[pypy-svn] pypy fast-forward: Add test_array.py, to be modified in next commit

amauryfa commits-noreply at bitbucket.org
Mon Jan 3 23:13:55 CET 2011


Author: Amaury Forgeot d'Arc <amauryfa at gmail.com>
Branch: fast-forward
Changeset: r40357:c39c296813d8
Date: 2011-01-03 23:13 +0100
http://bitbucket.org/pypy/pypy/changeset/c39c296813d8/

Log:	Add test_array.py, to be modified in next commit

diff --git a/lib-python/modified-2.7.0/test/test_array.py b/lib-python/modified-2.7.0/test/test_array.py
new file mode 100755
--- /dev/null
+++ b/lib-python/modified-2.7.0/test/test_array.py
@@ -0,0 +1,1095 @@
+#! /usr/bin/env python
+"""Test the arraymodule.
+   Roger E. Masse
+"""
+
+import unittest
+from test import test_support
+from weakref import proxy
+import array, cStringIO
+from cPickle import loads, dumps, HIGHEST_PROTOCOL
+
+class ArraySubclass(array.array):
+    pass
+
+class ArraySubclassWithKwargs(array.array):
+    def __init__(self, typecode, newarg=None):
+        array.array.__init__(typecode)
+
+tests = [] # list to accumulate all tests
+typecodes = "cubBhHiIlLfd"
+
+class BadConstructorTest(unittest.TestCase):
+
+    def test_constructor(self):
+        self.assertRaises(TypeError, array.array)
+        self.assertRaises(TypeError, array.array, spam=42)
+        self.assertRaises(TypeError, array.array, 'xx')
+        self.assertRaises(ValueError, array.array, 'x')
+
+tests.append(BadConstructorTest)
+
+class BaseTest(unittest.TestCase):
+    # Required class attributes (provided by subclasses
+    # typecode: the typecode to test
+    # example: an initializer usable in the constructor for this type
+    # smallerexample: the same length as example, but smaller
+    # biggerexample: the same length as example, but bigger
+    # outside: An entry that is not in example
+    # minitemsize: the minimum guaranteed itemsize
+
+    def assertEntryEqual(self, entry1, entry2):
+        self.assertEqual(entry1, entry2)
+
+    def badtypecode(self):
+        # Return a typecode that is different from our own
+        return typecodes[(typecodes.index(self.typecode)+1) % len(typecodes)]
+
+    def test_constructor(self):
+        a = array.array(self.typecode)
+        self.assertEqual(a.typecode, self.typecode)
+        self.assertTrue(a.itemsize>=self.minitemsize)
+        self.assertRaises(TypeError, array.array, self.typecode, None)
+
+    def test_len(self):
+        a = array.array(self.typecode)
+        a.append(self.example[0])
+        self.assertEqual(len(a), 1)
+
+        a = array.array(self.typecode, self.example)
+        self.assertEqual(len(a), len(self.example))
+
+    def test_buffer_info(self):
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(TypeError, a.buffer_info, 42)
+        bi = a.buffer_info()
+        self.assertIsInstance(bi, tuple)
+        self.assertEqual(len(bi), 2)
+        self.assertIsInstance(bi[0], (int, long))
+        self.assertIsInstance(bi[1], int)
+        self.assertEqual(bi[1], len(a))
+
+    def test_byteswap(self):
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(TypeError, a.byteswap, 42)
+        if a.itemsize in (1, 2, 4, 8):
+            b = array.array(self.typecode, self.example)
+            b.byteswap()
+            if a.itemsize==1:
+                self.assertEqual(a, b)
+            else:
+                self.assertNotEqual(a, b)
+            b.byteswap()
+            self.assertEqual(a, b)
+
+    def test_copy(self):
+        import copy
+        a = array.array(self.typecode, self.example)
+        b = copy.copy(a)
+        self.assertNotEqual(id(a), id(b))
+        self.assertEqual(a, b)
+
+    def test_deepcopy(self):
+        import copy
+        a = array.array(self.typecode, self.example)
+        b = copy.deepcopy(a)
+        self.assertNotEqual(id(a), id(b))
+        self.assertEqual(a, b)
+
+    def test_pickle(self):
+        for protocol in range(HIGHEST_PROTOCOL + 1):
+            a = array.array(self.typecode, self.example)
+            b = loads(dumps(a, protocol))
+            self.assertNotEqual(id(a), id(b))
+            self.assertEqual(a, b)
+
+            a = ArraySubclass(self.typecode, self.example)
+            a.x = 10
+            b = loads(dumps(a, protocol))
+            self.assertNotEqual(id(a), id(b))
+            self.assertEqual(a, b)
+            self.assertEqual(a.x, b.x)
+            self.assertEqual(type(a), type(b))
+
+    def test_pickle_for_empty_array(self):
+        for protocol in range(HIGHEST_PROTOCOL + 1):
+            a = array.array(self.typecode)
+            b = loads(dumps(a, protocol))
+            self.assertNotEqual(id(a), id(b))
+            self.assertEqual(a, b)
+
+            a = ArraySubclass(self.typecode)
+            a.x = 10
+            b = loads(dumps(a, protocol))
+            self.assertNotEqual(id(a), id(b))
+            self.assertEqual(a, b)
+            self.assertEqual(a.x, b.x)
+            self.assertEqual(type(a), type(b))
+
+    def test_insert(self):
+        a = array.array(self.typecode, self.example)
+        a.insert(0, self.example[0])
+        self.assertEqual(len(a), 1+len(self.example))
+        self.assertEqual(a[0], a[1])
+        self.assertRaises(TypeError, a.insert)
+        self.assertRaises(TypeError, a.insert, None)
+        self.assertRaises(TypeError, a.insert, 0, None)
+
+        a = array.array(self.typecode, self.example)
+        a.insert(-1, self.example[0])
+        self.assertEqual(
+            a,
+            array.array(
+                self.typecode,
+                self.example[:-1] + self.example[:1] + self.example[-1:]
+            )
+        )
+
+        a = array.array(self.typecode, self.example)
+        a.insert(-1000, self.example[0])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[:1] + self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        a.insert(1000, self.example[0])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example + self.example[:1])
+        )
+
+    def test_tofromfile(self):
+        a = array.array(self.typecode, 2*self.example)
+        self.assertRaises(TypeError, a.tofile)
+        self.assertRaises(TypeError, a.tofile, cStringIO.StringIO())
+        test_support.unlink(test_support.TESTFN)
+        f = open(test_support.TESTFN, 'wb')
+        try:
+            a.tofile(f)
+            f.close()
+            b = array.array(self.typecode)
+            f = open(test_support.TESTFN, 'rb')
+            self.assertRaises(TypeError, b.fromfile)
+            self.assertRaises(
+                TypeError,
+                b.fromfile,
+                cStringIO.StringIO(), len(self.example)
+            )
+            b.fromfile(f, len(self.example))
+            self.assertEqual(b, array.array(self.typecode, self.example))
+            self.assertNotEqual(a, b)
+            b.fromfile(f, len(self.example))
+            self.assertEqual(a, b)
+            self.assertRaises(EOFError, b.fromfile, f, 1)
+            f.close()
+        finally:
+            if not f.closed:
+                f.close()
+            test_support.unlink(test_support.TESTFN)
+
+    def test_fromfile_ioerror(self):
+        # Issue #5395: Check if fromfile raises a proper IOError
+        # instead of EOFError.
+        a = array.array(self.typecode)
+        f = open(test_support.TESTFN, 'wb')
+        try:
+            self.assertRaises(IOError, a.fromfile, f, len(self.example))
+        finally:
+            f.close()
+            test_support.unlink(test_support.TESTFN)
+
+    def test_filewrite(self):
+        a = array.array(self.typecode, 2*self.example)
+        f = open(test_support.TESTFN, 'wb')
+        try:
+            f.write(a)
+            f.close()
+            b = array.array(self.typecode)
+            f = open(test_support.TESTFN, 'rb')
+            b.fromfile(f, len(self.example))
+            self.assertEqual(b, array.array(self.typecode, self.example))
+            self.assertNotEqual(a, b)
+            b.fromfile(f, len(self.example))
+            self.assertEqual(a, b)
+            f.close()
+        finally:
+            if not f.closed:
+                f.close()
+            test_support.unlink(test_support.TESTFN)
+
+    def test_tofromlist(self):
+        a = array.array(self.typecode, 2*self.example)
+        b = array.array(self.typecode)
+        self.assertRaises(TypeError, a.tolist, 42)
+        self.assertRaises(TypeError, b.fromlist)
+        self.assertRaises(TypeError, b.fromlist, 42)
+        self.assertRaises(TypeError, b.fromlist, [None])
+        b.fromlist(a.tolist())
+        self.assertEqual(a, b)
+
+    def test_tofromstring(self):
+        a = array.array(self.typecode, 2*self.example)
+        b = array.array(self.typecode)
+        self.assertRaises(TypeError, a.tostring, 42)
+        self.assertRaises(TypeError, b.fromstring)
+        self.assertRaises(TypeError, b.fromstring, 42)
+        b.fromstring(a.tostring())
+        self.assertEqual(a, b)
+        if a.itemsize>1:
+            self.assertRaises(ValueError, b.fromstring, "x")
+
+    def test_repr(self):
+        a = array.array(self.typecode, 2*self.example)
+        self.assertEqual(a, eval(repr(a), {"array": array.array}))
+
+        a = array.array(self.typecode)
+        self.assertEqual(repr(a), "array('%s')" % self.typecode)
+
+    def test_str(self):
+        a = array.array(self.typecode, 2*self.example)
+        str(a)
+
+    def test_cmp(self):
+        a = array.array(self.typecode, self.example)
+        self.assertTrue((a == 42) is False)
+        self.assertTrue((a != 42) is True)
+
+        self.assertTrue((a == a) is True)
+        self.assertTrue((a != a) is False)
+        self.assertTrue((a < a) is False)
+        self.assertTrue((a <= a) is True)
+        self.assertTrue((a > a) is False)
+        self.assertTrue((a >= a) is True)
+
+        al = array.array(self.typecode, self.smallerexample)
+        ab = array.array(self.typecode, self.biggerexample)
+
+        self.assertTrue((a == 2*a) is False)
+        self.assertTrue((a != 2*a) is True)
+        self.assertTrue((a < 2*a) is True)
+        self.assertTrue((a <= 2*a) is True)
+        self.assertTrue((a > 2*a) is False)
+        self.assertTrue((a >= 2*a) is False)
+
+        self.assertTrue((a == al) is False)
+        self.assertTrue((a != al) is True)
+        self.assertTrue((a < al) is False)
+        self.assertTrue((a <= al) is False)
+        self.assertTrue((a > al) is True)
+        self.assertTrue((a >= al) is True)
+
+        self.assertTrue((a == ab) is False)
+        self.assertTrue((a != ab) is True)
+        self.assertTrue((a < ab) is True)
+        self.assertTrue((a <= ab) is True)
+        self.assertTrue((a > ab) is False)
+        self.assertTrue((a >= ab) is False)
+
+    def test_add(self):
+        a = array.array(self.typecode, self.example) \
+            + array.array(self.typecode, self.example[::-1])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example + self.example[::-1])
+        )
+
+        b = array.array(self.badtypecode())
+        self.assertRaises(TypeError, a.__add__, b)
+
+        self.assertRaises(TypeError, a.__add__, "bad")
+
+    def test_iadd(self):
+        a = array.array(self.typecode, self.example[::-1])
+        b = a
+        a += array.array(self.typecode, 2*self.example)
+        self.assertTrue(a is b)
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[::-1]+2*self.example)
+        )
+        a = array.array(self.typecode, self.example)
+        a += a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example + self.example)
+        )
+
+        b = array.array(self.badtypecode())
+        self.assertRaises(TypeError, a.__add__, b)
+
+        self.assertRaises(TypeError, a.__iadd__, "bad")
+
+    def test_mul(self):
+        a = 5*array.array(self.typecode, self.example)
+        self.assertEqual(
+            a,
+            array.array(self.typecode, 5*self.example)
+        )
+
+        a = array.array(self.typecode, self.example)*5
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example*5)
+        )
+
+        a = 0*array.array(self.typecode, self.example)
+        self.assertEqual(
+            a,
+            array.array(self.typecode)
+        )
+
+        a = (-1)*array.array(self.typecode, self.example)
+        self.assertEqual(
+            a,
+            array.array(self.typecode)
+        )
+
+        self.assertRaises(TypeError, a.__mul__, "bad")
+
+    def test_imul(self):
+        a = array.array(self.typecode, self.example)
+        b = a
+
+        a *= 5
+        self.assertTrue(a is b)
+        self.assertEqual(
+            a,
+            array.array(self.typecode, 5*self.example)
+        )
+
+        a *= 0
+        self.assertTrue(a is b)
+        self.assertEqual(a, array.array(self.typecode))
+
+        a *= 1000
+        self.assertTrue(a is b)
+        self.assertEqual(a, array.array(self.typecode))
+
+        a *= -1
+        self.assertTrue(a is b)
+        self.assertEqual(a, array.array(self.typecode))
+
+        a = array.array(self.typecode, self.example)
+        a *= -1
+        self.assertEqual(a, array.array(self.typecode))
+
+        self.assertRaises(TypeError, a.__imul__, "bad")
+
+    def test_getitem(self):
+        a = array.array(self.typecode, self.example)
+        self.assertEntryEqual(a[0], self.example[0])
+        self.assertEntryEqual(a[0L], self.example[0])
+        self.assertEntryEqual(a[-1], self.example[-1])
+        self.assertEntryEqual(a[-1L], self.example[-1])
+        self.assertEntryEqual(a[len(self.example)-1], self.example[-1])
+        self.assertEntryEqual(a[-len(self.example)], self.example[0])
+        self.assertRaises(TypeError, a.__getitem__)
+        self.assertRaises(IndexError, a.__getitem__, len(self.example))
+        self.assertRaises(IndexError, a.__getitem__, -len(self.example)-1)
+
+    def test_setitem(self):
+        a = array.array(self.typecode, self.example)
+        a[0] = a[-1]
+        self.assertEntryEqual(a[0], a[-1])
+
+        a = array.array(self.typecode, self.example)
+        a[0L] = a[-1]
+        self.assertEntryEqual(a[0], a[-1])
+
+        a = array.array(self.typecode, self.example)
+        a[-1] = a[0]
+        self.assertEntryEqual(a[0], a[-1])
+
+        a = array.array(self.typecode, self.example)
+        a[-1L] = a[0]
+        self.assertEntryEqual(a[0], a[-1])
+
+        a = array.array(self.typecode, self.example)
+        a[len(self.example)-1] = a[0]
+        self.assertEntryEqual(a[0], a[-1])
+
+        a = array.array(self.typecode, self.example)
+        a[-len(self.example)] = a[-1]
+        self.assertEntryEqual(a[0], a[-1])
+
+        self.assertRaises(TypeError, a.__setitem__)
+        self.assertRaises(TypeError, a.__setitem__, None)
+        self.assertRaises(TypeError, a.__setitem__, 0, None)
+        self.assertRaises(
+            IndexError,
+            a.__setitem__,
+            len(self.example), self.example[0]
+        )
+        self.assertRaises(
+            IndexError,
+            a.__setitem__,
+            -len(self.example)-1, self.example[0]
+        )
+
+    def test_delitem(self):
+        a = array.array(self.typecode, self.example)
+        del a[0]
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[1:])
+        )
+
+        a = array.array(self.typecode, self.example)
+        del a[-1]
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[:-1])
+        )
+
+        a = array.array(self.typecode, self.example)
+        del a[len(self.example)-1]
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[:-1])
+        )
+
+        a = array.array(self.typecode, self.example)
+        del a[-len(self.example)]
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[1:])
+        )
+
+        self.assertRaises(TypeError, a.__delitem__)
+        self.assertRaises(TypeError, a.__delitem__, None)
+        self.assertRaises(IndexError, a.__delitem__, len(self.example))
+        self.assertRaises(IndexError, a.__delitem__, -len(self.example)-1)
+
+    def test_getslice(self):
+        a = array.array(self.typecode, self.example)
+        self.assertEqual(a[:], a)
+
+        self.assertEqual(
+            a[1:],
+            array.array(self.typecode, self.example[1:])
+        )
+
+        self.assertEqual(
+            a[:1],
+            array.array(self.typecode, self.example[:1])
+        )
+
+        self.assertEqual(
+            a[:-1],
+            array.array(self.typecode, self.example[:-1])
+        )
+
+        self.assertEqual(
+            a[-1:],
+            array.array(self.typecode, self.example[-1:])
+        )
+
+        self.assertEqual(
+            a[-1:-1],
+            array.array(self.typecode)
+        )
+
+        self.assertEqual(
+            a[2:1],
+            array.array(self.typecode)
+        )
+
+        self.assertEqual(
+            a[1000:],
+            array.array(self.typecode)
+        )
+        self.assertEqual(a[-1000:], a)
+        self.assertEqual(a[:1000], a)
+        self.assertEqual(
+            a[:-1000],
+            array.array(self.typecode)
+        )
+        self.assertEqual(a[-1000:1000], a)
+        self.assertEqual(
+            a[2000:1000],
+            array.array(self.typecode)
+        )
+
+    def test_extended_getslice(self):
+        # Test extended slicing by comparing with list slicing
+        # (Assumes list conversion works correctly, too)
+        a = array.array(self.typecode, self.example)
+        indices = (0, None, 1, 3, 19, 100, -1, -2, -31, -100)
+        for start in indices:
+            for stop in indices:
+                # Everything except the initial 0 (invalid step)
+                for step in indices[1:]:
+                    self.assertEqual(list(a[start:stop:step]),
+                                     list(a)[start:stop:step])
+
+    def test_setslice(self):
+        a = array.array(self.typecode, self.example)
+        a[:1] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example + self.example[1:])
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[:-1] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example + self.example[-1:])
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[-1:] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[:-1] + self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[1:] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[:1] + self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[1:-1] = a
+        self.assertEqual(
+            a,
+            array.array(
+                self.typecode,
+                self.example[:1] + self.example + self.example[-1:]
+            )
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[1000:] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, 2*self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[-1000:] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[:1000] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[:-1000] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, 2*self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[1:0] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[:1] + self.example + self.example[1:])
+        )
+
+        a = array.array(self.typecode, self.example)
+        a[2000:1000] = a
+        self.assertEqual(
+            a,
+            array.array(self.typecode, 2*self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(TypeError, a.__setslice__, 0, 0, None)
+        self.assertRaises(TypeError, a.__setitem__, slice(0, 0), None)
+        self.assertRaises(TypeError, a.__setitem__, slice(0, 1), None)
+
+        b = array.array(self.badtypecode())
+        self.assertRaises(TypeError, a.__setslice__, 0, 0, b)
+        self.assertRaises(TypeError, a.__setitem__, slice(0, 0), b)
+        self.assertRaises(TypeError, a.__setitem__, slice(0, 1), b)
+
+    def test_extended_set_del_slice(self):
+        indices = (0, None, 1, 3, 19, 100, -1, -2, -31, -100)
+        for start in indices:
+            for stop in indices:
+                # Everything except the initial 0 (invalid step)
+                for step in indices[1:]:
+                    a = array.array(self.typecode, self.example)
+                    L = list(a)
+                    # Make sure we have a slice of exactly the right length,
+                    # but with (hopefully) different data.
+                    data = L[start:stop:step]
+                    data.reverse()
+                    L[start:stop:step] = data
+                    a[start:stop:step] = array.array(self.typecode, data)
+                    self.assertEquals(a, array.array(self.typecode, L))
+
+                    del L[start:stop:step]
+                    del a[start:stop:step]
+                    self.assertEquals(a, array.array(self.typecode, L))
+
+    def test_index(self):
+        example = 2*self.example
+        a = array.array(self.typecode, example)
+        self.assertRaises(TypeError, a.index)
+        for x in example:
+            self.assertEqual(a.index(x), example.index(x))
+        self.assertRaises(ValueError, a.index, None)
+        self.assertRaises(ValueError, a.index, self.outside)
+
+    def test_count(self):
+        example = 2*self.example
+        a = array.array(self.typecode, example)
+        self.assertRaises(TypeError, a.count)
+        for x in example:
+            self.assertEqual(a.count(x), example.count(x))
+        self.assertEqual(a.count(self.outside), 0)
+        self.assertEqual(a.count(None), 0)
+
+    def test_remove(self):
+        for x in self.example:
+            example = 2*self.example
+            a = array.array(self.typecode, example)
+            pos = example.index(x)
+            example2 = example[:pos] + example[pos+1:]
+            a.remove(x)
+            self.assertEqual(a, array.array(self.typecode, example2))
+
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(ValueError, a.remove, self.outside)
+
+        self.assertRaises(ValueError, a.remove, None)
+
+    def test_pop(self):
+        a = array.array(self.typecode)
+        self.assertRaises(IndexError, a.pop)
+
+        a = array.array(self.typecode, 2*self.example)
+        self.assertRaises(TypeError, a.pop, 42, 42)
+        self.assertRaises(TypeError, a.pop, None)
+        self.assertRaises(IndexError, a.pop, len(a))
+        self.assertRaises(IndexError, a.pop, -len(a)-1)
+
+        self.assertEntryEqual(a.pop(0), self.example[0])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[1:]+self.example)
+        )
+        self.assertEntryEqual(a.pop(1), self.example[2])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[1:2]+self.example[3:]+self.example)
+        )
+        self.assertEntryEqual(a.pop(0), self.example[1])
+        self.assertEntryEqual(a.pop(), self.example[-1])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[3:]+self.example[:-1])
+        )
+
+    def test_reverse(self):
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(TypeError, a.reverse, 42)
+        a.reverse()
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[::-1])
+        )
+
+    def test_extend(self):
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(TypeError, a.extend)
+        a.extend(array.array(self.typecode, self.example[::-1]))
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example+self.example[::-1])
+        )
+
+        a = array.array(self.typecode, self.example)
+        a.extend(a)
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example+self.example)
+        )
+
+        b = array.array(self.badtypecode())
+        self.assertRaises(TypeError, a.extend, b)
+
+        a = array.array(self.typecode, self.example)
+        a.extend(self.example[::-1])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example+self.example[::-1])
+        )
+
+    def test_constructor_with_iterable_argument(self):
+        a = array.array(self.typecode, iter(self.example))
+        b = array.array(self.typecode, self.example)
+        self.assertEqual(a, b)
+
+        # non-iterable argument
+        self.assertRaises(TypeError, array.array, self.typecode, 10)
+
+        # pass through errors raised in __iter__
+        class A:
+            def __iter__(self):
+                raise UnicodeError
+        self.assertRaises(UnicodeError, array.array, self.typecode, A())
+
+        # pass through errors raised in next()
+        def B():
+            raise UnicodeError
+            yield None
+        self.assertRaises(UnicodeError, array.array, self.typecode, B())
+
+    def test_coveritertraverse(self):
+        try:
+            import gc
+        except ImportError:
+            return
+        a = array.array(self.typecode)
+        l = [iter(a)]
+        l.append(l)
+        gc.collect()
+
+    def test_buffer(self):
+        a = array.array(self.typecode, self.example)
+        with test_support.check_py3k_warnings():
+            b = buffer(a)
+        self.assertEqual(b[0], a.tostring()[0])
+
+    def test_weakref(self):
+        s = array.array(self.typecode, self.example)
+        p = proxy(s)
+        self.assertEqual(p.tostring(), s.tostring())
+        s = None
+        self.assertRaises(ReferenceError, len, p)
+
+    def test_bug_782369(self):
+        import sys
+        if hasattr(sys, "getrefcount"):
+            for i in range(10):
+                b = array.array('B', range(64))
+            rc = sys.getrefcount(10)
+            for i in range(10):
+                b = array.array('B', range(64))
+            self.assertEqual(rc, sys.getrefcount(10))
+
+    def test_subclass_with_kwargs(self):
+        # SF bug #1486663 -- this used to erroneously raise a TypeError
+        ArraySubclassWithKwargs('b', newarg=1)
+
+
+class StringTest(BaseTest):
+
+    def test_setitem(self):
+        super(StringTest, self).test_setitem()
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(TypeError, a.__setitem__, 0, self.example[:2])
+
+class CharacterTest(StringTest):
+    typecode = 'c'
+    example = '\x01azAZ\x00\xfe'
+    smallerexample = '\x01azAY\x00\xfe'
+    biggerexample = '\x01azAZ\x00\xff'
+    outside = '\x33'
+    minitemsize = 1
+
+    def test_subbclassing(self):
+        class EditableString(array.array):
+            def __new__(cls, s, *args, **kwargs):
+                return array.array.__new__(cls, 'c', s)
+
+            def __init__(self, s, color='blue'):
+                self.color = color
+
+            def strip(self):
+                self[:] = array.array('c', self.tostring().strip())
+
+            def __repr__(self):
+                return 'EditableString(%r)' % self.tostring()
+
+        s = EditableString("\ttest\r\n")
+        s.strip()
+        self.assertEqual(s.tostring(), "test")
+
+        self.assertEqual(s.color, "blue")
+        s.color = "red"
+        self.assertEqual(s.color, "red")
+        self.assertEqual(s.__dict__.keys(), ["color"])
+
+    def test_nounicode(self):
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(ValueError, a.fromunicode, unicode(''))
+        self.assertRaises(ValueError, a.tounicode)
+
+tests.append(CharacterTest)
+
+if test_support.have_unicode:
+    class UnicodeTest(StringTest):
+        typecode = 'u'
+        example = unicode(r'\x01\u263a\x00\ufeff', 'unicode-escape')
+        smallerexample = unicode(r'\x01\u263a\x00\ufefe', 'unicode-escape')
+        biggerexample = unicode(r'\x01\u263a\x01\ufeff', 'unicode-escape')
+        outside = unicode('\x33')
+        minitemsize = 2
+
+        def test_unicode(self):
+            self.assertRaises(TypeError, array.array, 'b', unicode('foo', 'ascii'))
+
+            a = array.array('u', unicode(r'\xa0\xc2\u1234', 'unicode-escape'))
+            a.fromunicode(unicode(' ', 'ascii'))
+            a.fromunicode(unicode('', 'ascii'))
+            a.fromunicode(unicode('', 'ascii'))
+            a.fromunicode(unicode(r'\x11abc\xff\u1234', 'unicode-escape'))
+            s = a.tounicode()
+            self.assertEqual(
+                s,
+                unicode(r'\xa0\xc2\u1234 \x11abc\xff\u1234', 'unicode-escape')
+            )
+
+            s = unicode(r'\x00="\'a\\b\x80\xff\u0000\u0001\u1234', 'unicode-escape')
+            a = array.array('u', s)
+            self.assertEqual(
+                repr(a),
+                r"""array('u', u'\x00="\'a\\b\x80\xff\x00\x01\u1234')"""
+            )
+
+            self.assertRaises(TypeError, a.fromunicode)
+
+    tests.append(UnicodeTest)
+
+class NumberTest(BaseTest):
+
+    def test_extslice(self):
+        a = array.array(self.typecode, range(5))
+        self.assertEqual(a[::], a)
+        self.assertEqual(a[::2], array.array(self.typecode, [0,2,4]))
+        self.assertEqual(a[1::2], array.array(self.typecode, [1,3]))
+        self.assertEqual(a[::-1], array.array(self.typecode, [4,3,2,1,0]))
+        self.assertEqual(a[::-2], array.array(self.typecode, [4,2,0]))
+        self.assertEqual(a[3::-2], array.array(self.typecode, [3,1]))
+        self.assertEqual(a[-100:100:], a)
+        self.assertEqual(a[100:-100:-1], a[::-1])
+        self.assertEqual(a[-100L:100L:2L], array.array(self.typecode, [0,2,4]))
+        self.assertEqual(a[1000:2000:2], array.array(self.typecode, []))
+        self.assertEqual(a[-1000:-2000:-2], array.array(self.typecode, []))
+
+    def test_delslice(self):
+        a = array.array(self.typecode, range(5))
+        del a[::2]
+        self.assertEqual(a, array.array(self.typecode, [1,3]))
+        a = array.array(self.typecode, range(5))
+        del a[1::2]
+        self.assertEqual(a, array.array(self.typecode, [0,2,4]))
+        a = array.array(self.typecode, range(5))
+        del a[1::-2]
+        self.assertEqual(a, array.array(self.typecode, [0,2,3,4]))
+        a = array.array(self.typecode, range(10))
+        del a[::1000]
+        self.assertEqual(a, array.array(self.typecode, [1,2,3,4,5,6,7,8,9]))
+        # test issue7788
+        a = array.array(self.typecode, range(10))
+        del a[9::1<<333]
+
+    def test_assignment(self):
+        a = array.array(self.typecode, range(10))
+        a[::2] = array.array(self.typecode, [42]*5)
+        self.assertEqual(a, array.array(self.typecode, [42, 1, 42, 3, 42, 5, 42, 7, 42, 9]))
+        a = array.array(self.typecode, range(10))
+        a[::-4] = array.array(self.typecode, [10]*3)
+        self.assertEqual(a, array.array(self.typecode, [0, 10, 2, 3, 4, 10, 6, 7, 8 ,10]))
+        a = array.array(self.typecode, range(4))
+        a[::-1] = a
+        self.assertEqual(a, array.array(self.typecode, [3, 2, 1, 0]))
+        a = array.array(self.typecode, range(10))
+        b = a[:]
+        c = a[:]
+        ins = array.array(self.typecode, range(2))
+        a[2:3] = ins
+        b[slice(2,3)] = ins
+        c[2:3:] = ins
+
+    def test_iterationcontains(self):
+        a = array.array(self.typecode, range(10))
+        self.assertEqual(list(a), range(10))
+        b = array.array(self.typecode, [20])
+        self.assertEqual(a[-1] in a, True)
+        self.assertEqual(b[0] not in a, True)
+
+    def check_overflow(self, lower, upper):
+        # method to be used by subclasses
+
+        # should not overflow assigning lower limit
+        a = array.array(self.typecode, [lower])
+        a[0] = lower
+        # should overflow assigning less than lower limit
+        self.assertRaises(OverflowError, array.array, self.typecode, [lower-1])
+        self.assertRaises(OverflowError, a.__setitem__, 0, lower-1)
+        # should not overflow assigning upper limit
+        a = array.array(self.typecode, [upper])
+        a[0] = upper
+        # should overflow assigning more than upper limit
+        self.assertRaises(OverflowError, array.array, self.typecode, [upper+1])
+        self.assertRaises(OverflowError, a.__setitem__, 0, upper+1)
+
+    def test_subclassing(self):
+        typecode = self.typecode
+        class ExaggeratingArray(array.array):
+            __slots__ = ['offset']
+
+            def __new__(cls, typecode, data, offset):
+                return array.array.__new__(cls, typecode, data)
+
+            def __init__(self, typecode, data, offset):
+                self.offset = offset
+
+            def __getitem__(self, i):
+                return array.array.__getitem__(self, i) + self.offset
+
+        a = ExaggeratingArray(self.typecode, [3, 6, 7, 11], 4)
+        self.assertEntryEqual(a[0], 7)
+
+        self.assertRaises(AttributeError, setattr, a, "color", "blue")
+
+class SignedNumberTest(NumberTest):
+    example = [-1, 0, 1, 42, 0x7f]
+    smallerexample = [-1, 0, 1, 42, 0x7e]
+    biggerexample = [-1, 0, 1, 43, 0x7f]
+    outside = 23
+
+    def test_overflow(self):
+        a = array.array(self.typecode)
+        lower = -1 * long(pow(2, a.itemsize * 8 - 1))
+        upper = long(pow(2, a.itemsize * 8 - 1)) - 1L
+        self.check_overflow(lower, upper)
+
+class UnsignedNumberTest(NumberTest):
+    example = [0, 1, 17, 23, 42, 0xff]
+    smallerexample = [0, 1, 17, 23, 42, 0xfe]
+    biggerexample = [0, 1, 17, 23, 43, 0xff]
+    outside = 0xaa
+
+    def test_overflow(self):
+        a = array.array(self.typecode)
+        lower = 0
+        upper = long(pow(2, a.itemsize * 8)) - 1L
+        self.check_overflow(lower, upper)
+
+
+class ByteTest(SignedNumberTest):
+    typecode = 'b'
+    minitemsize = 1
+tests.append(ByteTest)
+
+class UnsignedByteTest(UnsignedNumberTest):
+    typecode = 'B'
+    minitemsize = 1
+tests.append(UnsignedByteTest)
+
+class ShortTest(SignedNumberTest):
+    typecode = 'h'
+    minitemsize = 2
+tests.append(ShortTest)
+
+class UnsignedShortTest(UnsignedNumberTest):
+    typecode = 'H'
+    minitemsize = 2
+tests.append(UnsignedShortTest)
+
+class IntTest(SignedNumberTest):
+    typecode = 'i'
+    minitemsize = 2
+tests.append(IntTest)
+
+class UnsignedIntTest(UnsignedNumberTest):
+    typecode = 'I'
+    minitemsize = 2
+tests.append(UnsignedIntTest)
+
+class LongTest(SignedNumberTest):
+    typecode = 'l'
+    minitemsize = 4
+tests.append(LongTest)
+
+class UnsignedLongTest(UnsignedNumberTest):
+    typecode = 'L'
+    minitemsize = 4
+tests.append(UnsignedLongTest)
+
+class FPTest(NumberTest):
+    example = [-42.0, 0, 42, 1e5, -1e10]
+    smallerexample = [-42.0, 0, 42, 1e5, -2e10]
+    biggerexample = [-42.0, 0, 42, 1e5, 1e10]
+    outside = 23
+
+    def assertEntryEqual(self, entry1, entry2):
+        self.assertAlmostEqual(entry1, entry2)
+
+    def test_byteswap(self):
+        a = array.array(self.typecode, self.example)
+        self.assertRaises(TypeError, a.byteswap, 42)
+        if a.itemsize in (1, 2, 4, 8):
+            b = array.array(self.typecode, self.example)
+            b.byteswap()
+            if a.itemsize==1:
+                self.assertEqual(a, b)
+            else:
+                # On alphas treating the byte swapped bit patters as
+                # floats/doubles results in floating point exceptions
+                # => compare the 8bit string values instead
+                self.assertNotEqual(a.tostring(), b.tostring())
+            b.byteswap()
+            self.assertEqual(a, b)
+
+class FloatTest(FPTest):
+    typecode = 'f'
+    minitemsize = 4
+tests.append(FloatTest)
+
+class DoubleTest(FPTest):
+    typecode = 'd'
+    minitemsize = 8
+
+    def test_alloc_overflow(self):
+        from sys import maxsize
+        a = array.array('d', [-1]*65536)
+        try:
+            a *= maxsize//65536 + 1
+        except MemoryError:
+            pass
+        else:
+            self.fail("Array of size > maxsize created - MemoryError expected")
+        b = array.array('d', [ 2.71828183, 3.14159265, -1])
+        try:
+            b * (maxsize//3 + 1)
+        except MemoryError:
+            pass
+        else:
+            self.fail("Array of size > maxsize created - MemoryError expected")
+
+tests.append(DoubleTest)
+
+def test_main(verbose=None):
+    import sys
+
+    test_support.run_unittest(*tests)
+
+    # verify reference counting
+    if verbose and hasattr(sys, "gettotalrefcount"):
+        import gc
+        counts = [None] * 5
+        for i in xrange(len(counts)):
+            test_support.run_unittest(*tests)
+            gc.collect()
+            counts[i] = sys.gettotalrefcount()
+        print counts
+
+if __name__ == "__main__":
+    test_main(verbose=True)


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