from test import test_support

import unittest

import sys, cStringIO, subprocess

import quopri

ENCSAMPLE = """\

Here's a bunch of special=20

=A1=A2=A3=A4=A5=A6=A7=A8=A9

=AA=AB=AC=AD=AE=AF=B0=B1=B2=B3

=B4=B5=B6=B7=B8=B9=BA=BB=BC=BD=BE

=BF=C0=C1=C2=C3=C4=C5=C6

=C7=C8=C9=CA=CB=CC=CD=CE=CF

=D0=D1=D2=D3=D4=D5=D6=D7

=D8=D9=DA=DB=DC=DD=DE=DF

=E0=E1=E2=E3=E4=E5=E6=E7

=E8=E9=EA=EB=EC=ED=EE=EF

=F0=F1=F2=F3=F4=F5=F6=F7

=F8=F9=FA=FB=FC=FD=FE=FF

characters... have fun!

"""

# First line ends with a space

DECSAMPLE = "Here's a bunch of special \n" + \

"""\

\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9

\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3

\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe

\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6

\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf

\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7

\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf

\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7

\xe8\xe9\xea\xeb\xec\xed\xee\xef

\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7

\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff

characters... have fun!

"""

def withpythonimplementation(testfunc):

    def newtest(self):

        # Test default implementation

        testfunc(self)

        # Test Python implementation

        if quopri.b2a_qp is not None or quopri.a2b_qp is not None:

            oldencode = quopri.b2a_qp

            olddecode = quopri.a2b_qp

            try:

                quopri.b2a_qp = None

                quopri.a2b_qp = None

                testfunc(self)

            finally:

                quopri.b2a_qp = oldencode

                quopri.a2b_qp = olddecode

    newtest.__name__ = testfunc.__name__

    return newtest

class QuopriTestCase(unittest.TestCase):

    # Each entry is a tuple of (plaintext, encoded string).  These strings are

    # used in the "quotetabs=0" tests.

    STRINGS = (

        # Some normal strings

        ('hello', 'hello'),

        ('''hello

        there

        world''', '''hello

        there

        world'''),

        ('''hello

        there

        world

''', '''hello

        there

        world

'''),

        ('\201\202\203', '=81=82=83'),

        # Add some trailing MUST QUOTE strings

        ('hello ', 'hello=20'),

        ('hello\t', 'hello=09'),

        # Some long lines.  First, a single line of 108 characters

        ('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\xd8\xd9\xda\xdb\xdc\xdd\xde\xdfxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',

         '''xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx=D8=D9=DA=DB=DC=DD=DE=DFx=

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'''),

        # A line of exactly 76 characters, no soft line break should be needed

        ('yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy',

        'yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy'),

        # A line of 77 characters, forcing a soft line break at position 75,

        # and a second line of exactly 2 characters (because the soft line

        # break `=' sign counts against the line length limit).

        ('zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz',

         '''zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz=

zz'''),

        # A line of 151 characters, forcing a soft line break at position 75,

        # with a second line of exactly 76 characters and no trailing =

        ('zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz',

         '''zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz=

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz'''),

        # A string containing a hard line break, but which the first line is

        # 151 characters and the second line is exactly 76 characters.  This

        # should leave us with three lines, the first which has a soft line

        # break, and which the second and third do not.

        ('''yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz''',

         '''yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy=

yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz'''),

        # Now some really complex stuff ;)

        (DECSAMPLE, ENCSAMPLE),

        )

    # These are used in the "quotetabs=1" tests.

    ESTRINGS = (

        ('hello world', 'hello=20world'),

        ('hello\tworld', 'hello=09world'),

        )

    # These are used in the "header=1" tests.

    HSTRINGS = (

        ('hello world', 'hello_world'),

        ('hello_world', 'hello=5Fworld'),

        )

    @withpythonimplementation

    def test_encodestring(self):

        for p, e in self.STRINGS:

            self.assert_(quopri.encodestring(p) == e)

    @withpythonimplementation

    def test_decodestring(self):

        for p, e in self.STRINGS:

            self.assert_(quopri.decodestring(e) == p)

    @withpythonimplementation

    def test_idempotent_string(self):

        for p, e in self.STRINGS:

            self.assert_(quopri.decodestring(quopri.encodestring(e)) == e)

    @withpythonimplementation

    def test_encode(self):

        for p, e in self.STRINGS:

            infp = cStringIO.StringIO(p)

            outfp = cStringIO.StringIO()

            quopri.encode(infp, outfp, quotetabs=False)

            self.assert_(outfp.getvalue() == e)

    @withpythonimplementation

    def test_decode(self):

        for p, e in self.STRINGS:

            infp = cStringIO.StringIO(e)

            outfp = cStringIO.StringIO()

            quopri.decode(infp, outfp)

            self.assert_(outfp.getvalue() == p)

    @withpythonimplementation

    def test_embedded_ws(self):

        for p, e in self.ESTRINGS:

            self.assert_(quopri.encodestring(p, quotetabs=True) == e)

            self.assert_(quopri.decodestring(e) == p)

    @withpythonimplementation

    def test_encode_header(self):

        for p, e in self.HSTRINGS:

            self.assert_(quopri.encodestring(p, header=True) == e)

    @withpythonimplementation

    def test_decode_header(self):

        for p, e in self.HSTRINGS:

            self.assert_(quopri.decodestring(e, header=True) == p)

    def test_scriptencode(self):

        (p, e) = self.STRINGS[-1]

        process = subprocess.Popen([sys.executable, "-mquopri"],

                                   stdin=subprocess.PIPE, stdout=subprocess.PIPE)

        cout, cerr = process.communicate(p)

        # On Windows, Python will output the result to stdout using

        # CRLF, as the mode of stdout is text mode. To compare this

        # with the expected result, we need to do a line-by-line comparison.

        self.assertEqual(cout.splitlines(), e.splitlines())

    def test_scriptdecode(self):

        (p, e) = self.STRINGS[-1]

        process = subprocess.Popen([sys.executable, "-mquopri", "-d"],

                                   stdin=subprocess.PIPE, stdout=subprocess.PIPE)

        cout, cerr = process.communicate(e)

        self.assertEqual(cout.splitlines(), p.splitlines())

def test_main():

    test_support.run_unittest(QuopriTestCase)

if __name__ == "__main__":

    test_main()