| # Python test set -- part 6, built-in types |
| |
| from test.support import run_unittest, run_with_locale |
| import collections |
| import locale |
| import sys |
| import types |
| import unittest |
| |
| class TypesTests(unittest.TestCase): |
| |
| def test_truth_values(self): |
| if None: self.fail('None is true instead of false') |
| if 0: self.fail('0 is true instead of false') |
| if 0.0: self.fail('0.0 is true instead of false') |
| if '': self.fail('\'\' is true instead of false') |
| if not 1: self.fail('1 is false instead of true') |
| if not 1.0: self.fail('1.0 is false instead of true') |
| if not 'x': self.fail('\'x\' is false instead of true') |
| if not {'x': 1}: self.fail('{\'x\': 1} is false instead of true') |
| def f(): pass |
| class C: pass |
| x = C() |
| if not f: self.fail('f is false instead of true') |
| if not C: self.fail('C is false instead of true') |
| if not sys: self.fail('sys is false instead of true') |
| if not x: self.fail('x is false instead of true') |
| |
| def test_boolean_ops(self): |
| if 0 or 0: self.fail('0 or 0 is true instead of false') |
| if 1 and 1: pass |
| else: self.fail('1 and 1 is false instead of true') |
| if not 1: self.fail('not 1 is true instead of false') |
| |
| def test_comparisons(self): |
| if 0 < 1 <= 1 == 1 >= 1 > 0 != 1: pass |
| else: self.fail('int comparisons failed') |
| if 0.0 < 1.0 <= 1.0 == 1.0 >= 1.0 > 0.0 != 1.0: pass |
| else: self.fail('float comparisons failed') |
| if '' < 'a' <= 'a' == 'a' < 'abc' < 'abd' < 'b': pass |
| else: self.fail('string comparisons failed') |
| if None is None: pass |
| else: self.fail('identity test failed') |
| |
| def test_float_constructor(self): |
| self.assertRaises(ValueError, float, '') |
| self.assertRaises(ValueError, float, '5\0') |
| |
| def test_zero_division(self): |
| try: 5.0 / 0.0 |
| except ZeroDivisionError: pass |
| else: self.fail("5.0 / 0.0 didn't raise ZeroDivisionError") |
| |
| try: 5.0 // 0.0 |
| except ZeroDivisionError: pass |
| else: self.fail("5.0 // 0.0 didn't raise ZeroDivisionError") |
| |
| try: 5.0 % 0.0 |
| except ZeroDivisionError: pass |
| else: self.fail("5.0 % 0.0 didn't raise ZeroDivisionError") |
| |
| try: 5 / 0 |
| except ZeroDivisionError: pass |
| else: self.fail("5 / 0 didn't raise ZeroDivisionError") |
| |
| try: 5 // 0 |
| except ZeroDivisionError: pass |
| else: self.fail("5 // 0 didn't raise ZeroDivisionError") |
| |
| try: 5 % 0 |
| except ZeroDivisionError: pass |
| else: self.fail("5 % 0 didn't raise ZeroDivisionError") |
| |
| def test_numeric_types(self): |
| if 0 != 0.0 or 1 != 1.0 or -1 != -1.0: |
| self.fail('int/float value not equal') |
| # calling built-in types without argument must return 0 |
| if int() != 0: self.fail('int() does not return 0') |
| if float() != 0.0: self.fail('float() does not return 0.0') |
| if int(1.9) == 1 == int(1.1) and int(-1.1) == -1 == int(-1.9): pass |
| else: self.fail('int() does not round properly') |
| if float(1) == 1.0 and float(-1) == -1.0 and float(0) == 0.0: pass |
| else: self.fail('float() does not work properly') |
| |
| def test_float_to_string(self): |
| def test(f, result): |
| self.assertEqual(f.__format__('e'), result) |
| self.assertEqual('%e' % f, result) |
| |
| # test all 2 digit exponents, both with __format__ and with |
| # '%' formatting |
| for i in range(-99, 100): |
| test(float('1.5e'+str(i)), '1.500000e{0:+03d}'.format(i)) |
| |
| # test some 3 digit exponents |
| self.assertEqual(1.5e100.__format__('e'), '1.500000e+100') |
| self.assertEqual('%e' % 1.5e100, '1.500000e+100') |
| |
| self.assertEqual(1.5e101.__format__('e'), '1.500000e+101') |
| self.assertEqual('%e' % 1.5e101, '1.500000e+101') |
| |
| self.assertEqual(1.5e-100.__format__('e'), '1.500000e-100') |
| self.assertEqual('%e' % 1.5e-100, '1.500000e-100') |
| |
| self.assertEqual(1.5e-101.__format__('e'), '1.500000e-101') |
| self.assertEqual('%e' % 1.5e-101, '1.500000e-101') |
| |
| self.assertEqual('%g' % 1.0, '1') |
| self.assertEqual('%#g' % 1.0, '1.00000') |
| |
| def test_normal_integers(self): |
| # Ensure the first 256 integers are shared |
| a = 256 |
| b = 128*2 |
| if a is not b: self.fail('256 is not shared') |
| if 12 + 24 != 36: self.fail('int op') |
| if 12 + (-24) != -12: self.fail('int op') |
| if (-12) + 24 != 12: self.fail('int op') |
| if (-12) + (-24) != -36: self.fail('int op') |
| if not 12 < 24: self.fail('int op') |
| if not -24 < -12: self.fail('int op') |
| # Test for a particular bug in integer multiply |
| xsize, ysize, zsize = 238, 356, 4 |
| if not (xsize*ysize*zsize == zsize*xsize*ysize == 338912): |
| self.fail('int mul commutativity') |
| # And another. |
| m = -sys.maxsize - 1 |
| for divisor in 1, 2, 4, 8, 16, 32: |
| j = m // divisor |
| prod = divisor * j |
| if prod != m: |
| self.fail("%r * %r == %r != %r" % (divisor, j, prod, m)) |
| if type(prod) is not int: |
| self.fail("expected type(prod) to be int, not %r" % |
| type(prod)) |
| # Check for unified integral type |
| for divisor in 1, 2, 4, 8, 16, 32: |
| j = m // divisor - 1 |
| prod = divisor * j |
| if type(prod) is not int: |
| self.fail("expected type(%r) to be int, not %r" % |
| (prod, type(prod))) |
| # Check for unified integral type |
| m = sys.maxsize |
| for divisor in 1, 2, 4, 8, 16, 32: |
| j = m // divisor + 1 |
| prod = divisor * j |
| if type(prod) is not int: |
| self.fail("expected type(%r) to be int, not %r" % |
| (prod, type(prod))) |
| |
| x = sys.maxsize |
| self.assertIsInstance(x + 1, int, |
| "(sys.maxsize + 1) should have returned int") |
| self.assertIsInstance(-x - 1, int, |
| "(-sys.maxsize - 1) should have returned int") |
| self.assertIsInstance(-x - 2, int, |
| "(-sys.maxsize - 2) should have returned int") |
| |
| try: 5 << -5 |
| except ValueError: pass |
| else: self.fail('int negative shift <<') |
| |
| try: 5 >> -5 |
| except ValueError: pass |
| else: self.fail('int negative shift >>') |
| |
| def test_floats(self): |
| if 12.0 + 24.0 != 36.0: self.fail('float op') |
| if 12.0 + (-24.0) != -12.0: self.fail('float op') |
| if (-12.0) + 24.0 != 12.0: self.fail('float op') |
| if (-12.0) + (-24.0) != -36.0: self.fail('float op') |
| if not 12.0 < 24.0: self.fail('float op') |
| if not -24.0 < -12.0: self.fail('float op') |
| |
| def test_strings(self): |
| if len('') != 0: self.fail('len(\'\')') |
| if len('a') != 1: self.fail('len(\'a\')') |
| if len('abcdef') != 6: self.fail('len(\'abcdef\')') |
| if 'xyz' + 'abcde' != 'xyzabcde': self.fail('string concatenation') |
| if 'xyz'*3 != 'xyzxyzxyz': self.fail('string repetition *3') |
| if 0*'abcde' != '': self.fail('string repetition 0*') |
| if min('abc') != 'a' or max('abc') != 'c': self.fail('min/max string') |
| if 'a' in 'abc' and 'b' in 'abc' and 'c' in 'abc' and 'd' not in 'abc': pass |
| else: self.fail('in/not in string') |
| x = 'x'*103 |
| if '%s!'%x != x+'!': self.fail('nasty string formatting bug') |
| |
| #extended slices for strings |
| a = '0123456789' |
| self.assertEqual(a[::], a) |
| self.assertEqual(a[::2], '02468') |
| self.assertEqual(a[1::2], '13579') |
| self.assertEqual(a[::-1],'9876543210') |
| self.assertEqual(a[::-2], '97531') |
| self.assertEqual(a[3::-2], '31') |
| self.assertEqual(a[-100:100:], a) |
| self.assertEqual(a[100:-100:-1], a[::-1]) |
| self.assertEqual(a[-100:100:2], '02468') |
| |
| def test_type_function(self): |
| self.assertRaises(TypeError, type, 1, 2) |
| self.assertRaises(TypeError, type, 1, 2, 3, 4) |
| |
| def test_int__format__(self): |
| def test(i, format_spec, result): |
| # just make sure we have the unified type for integers |
| assert type(i) == int |
| assert type(format_spec) == str |
| self.assertEqual(i.__format__(format_spec), result) |
| |
| test(123456789, 'd', '123456789') |
| test(123456789, 'd', '123456789') |
| |
| test(1, 'c', '\01') |
| |
| # sign and aligning are interdependent |
| test(1, "-", '1') |
| test(-1, "-", '-1') |
| test(1, "-3", ' 1') |
| test(-1, "-3", ' -1') |
| test(1, "+3", ' +1') |
| test(-1, "+3", ' -1') |
| test(1, " 3", ' 1') |
| test(-1, " 3", ' -1') |
| test(1, " ", ' 1') |
| test(-1, " ", '-1') |
| |
| # hex |
| test(3, "x", "3") |
| test(3, "X", "3") |
| test(1234, "x", "4d2") |
| test(-1234, "x", "-4d2") |
| test(1234, "8x", " 4d2") |
| test(-1234, "8x", " -4d2") |
| test(1234, "x", "4d2") |
| test(-1234, "x", "-4d2") |
| test(-3, "x", "-3") |
| test(-3, "X", "-3") |
| test(int('be', 16), "x", "be") |
| test(int('be', 16), "X", "BE") |
| test(-int('be', 16), "x", "-be") |
| test(-int('be', 16), "X", "-BE") |
| |
| # octal |
| test(3, "o", "3") |
| test(-3, "o", "-3") |
| test(65, "o", "101") |
| test(-65, "o", "-101") |
| test(1234, "o", "2322") |
| test(-1234, "o", "-2322") |
| test(1234, "-o", "2322") |
| test(-1234, "-o", "-2322") |
| test(1234, " o", " 2322") |
| test(-1234, " o", "-2322") |
| test(1234, "+o", "+2322") |
| test(-1234, "+o", "-2322") |
| |
| # binary |
| test(3, "b", "11") |
| test(-3, "b", "-11") |
| test(1234, "b", "10011010010") |
| test(-1234, "b", "-10011010010") |
| test(1234, "-b", "10011010010") |
| test(-1234, "-b", "-10011010010") |
| test(1234, " b", " 10011010010") |
| test(-1234, " b", "-10011010010") |
| test(1234, "+b", "+10011010010") |
| test(-1234, "+b", "-10011010010") |
| |
| # alternate (#) formatting |
| test(0, "#b", '0b0') |
| test(0, "-#b", '0b0') |
| test(1, "-#b", '0b1') |
| test(-1, "-#b", '-0b1') |
| test(-1, "-#5b", ' -0b1') |
| test(1, "+#5b", ' +0b1') |
| test(100, "+#b", '+0b1100100') |
| test(100, "#012b", '0b0001100100') |
| test(-100, "#012b", '-0b001100100') |
| |
| test(0, "#o", '0o0') |
| test(0, "-#o", '0o0') |
| test(1, "-#o", '0o1') |
| test(-1, "-#o", '-0o1') |
| test(-1, "-#5o", ' -0o1') |
| test(1, "+#5o", ' +0o1') |
| test(100, "+#o", '+0o144') |
| test(100, "#012o", '0o0000000144') |
| test(-100, "#012o", '-0o000000144') |
| |
| test(0, "#x", '0x0') |
| test(0, "-#x", '0x0') |
| test(1, "-#x", '0x1') |
| test(-1, "-#x", '-0x1') |
| test(-1, "-#5x", ' -0x1') |
| test(1, "+#5x", ' +0x1') |
| test(100, "+#x", '+0x64') |
| test(100, "#012x", '0x0000000064') |
| test(-100, "#012x", '-0x000000064') |
| test(123456, "#012x", '0x000001e240') |
| test(-123456, "#012x", '-0x00001e240') |
| |
| test(0, "#X", '0X0') |
| test(0, "-#X", '0X0') |
| test(1, "-#X", '0X1') |
| test(-1, "-#X", '-0X1') |
| test(-1, "-#5X", ' -0X1') |
| test(1, "+#5X", ' +0X1') |
| test(100, "+#X", '+0X64') |
| test(100, "#012X", '0X0000000064') |
| test(-100, "#012X", '-0X000000064') |
| test(123456, "#012X", '0X000001E240') |
| test(-123456, "#012X", '-0X00001E240') |
| |
| test(123, ',', '123') |
| test(-123, ',', '-123') |
| test(1234, ',', '1,234') |
| test(-1234, ',', '-1,234') |
| test(123456, ',', '123,456') |
| test(-123456, ',', '-123,456') |
| test(1234567, ',', '1,234,567') |
| test(-1234567, ',', '-1,234,567') |
| |
| # issue 5782, commas with no specifier type |
| test(1234, '010,', '00,001,234') |
| |
| # Unified type for integers |
| test(10**100, 'd', '1' + '0' * 100) |
| test(10**100+100, 'd', '1' + '0' * 97 + '100') |
| |
| # make sure these are errors |
| |
| # precision disallowed |
| self.assertRaises(ValueError, 3 .__format__, "1.3") |
| # sign not allowed with 'c' |
| self.assertRaises(ValueError, 3 .__format__, "+c") |
| # format spec must be string |
| self.assertRaises(TypeError, 3 .__format__, None) |
| self.assertRaises(TypeError, 3 .__format__, 0) |
| # can't have ',' with 'n' |
| self.assertRaises(ValueError, 3 .__format__, ",n") |
| # can't have ',' with 'c' |
| self.assertRaises(ValueError, 3 .__format__, ",c") |
| |
| # ensure that only int and float type specifiers work |
| for format_spec in ([chr(x) for x in range(ord('a'), ord('z')+1)] + |
| [chr(x) for x in range(ord('A'), ord('Z')+1)]): |
| if not format_spec in 'bcdoxXeEfFgGn%': |
| self.assertRaises(ValueError, 0 .__format__, format_spec) |
| self.assertRaises(ValueError, 1 .__format__, format_spec) |
| self.assertRaises(ValueError, (-1) .__format__, format_spec) |
| |
| # ensure that float type specifiers work; format converts |
| # the int to a float |
| for format_spec in 'eEfFgG%': |
| for value in [0, 1, -1, 100, -100, 1234567890, -1234567890]: |
| self.assertEqual(value.__format__(format_spec), |
| float(value).__format__(format_spec)) |
| |
| # Issue 6902 |
| test(123456, "0<20", '12345600000000000000') |
| test(123456, "1<20", '12345611111111111111') |
| test(123456, "*<20", '123456**************') |
| test(123456, "0>20", '00000000000000123456') |
| test(123456, "1>20", '11111111111111123456') |
| test(123456, "*>20", '**************123456') |
| test(123456, "0=20", '00000000000000123456') |
| test(123456, "1=20", '11111111111111123456') |
| test(123456, "*=20", '**************123456') |
| |
| @run_with_locale('LC_NUMERIC', 'en_US.UTF8') |
| def test_float__format__locale(self): |
| # test locale support for __format__ code 'n' |
| |
| for i in range(-10, 10): |
| x = 1234567890.0 * (10.0 ** i) |
| self.assertEqual(locale.format('%g', x, grouping=True), format(x, 'n')) |
| self.assertEqual(locale.format('%.10g', x, grouping=True), format(x, '.10n')) |
| |
| @run_with_locale('LC_NUMERIC', 'en_US.UTF8') |
| def test_int__format__locale(self): |
| # test locale support for __format__ code 'n' for integers |
| |
| x = 123456789012345678901234567890 |
| for i in range(0, 30): |
| self.assertEqual(locale.format('%d', x, grouping=True), format(x, 'n')) |
| |
| # move to the next integer to test |
| x = x // 10 |
| |
| rfmt = ">20n" |
| lfmt = "<20n" |
| cfmt = "^20n" |
| for x in (1234, 12345, 123456, 1234567, 12345678, 123456789, 1234567890, 12345678900): |
| self.assertEqual(len(format(0, rfmt)), len(format(x, rfmt))) |
| self.assertEqual(len(format(0, lfmt)), len(format(x, lfmt))) |
| self.assertEqual(len(format(0, cfmt)), len(format(x, cfmt))) |
| |
| def test_float__format__(self): |
| def test(f, format_spec, result): |
| self.assertEqual(f.__format__(format_spec), result) |
| self.assertEqual(format(f, format_spec), result) |
| |
| test(0.0, 'f', '0.000000') |
| |
| # the default is 'g', except for empty format spec |
| test(0.0, '', '0.0') |
| test(0.01, '', '0.01') |
| test(0.01, 'g', '0.01') |
| |
| # test for issue 3411 |
| test(1.23, '1', '1.23') |
| test(-1.23, '1', '-1.23') |
| test(1.23, '1g', '1.23') |
| test(-1.23, '1g', '-1.23') |
| |
| test( 1.0, ' g', ' 1') |
| test(-1.0, ' g', '-1') |
| test( 1.0, '+g', '+1') |
| test(-1.0, '+g', '-1') |
| test(1.1234e200, 'g', '1.1234e+200') |
| test(1.1234e200, 'G', '1.1234E+200') |
| |
| |
| test(1.0, 'f', '1.000000') |
| |
| test(-1.0, 'f', '-1.000000') |
| |
| test( 1.0, ' f', ' 1.000000') |
| test(-1.0, ' f', '-1.000000') |
| test( 1.0, '+f', '+1.000000') |
| test(-1.0, '+f', '-1.000000') |
| |
| # Python versions <= 3.0 switched from 'f' to 'g' formatting for |
| # values larger than 1e50. No longer. |
| f = 1.1234e90 |
| for fmt in 'f', 'F': |
| # don't do a direct equality check, since on some |
| # platforms only the first few digits of dtoa |
| # will be reliable |
| result = f.__format__(fmt) |
| self.assertEqual(len(result), 98) |
| self.assertEqual(result[-7], '.') |
| self.assertIn(result[:12], ('112340000000', '112339999999')) |
| f = 1.1234e200 |
| for fmt in 'f', 'F': |
| result = f.__format__(fmt) |
| self.assertEqual(len(result), 208) |
| self.assertEqual(result[-7], '.') |
| self.assertIn(result[:12], ('112340000000', '112339999999')) |
| |
| |
| test( 1.0, 'e', '1.000000e+00') |
| test(-1.0, 'e', '-1.000000e+00') |
| test( 1.0, 'E', '1.000000E+00') |
| test(-1.0, 'E', '-1.000000E+00') |
| test(1.1234e20, 'e', '1.123400e+20') |
| test(1.1234e20, 'E', '1.123400E+20') |
| |
| # No format code means use g, but must have a decimal |
| # and a number after the decimal. This is tricky, because |
| # a totaly empty format specifier means something else. |
| # So, just use a sign flag |
| test(1e200, '+g', '+1e+200') |
| test(1e200, '+', '+1e+200') |
| |
| test(1.1e200, '+g', '+1.1e+200') |
| test(1.1e200, '+', '+1.1e+200') |
| |
| # 0 padding |
| test(1234., '010f', '1234.000000') |
| test(1234., '011f', '1234.000000') |
| test(1234., '012f', '01234.000000') |
| test(-1234., '011f', '-1234.000000') |
| test(-1234., '012f', '-1234.000000') |
| test(-1234., '013f', '-01234.000000') |
| test(-1234.12341234, '013f', '-01234.123412') |
| test(-123456.12341234, '011.2f', '-0123456.12') |
| |
| # issue 5782, commas with no specifier type |
| test(1.2, '010,.2', '0,000,001.2') |
| |
| # 0 padding with commas |
| test(1234., '011,f', '1,234.000000') |
| test(1234., '012,f', '1,234.000000') |
| test(1234., '013,f', '01,234.000000') |
| test(-1234., '012,f', '-1,234.000000') |
| test(-1234., '013,f', '-1,234.000000') |
| test(-1234., '014,f', '-01,234.000000') |
| test(-12345., '015,f', '-012,345.000000') |
| test(-123456., '016,f', '-0,123,456.000000') |
| test(-123456., '017,f', '-0,123,456.000000') |
| test(-123456.12341234, '017,f', '-0,123,456.123412') |
| test(-123456.12341234, '013,.2f', '-0,123,456.12') |
| |
| # % formatting |
| test(-1.0, '%', '-100.000000%') |
| |
| # format spec must be string |
| self.assertRaises(TypeError, 3.0.__format__, None) |
| self.assertRaises(TypeError, 3.0.__format__, 0) |
| |
| # other format specifiers shouldn't work on floats, |
| # in particular int specifiers |
| for format_spec in ([chr(x) for x in range(ord('a'), ord('z')+1)] + |
| [chr(x) for x in range(ord('A'), ord('Z')+1)]): |
| if not format_spec in 'eEfFgGn%': |
| self.assertRaises(ValueError, format, 0.0, format_spec) |
| self.assertRaises(ValueError, format, 1.0, format_spec) |
| self.assertRaises(ValueError, format, -1.0, format_spec) |
| self.assertRaises(ValueError, format, 1e100, format_spec) |
| self.assertRaises(ValueError, format, -1e100, format_spec) |
| self.assertRaises(ValueError, format, 1e-100, format_spec) |
| self.assertRaises(ValueError, format, -1e-100, format_spec) |
| |
| # Alternate float formatting |
| test(1.0, '.0e', '1e+00') |
| test(1.0, '#.0e', '1.e+00') |
| test(1.0, '.0f', '1') |
| test(1.0, '#.0f', '1.') |
| test(1.1, 'g', '1.1') |
| test(1.1, '#g', '1.10000') |
| test(1.0, '.0%', '100%') |
| test(1.0, '#.0%', '100.%') |
| |
| # Issue 7094: Alternate formatting (specified by #) |
| test(1.0, '0e', '1.000000e+00') |
| test(1.0, '#0e', '1.000000e+00') |
| test(1.0, '0f', '1.000000' ) |
| test(1.0, '#0f', '1.000000') |
| test(1.0, '.1e', '1.0e+00') |
| test(1.0, '#.1e', '1.0e+00') |
| test(1.0, '.1f', '1.0') |
| test(1.0, '#.1f', '1.0') |
| test(1.0, '.1%', '100.0%') |
| test(1.0, '#.1%', '100.0%') |
| |
| # Issue 6902 |
| test(12345.6, "0<20", '12345.60000000000000') |
| test(12345.6, "1<20", '12345.61111111111111') |
| test(12345.6, "*<20", '12345.6*************') |
| test(12345.6, "0>20", '000000000000012345.6') |
| test(12345.6, "1>20", '111111111111112345.6') |
| test(12345.6, "*>20", '*************12345.6') |
| test(12345.6, "0=20", '000000000000012345.6') |
| test(12345.6, "1=20", '111111111111112345.6') |
| test(12345.6, "*=20", '*************12345.6') |
| |
| def test_format_spec_errors(self): |
| # int, float, and string all share the same format spec |
| # mini-language parser. |
| |
| # Check that we can't ask for too many digits. This is |
| # probably a CPython specific test. It tries to put the width |
| # into a C long. |
| self.assertRaises(ValueError, format, 0, '1'*10000 + 'd') |
| |
| # Similar with the precision. |
| self.assertRaises(ValueError, format, 0, '.' + '1'*10000 + 'd') |
| |
| # And may as well test both. |
| self.assertRaises(ValueError, format, 0, '1'*1000 + '.' + '1'*10000 + 'd') |
| |
| # Make sure commas aren't allowed with various type codes |
| for code in 'xXobns': |
| self.assertRaises(ValueError, format, 0, ',' + code) |
| |
| def test_internal_sizes(self): |
| self.assertGreater(object.__basicsize__, 0) |
| self.assertGreater(tuple.__itemsize__, 0) |
| |
| |
| class MappingProxyTests(unittest.TestCase): |
| mappingproxy = types.MappingProxyType |
| |
| def test_constructor(self): |
| class userdict(dict): |
| pass |
| |
| mapping = {'x': 1, 'y': 2} |
| self.assertEqual(self.mappingproxy(mapping), mapping) |
| mapping = userdict(x=1, y=2) |
| self.assertEqual(self.mappingproxy(mapping), mapping) |
| mapping = collections.ChainMap({'x': 1}, {'y': 2}) |
| self.assertEqual(self.mappingproxy(mapping), mapping) |
| |
| self.assertRaises(TypeError, self.mappingproxy, 10) |
| self.assertRaises(TypeError, self.mappingproxy, ("a", "tuple")) |
| self.assertRaises(TypeError, self.mappingproxy, ["a", "list"]) |
| |
| def test_methods(self): |
| attrs = set(dir(self.mappingproxy({}))) - set(dir(object())) |
| self.assertEqual(attrs, { |
| '__contains__', |
| '__getitem__', |
| '__iter__', |
| '__len__', |
| 'copy', |
| 'get', |
| 'items', |
| 'keys', |
| 'values', |
| }) |
| |
| def test_get(self): |
| view = self.mappingproxy({'a': 'A', 'b': 'B'}) |
| self.assertEqual(view['a'], 'A') |
| self.assertEqual(view['b'], 'B') |
| self.assertRaises(KeyError, view.__getitem__, 'xxx') |
| self.assertEqual(view.get('a'), 'A') |
| self.assertIsNone(view.get('xxx')) |
| self.assertEqual(view.get('xxx', 42), 42) |
| |
| def test_missing(self): |
| class dictmissing(dict): |
| def __missing__(self, key): |
| return "missing=%s" % key |
| |
| view = self.mappingproxy(dictmissing(x=1)) |
| self.assertEqual(view['x'], 1) |
| self.assertEqual(view['y'], 'missing=y') |
| self.assertEqual(view.get('x'), 1) |
| self.assertEqual(view.get('y'), None) |
| self.assertEqual(view.get('y', 42), 42) |
| self.assertTrue('x' in view) |
| self.assertFalse('y' in view) |
| |
| def test_customdict(self): |
| class customdict(dict): |
| def __contains__(self, key): |
| if key == 'magic': |
| return True |
| else: |
| return dict.__contains__(self, key) |
| |
| def __iter__(self): |
| return iter(('iter',)) |
| |
| def __len__(self): |
| return 500 |
| |
| def copy(self): |
| return 'copy' |
| |
| def keys(self): |
| return 'keys' |
| |
| def items(self): |
| return 'items' |
| |
| def values(self): |
| return 'values' |
| |
| def __getitem__(self, key): |
| return "getitem=%s" % dict.__getitem__(self, key) |
| |
| def get(self, key, default=None): |
| return "get=%s" % dict.get(self, key, 'default=%r' % default) |
| |
| custom = customdict({'key': 'value'}) |
| view = self.mappingproxy(custom) |
| self.assertTrue('key' in view) |
| self.assertTrue('magic' in view) |
| self.assertFalse('xxx' in view) |
| self.assertEqual(view['key'], 'getitem=value') |
| self.assertRaises(KeyError, view.__getitem__, 'xxx') |
| self.assertEqual(tuple(view), ('iter',)) |
| self.assertEqual(len(view), 500) |
| self.assertEqual(view.copy(), 'copy') |
| self.assertEqual(view.get('key'), 'get=value') |
| self.assertEqual(view.get('xxx'), 'get=default=None') |
| self.assertEqual(view.items(), 'items') |
| self.assertEqual(view.keys(), 'keys') |
| self.assertEqual(view.values(), 'values') |
| |
| def test_chainmap(self): |
| d1 = {'x': 1} |
| d2 = {'y': 2} |
| mapping = collections.ChainMap(d1, d2) |
| view = self.mappingproxy(mapping) |
| self.assertTrue('x' in view) |
| self.assertTrue('y' in view) |
| self.assertFalse('z' in view) |
| self.assertEqual(view['x'], 1) |
| self.assertEqual(view['y'], 2) |
| self.assertRaises(KeyError, view.__getitem__, 'z') |
| self.assertEqual(tuple(sorted(view)), ('x', 'y')) |
| self.assertEqual(len(view), 2) |
| copy = view.copy() |
| self.assertIsNot(copy, mapping) |
| self.assertIsInstance(copy, collections.ChainMap) |
| self.assertEqual(copy, mapping) |
| self.assertEqual(view.get('x'), 1) |
| self.assertEqual(view.get('y'), 2) |
| self.assertIsNone(view.get('z')) |
| self.assertEqual(tuple(sorted(view.items())), (('x', 1), ('y', 2))) |
| self.assertEqual(tuple(sorted(view.keys())), ('x', 'y')) |
| self.assertEqual(tuple(sorted(view.values())), (1, 2)) |
| |
| def test_contains(self): |
| view = self.mappingproxy(dict.fromkeys('abc')) |
| self.assertTrue('a' in view) |
| self.assertTrue('b' in view) |
| self.assertTrue('c' in view) |
| self.assertFalse('xxx' in view) |
| |
| def test_views(self): |
| mapping = {} |
| view = self.mappingproxy(mapping) |
| keys = view.keys() |
| values = view.values() |
| items = view.items() |
| self.assertEqual(list(keys), []) |
| self.assertEqual(list(values), []) |
| self.assertEqual(list(items), []) |
| mapping['key'] = 'value' |
| self.assertEqual(list(keys), ['key']) |
| self.assertEqual(list(values), ['value']) |
| self.assertEqual(list(items), [('key', 'value')]) |
| |
| def test_len(self): |
| for expected in range(6): |
| data = dict.fromkeys('abcde'[:expected]) |
| self.assertEqual(len(data), expected) |
| view = self.mappingproxy(data) |
| self.assertEqual(len(view), expected) |
| |
| def test_iterators(self): |
| keys = ('x', 'y') |
| values = (1, 2) |
| items = tuple(zip(keys, values)) |
| view = self.mappingproxy(dict(items)) |
| self.assertEqual(set(view), set(keys)) |
| self.assertEqual(set(view.keys()), set(keys)) |
| self.assertEqual(set(view.values()), set(values)) |
| self.assertEqual(set(view.items()), set(items)) |
| |
| def test_copy(self): |
| original = {'key1': 27, 'key2': 51, 'key3': 93} |
| view = self.mappingproxy(original) |
| copy = view.copy() |
| self.assertEqual(type(copy), dict) |
| self.assertEqual(copy, original) |
| original['key1'] = 70 |
| self.assertEqual(view['key1'], 70) |
| self.assertEqual(copy['key1'], 27) |
| |
| |
| def test_main(): |
| run_unittest(TypesTests, MappingProxyTests) |
| |
| if __name__ == '__main__': |
| test_main() |