[3.9] bpo-42789: Don't skip curses tests on non-tty. (GH-24009) (GH-24076)
If __stdout__ is not attached to terminal, try to use __stderr__
if it is attached to terminal, or open the terminal device, or
use regular file as terminal, but some functions will be untested
in the latter case.
(cherry picked from commit 607501abb4)
This commit is contained in:
Serhiy Storchaka
GitHub
parent
bfc413ce4f
commit
0303008ebc
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@ -47,37 +47,57 @@ class TestCurses(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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if not sys.__stdout__.isatty():
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# Temporary skip tests on non-tty
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raise unittest.SkipTest('sys.__stdout__ is not a tty')
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cls.tmp = tempfile.TemporaryFile()
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fd = cls.tmp.fileno()
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else:
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cls.tmp = None
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fd = sys.__stdout__.fileno()
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# testing setupterm() inside initscr/endwin
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# causes terminal breakage
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curses.setupterm(fd=fd)
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@classmethod
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def tearDownClass(cls):
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if cls.tmp:
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cls.tmp.close()
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del cls.tmp
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stdout_fd = sys.__stdout__.fileno()
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curses.setupterm(fd=stdout_fd)
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def setUp(self):
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self.isatty = True
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self.output = sys.__stdout__
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stdout_fd = sys.__stdout__.fileno()
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if not sys.__stdout__.isatty():
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# initstr() unconditionally uses C stdout.
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# If it is redirected to file or pipe, try to attach it
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# to terminal.
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# First, save a copy of the file descriptor of stdout, so it
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# can be restored after finishing the test.
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dup_fd = os.dup(stdout_fd)
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self.addCleanup(os.close, dup_fd)
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self.addCleanup(os.dup2, dup_fd, stdout_fd)
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if sys.__stderr__.isatty():
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# If stderr is connected to terminal, use it.
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tmp = sys.__stderr__
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self.output = sys.__stderr__
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else:
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try:
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# Try to open the terminal device.
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tmp = open('/dev/tty', 'wb', buffering=0)
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except OSError:
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# As a fallback, use regular file to write control codes.
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# Some functions (like savetty) will not work, but at
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# least the garbage control sequences will not be mixed
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# with the testing report.
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tmp = tempfile.TemporaryFile(mode='wb', buffering=0)
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self.isatty = False
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self.addCleanup(tmp.close)
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self.output = None
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os.dup2(tmp.fileno(), stdout_fd)
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self.save_signals = SaveSignals()
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self.save_signals.save()
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if verbose:
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self.addCleanup(self.save_signals.restore)
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if verbose and self.output is not None:
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# just to make the test output a little more readable
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print()
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sys.stderr.flush()
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sys.stdout.flush()
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print(file=self.output, flush=True)
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self.stdscr = curses.initscr()
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curses.savetty()
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def tearDown(self):
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curses.resetty()
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curses.endwin()
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self.save_signals.restore()
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if self.isatty:
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curses.savetty()
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self.addCleanup(curses.endwin)
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self.addCleanup(curses.resetty)
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def test_window_funcs(self):
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"Test the methods of windows"
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@ -95,7 +115,7 @@ class TestCurses(unittest.TestCase):
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for meth in [stdscr.clear, stdscr.clrtobot,
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stdscr.clrtoeol, stdscr.cursyncup, stdscr.delch,
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stdscr.deleteln, stdscr.erase, stdscr.getbegyx,
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stdscr.getbkgd, stdscr.getkey, stdscr.getmaxyx,
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stdscr.getbkgd, stdscr.getmaxyx,
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stdscr.getparyx, stdscr.getyx, stdscr.inch,
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stdscr.insertln, stdscr.instr, stdscr.is_wintouched,
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win.noutrefresh, stdscr.redrawwin, stdscr.refresh,
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@ -206,6 +226,11 @@ class TestCurses(unittest.TestCase):
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if hasattr(stdscr, 'enclose'):
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stdscr.enclose(10, 10)
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with tempfile.TemporaryFile() as f:
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self.stdscr.putwin(f)
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f.seek(0)
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curses.getwin(f)
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self.assertRaises(ValueError, stdscr.getstr, -400)
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self.assertRaises(ValueError, stdscr.getstr, 2, 3, -400)
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self.assertRaises(ValueError, stdscr.instr, -2)
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@ -224,16 +249,19 @@ class TestCurses(unittest.TestCase):
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def test_module_funcs(self):
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"Test module-level functions"
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for func in [curses.baudrate, curses.beep, curses.can_change_color,
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curses.cbreak, curses.def_prog_mode, curses.doupdate,
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curses.flash, curses.flushinp,
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curses.doupdate, curses.flash, curses.flushinp,
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curses.has_colors, curses.has_ic, curses.has_il,
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curses.isendwin, curses.killchar, curses.longname,
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curses.nocbreak, curses.noecho, curses.nonl,
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curses.noqiflush, curses.noraw,
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curses.reset_prog_mode, curses.termattrs,
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curses.termname, curses.erasechar]:
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curses.noecho, curses.nonl, curses.noqiflush,
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curses.termattrs, curses.termname, curses.erasechar]:
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with self.subTest(func=func.__qualname__):
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func()
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if self.isatty:
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for func in [curses.cbreak, curses.def_prog_mode,
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curses.nocbreak, curses.noraw,
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curses.reset_prog_mode]:
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with self.subTest(func=func.__qualname__):
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func()
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if hasattr(curses, 'filter'):
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curses.filter()
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if hasattr(curses, 'getsyx'):
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@ -245,13 +273,9 @@ class TestCurses(unittest.TestCase):
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curses.delay_output(1)
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curses.echo() ; curses.echo(1)
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with tempfile.TemporaryFile() as f:
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self.stdscr.putwin(f)
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f.seek(0)
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curses.getwin(f)
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curses.halfdelay(1)
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curses.intrflush(1)
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if self.isatty:
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curses.intrflush(1)
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curses.meta(1)
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curses.napms(100)
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curses.newpad(50,50)
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@ -260,7 +284,8 @@ class TestCurses(unittest.TestCase):
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curses.nl() ; curses.nl(1)
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curses.putp(b'abc')
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curses.qiflush()
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curses.raw() ; curses.raw(1)
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if self.isatty:
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curses.raw() ; curses.raw(1)
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curses.set_escdelay(25)
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self.assertEqual(curses.get_escdelay(), 25)
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curses.set_tabsize(4)
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@ -286,7 +311,7 @@ class TestCurses(unittest.TestCase):
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curses.init_pair(2, 1,1)
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curses.color_content(1)
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curses.color_pair(2)
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curses.pair_content(curses.COLOR_PAIRS - 1)
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curses.pair_content(min(curses.COLOR_PAIRS - 1, 0x7fff))
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curses.pair_number(0)
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if hasattr(curses, 'use_default_colors'):
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@ -358,7 +383,6 @@ class TestCurses(unittest.TestCase):
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@requires_curses_func('resizeterm')
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def test_resizeterm(self):
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stdscr = self.stdscr
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lines, cols = curses.LINES, curses.COLS
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new_lines = lines - 1
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new_cols = cols + 1
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