartext)
self.assertEqual(win.inch(1, 0) & chartext,
curses.ACS_VLINE & chartext)
def test_wrapper(self):
# wrapper() sets up curses, passes the screen to the callable along
# with extra arguments, returns its result and restores the terminal.
if not self.isatty:
self.skipTest('requires terminal')
def body(stdscr, a, b):
self.assertIsInstance(stdscr, type(self.stdscr))
self.assertIs(curses.isendwin(), False)
return a + b
self.assertEqual(curses.wrapper(body, 2, 3), 5)
self.assertIs(curses.isendwin(), True)
# wrapper() left the screen ended; revive it so the per-test
# endwin() cleanup does not fail with ERR.
curses.doupdate()
@requires_curses_func('is_term_resized')
def test_is_term_resized(self):
lines, cols = curses.LINES, curses.COLS
self.assertIs(curses.is_term_resized(lines, cols), False)
self.assertIs(curses.is_term_resized(lines-1, cols-1), True)
@requires_curses_func('resize_term')
def test_resize_term(self):
curses.update_lines_cols()
lines, cols = curses.LINES, curses.COLS
new_lines = lines - 1
new_cols = cols + 1
curses.resize_term(new_lines, new_cols)
self.assertEqual(curses.LINES, new_lines)
self.assertEqual(curses.COLS, new_cols)
curses.resize_term(lines, cols)
self.assertEqual(curses.LINES, lines)
self.assertEqual(curses.COLS, cols)
with self.assertRaises(OverflowError):
curses.resize_term(35000, 1)
with self.assertRaises(OverflowError):
curses.resize_term(1, 35000)
# GH-120378: Overflow failure in resize_term() causes refresh to fail
tmp = curses.initscr()
tmp.erase()
@requires_curses_func('resizeterm')
def test_resizeterm(self):
curses.update_lines_cols()
lines, cols = curses.LINES, curses.COLS
new_lines = lines - 1
new_cols = cols + 1
curses.resizeterm(new_lines, new_cols)
self.assertEqual(curses.LINES, new_lines)
self.assertEqual(curses.COLS, new_cols)
curses.resizeterm(lines, cols)
self.assertEqual(curses.LINES, lines)
self.assertEqual(curses.COLS, cols)
with self.assertRaises(OverflowError):
curses.resizeterm(35000, 1)
with self.assertRaises(OverflowError):
curses.resizeterm(1, 35000)
# GH-120378: Overflow failure in resizeterm() causes refresh to fail
tmp = curses.initscr()
tmp.erase()
def test_ungetch(self):
curses.ungetch(b'A')
self.assertEqual(self.stdscr.getkey(), 'A')
curses.ungetch('B')
self.assertEqual(self.stdscr.getkey(), 'B')
curses.ungetch(67)
self.assertEqual(self.stdscr.getkey(), 'C')
def test_issue6243(self):
curses.ungetch(1025)
self.stdscr.getkey()
@requires_curses_func('unget_wch')
@unittest.skipIf(getattr(curses, 'ncurses_version', (99,)) < (5, 8),
"unget_wch is broken in ncurses 5.7 and earlier")
def test_unget_wch(self):
stdscr = self.stdscr
encoding = stdscr.encoding
# See _encodable for the character set, plus a non-BMP character.
for ch in ('a', '\xe9', '\xa4', '\u20ac', '\u0454', '\U0010FFFF'):
try:
ch.encode(encoding)
except UnicodeEncodeError:
continue
try:
curses.unget_wch(ch)
except Exception as err:
self.fail("unget_wch(%a) failed with encoding %s: %s"
% (ch, stdscr.encoding, err))
read = stdscr.get_wch()
self.assertEqual(read, ch)
code = ord(ch)
curses.unget_wch(code)
read = stdscr.get_wch()
self.assertEqual(read, ch)
def test_encoding(self):
stdscr = self.stdscr
import codecs
encoding = stdscr.encoding
codecs.lookup(encoding)
with self.assertRaises(TypeError):
stdscr.encoding = 10
stdscr.encoding = encoding
with self.assertRaises(TypeError):
del stdscr.encoding
@unittest.skipIf(MISSING_C_DOCSTRINGS,
"Signature information for builtins requires docstrings")
def test_issue21088(self):
stdscr = self.stdscr
#
# http://bugs.python.org/issue21088
#
# the bug:
# when converting curses.window.addch to Argument Clinic
# the first two parameters were switched.
# if someday we can represent the signature of addch
# we will need to rewrite this test.
try:
signature = inspect.signature(stdscr.addch)
self.assertFalse(signature)
except ValueError:
# not generating a signature is fine.
pass
# So. No signature for addch.
# But Argument Clinic gave us a human-readable equivalent
# as the first line of the docstring. So we parse that,
# and ensure that the parameters appear in the correct order.
# Since this is parsing output from Argument Clinic, we can
# be reasonably certain the generated parsing code will be
# correct too.
human_readable_signature = stdscr.addch.__doc__.split("\n")[0]
self.assertIn("[y, x,]", human_readable_signature)
@requires_curses_window_meth('resize')
def test_issue13051(self):
win = curses.newwin(5, 15, 2, 5)
box = curses.textpad.Textbox(win, insert_mode=True)
lines, cols = win.getmaxyx()
win.resize(lines-2, cols-2)
# this may cause infinite recursion, leading to a RuntimeError
box._insert_printable_char('a')
class MiscTests(unittest.TestCase):
@requires_curses_func('update_lines_cols')
def test_update_lines_cols(self):
curses.update_lines_cols()
lines, cols = curses.LINES, curses.COLS
curses.LINES = curses.COLS = 0
curses.update_lines_cols()
self.assertEqual(curses.LINES, lines)
self.assertEqual(curses.COLS, cols)
@requires_curses_func('ncurses_version')
def test_ncurses_version(self):
v = curses.ncurses_version
if verbose:
print(f'ncurses_version = {curses.ncurses_version}', flush=True)
self.assertIsInstance(v[:], tuple)
self.assertEqual(len(v), 3)
self.assertIsInstance(v[0], int)
self.assertIsInstance(v[1], int)
self.assertIsInstance(v[2], int)
self.assertIsInstance(v.major, int)
self.assertIsInstance(v.minor, int)
self.assertIsInstance(v.patch, int)
self.assertEqual(v[0], v.major)
self.assertEqual(v[1], v.minor)
self.assertEqual(v[2], v.patch)
self.assertGreaterEqual(v.major, 0)
self.assertGreaterEqual(v.minor, 0)
self.assertGreaterEqual(v.patch, 0)
def test_has_extended_color_support(self):
r = curses.has_extended_color_support()
self.assertIsInstance(r, bool)
class TestAscii(unittest.TestCase):
def test_controlnames(self):
for name in curses.ascii.controlnames:
self.assertHasAttr(curses.ascii, name)
def test_ctypes(self):
def check(func, expected):
with self.subTest(ch=c, func=func):
self.assertEqual(func(i), expected)
self.assertEqual(func(c), expected)
for i in range(256):
c = chr(i)
b = bytes([i])
check(curses.ascii.isalnum, b.isalnum())
check(curses.ascii.isalpha, b.isalpha())
check(curses.ascii.isdigit, b.isdigit())
check(curses.ascii.islower, b.islower())
check(curses.ascii.isspace, b.isspace())
check(curses.ascii.isupper, b.isupper())
check(curses.ascii.isascii, i < 128)
check(curses.ascii.ismeta, i >= 128)
check(curses.ascii.isctrl, i < 32)
check(curses.ascii.iscntrl, i < 32 or i == 127)
check(curses.ascii.isblank, c in ' \t')
check(curses.ascii.isgraph, 32 < i <= 126)
check(curses.ascii.isprint, 32 <= i <= 126)
check(curses.ascii.ispunct, c in string.punctuation)
check(curses.ascii.isxdigit, c in string.hexdigits)
for i in (-2, -1, 256, sys.maxunicode, sys.maxunicode+1):
self.assertFalse(curses.ascii.isalnum(i))
self.assertFalse(curses.ascii.isalpha(i))
self.assertFalse(curses.ascii.isdigit(i))
self.assertFalse(curses.ascii.islower(i))
self.assertFalse(curses.ascii.isspace(i))
self.assertFalse(curses.ascii.isupper(i))
self.assertFalse(curses.ascii.isascii(i))
self.assertFalse(curses.ascii.isctrl(i))
self.assertFalse(curses.ascii.iscntrl(i))
self.assertFalse(curses.ascii.isblank(i))
self.assertFalse(curses.ascii.isgraph(i))
self.assertFalse(curses.ascii.isprint(i))
self.assertFalse(curses.ascii.ispunct(i))
self.assertFalse(curses.ascii.isxdigit(i))
self.assertFalse(curses.ascii.ismeta(-1))
def test_ascii(self):
ascii = curses.ascii.ascii
self.assertEqual(ascii('\xc1'), 'A')
self.assertEqual(ascii('A'), 'A')
self.assertEqual(ascii(ord('\xc1')), ord('A'))
def test_ctrl(self):
ctrl = curses.ascii.ctrl
self.assertEqual(ctrl('J'), '\n')
self.assertEqual(ctrl('\n'), '\n')
self.assertEqual(ctrl('@'), '\0')
self.assertEqual(ctrl(ord('J')), ord('\n'))
def test_alt(self):
alt = curses.ascii.alt
self.assertEqual(alt('\n'), '\x8a')
self.assertEqual(alt('A'), '\xc1')
self.assertEqual(alt(ord('A')), 0xc1)
def test_unctrl(self):
unctrl = curses.ascii.unctrl
self.assertEqual(unctrl('a'), 'a')
self.assertEqual(unctrl('A'), 'A')
self.assertEqual(unctrl(';'), ';')
self.assertEqual(unctrl(' '), ' ')
self.assertEqual(unctrl('\x7f'), '^?')
self.assertEqual(unctrl('\n'), '^J')
self.assertEqual(unctrl('\0'), '^@')
self.assertEqual(unctrl(ord('A')), 'A')
self.assertEqual(unctrl(ord('\n')), '^J')
# Meta-bit characters
self.assertEqual(unctrl('\x8a'), '!^J')
self.assertEqual(unctrl('\xc1'), '!A')
self.assertEqual(unctrl(ord('\x8a')), '!^J')
self.assertEqual(unctrl(ord('\xc1')), '!A')
def lorem_ipsum(win):
text = [
'Lorem ipsum',
'dolor sit amet,',
'consectetur',
'adipiscing elit,',
'sed do eiusmod',
'tempor incididunt',
'ut labore et',
'dolore magna',
'aliqua.',
]
maxy, maxx = win.getmaxyx()
for y, line in enumerate(text[:maxy]):
win.addstr(y, 0, line[:maxx - (y == maxy - 1)])
class TextboxTest(unittest.TestCase):
def setUp(self):
self.mock_win = MagicMock(spec=curses.window)
self.mock_win.getyx.return_value = (1, 1)
self.mock_win.getmaxyx.return_value = (10, 20)
self.textbox = curses.textpad.Textbox(self.mock_win)
def test_init(self):
"""Test textbox initialization."""
self.mock_win.reset_mock()
tb = curses.textpad.Textbox(self.mock_win)
self.mock_win.getmaxyx.assert_called_once_with()
self.mock_win.keypad.assert_called_once_with(1)
self.assertEqual(tb.insert_mode, False)
self.assertEqual(tb.stripspaces, 1)
self.assertIsNone(tb.lastcmd)
self.mock_win.reset_mock()
def test_insert(self):
"""Test inserting a printable character."""
self.mock_win.reset_mock()
self.textbox.do_command(ord('a'))
self.mock_win.addch.assert_called_with(ord('a'))
self.textbox.do_command(ord('b'))
self.mock_win.addch.assert_called_with(ord('b'))
self.textbox.do_command(ord('c'))
self.mock_win.addch.assert_called_with(ord('c'))
self.mock_win.reset_mock()
def test_delete(self):
"""Test deleting a character."""
self.mock_win.reset_mock()
self.textbox.do_command(curses.ascii.BS)
self.textbox.do_command(curses.KEY_BACKSPACE)
self.textbox.do_command(curses.ascii.DEL)
assert self.mock_win.delch.call_count == 3
self.mock_win.reset_mock()
def test_move_left(self):
"""Test moving the cursor left."""
self.mock_win.reset_mock()
self.textbox.do_command(curses.KEY_LEFT)
self.mock_win.move.assert_called_with(1, 0)
self.mock_win.reset_mock()
def test_move_right(self):
"""Test moving the cursor right."""
self.mock_win.reset_mock()
self.textbox.do_command(curses.KEY_RIGHT)
self.mock_win.move.assert_called_with(1, 2)
self.mock_win.reset_mock()
def test_move_left_and_right(self):
"""Test moving the cursor left and then right."""
self.mock_win.reset_mock()
self.textbox.do_command(curses.KEY_LEFT)
self.mock_win.move.assert_called_with(1, 0)
self.textbox.do_command(curses.KEY_RIGHT)
self.mock_win.move.assert_called_with(1, 2)
self.mock_win.reset_mock()
def test_move_up(self):
"""Test moving the cursor up."""
self.mock_win.reset_mock()
self.textbox.do_command(curses.KEY_UP)
self.mock_win.move.assert_called_with(0, 1)
self.mock_win.reset_mock()
def test_move_down(self):
"""Test moving the cursor down."""
self.mock_win.reset_mock()
self.textbox.do_command(curses.KEY_DOWN)
self.mock_win.move.assert_called_with(2, 1)
self.mock_win.reset_mock()
if __name__ == '__main__':
unittest.main()
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