Port test_array and test_winsound to PyUnit. Enhance tests for array

(code coverage for Modules/arraymodule.c is at 91%)

From SF patch #736962.

1 files changed, 821 insertions, 363 deletions

diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index 6aa3cf0..68f2787 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -2,380 +2,838 @@
 """Test the arraymodule.
    Roger E. Masse
 """
-import array
-from test.test_support import verbose, TESTFN, unlink, TestFailed,\
-     have_unicode, vereq
-
-def main():
-    testtype('c', 'c')
-    if have_unicode:
-        testtype('u', unicode(r'\u263a', 'unicode-escape'))
-    for type in (['b', 'h', 'i', 'l', 'f', 'd']):
-        testtype(type, 1)
-    if have_unicode:
-        testunicode()
-    testsubclassing()
-    unlink(TESTFN)
-
-def testunicode():
-    try:
-        array.array('b', unicode('foo', 'ascii'))
-    except TypeError:
-        pass
-    else:
-        raise TestFailed("creating a non-unicode array from "
-                         "a Unicode string should fail")
-
-    x = array.array('u', unicode(r'\xa0\xc2\u1234', 'unicode-escape'))
-    x.fromunicode(unicode(' ', 'ascii'))
-    x.fromunicode(unicode('', 'ascii'))
-    x.fromunicode(unicode('', 'ascii'))
-    x.fromunicode(unicode(r'\x11abc\xff\u1234', 'unicode-escape'))
-    s = x.tounicode()
-    if s != unicode(r'\xa0\xc2\u1234 \x11abc\xff\u1234', 'unicode-escape'):
-        raise TestFailed("fromunicode()/tounicode()")
-
-    s = unicode(r'\x00="\'a\\b\x80\xff\u0000\u0001\u1234', 'unicode-escape')
-    a = array.array('u', s)
-    if verbose:
-        print "repr of type 'u' array:", repr(a)
-        print "              expected: array('u', %r)" % s
-
-def testsubclassing():
-    class EditableString(array.array):
-        def __new__(cls, s, *args, **kwargs):
-            return array.array.__new__(cls, 'c', s)
-
-        def __init__(self, s, color='blue'):
-            array.array.__init__(self, 'c', s)
-            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()
-    if s.tostring() != 'test':
-        raise TestFailed, "subclassing array.array failed somewhere"
-    if s.color != 'blue':
-        raise TestFailed, "assigning attributes to instance of array subclass"
-    s.color = 'red'
-    if s.color != 'red':
-        raise TestFailed, "assigning attributes to instance of array subclass"
-    if s.__dict__.keys() != ['color']:
-        raise TestFailed, "array subclass __dict__"
-
-    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('i', [3, 6, 7, 11], 4)
-    if a[0] != 7:
-        raise TestFailed, "array subclass overriding __getitem__"
-    try:
-        a.color = 'blue'
-    except AttributeError:
-        pass
-    else:
-        raise TestFailed, "array subclass __slots__ was ignored"
-
-
-def testoverflow(type, lowerLimit, upperLimit):
-        # should not overflow assigning lower limit
-    if verbose:
-        print "overflow test: array(%s, [%s])" % (`type`, `lowerLimit`)
-    try:
-        a = array.array(type, [lowerLimit])
-    except:
-        raise TestFailed, "array(%s) overflowed assigning %s" %\
-                (`type`, `lowerLimit`)
-    # should overflow assigning less than lower limit
-    if verbose:
-        print "overflow test: array(%s, [%s])" % (`type`, `lowerLimit-1`)
-    try:
-        a = array.array(type, [lowerLimit-1])
-        raise TestFailed, "array(%s) did not overflow assigning %s" %\
-                (`type`, `lowerLimit-1`)
-    except OverflowError:
-        pass
-    # should not overflow assigning upper limit
-    if verbose:
-        print "overflow test: array(%s, [%s])" % (`type`, `upperLimit`)
-    try:
-        a = array.array(type, [upperLimit])
-    except:
-        raise TestFailed, "array(%s) overflowed assigning %s" %\
-                (`type`, `upperLimit`)
-    # should overflow assigning more than upper limit
-    if verbose:
-        print "overflow test: array(%s, [%s])" % (`type`, `upperLimit+1`)
-    try:
-        a = array.array(type, [upperLimit+1])
-        raise TestFailed, "array(%s) did not overflow assigning %s" %\
-                (`type`, `upperLimit+1`)
-    except OverflowError:
-        pass
-
-
-
-def testtype(type, example):
-    a = array.array(type)
-    a.append(example)
-    if verbose:
-        print 40*'*'
-        print 'array after append: ', a
-    a.typecode
-    a.itemsize
-    if a.typecode in ('i', 'b', 'h', 'l'):
-        a.byteswap()
-
-    if a.typecode == 'c':
-        f = open(TESTFN, "w")
-        f.write("The quick brown fox jumps over the lazy dog.\n")
-        f.close()
-        f = open(TESTFN, 'r')
-        a.fromfile(f, 10)
-        f.close()
-        if verbose:
-            print 'char array with 10 bytes of TESTFN appended: ', a
-        a.fromlist(['a', 'b', 'c'])
-        if verbose:
-            print 'char array with list appended: ', a
-
-    a.insert(0, example)
-    if verbose:
-        print 'array of %s after inserting another:' % a.typecode, a
-    f = open(TESTFN, 'w')
-    a.tofile(f)
-    f.close()
-
-    # This block is just to verify that the operations don't blow up.
-    a.tolist()
-    a.tostring()
-    repr(a)
-    str(a)
-
-    if verbose:
-        print 'array of %s converted to a list: ' % a.typecode, a.tolist()
-    if verbose:
-        print 'array of %s converted to a string: ' \
-               % a.typecode, `a.tostring()`
-
-    # Try out inplace addition and multiplication
-    a = array.array(type, [example])
-    b = a
-    a += array.array(type, [example]*2)
-    if a is not b:
-        raise TestFailed, "array(%s) inplace addition" % `type`
-    if a != array.array(type, [example] * 3):
-        raise TestFailed, "array(%s) inplace addition" % `type`
-
-    a *= 5
-    if a is not b:
-        raise TestFailed, "array(%s) inplace multiplication" % `type`
-    if a != array.array(type, [example] * 15):
-        raise TestFailed, "array(%s) inplace multiplication" % `type`
-
-    a *= 0
-    if a is not b:
-        raise TestFailed, "array(%s) inplace multiplication by 0" % `type`
-    if a != array.array(type, []):
-        raise TestFailed, "array(%s) inplace multiplication by 0" % `type`
-
-    a *= 1000
-    if a is not b:
-        raise TestFailed, "empty array(%s) inplace multiplication" % `type`
-    if a != array.array(type, []):
-        raise TestFailed, "empty array(%s) inplace multiplication" % `type`
-
-    if type == 'c':
-        a = array.array(type, "abcde")
-        a[:-1] = a
-        if a != array.array(type, "abcdee"):
-            raise TestFailed, "array(%s) self-slice-assign (head)" % `type`
-        a = array.array(type, "abcde")
-        a[1:] = a
-        if a != array.array(type, "aabcde"):
-            raise TestFailed, "array(%s) self-slice-assign (tail)" % `type`
-        a = array.array(type, "abcde")
-        a[1:-1] = a
-        if a != array.array(type, "aabcdee"):
-            raise TestFailed, "array(%s) self-slice-assign (cntr)" % `type`
-        if a.index("e") != 5:
-            raise TestFailed, "array(%s) index-test" % `type`
-        if a.count("a") != 2:
-            raise TestFailed, "array(%s) count-test" % `type`
-        a.remove("e")
-        if a != array.array(type, "aabcde"):
-            raise TestFailed, "array(%s) remove-test" % `type`
-        if a.pop(0) != "a":
-            raise TestFailed, "array(%s) pop-test" % `type`
-        if a.pop(1) != "b":
-            raise TestFailed, "array(%s) pop-test" % `type`
-        a.extend(array.array(type, "xyz"))
-        if a != array.array(type, "acdexyz"):
-            raise TestFailed, "array(%s) extend-test" % `type`
-        a.pop()
-        a.pop()
-        a.pop()
-        x = a.pop()
-        if x != 'e':
-            raise TestFailed, "array(%s) pop-test" % `type`
-        if a != array.array(type, "acd"):
-            raise TestFailed, "array(%s) pop-test" % `type`
-        a.reverse()
-        if a != array.array(type, "dca"):
-            raise TestFailed, "array(%s) reverse-test" % `type`
-    elif type == 'u':
-        a = array.array(type, unicode("abcde", 'ascii'))
-        a[:-1] = a
-        if a != array.array(type, unicode("abcdee", 'ascii')):
-            raise TestFailed, "array(%s) self-slice-assign (head)" % `type`
-        a = array.array(type, unicode("abcde", 'ascii'))
-        a[1:] = a
-        if a != array.array(type, unicode("aabcde", 'ascii')):
-            raise TestFailed, "array(%s) self-slice-assign (tail)" % `type`
-        a = array.array(type, unicode("abcde", 'ascii'))
-        a[1:-1] = a
-        if a != array.array(type, unicode("aabcdee", 'ascii')):
-            raise TestFailed, "array(%s) self-slice-assign (cntr)" % `type`
-        if a.index(unicode("e", 'ascii')) != 5:
-            raise TestFailed, "array(%s) index-test" % `type`
-        if a.count(unicode("a", 'ascii')) != 2:
-            raise TestFailed, "array(%s) count-test" % `type`
-        a.remove(unicode("e", 'ascii'))
-        if a != array.array(type, unicode("aabcde", 'ascii')):
-            raise TestFailed, "array(%s) remove-test" % `type`
-        if a.pop(0) != unicode("a", 'ascii'):
-            raise TestFailed, "array(%s) pop-test" % `type`
-        if a.pop(1) != unicode("b", 'ascii'):
-            raise TestFailed, "array(%s) pop-test" % `type`
-        a.extend(array.array(type, unicode("xyz", 'ascii')))
-        if a != array.array(type, unicode("acdexyz", 'ascii')):
-            raise TestFailed, "array(%s) extend-test" % `type`
-        a.pop()
-        a.pop()
-        a.pop()
-        x = a.pop()
-        if x != unicode('e', 'ascii'):
-            raise TestFailed, "array(%s) pop-test" % `type`
-        if a != array.array(type, unicode("acd", 'ascii')):
-            raise TestFailed, "array(%s) pop-test" % `type`
-        a.reverse()
-        if a != array.array(type, unicode("dca", 'ascii')):
-            raise TestFailed, "array(%s) reverse-test" % `type`
-    else:
-        a = array.array(type, [1, 2, 3, 4, 5])
+
+import unittest
+from test import test_support
+import array, cStringIO, math
+
+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.assert_(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.assert_(isinstance(bi, tuple))
+        self.assertEqual(len(bi), 2)
+        self.assert_(isinstance(bi[0], int))
+        self.assert_(isinstance(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_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)
+
+    def test_tofromfile(self):
+        a = array.array(self.typecode, 2*self.example)
+        self.assertRaises(TypeError, a.tofile)
+        self.assertRaises(TypeError, a.tofile, cStringIO.StringIO())
+        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_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.assert_((a == 42) is False)
+        self.assert_((a != 42) is True)
+
+        self.assert_((a == a) is True)
+        self.assert_((a != a) is False)
+        self.assert_((a < a) is False)
+        self.assert_((a <= a) is True)
+        self.assert_((a > a) is False)
+        self.assert_((a >= a) is True)
+
+        as = array.array(self.typecode, self.smallerexample)
+        ab = array.array(self.typecode, self.biggerexample)
+
+        self.assert_((a == 2*a) is False)
+        self.assert_((a != 2*a) is True)
+        self.assert_((a < 2*a) is True)
+        self.assert_((a <= 2*a) is True)
+        self.assert_((a > 2*a) is False)
+        self.assert_((a >= 2*a) is False)
+
+        self.assert_((a == as) is False)
+        self.assert_((a != as) is True)
+        self.assert_((a < as) is False)
+        self.assert_((a <= as) is False)
+        self.assert_((a > as) is True)
+        self.assert_((a >= as) is True)
+
+        self.assert_((a == ab) is False)
+        self.assert_((a != ab) is True)
+        self.assert_((a < ab) is True)
+        self.assert_((a <= ab) is True)
+        self.assert_((a > ab) is False)
+        self.assert_((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.assert_(a is b)
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[::-1]+2*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.assert_(a is b)
+        self.assertEqual(
+            a,
+            array.array(self.typecode, 5*self.example)
+        )
+
+        a *= 0
+        self.assert_(a is b)
+        self.assertEqual(a, array.array(self.typecode))
+
+        a *= 1000
+        self.assert_(a is b)
+        self.assertEqual(a, array.array(self.typecode))
+
+        a *= -1
+        self.assert_(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[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_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
-        if a != array.array(type, [1, 2, 3, 4, 5, 5]):
-            raise TestFailed, "array(%s) self-slice-assign (head)" % `type`
-        a = array.array(type, [1, 2, 3, 4, 5])
+        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
-        if a != array.array(type, [1, 1, 2, 3, 4, 5]):
-            raise TestFailed, "array(%s) self-slice-assign (tail)" % `type`
-        a = array.array(type, [1, 2, 3, 4, 5])
+        self.assertEqual(
+            a,
+            array.array(self.typecode, self.example[:1] + self.example)
+        )
+
+        a = array.array(self.typecode, self.example)
         a[1:-1] = a
-        if a != array.array(type, [1, 1, 2, 3, 4, 5, 5]):
-            raise TestFailed, "array(%s) self-slice-assign (cntr)" % `type`
-        if a.index(5) != 5:
-            raise TestFailed, "array(%s) index-test" % `type`
-        if a.count(1) != 2:
-            raise TestFailed, "array(%s) count-test" % `type`
-        a.remove(5)
-        if a != array.array(type, [1, 1, 2, 3, 4, 5]):
-            raise TestFailed, "array(%s) remove-test" % `type`
-        if a.pop(0) != 1:
-            raise TestFailed, "array(%s) pop-test" % `type`
-        if a.pop(1) != 2:
-            raise TestFailed, "array(%s) pop-test" % `type`
-        a.extend(array.array(type, [7, 8, 9]))
-        if a != array.array(type, [1, 3, 4, 5, 7, 8, 9]):
-            raise TestFailed, "array(%s) extend-test" % `type`
-        a.pop()
-        a.pop()
-        a.pop()
-        x = a.pop()
-        if x != 5:
-            raise TestFailed, "array(%s) pop-test" % `type`
-        if a != array.array(type, [1, 3, 4]):
-            raise TestFailed, "array(%s) pop-test" % `type`
+        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, 1), None)
+
+        b = array.array(self.badtypecode())
+        self.assertRaises(TypeError, a.__setslice__, 0, 0, b)
+        self.assertRaises(TypeError, a.__setitem__, slice(0, 1), b)
+
+    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()
-        if a != array.array(type, [4, 3, 1]):
-            raise TestFailed, "array(%s) reverse-test" % `type`
-        # extended slicing
-        # subscription
-        a = array.array(type, [0,1,2,3,4])
-        vereq(a[::], a)
-        vereq(a[::2], array.array(type, [0,2,4]))
-        vereq(a[1::2], array.array(type, [1,3]))
-        vereq(a[::-1], array.array(type, [4,3,2,1,0]))
-        vereq(a[::-2], array.array(type, [4,2,0]))
-        vereq(a[3::-2], array.array(type, [3,1]))
-        vereq(a[-100:100:], a)
-        vereq(a[100:-100:-1], a[::-1])
-        vereq(a[-100L:100L:2L], array.array(type, [0,2,4]))
-        vereq(a[1000:2000:2], array.array(type, []))
-        vereq(a[-1000:-2000:-2], array.array(type, []))
-        #  deletion
+        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])
+        )
+
+        b = array.array(self.badtypecode())
+        self.assertRaises(TypeError, a.extend, 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)
+        b = buffer(a)
+        self.assertEqual(b[0], a.tostring()[0])
+
+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'):
+                array.array.__init__(self, 'c', s)
+                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]
-        vereq(a, array.array(type, [1,3]))
-        a = array.array(type, range(5))
+        self.assertEqual(a, array.array(self.typecode, [1,3]))
+        a = array.array(self.typecode, range(5))
         del a[1::2]
-        vereq(a, array.array(type, [0,2,4]))
-        a = array.array(type, range(5))
+        self.assertEqual(a, array.array(self.typecode, [0,2,4]))
+        a = array.array(self.typecode, range(5))
         del a[1::-2]
-        vereq(a, array.array(type, [0,2,3,4]))
-        a = array.array(type, range(10))
+        self.assertEqual(a, array.array(self.typecode, [0,2,3,4]))
+        a = array.array(self.typecode, range(10))
         del a[::1000]
-        vereq(a, array.array(type, [1,2,3,4,5,6,7,8,9]))
-        #  assignment
-        a = array.array(type, range(10))
-        a[::2] = array.array(type, [-1]*5)
-        vereq(a, array.array(type, [-1, 1, -1, 3, -1, 5, -1, 7, -1, 9]))
-        a = array.array(type, range(10))
-        a[::-4] = array.array(type, [10]*3)
-        vereq(a, array.array(type, [0, 10, 2, 3, 4, 10, 6, 7, 8 ,10]))
-        a = array.array(type, range(4))
+        self.assertEqual(a, array.array(self.typecode, [1,2,3,4,5,6,7,8,9]))
+
+    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
-        vereq(a, array.array(type, [3, 2, 1, 0]))
-        a = array.array(type, range(10))
+        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(type, range(2))
+        ins = array.array(self.typecode, range(2))
         a[2:3] = ins
         b[slice(2,3)] = ins
         c[2:3:] = ins
-        # iteration and contains
-        a = array.array(type, range(10))
-        vereq(list(a), range(10))
-        b = array.array(type, [20])
-        vereq(a[-1] in a, True)
-        vereq(b[0] not in a, True)
-
-    # test that overflow exceptions are raised as expected for assignment
-    # to array of specific integral types
-    from math import pow
-    if type in ('b', 'h', 'i', 'l'):
-        # check signed and unsigned versions
-        a = array.array(type)
-        signedLowerLimit = -1 * long(pow(2, a.itemsize * 8 - 1))
-        signedUpperLimit = long(pow(2, a.itemsize * 8 - 1)) - 1L
-        unsignedLowerLimit = 0
-        unsignedUpperLimit = long(pow(2, a.itemsize * 8)) - 1L
-        testoverflow(type, signedLowerLimit, signedUpperLimit)
-        testoverflow(type.upper(), unsignedLowerLimit, unsignedUpperLimit)
-
-
-
-main()
+
+    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)
+
+class FloatTest(FPTest):
+    typecode = 'f'
+    minitemsize = 4
+tests.append(FloatTest)
+
+class DoubleTest(FPTest):
+    typecode = 'd'
+    minitemsize = 8
+tests.append(DoubleTest)
+
+def test_main():
+    test_support.run_unittest(*tests)
+
+if __name__=="__main__":
+    test_main()
+
+
+#main()