JezK
Edit File: initialise_test.py
# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. import sys from unittest import TestCase, main, skipUnless try: from unittest.mock import patch, Mock except ImportError: from mock import patch, Mock from ..ansitowin32 import StreamWrapper from ..initialise import init, just_fix_windows_console, _wipe_internal_state_for_tests from .utils import osname, replace_by orig_stdout = sys.stdout orig_stderr = sys.stderr class InitTest(TestCase): @skipUnless(sys.stdout.isatty(), "sys.stdout is not a tty") def setUp(self): # sanity check self.assertNotWrapped() def tearDown(self): _wipe_internal_state_for_tests() sys.stdout = orig_stdout sys.stderr = orig_stderr def assertWrapped(self): self.assertIsNot(sys.stdout, orig_stdout, 'stdout should be wrapped') self.assertIsNot(sys.stderr, orig_stderr, 'stderr should be wrapped') self.assertTrue(isinstance(sys.stdout, StreamWrapper), 'bad stdout wrapper') self.assertTrue(isinstance(sys.stderr, StreamWrapper), 'bad stderr wrapper') def assertNotWrapped(self): self.assertIs(sys.stdout, orig_stdout, 'stdout should not be wrapped') self.assertIs(sys.stderr, orig_stderr, 'stderr should not be wrapped') @patch('colorama.initialise.reset_all') @patch('colorama.ansitowin32.winapi_test', lambda *_: True) @patch('colorama.ansitowin32.enable_vt_processing', lambda *_: False) def testInitWrapsOnWindows(self, _): with osname("nt"): init() self.assertWrapped() @patch('colorama.initialise.reset_all') @patch('colorama.ansitowin32.winapi_test', lambda *_: False) def testInitDoesntWrapOnEmulatedWindows(self, _): with osname("nt"): init() self.assertNotWrapped() def testInitDoesntWrapOnNonWindows(self): with osname("posix"): init() self.assertNotWrapped() def testInitDoesntWrapIfNone(self): with replace_by(None): init() # We can't use assertNotWrapped here because replace_by(None) # changes stdout/stderr already. self.assertIsNone(sys.stdout) self.assertIsNone(sys.stderr) def testInitAutoresetOnWrapsOnAllPlatforms(self): with osname("posix"): init(autoreset=True) self.assertWrapped() def testInitWrapOffDoesntWrapOnWindows(self): with osname("nt"): init(wrap=False) self.assertNotWrapped() def testInitWrapOffIncompatibleWithAutoresetOn(self): self.assertRaises(ValueError, lambda: init(autoreset=True, wrap=False)) @patch('colorama.win32.SetConsoleTextAttribute') @patch('colorama.initialise.AnsiToWin32') def testAutoResetPassedOn(self, mockATW32, _): with osname("nt"): init(autoreset=True) self.assertEqual(len(mockATW32.call_args_list), 2) self.assertEqual(mockATW32.call_args_list[1][1]['autoreset'], True) self.assertEqual(mockATW32.call_args_list[0][1]['autoreset'], True) @patch('colorama.initialise.AnsiToWin32') def testAutoResetChangeable(self, mockATW32): with osname("nt"): init() init(autoreset=True) self.assertEqual(len(mockATW32.call_args_list), 4) self.assertEqual(mockATW32.call_args_list[2][1]['autoreset'], True) self.assertEqual(mockATW32.call_args_list[3][1]['autoreset'], True) init() self.assertEqual(len(mockATW32.call_args_list), 6) self.assertEqual( mockATW32.call_args_list[4][1]['autoreset'], False) self.assertEqual( mockATW32.call_args_list[5][1]['autoreset'], False) @patch('colorama.initialise.atexit.register') def testAtexitRegisteredOnlyOnce(self, mockRegister): init() self.assertTrue(mockRegister.called) mockRegister.reset_mock() init() self.assertFalse(mockRegister.called) class JustFixWindowsConsoleTest(TestCase): def _reset(self): _wipe_internal_state_for_tests() sys.stdout = orig_stdout sys.stderr = orig_stderr def tearDown(self): self._reset() @patch("colorama.ansitowin32.winapi_test", lambda: True) def testJustFixWindowsConsole(self): if sys.platform != "win32": # just_fix_windows_console should be a no-op just_fix_windows_console() self.assertIs(sys.stdout, orig_stdout) self.assertIs(sys.stderr, orig_stderr) else: def fake_std(): # Emulate stdout=not a tty, stderr=tty # to check that we handle both cases correctly stdout = Mock() stdout.closed = False stdout.isatty.return_value = False stdout.fileno.return_value = 1 sys.stdout = stdout stderr = Mock() stderr.closed = False stderr.isatty.return_value = True stderr.fileno.return_value = 2 sys.stderr = stderr for native_ansi in [False, True]: with patch( 'colorama.ansitowin32.enable_vt_processing', lambda *_: native_ansi ): self._reset() fake_std() # Regular single-call test prev_stdout = sys.stdout prev_stderr = sys.stderr just_fix_windows_console() self.assertIs(sys.stdout, prev_stdout) if native_ansi: self.assertIs(sys.stderr, prev_stderr) else: self.assertIsNot(sys.stderr, prev_stderr) # second call without resetting is always a no-op prev_stdout = sys.stdout prev_stderr = sys.stderr just_fix_windows_console() self.assertIs(sys.stdout, prev_stdout) self.assertIs(sys.stderr, prev_stderr) self._reset() fake_std() # If init() runs first, just_fix_windows_console should be a no-op init() prev_stdout = sys.stdout prev_stderr = sys.stderr just_fix_windows_console() self.assertIs(prev_stdout, sys.stdout) self.assertIs(prev_stderr, sys.stderr) if __name__ == '__main__': main()