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"""Test the arraymodule. Roger E. Masse """ import unittest from test import support from test.support import _2G import weakref import pickle import operator import struct import sys import array from array import _array_reconstructor as array_reconstructor sizeof_wchar = array.array('u').itemsize class ArraySubclass(array.array): pass class ArraySubclassWithKwargs(array.array): def __init__(self, typecode, newarg=None): array.array.__init__(self) typecodes = 'ubBhHiIlLfdqQ' class MiscTest(unittest.TestCase): def test_bad_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') def test_empty(self): # Exercise code for handling zero-length arrays a = array.array('B') a[:] = a self.assertEqual(len(a), 0) self.assertEqual(len(a + a), 0) self.assertEqual(len(a * 3), 0) a += a self.assertEqual(len(a), 0) # Machine format codes. # # Search for "enum machine_format_code" in Modules/arraymodule.c to get the # authoritative values. UNKNOWN_FORMAT = -1 UNSIGNED_INT8 = 0 SIGNED_INT8 = 1 UNSIGNED_INT16_LE = 2 UNSIGNED_INT16_BE = 3 SIGNED_INT16_LE = 4 SIGNED_INT16_BE = 5 UNSIGNED_INT32_LE = 6 UNSIGNED_INT32_BE = 7 SIGNED_INT32_LE = 8 SIGNED_INT32_BE = 9 UNSIGNED_INT64_LE = 10 UNSIGNED_INT64_BE = 11 SIGNED_INT64_LE = 12 SIGNED_INT64_BE = 13 IEEE_754_FLOAT_LE = 14 IEEE_754_FLOAT_BE = 15 IEEE_754_DOUBLE_LE = 16 IEEE_754_DOUBLE_BE = 17 UTF16_LE = 18 UTF16_BE = 19 UTF32_LE = 20 UTF32_BE = 21 class ArrayReconstructorTest(unittest.TestCase): def test_error(self): self.assertRaises(TypeError, array_reconstructor, "", "b", 0, b"") self.assertRaises(TypeError, array_reconstructor, str, "b", 0, b"") self.assertRaises(TypeError, array_reconstructor, array.array, "b", '', b"") self.assertRaises(TypeError, array_reconstructor, array.array, "b", 0, "") self.assertRaises(ValueError, array_reconstructor, array.array, "?", 0, b"") self.assertRaises(ValueError, array_reconstructor, array.array, "b", UNKNOWN_FORMAT, b"") self.assertRaises(ValueError, array_reconstructor, array.array, "b", 22, b"") self.assertRaises(ValueError, array_reconstructor, array.array, "d", 16, b"a") def test_numbers(self): testcases = ( (['B', 'H', 'I', 'L'], UNSIGNED_INT8, '=BBBB', [0x80, 0x7f, 0, 0xff]), (['b', 'h', 'i', 'l'], SIGNED_INT8, '=bbb', [-0x80, 0x7f, 0]), (['H', 'I', 'L'], UNSIGNED_INT16_LE, '<HHHH', [0x8000, 0x7fff, 0, 0xffff]), (['H', 'I', 'L'], UNSIGNED_INT16_BE, '>HHHH', [0x8000, 0x7fff, 0, 0xffff]), (['h', 'i', 'l'], SIGNED_INT16_LE, '<hhh', [-0x8000, 0x7fff, 0]), (['h', 'i', 'l'], SIGNED_INT16_BE, '>hhh', [-0x8000, 0x7fff, 0]), (['I', 'L'], UNSIGNED_INT32_LE, '<IIII', [1<<31, (1<<31)-1, 0, (1<<32)-1]), (['I', 'L'], UNSIGNED_INT32_BE, '>IIII', [1<<31, (1<<31)-1, 0, (1<<32)-1]), (['i', 'l'], SIGNED_INT32_LE, '<iii', [-1<<31, (1<<31)-1, 0]), (['i', 'l'], SIGNED_INT32_BE, '>iii', [-1<<31, (1<<31)-1, 0]), (['L'], UNSIGNED_INT64_LE, '<QQQQ', [1<<31, (1<<31)-1, 0, (1<<32)-1]), (['L'], UNSIGNED_INT64_BE, '>QQQQ', [1<<31, (1<<31)-1, 0, (1<<32)-1]), (['l'], SIGNED_INT64_LE, '<qqq', [-1<<31, (1<<31)-1, 0]), (['l'], SIGNED_INT64_BE, '>qqq', [-1<<31, (1<<31)-1, 0]), # The following tests for INT64 will raise an OverflowError # when run on a 32-bit machine. The tests are simply skipped # in that case. (['L'], UNSIGNED_INT64_LE, '<QQQQ', [1<<63, (1<<63)-1, 0, (1<<64)-1]), (['L'], UNSIGNED_INT64_BE, '>QQQQ', [1<<63, (1<<63)-1, 0, (1<<64)-1]), (['l'], SIGNED_INT64_LE, '<qqq', [-1<<63, (1<<63)-1, 0]), (['l'], SIGNED_INT64_BE, '>qqq', [-1<<63, (1<<63)-1, 0]), (['f'], IEEE_754_FLOAT_LE, '<ffff', [16711938.0, float('inf'), float('-inf'), -0.0]), (['f'], IEEE_754_FLOAT_BE, '>ffff', [16711938.0, float('inf'), float('-inf'), -0.0]), (['d'], IEEE_754_DOUBLE_LE, '<dddd', [9006104071832581.0, float('inf'), float('-inf'), -0.0]), (['d'], IEEE_754_DOUBLE_BE, '>dddd', [9006104071832581.0, float('inf'), float('-inf'), -0.0]) ) for testcase in testcases: valid_typecodes, mformat_code, struct_fmt, values = testcase arraystr = struct.pack(struct_fmt, *values) for typecode in valid_typecodes: try: a = array.array(typecode, values) except OverflowError: continue # Skip this test case. b = array_reconstructor( array.array, typecode, mformat_code, arraystr) self.assertEqual(a, b, msg="{0!r} != {1!r}; testcase={2!r}".format(a, b, testcase)) def test_unicode(self): teststr = "Bonne Journ\xe9e \U0002030a\U00020347" testcases = ( (UTF16_LE, "UTF-16-LE"), (UTF16_BE, "UTF-16-BE"), (UTF32_LE, "UTF-32-LE"), (UTF32_BE, "UTF-32-BE") ) for testcase in testcases: mformat_code, encoding = testcase a = array.array('u', teststr) b = array_reconstructor( array.array, 'u', mformat_code, teststr.encode(encoding)) self.assertEqual(a, b, msg="{0!r} != {1!r}; testcase={2!r}".format(a, b, testcase)) class BaseTest: # 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.assertGreaterEqual(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) self.assertIsInstance(bi[1], int) self.assertEqual(bi[1], len(a)) def test_byteswap(self): if self.typecode == 'u': example = '\U00100100' else: example = self.example a = array.array(self.typecode, example) self.assertRaises(TypeError, a.byteswap, 42) if a.itemsize in (1, 2, 4, 8): b = array.array(self.typecode, 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_reduce_ex(self): a = array.array(self.typecode, self.example) for protocol in range(3): self.assertIs(a.__reduce_ex__(protocol)[0], array.array) for protocol in range(3, pickle.HIGHEST_PROTOCOL + 1): self.assertIs(a.__reduce_ex__(protocol)[0], array_reconstructor) def test_pickle(self): for protocol in range(pickle.HIGHEST_PROTOCOL + 1): a = array.array(self.typecode, self.example) b = pickle.loads(pickle.dumps(a, protocol)) self.assertNotEqual(id(a), id(b)) self.assertEqual(a, b) a = ArraySubclass(self.typecode, self.example) a.x = 10 b = pickle.loads(pickle.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(pickle.HIGHEST_PROTOCOL + 1): a = array.array(self.typecode) b = pickle.loads(pickle.dumps(a, protocol)) self.assertNotEqual(id(a), id(b)) self.assertEqual(a, b) a = ArraySubclass(self.typecode) a.x = 10 b = pickle.loads(pickle.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_iterator_pickle(self): orig = array.array(self.typecode, self.example) data = list(orig) data2 = data[::-1] for proto in range(pickle.HIGHEST_PROTOCOL + 1): # initial iterator itorig = iter(orig) d = pickle.dumps((itorig, orig), proto) it, a = pickle.loads(d) a.fromlist(data2) self.assertEqual(type(it), type(itorig)) self.assertEqual(list(it), data + data2) # running iterator next(itorig) d = pickle.dumps((itorig, orig), proto) it, a = pickle.loads(d) a.fromlist(data2) self.assertEqual(type(it), type(itorig)) self.assertEqual(list(it), data[1:] + data2) # empty iterator for i in range(1, len(data)): next(itorig) d = pickle.dumps((itorig, orig), proto) it, a = pickle.loads(d) a.fromlist(data2) self.assertEqual(type(it), type(itorig)) self.assertEqual(list(it), data2) # exhausted iterator self.assertRaises(StopIteration, next, itorig) d = pickle.dumps((itorig, orig), proto) it, a = pickle.loads(d) a.fromlist(data2) self.assertEqual(list(it), []) def test_exhausted_iterator(self): a = array.array(self.typecode, self.example) self.assertEqual(list(a), list(self.example)) exhit = iter(a) empit = iter(a) for x in exhit: # exhaust the iterator next(empit) # not exhausted a.append(self.outside) self.assertEqual(list(exhit), []) self.assertEqual(list(empit), [self.outside]) self.assertEqual(list(a), list(self.example) + [self.outside]) 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) support.unlink(support.TESTFN) f = open(support.TESTFN, 'wb') try: a.tofile(f) f.close() b = array.array(self.typecode) f = open(support.TESTFN, 'rb') self.assertRaises(TypeError, b.fromfile) b.fromfile(f, len(self.example)) self.assertEqual(b, array.array(self.typecode, self.example)) self.assertNotEqual(a, b) self.assertRaises(EOFError, b.fromfile, f, len(self.example)+1) self.assertEqual(a, b) f.close() finally: if not f.closed: f.close() support.unlink(support.TESTFN) def test_fromfile_ioerror(self): # Issue #5395: Check if fromfile raises a proper OSError # instead of EOFError. a = array.array(self.typecode) f = open(support.TESTFN, 'wb') try: self.assertRaises(OSError, a.fromfile, f, len(self.example)) finally: f.close() support.unlink(support.TESTFN) def test_filewrite(self): a = array.array(self.typecode, 2*self.example) f = open(support.TESTFN, 'wb') try: f.write(a) f.close() b = array.array(self.typecode) f = open(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() support.unlink(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_tofrombytes(self): a = array.array(self.typecode, 2*self.example) b = array.array(self.typecode) self.assertRaises(TypeError, a.tobytes, 42) self.assertRaises(TypeError, b.frombytes) self.assertRaises(TypeError, b.frombytes, 42) b.frombytes(a.tobytes()) c = array.array(self.typecode, bytearray(a.tobytes())) self.assertEqual(a, b) self.assertEqual(a, c) if a.itemsize>1: self.assertRaises(ValueError, b.frombytes, b"x") def test_fromarray(self): a = array.array(self.typecode, self.example) b = array.array(self.typecode, a) self.assertEqual(a, b) 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.assertIs(a == 42, False) self.assertIs(a != 42, True) self.assertIs(a == a, True) self.assertIs(a != a, False) self.assertIs(a < a, False) self.assertIs(a <= a, True) self.assertIs(a > a, False) self.assertIs(a >= a, True) al = array.array(self.typecode, self.smallerexample) ab = array.array(self.typecode, self.biggerexample) self.assertIs(a == 2*a, False) self.assertIs(a != 2*a, True) self.assertIs(a < 2*a, True) self.assertIs(a <= 2*a, True) self.assertIs(a > 2*a, False) self.assertIs(a >= 2*a, False) self.assertIs(a == al, False) self.assertIs(a != al, True) self.assertIs(a < al, False) self.assertIs(a <= al, False) self.assertIs(a > al, True) self.assertIs(a >= al, True) self.assertIs(a == ab, False) self.assertIs(a != ab, True) self.assertIs(a < ab, True) self.assertIs(a <= ab, True) self.assertIs(a > ab, False) self.assertIs(a >= ab, 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.assertIs(a, 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) ) a = 5 * array.array(self.typecode, self.example[:1]) self.assertEqual( a, array.array(self.typecode, [a[0]] * 5) ) self.assertRaises(TypeError, a.__mul__, "bad") def test_imul(self): a = array.array(self.typecode, self.example) b = a a *= 5 self.assertIs(a, b) self.assertEqual( a, array.array(self.typecode, 5*self.example) ) a *= 0 self.assertIs(a, b) self.assertEqual(a, array.array(self.typecode)) a *= 1000 self.assertIs(a, b) self.assertEqual(a, array.array(self.typecode)) a *= -1 self.assertIs(a, 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[0], self.example[0]) self.assertEntryEqual(a[-1], self.example[-1]) self.assertEntryEqual(a[-1], 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[0] = 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[-1] = 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, sys.maxsize, -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.__setitem__, slice(0, 0), None) self.assertRaises(TypeError, a.__setitem__, slice(0, 1), None) b = array.array(self.badtypecode()) 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, sys.maxsize, -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.assertEqual(a, array.array(self.typecode, L)) del L[start:stop:step] del a[start:stop:step] self.assertEqual(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: self.skipTest('gc module not available') a = array.array(self.typecode) l = [iter(a)] l.append(l) gc.collect() def test_buffer(self): a = array.array(self.typecode, self.example) m = memoryview(a) expected = m.tobytes() self.assertEqual(a.tobytes(), expected) self.assertEqual(a.tobytes()[0], expected[0]) # Resizing is forbidden when there are buffer exports. # For issue 4509, we also check after each error that # the array was not modified. self.assertRaises(BufferError, a.append, a[0]) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, a.extend, a[0:1]) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, a.remove, a[0]) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, a.pop, 0) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, a.fromlist, a.tolist()) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, a.frombytes, a.tobytes()) self.assertEqual(m.tobytes(), expected) if self.typecode == 'u': self.assertRaises(BufferError, a.fromunicode, a.tounicode()) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, operator.imul, a, 2) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, operator.imul, a, 0) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, operator.setitem, a, slice(0, 0), a) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, operator.delitem, a, 0) self.assertEqual(m.tobytes(), expected) self.assertRaises(BufferError, operator.delitem, a, slice(0, 1)) self.assertEqual(m.tobytes(), expected) def test_weakref(self): s = array.array(self.typecode, self.example) p = weakref.proxy(s) self.assertEqual(p.tobytes(), s.tobytes()) s = None support.gc_collect() # For PyPy or other GCs. self.assertRaises(ReferenceError, len, p) @unittest.skipUnless(hasattr(sys, 'getrefcount'), 'test needs sys.getrefcount()') def test_bug_782369(self): 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) def test_create_from_bytes(self): # XXX This test probably needs to be moved in a subclass or # generalized to use self.typecode. a = array.array('H', b"1234") self.assertEqual(len(a) * a.itemsize, 4) @support.cpython_only def test_sizeof_with_buffer(self): a = array.array(self.typecode, self.example) basesize = support.calcvobjsize('Pn2Pi') buffer_size = a.buffer_info()[1] * a.itemsize support.check_sizeof(self, a, basesize + buffer_size) @support.cpython_only def test_sizeof_without_buffer(self): a = array.array(self.typecode) basesize = support.calcvobjsize('Pn2Pi') support.check_sizeof(self, a, basesize) def test_initialize_with_unicode(self): if self.typecode != 'u': with self.assertRaises(TypeError) as cm: a = array.array(self.typecode, 'foo') self.assertIn("cannot use a str", str(cm.exception)) with self.assertRaises(TypeError) as cm: a = array.array(self.typecode, array.array('u', 'foo')) self.assertIn("cannot use a unicode array", str(cm.exception)) else: a = array.array(self.typecode, "foo") a = array.array(self.typecode, array.array('u', 'foo')) @support.cpython_only def test_obsolete_write_lock(self): from _testcapi import getbuffer_with_null_view a = array.array('B', b"") self.assertRaises(BufferError, getbuffer_with_null_view, a) def test_free_after_iterating(self): support.check_free_after_iterating(self, iter, array.array, (self.typecode,)) support.check_free_after_iterating(self, reversed, array.array, (self.typecode,)) class StringTest(BaseTest): def test_setitem(self): super().test_setitem() a = array.array(self.typecode, self.example) self.assertRaises(TypeError, a.__setitem__, 0, self.example[:2]) class UnicodeTest(StringTest, unittest.TestCase): typecode = 'u' example = '\x01\u263a\x00\ufeff' smallerexample = '\x01\u263a\x00\ufefe' biggerexample = '\x01\u263a\x01\ufeff' outside = str('\x33') minitemsize = 2 def test_unicode(self): self.assertRaises(TypeError, array.array, 'b', 'foo') a = array.array('u', '\xa0\xc2\u1234') a.fromunicode(' ') a.fromunicode('') a.fromunicode('') a.fromunicode('\x11abc\xff\u1234') s = a.tounicode() self.assertEqual(s, '\xa0\xc2\u1234 \x11abc\xff\u1234') self.assertEqual(a.itemsize, sizeof_wchar) s = '\x00="\'a\\b\x80\xff\u0000\u0001\u1234' a = array.array('u', s) self.assertEqual( repr(a), "array('u', '\\x00=\"\\'a\\\\b\\x80\xff\\x00\\x01\u1234')") self.assertRaises(TypeError, a.fromunicode) def test_issue17223(self): # this used to crash if sizeof_wchar == 4: # U+FFFFFFFF is an invalid code point in Unicode 6.0 invalid_str = b'\xff\xff\xff\xff' else: # PyUnicode_FromUnicode() cannot fail with 16-bit wchar_t self.skipTest("specific to 32-bit wchar_t") a = array.array('u', invalid_str) self.assertRaises(ValueError, a.tounicode) self.assertRaises(ValueError, str, a) 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[-100:100:2], 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), list(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") def test_frombytearray(self): a = array.array('b', range(10)) b = array.array(self.typecode, a) self.assertEqual(a, b) class IntegerNumberTest(NumberTest): def test_type_error(self): a = array.array(self.typecode) a.append(42) with self.assertRaises(TypeError): a.append(42.0) with self.assertRaises(TypeError): a[0] = 42.0 class Intable: def __init__(self, num): self._num = num def __index__(self): return self._num def __int__(self): return self._num def __sub__(self, other): return Intable(int(self) - int(other)) def __add__(self, other): return Intable(int(self) + int(other)) class SignedNumberTest(IntegerNumberTest): 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 * int(pow(2, a.itemsize * 8 - 1)) upper = int(pow(2, a.itemsize * 8 - 1)) - 1 self.check_overflow(lower, upper) self.check_overflow(Intable(lower), Intable(upper)) class UnsignedNumberTest(IntegerNumberTest): 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 = int(pow(2, a.itemsize * 8)) - 1 self.check_overflow(lower, upper) self.check_overflow(Intable(lower), Intable(upper)) def test_bytes_extend(self): s = bytes(self.example) a = array.array(self.typecode, self.example) a.extend(s) self.assertEqual( a, array.array(self.typecode, self.example+self.example) ) a = array.array(self.typecode, self.example) a.extend(bytearray(reversed(s))) self.assertEqual( a, array.array(self.typecode, self.example+self.example[::-1]) ) class ByteTest(SignedNumberTest, unittest.TestCase): typecode = 'b' minitemsize = 1 class UnsignedByteTest(UnsignedNumberTest, unittest.TestCase): typecode = 'B' minitemsize = 1 class ShortTest(SignedNumberTest, unittest.TestCase): typecode = 'h' minitemsize = 2 class UnsignedShortTest(UnsignedNumberTest, unittest.TestCase): typecode = 'H' minitemsize = 2 class IntTest(SignedNumberTest, unittest.TestCase): typecode = 'i' minitemsize = 2 class UnsignedIntTest(UnsignedNumberTest, unittest.TestCase): typecode = 'I' minitemsize = 2 class LongTest(SignedNumberTest, unittest.TestCase): typecode = 'l' minitemsize = 4 class UnsignedLongTest(UnsignedNumberTest, unittest.TestCase): typecode = 'L' minitemsize = 4 class LongLongTest(SignedNumberTest, unittest.TestCase): typecode = 'q' minitemsize = 8 class UnsignedLongLongTest(UnsignedNumberTest, unittest.TestCase): typecode = 'Q' minitemsize = 8 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_nan(self): a = array.array(self.typecode, [float('nan')]) b = array.array(self.typecode, [float('nan')]) self.assertIs(a != b, True) self.assertIs(a == b, False) self.assertIs(a > b, False) self.assertIs(a >= b, False) self.assertIs(a < b, False) self.assertIs(a <= b, False) 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.tobytes(), b.tobytes()) b.byteswap() self.assertEqual(a, b) class FloatTest(FPTest, unittest.TestCase): typecode = 'f' minitemsize = 4 class DoubleTest(FPTest, unittest.TestCase): 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") class LargeArrayTest(unittest.TestCase): typecode = 'b' def example(self, size): # We assess a base memuse of <=2.125 for constructing this array base = array.array(self.typecode, [0, 1, 2, 3, 4, 5, 6, 7]) * (size // 8) base += array.array(self.typecode, [99]*(size % 8) + [8, 9, 10, 11]) return base @support.bigmemtest(_2G, memuse=2.125) def test_example_data(self, size): example = self.example(size) self.assertEqual(len(example), size+4) @support.bigmemtest(_2G, memuse=2.125) def test_access(self, size): example = self.example(size) self.assertEqual(example[0], 0) self.assertEqual(example[-(size+4)], 0) self.assertEqual(example[size], 8) self.assertEqual(example[-4], 8) self.assertEqual(example[size+3], 11) self.assertEqual(example[-1], 11) @support.bigmemtest(_2G, memuse=2.125+1) def test_slice(self, size): example = self.example(size) self.assertEqual(list(example[:4]), [0, 1, 2, 3]) self.assertEqual(list(example[-4:]), [8, 9, 10, 11]) part = example[1:-1] self.assertEqual(len(part), size+2) self.assertEqual(part[0], 1) self.assertEqual(part[-1], 10) del part part = example[::2] self.assertEqual(len(part), (size+5)//2) self.assertEqual(list(part[:4]), [0, 2, 4, 6]) if size % 2: self.assertEqual(list(part[-2:]), [9, 11]) else: self.assertEqual(list(part[-2:]), [8, 10]) @support.bigmemtest(_2G, memuse=2.125) def test_count(self, size): example = self.example(size) self.assertEqual(example.count(0), size//8) self.assertEqual(example.count(11), 1) @support.bigmemtest(_2G, memuse=2.125) def test_append(self, size): example = self.example(size) example.append(12) self.assertEqual(example[-1], 12) @support.bigmemtest(_2G, memuse=2.125) def test_extend(self, size): example = self.example(size) example.extend(iter([12, 13, 14, 15])) self.assertEqual(len(example), size+8) self.assertEqual(list(example[-8:]), [8, 9, 10, 11, 12, 13, 14, 15]) @support.bigmemtest(_2G, memuse=2.125) def test_frombytes(self, size): example = self.example(size) example.frombytes(b'abcd') self.assertEqual(len(example), size+8) self.assertEqual(list(example[-8:]), [8, 9, 10, 11] + list(b'abcd')) @support.bigmemtest(_2G, memuse=2.125) def test_fromlist(self, size): example = self.example(size) example.fromlist([12, 13, 14, 15]) self.assertEqual(len(example), size+8) self.assertEqual(list(example[-8:]), [8, 9, 10, 11, 12, 13, 14, 15]) @support.bigmemtest(_2G, memuse=2.125) def test_index(self, size): example = self.example(size) self.assertEqual(example.index(0), 0) self.assertEqual(example.index(1), 1) self.assertEqual(example.index(7), 7) self.assertEqual(example.index(11), size+3) @support.bigmemtest(_2G, memuse=2.125) def test_insert(self, size): example = self.example(size) example.insert(0, 12) example.insert(10, 13) example.insert(size+1, 14) self.assertEqual(len(example), size+7) self.assertEqual(example[0], 12) self.assertEqual(example[10], 13) self.assertEqual(example[size+1], 14) @support.bigmemtest(_2G, memuse=2.125) def test_pop(self, size): example = self.example(size) self.assertEqual(example.pop(0), 0) self.assertEqual(example[0], 1) self.assertEqual(example.pop(size+1), 10) self.assertEqual(example[size+1], 11) self.assertEqual(example.pop(1), 2) self.assertEqual(example[1], 3) self.assertEqual(len(example), size+1) self.assertEqual(example.pop(), 11) self.assertEqual(len(example), size) @support.bigmemtest(_2G, memuse=2.125) def test_remove(self, size): example = self.example(size) example.remove(0) self.assertEqual(len(example), size+3) self.assertEqual(example[0], 1) example.remove(10) self.assertEqual(len(example), size+2) self.assertEqual(example[size], 9) self.assertEqual(example[size+1], 11) @support.bigmemtest(_2G, memuse=2.125) def test_reverse(self, size): example = self.example(size) example.reverse() self.assertEqual(len(example), size+4) self.assertEqual(example[0], 11) self.assertEqual(example[3], 8) self.assertEqual(example[-1], 0) example.reverse() self.assertEqual(len(example), size+4) self.assertEqual(list(example[:4]), [0, 1, 2, 3]) self.assertEqual(list(example[-4:]), [8, 9, 10, 11]) # list takes about 9 bytes per element @support.bigmemtest(_2G, memuse=2.125+9) def test_tolist(self, size): example = self.example(size) ls = example.tolist() self.assertEqual(len(ls), len(example)) self.assertEqual(ls[:8], list(example[:8])) self.assertEqual(ls[-8:], list(example[-8:])) if __name__ == "__main__": unittest.main()