#!/usr/bin/env python

# -*- coding: iso-8859-1 -*-

from test import test_support

import marshal

import sys

import unittest

import os

class IntTestCase(unittest.TestCase):

    def test_ints(self):

        # Test the full range of Python ints.

        n = sys.maxint

        while n:

            for expected in (-n, n):

                s = marshal.dumps(expected)

                got = marshal.loads(s)

                self.assertEqual(expected, got)

                marshal.dump(expected, file(test_support.TESTFN, "wb"))

                got = marshal.load(file(test_support.TESTFN, "rb"))

                self.assertEqual(expected, got)

            n = n >> 1

        os.unlink(test_support.TESTFN)

    def test_int64(self):

        # Simulate int marshaling on a 64-bit box.  This is most interesting if

        # we're running the test on a 32-bit box, of course.

        def to_little_endian_string(value, nbytes):

            bytes = []

            for i in range(nbytes):

                bytes.append(chr(value & 0xff))

                value >>= 8

            return ''.join(bytes)

        maxint64 = (1L << 63) - 1

        minint64 = -maxint64-1

        for base in maxint64, minint64, -maxint64, -(minint64 >> 1):

            while base:

                s = 'I' + to_little_endian_string(base, 8)

                got = marshal.loads(s)

                self.assertEqual(base, got)

                if base == -1:  # a fixed-point for shifting right 1

                    base = 0

                else:

                    base >>= 1

    def test_bool(self):

        for b in (True, False):

            new = marshal.loads(marshal.dumps(b))

            self.assertEqual(b, new)

            self.assertEqual(type(b), type(new))

            marshal.dump(b, file(test_support.TESTFN, "wb"))

            new = marshal.load(file(test_support.TESTFN, "rb"))

            self.assertEqual(b, new)

            self.assertEqual(type(b), type(new))

class FloatTestCase(unittest.TestCase):

    def test_floats(self):

        # Test a few floats

        small = 1e-25

        n = sys.maxint * 3.7e250

        while n > small:

            for expected in (-n, n):

                f = float(expected)

                s = marshal.dumps(f)

                got = marshal.loads(s)

                self.assertEqual(f, got)

                marshal.dump(f, file(test_support.TESTFN, "wb"))

                got = marshal.load(file(test_support.TESTFN, "rb"))

                self.assertEqual(f, got)

            n /= 123.4567

        f = 0.0

        s = marshal.dumps(f, 2)

        got = marshal.loads(s)

        self.assertEqual(f, got)

        # and with version <= 1 (floats marshalled differently then)

        s = marshal.dumps(f, 1)

        got = marshal.loads(s)

        self.assertEqual(f, got)

        n = sys.maxint * 3.7e-250

        while n < small:

            for expected in (-n, n):

                f = float(expected)

                s = marshal.dumps(f)

                got = marshal.loads(s)

                self.assertEqual(f, got)

                s = marshal.dumps(f, 1)

                got = marshal.loads(s)

                self.assertEqual(f, got)

                marshal.dump(f, file(test_support.TESTFN, "wb"))

                got = marshal.load(file(test_support.TESTFN, "rb"))

                self.assertEqual(f, got)

                marshal.dump(f, file(test_support.TESTFN, "wb"), 1)

                got = marshal.load(file(test_support.TESTFN, "rb"))

                self.assertEqual(f, got)

            n *= 123.4567

        os.unlink(test_support.TESTFN)

class StringTestCase(unittest.TestCase):

    def test_unicode(self):

        for s in [u"", u"Andrè Previn", u"abc", u" "*10000]:

            new = marshal.loads(marshal.dumps(s))

            self.assertEqual(s, new)

            self.assertEqual(type(s), type(new))

            marshal.dump(s, file(test_support.TESTFN, "wb"))

            new = marshal.load(file(test_support.TESTFN, "rb"))

            self.assertEqual(s, new)

            self.assertEqual(type(s), type(new))

        os.unlink(test_support.TESTFN)

    def test_string(self):

        for s in ["", "Andrè Previn", "abc", " "*10000]:

            new = marshal.loads(marshal.dumps(s))

            self.assertEqual(s, new)

            self.assertEqual(type(s), type(new))

            marshal.dump(s, file(test_support.TESTFN, "wb"))

            new = marshal.load(file(test_support.TESTFN, "rb"))

            self.assertEqual(s, new)

            self.assertEqual(type(s), type(new))

        os.unlink(test_support.TESTFN)

    def test_buffer(self):

        for s in ["", "Andrè Previn", "abc", " "*10000]:

            b = buffer(s)

            new = marshal.loads(marshal.dumps(b))

            self.assertEqual(s, new)

            marshal.dump(b, file(test_support.TESTFN, "wb"))

            new = marshal.load(file(test_support.TESTFN, "rb"))

            self.assertEqual(s, new)

        os.unlink(test_support.TESTFN)

class ExceptionTestCase(unittest.TestCase):

    def test_exceptions(self):

        new = marshal.loads(marshal.dumps(StopIteration))

        self.assertEqual(StopIteration, new)

class CodeTestCase(unittest.TestCase):

    def test_code(self):

        co = ExceptionTestCase.test_exceptions.func_code

        new = marshal.loads(marshal.dumps(co))

        self.assertEqual(co, new)

class ContainerTestCase(unittest.TestCase):

    d = {'astring': 'foo@bar.baz.spam',

         'afloat': 7283.43,

         'anint': 2**20,

         'ashortlong': 2L,

         'alist': ['.zyx.41'],

         'atuple': ('.zyx.41',)*10,

         'aboolean': False,

         'aunicode': u"Andrè Previn"

         }

    def test_dict(self):

        new = marshal.loads(marshal.dumps(self.d))

        self.assertEqual(self.d, new)

        marshal.dump(self.d, file(test_support.TESTFN, "wb"))

        new = marshal.load(file(test_support.TESTFN, "rb"))

        self.assertEqual(self.d, new)

        os.unlink(test_support.TESTFN)

    def test_list(self):

        lst = self.d.items()

        new = marshal.loads(marshal.dumps(lst))

        self.assertEqual(lst, new)

        marshal.dump(lst, file(test_support.TESTFN, "wb"))

        new = marshal.load(file(test_support.TESTFN, "rb"))

        self.assertEqual(lst, new)

        os.unlink(test_support.TESTFN)

    def test_tuple(self):

        t = tuple(self.d.keys())

        new = marshal.loads(marshal.dumps(t))

        self.assertEqual(t, new)

        marshal.dump(t, file(test_support.TESTFN, "wb"))

        new = marshal.load(file(test_support.TESTFN, "rb"))

        self.assertEqual(t, new)

        os.unlink(test_support.TESTFN)

    def test_sets(self):

        for constructor in (set, frozenset):

            t = constructor(self.d.keys())

            new = marshal.loads(marshal.dumps(t))

            self.assertEqual(t, new)

            self.assert_(isinstance(new, constructor))

            self.assertNotEqual(id(t), id(new))

            marshal.dump(t, file(test_support.TESTFN, "wb"))

            new = marshal.load(file(test_support.TESTFN, "rb"))

            self.assertEqual(t, new)

            os.unlink(test_support.TESTFN)

class BugsTestCase(unittest.TestCase):

    def test_bug_5888452(self):

        # Simple-minded check for SF 588452: Debug build crashes

        marshal.dumps([128] * 1000)

    def test_patch_873224(self):

        self.assertRaises(Exception, marshal.loads, '0')

        self.assertRaises(Exception, marshal.loads, 'f')

        self.assertRaises(Exception, marshal.loads, marshal.dumps(5L)[:-1])

    def test_version_argument(self):

        # Python 2.4.0 crashes for any call to marshal.dumps(x, y)

        self.assertEquals(marshal.loads(marshal.dumps(5, 0)), 5)

        self.assertEquals(marshal.loads(marshal.dumps(5, 1)), 5)

    def test_fuzz(self):

        # simple test that it's at least not *totally* trivial to

        # crash from bad marshal data

        for c in [chr(i) for i in range(256)]:

            try:

                marshal.loads(c)

            except Exception:

                pass

    def test_loads_recursion(self):

        s = 'c' + ('X' * 4*4) + '{' * 2**20

        self.assertRaises(ValueError, marshal.loads, s)

    def test_recursion_limit(self):

        # Create a deeply nested structure.

        head = last = []

        # The max stack depth should match the value in Python/marshal.c.

        MAX_MARSHAL_STACK_DEPTH = 2000

        for i in range(MAX_MARSHAL_STACK_DEPTH - 2):

            last.append([0])

            last = last[-1]

        # Verify we don't blow out the stack with dumps/load.

        data = marshal.dumps(head)

        new_head = marshal.loads(data)

        # Don't use == to compare objects, it can exceed the recursion limit.

        self.assertEqual(len(new_head), len(head))

        self.assertEqual(len(new_head[0]), len(head[0]))

        self.assertEqual(len(new_head[-1]), len(head[-1]))

        last.append([0])

        self.assertRaises(ValueError, marshal.dumps, head)

    def test_exact_type_match(self):

        # Former bug:

        #   >>> class Int(int): pass

        #   >>> type(loads(dumps(Int())))

        #   <type 'int'>

        for typ in (int, long, float, complex, tuple, list, dict, set, frozenset):

            # Note: str and unicode sublclasses are not tested because they get handled

            # by marshal's routines for objects supporting the buffer API.

            subtyp = type('subtyp', (typ,), {})

            self.assertRaises(ValueError, marshal.dumps, subtyp())

    # Issue #1792 introduced a change in how marshal increases the size of its

    # internal buffer; this test ensures that the new code is exercised.

    def test_large_marshal(self):

        size = int(1e6)

        testString = 'abc' * size

        marshal.dumps(testString)

def test_main():

    test_support.run_unittest(IntTestCase,

                              FloatTestCase,

                              StringTestCase,

                              CodeTestCase,

                              ContainerTestCase,

                              ExceptionTestCase,

                              BugsTestCase)

if __name__ == "__main__":

    test_main()