Add third_party/pexpect

third_party/pexpect/tests/test_unicode.py

Index: third_party/pexpect/tests/test_unicode.py
diff --git a/third_party/pexpect/tests/test_unicode.py b/third_party/pexpect/tests/test_unicode.py
new file mode 100644
index 0000000000000000000000000000000000000000..1d2f933939de5bce9a3a0d3f69d068e1884eca11
--- /dev/null
+++ b/third_party/pexpect/tests/test_unicode.py
@@ -0,0 +1,187 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import platform
+import tempfile
+import sys
+import time
+
+import pexpect
+import unittest
+from . import PexpectTestCase
+
+# the program cat(1) may display ^D\x08\x08 when \x04 (EOF, Ctrl-D) is sent
+_CAT_EOF = '^D\x08\x08'
+
+class UnicodeTests(PexpectTestCase.PexpectTestCase):
+    def test_expect_basic (self):
+        p = pexpect.spawnu('cat')
+        p.sendline('Hello')
+        p.sendline('there')
+        p.sendline('Mr. þython') # þ is more like th than p, but never mind
+        p.expect('Hello')
+        p.expect('there')
+        p.expect('Mr. þython')
+        p.sendeof ()
+        p.expect (pexpect.EOF)
+
+    def test_expect_exact_basic (self):
+        p = pexpect.spawnu('cat')
+        p.sendline('Hello')
+        p.sendline('there')
+        p.sendline('Mr. þython')
+        p.expect_exact('Hello')
+        p.expect_exact('there')
+        p.expect_exact('Mr. þython')
+        p.sendeof()
+        p.expect_exact (pexpect.EOF)
+
+    def test_expect_setecho_toggle(self):
+        '''This tests that echo may be toggled off.
+        '''
+        p = pexpect.spawnu('cat', timeout=5)
+        try:
+            self._expect_echo_toggle_off(p)
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+        self._expect_echo_toggle_on(p)
+
+    def test_expect_echo_exact (self):
+        '''Like test_expect_echo(), but using expect_exact().
+        '''
+        p = pexpect.spawnu('cat', timeout=5)
+        p.expect = p.expect_exact
+        self._expect_echo(p)
+
+    def test_expect_setecho_toggle_exact(self):
+        p = pexpect.spawnu('cat', timeout=5)
+        p.expect = p.expect_exact
+        try:
+            self._expect_echo_toggle_off(p)
+        except IOError:
+            if sys.platform.lower().startswith('sunos'):
+                if hasattr(unittest, 'SkipTest'):
+                    raise unittest.SkipTest("Not supported on this platform.")
+                return 'skip'
+            raise
+        self._expect_echo_toggle_on(p)
+
+    def _expect_echo (self, p):
+        p.sendline('1234') # Should see this twice (once from tty echo and again from cat).
+        index = p.expect (['1234', 'abcdé', 'wxyz', pexpect.EOF, pexpect.TIMEOUT])
+        assert index == 0, (index, p.before)
+        index = p.expect (['1234', 'abcdé', 'wxyz', pexpect.EOF])
+        assert index == 0, index
+
+    def _expect_echo_toggle_off(self, p):
+        p.setecho(0) # Turn off tty echo
+        p.waitnoecho()
+        p.sendline('abcdé') # Now, should only see this once.
+        p.sendline('wxyz') # Should also be only once.
+        index = p.expect ([pexpect.EOF,pexpect.TIMEOUT, 'abcdé', 'wxyz', '1234'])
+        assert index == 2, index
+        index = p.expect ([pexpect.EOF, 'abcdé', 'wxyz', '7890'])
+        assert index == 2, index
+
+    def _expect_echo_toggle_on(self, p):
+        p.setecho(1) # Turn on tty echo
+        time.sleep(0.2) # there is no waitecho() !
+        p.sendline('7890') # Should see this twice.
+        index = p.expect ([pexpect.EOF, 'abcdé', 'wxyz', '7890'])
+        assert index == 3, index
+        index = p.expect ([pexpect.EOF, 'abcdé', 'wxyz', '7890'])
+        assert index == 3, index
+        p.sendeof()
+
+    def test_log_unicode(self):
+        msg = "abcΩ÷"
+        filename_send = tempfile.mktemp()
+        filename_read = tempfile.mktemp()
+        p = pexpect.spawnu('cat')
+        if platform.python_version_tuple() < ('3', '0', '0'):
+            import codecs
+            def open(fname, mode, **kwargs):
+                if 'newline' in kwargs:
+                    del kwargs['newline']
+                return codecs.open(fname, mode, **kwargs)
+        else:
+            import io
+            open = io.open
+
+        p.logfile_send = open(filename_send, 'w', encoding='utf-8')
+        p.logfile_read = open(filename_read, 'w', encoding='utf-8')
+        p.sendline(msg)
+        p.sendeof()
+        p.expect(pexpect.EOF)
+        p.close()
+        p.logfile_send.close()
+        p.logfile_read.close()
+
+        # ensure the 'send' log is correct,
+        with open(filename_send, 'r', encoding='utf-8') as f:
+            self.assertEqual(f.read(), msg + '\n\x04')
+
+        # ensure the 'read' log is correct,
+        with open(filename_read, 'r', encoding='utf-8', newline='') as f:
+            output = f.read().replace(_CAT_EOF, '')
+            self.assertEqual(output, (msg + '\r\n')*2 )
+
+
+    def test_spawn_expect_ascii_unicode(self):
+        # A bytes-based spawn should be able to handle ASCII-only unicode, for
+        # backwards compatibility.
+        p = pexpect.spawn('cat')
+        p.sendline('Camelot')
+        p.expect('Camelot')
+
+        p.sendline('Aargh')
+        p.sendline('Aårgh')
+        p.expect_exact('Aargh')
+
+        p.sendeof()
+        p.expect(pexpect.EOF)
+
+    def test_spawn_send_unicode(self):
+        # A bytes-based spawn should be able to send arbitrary unicode
+        p = pexpect.spawn('cat')
+        p.sendline('3½')
+        p.sendeof()
+        p.expect(pexpect.EOF)
+
+    def test_spawn_utf8_incomplete(self):
+        # This test case ensures correct incremental decoding, which
+        # otherwise fails when the stream inspected by os.read()
+        # does not align exactly at a utf-8 multibyte boundry:
+        #    UnicodeDecodeError: 'utf8' codec can't decode byte 0xe2 in
+        #                        position 0: unexpected end of data
+        p = pexpect.spawnu('cat', maxread=1)
+        p.sendline('▁▂▃▄▅▆▇█')
+        p.sendeof()
+        p.expect('▁▂▃▄▅▆▇█')
+
+    def test_readline_bin_echo(self):
+        # Test using readline() with spawnu objects. pexpect 3.2 had threw
+        # a TypeError when concatenating a bytestring to a unicode type.
+
+        # given,
+        child = pexpect.spawnu('echo', ['input', ])
+
+        # exercise,
+        assert child.readline() == 'input' + child.crlf
+
+    def test_unicode_argv(self):
+        """ Ensure a program can be executed with unicode arguments. """
+        p = pexpect.spawn(u'echo ǝpoɔıun', timeout=5, encoding='utf8')
+        p.expect(u'ǝpoɔıun')
+        p.expect(pexpect.EOF)
+        assert not p.isalive()
+        assert p.exitstatus == 0
+
+if __name__ == '__main__':
+    unittest.main()
+
+suite = unittest.makeSuite(UnicodeTests, 'test')