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920 lines
29 KiB
Python
920 lines
29 KiB
Python
# Python test set -- part 1, grammar.
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# This just tests whether the parser accepts them all.
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# NOTE: When you run this test as a script from the command line, you
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# get warnings about certain hex/oct constants. Since those are
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# issued by the parser, you can't suppress them by adding a
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# filterwarnings() call to this module. Therefore, to shut up the
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# regression test, the filterwarnings() call has been added to
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# regrtest.py.
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from test.test_support import run_unittest, check_syntax_error
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import unittest
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import sys
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# testing import *
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from sys import *
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class TokenTests(unittest.TestCase):
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def testBackslash(self):
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# Backslash means line continuation:
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x = 1 \
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+ 1
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self.assertEquals(x, 2, 'backslash for line continuation')
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# Backslash does not means continuation in comments :\
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x = 0
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self.assertEquals(x, 0, 'backslash ending comment')
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def testPlainIntegers(self):
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self.assertEquals(0xff, 255)
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self.assertEquals(0377, 255)
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self.assertEquals(2147483647, 017777777777)
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from sys import maxint
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if maxint == 2147483647:
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self.assertEquals(-2147483647-1, -020000000000)
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# XXX -2147483648
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self.assert_(037777777777 > 0)
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self.assert_(0xffffffff > 0)
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for s in '2147483648', '040000000000', '0x100000000':
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try:
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x = eval(s)
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except OverflowError:
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self.fail("OverflowError on huge integer literal %r" % s)
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elif maxint == 9223372036854775807:
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self.assertEquals(-9223372036854775807-1, -01000000000000000000000)
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self.assert_(01777777777777777777777 > 0)
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self.assert_(0xffffffffffffffff > 0)
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for s in '9223372036854775808', '02000000000000000000000', \
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'0x10000000000000000':
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try:
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x = eval(s)
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except OverflowError:
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self.fail("OverflowError on huge integer literal %r" % s)
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else:
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self.fail('Weird maxint value %r' % maxint)
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def testLongIntegers(self):
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x = 0L
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x = 0l
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x = 0xffffffffffffffffL
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x = 0xffffffffffffffffl
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x = 077777777777777777L
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x = 077777777777777777l
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x = 123456789012345678901234567890L
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x = 123456789012345678901234567890l
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def testFloats(self):
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x = 3.14
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x = 314.
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x = 0.314
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# XXX x = 000.314
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x = .314
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x = 3e14
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x = 3E14
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x = 3e-14
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x = 3e+14
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x = 3.e14
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x = .3e14
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x = 3.1e4
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def testStringLiterals(self):
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x = ''; y = ""; self.assert_(len(x) == 0 and x == y)
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x = '\''; y = "'"; self.assert_(len(x) == 1 and x == y and ord(x) == 39)
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x = '"'; y = "\""; self.assert_(len(x) == 1 and x == y and ord(x) == 34)
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x = "doesn't \"shrink\" does it"
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y = 'doesn\'t "shrink" does it'
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self.assert_(len(x) == 24 and x == y)
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x = "does \"shrink\" doesn't it"
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y = 'does "shrink" doesn\'t it'
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self.assert_(len(x) == 24 and x == y)
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x = """
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The "quick"
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brown fox
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jumps over
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the 'lazy' dog.
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"""
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y = '\nThe "quick"\nbrown fox\njumps over\nthe \'lazy\' dog.\n'
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self.assertEquals(x, y)
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y = '''
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The "quick"
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brown fox
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jumps over
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the 'lazy' dog.
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'''
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self.assertEquals(x, y)
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y = "\n\
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The \"quick\"\n\
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brown fox\n\
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jumps over\n\
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the 'lazy' dog.\n\
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"
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self.assertEquals(x, y)
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y = '\n\
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The \"quick\"\n\
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brown fox\n\
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jumps over\n\
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the \'lazy\' dog.\n\
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'
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self.assertEquals(x, y)
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class GrammarTests(unittest.TestCase):
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# single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
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# XXX can't test in a script -- this rule is only used when interactive
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# file_input: (NEWLINE | stmt)* ENDMARKER
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# Being tested as this very moment this very module
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# expr_input: testlist NEWLINE
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# XXX Hard to test -- used only in calls to input()
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def testEvalInput(self):
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# testlist ENDMARKER
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x = eval('1, 0 or 1')
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def testFuncdef(self):
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### 'def' NAME parameters ':' suite
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### parameters: '(' [varargslist] ')'
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### varargslist: (fpdef ['=' test] ',')* ('*' NAME [',' ('**'|'*' '*') NAME]
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### | ('**'|'*' '*') NAME)
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### | fpdef ['=' test] (',' fpdef ['=' test])* [',']
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### fpdef: NAME | '(' fplist ')'
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### fplist: fpdef (',' fpdef)* [',']
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### arglist: (argument ',')* (argument | *' test [',' '**' test] | '**' test)
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### argument: [test '='] test # Really [keyword '='] test
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def f1(): pass
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f1()
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f1(*())
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f1(*(), **{})
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def f2(one_argument): pass
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def f3(two, arguments): pass
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def f4(two, (compound, (argument, list))): pass
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def f5((compound, first), two): pass
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self.assertEquals(f2.func_code.co_varnames, ('one_argument',))
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self.assertEquals(f3.func_code.co_varnames, ('two', 'arguments'))
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if sys.platform.startswith('java'):
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self.assertEquals(f4.func_code.co_varnames,
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('two', '(compound, (argument, list))', 'compound', 'argument',
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'list',))
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self.assertEquals(f5.func_code.co_varnames,
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('(compound, first)', 'two', 'compound', 'first'))
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else:
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self.assertEquals(f4.func_code.co_varnames,
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('two', '.1', 'compound', 'argument', 'list'))
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self.assertEquals(f5.func_code.co_varnames,
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('.0', 'two', 'compound', 'first'))
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def a1(one_arg,): pass
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def a2(two, args,): pass
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def v0(*rest): pass
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def v1(a, *rest): pass
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def v2(a, b, *rest): pass
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def v3(a, (b, c), *rest): return a, b, c, rest
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f1()
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f2(1)
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f2(1,)
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f3(1, 2)
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f3(1, 2,)
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f4(1, (2, (3, 4)))
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v0()
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v0(1)
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v0(1,)
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v0(1,2)
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v0(1,2,3,4,5,6,7,8,9,0)
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v1(1)
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v1(1,)
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v1(1,2)
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v1(1,2,3)
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v1(1,2,3,4,5,6,7,8,9,0)
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v2(1,2)
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v2(1,2,3)
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v2(1,2,3,4)
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v2(1,2,3,4,5,6,7,8,9,0)
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v3(1,(2,3))
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v3(1,(2,3),4)
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v3(1,(2,3),4,5,6,7,8,9,0)
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# ceval unpacks the formal arguments into the first argcount names;
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# thus, the names nested inside tuples must appear after these names.
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if sys.platform.startswith('java'):
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self.assertEquals(v3.func_code.co_varnames, ('a', '(b, c)', 'rest', 'b', 'c'))
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else:
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self.assertEquals(v3.func_code.co_varnames, ('a', '.1', 'rest', 'b', 'c'))
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self.assertEquals(v3(1, (2, 3), 4), (1, 2, 3, (4,)))
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def d01(a=1): pass
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d01()
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d01(1)
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d01(*(1,))
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d01(**{'a':2})
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def d11(a, b=1): pass
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d11(1)
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d11(1, 2)
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d11(1, **{'b':2})
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def d21(a, b, c=1): pass
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d21(1, 2)
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d21(1, 2, 3)
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d21(*(1, 2, 3))
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d21(1, *(2, 3))
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d21(1, 2, *(3,))
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d21(1, 2, **{'c':3})
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def d02(a=1, b=2): pass
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d02()
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d02(1)
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d02(1, 2)
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d02(*(1, 2))
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d02(1, *(2,))
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d02(1, **{'b':2})
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d02(**{'a': 1, 'b': 2})
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def d12(a, b=1, c=2): pass
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d12(1)
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d12(1, 2)
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d12(1, 2, 3)
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def d22(a, b, c=1, d=2): pass
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d22(1, 2)
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d22(1, 2, 3)
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d22(1, 2, 3, 4)
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def d01v(a=1, *rest): pass
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d01v()
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d01v(1)
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d01v(1, 2)
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d01v(*(1, 2, 3, 4))
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d01v(*(1,))
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d01v(**{'a':2})
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def d11v(a, b=1, *rest): pass
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d11v(1)
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d11v(1, 2)
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d11v(1, 2, 3)
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def d21v(a, b, c=1, *rest): pass
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d21v(1, 2)
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d21v(1, 2, 3)
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d21v(1, 2, 3, 4)
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d21v(*(1, 2, 3, 4))
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d21v(1, 2, **{'c': 3})
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def d02v(a=1, b=2, *rest): pass
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d02v()
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d02v(1)
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d02v(1, 2)
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d02v(1, 2, 3)
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d02v(1, *(2, 3, 4))
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d02v(**{'a': 1, 'b': 2})
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def d12v(a, b=1, c=2, *rest): pass
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d12v(1)
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d12v(1, 2)
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d12v(1, 2, 3)
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d12v(1, 2, 3, 4)
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d12v(*(1, 2, 3, 4))
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d12v(1, 2, *(3, 4, 5))
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d12v(1, *(2,), **{'c': 3})
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def d22v(a, b, c=1, d=2, *rest): pass
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d22v(1, 2)
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d22v(1, 2, 3)
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d22v(1, 2, 3, 4)
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d22v(1, 2, 3, 4, 5)
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d22v(*(1, 2, 3, 4))
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d22v(1, 2, *(3, 4, 5))
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d22v(1, *(2, 3), **{'d': 4})
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def d31v((x)): pass
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d31v(1)
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def d32v((x,)): pass
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d32v((1,))
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def testLambdef(self):
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### lambdef: 'lambda' [varargslist] ':' test
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l1 = lambda : 0
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self.assertEquals(l1(), 0)
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l2 = lambda : a[d] # XXX just testing the expression
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l3 = lambda : [2 < x for x in [-1, 3, 0L]]
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self.assertEquals(l3(), [0, 1, 0])
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l4 = lambda x = lambda y = lambda z=1 : z : y() : x()
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self.assertEquals(l4(), 1)
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l5 = lambda x, y, z=2: x + y + z
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self.assertEquals(l5(1, 2), 5)
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self.assertEquals(l5(1, 2, 3), 6)
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check_syntax_error(self, "lambda x: x = 2")
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### stmt: simple_stmt | compound_stmt
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# Tested below
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def testSimpleStmt(self):
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### simple_stmt: small_stmt (';' small_stmt)* [';']
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x = 1; pass; del x
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def foo():
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# verify statments that end with semi-colons
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x = 1; pass; del x;
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foo()
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### small_stmt: expr_stmt | print_stmt | pass_stmt | del_stmt | flow_stmt | import_stmt | global_stmt | access_stmt | exec_stmt
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# Tested below
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def testExprStmt(self):
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# (exprlist '=')* exprlist
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1
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1, 2, 3
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x = 1
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x = 1, 2, 3
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x = y = z = 1, 2, 3
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x, y, z = 1, 2, 3
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abc = a, b, c = x, y, z = xyz = 1, 2, (3, 4)
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check_syntax_error(self, "x + 1 = 1")
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check_syntax_error(self, "a + 1 = b + 2")
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def testPrintStmt(self):
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# 'print' (test ',')* [test]
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import StringIO
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# Can't test printing to real stdout without comparing output
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# which is not available in unittest.
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save_stdout = sys.stdout
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sys.stdout = StringIO.StringIO()
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print 1, 2, 3
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print 1, 2, 3,
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print
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print 0 or 1, 0 or 1,
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print 0 or 1
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# 'print' '>>' test ','
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print >> sys.stdout, 1, 2, 3
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print >> sys.stdout, 1, 2, 3,
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print >> sys.stdout
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print >> sys.stdout, 0 or 1, 0 or 1,
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print >> sys.stdout, 0 or 1
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# test printing to an instance
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class Gulp:
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def write(self, msg): pass
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gulp = Gulp()
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print >> gulp, 1, 2, 3
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print >> gulp, 1, 2, 3,
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print >> gulp
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print >> gulp, 0 or 1, 0 or 1,
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print >> gulp, 0 or 1
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# test print >> None
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def driver():
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oldstdout = sys.stdout
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sys.stdout = Gulp()
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try:
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tellme(Gulp())
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tellme()
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finally:
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sys.stdout = oldstdout
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# we should see this once
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def tellme(file=sys.stdout):
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print >> file, 'hello world'
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driver()
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# we should not see this at all
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def tellme(file=None):
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print >> file, 'goodbye universe'
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driver()
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self.assertEqual(sys.stdout.getvalue(), '''\
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1 2 3
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1 2 3
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1 1 1
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1 2 3
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1 2 3
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1 1 1
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hello world
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''')
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sys.stdout = save_stdout
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# syntax errors
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check_syntax_error(self, 'print ,')
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check_syntax_error(self, 'print >> x,')
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def testDelStmt(self):
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# 'del' exprlist
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abc = [1,2,3]
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x, y, z = abc
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xyz = x, y, z
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del abc
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del x, y, (z, xyz)
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def testPassStmt(self):
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# 'pass'
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pass
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# flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt
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# Tested below
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def testBreakStmt(self):
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# 'break'
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while 1: break
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def testContinueStmt(self):
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# 'continue'
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i = 1
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while i: i = 0; continue
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msg = ""
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while not msg:
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msg = "ok"
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try:
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continue
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msg = "continue failed to continue inside try"
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except:
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msg = "continue inside try called except block"
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if msg != "ok":
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self.fail(msg)
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msg = ""
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while not msg:
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msg = "finally block not called"
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try:
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continue
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finally:
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msg = "ok"
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if msg != "ok":
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self.fail(msg)
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def test_break_continue_loop(self):
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# This test warrants an explanation. It is a test specifically for SF bugs
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# #463359 and #462937. The bug is that a 'break' statement executed or
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# exception raised inside a try/except inside a loop, *after* a continue
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# statement has been executed in that loop, will cause the wrong number of
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# arguments to be popped off the stack and the instruction pointer reset to
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# a very small number (usually 0.) Because of this, the following test
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# *must* written as a function, and the tracking vars *must* be function
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# arguments with default values. Otherwise, the test will loop and loop.
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def test_inner(extra_burning_oil = 1, count=0):
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big_hippo = 2
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while big_hippo:
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count += 1
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try:
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if extra_burning_oil and big_hippo == 1:
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extra_burning_oil -= 1
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break
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big_hippo -= 1
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continue
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except:
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raise
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if count > 2 or big_hippo <> 1:
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self.fail("continue then break in try/except in loop broken!")
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test_inner()
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def testReturn(self):
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# 'return' [testlist]
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def g1(): return
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def g2(): return 1
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g1()
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x = g2()
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check_syntax_error(self, "class foo:return 1")
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def testYield(self):
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check_syntax_error(self, "class foo:yield 1")
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def testRaise(self):
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# 'raise' test [',' test]
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try: raise RuntimeError, 'just testing'
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except RuntimeError: pass
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try: raise KeyboardInterrupt
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except KeyboardInterrupt: pass
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def testImport(self):
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# 'import' dotted_as_names
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import sys
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import time, sys
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# 'from' dotted_name 'import' ('*' | '(' import_as_names ')' | import_as_names)
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from time import time
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from time import (time)
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# not testable inside a function, but already done at top of the module
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# from sys import *
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from sys import path, argv
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from sys import (path, argv)
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from sys import (path, argv,)
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def testGlobal(self):
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# 'global' NAME (',' NAME)*
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global a
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global a, b
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global one, two, three, four, five, six, seven, eight, nine, ten
|
|
|
|
def testExec(self):
|
|
# 'exec' expr ['in' expr [',' expr]]
|
|
z = None
|
|
del z
|
|
exec 'z=1+1\n'
|
|
if z != 2: self.fail('exec \'z=1+1\'\\n')
|
|
del z
|
|
exec 'z=1+1'
|
|
if z != 2: self.fail('exec \'z=1+1\'')
|
|
z = None
|
|
del z
|
|
import types
|
|
if hasattr(types, "UnicodeType"):
|
|
exec r"""if 1:
|
|
exec u'z=1+1\n'
|
|
if z != 2: self.fail('exec u\'z=1+1\'\\n')
|
|
del z
|
|
exec u'z=1+1'
|
|
if z != 2: self.fail('exec u\'z=1+1\'')"""
|
|
g = {}
|
|
exec 'z = 1' in g
|
|
if g.has_key('__builtins__'): del g['__builtins__']
|
|
if g != {'z': 1}: self.fail('exec \'z = 1\' in g')
|
|
g = {}
|
|
l = {}
|
|
|
|
import warnings
|
|
warnings.filterwarnings("ignore", "global statement", module="<string>")
|
|
exec 'global a; a = 1; b = 2' in g, l
|
|
if g.has_key('__builtins__'): del g['__builtins__']
|
|
if l.has_key('__builtins__'): del l['__builtins__']
|
|
if (g, l) != ({'a':1}, {'b':2}):
|
|
self.fail('exec ... in g (%s), l (%s)' %(g,l))
|
|
|
|
def testAssert(self):
|
|
# assert_stmt: 'assert' test [',' test]
|
|
assert 1
|
|
assert 1, 1
|
|
assert lambda x:x
|
|
assert 1, lambda x:x+1
|
|
try:
|
|
assert 0, "msg"
|
|
except AssertionError, e:
|
|
self.assertEquals(e.args[0], "msg")
|
|
else:
|
|
if __debug__:
|
|
self.fail("AssertionError not raised by assert 0")
|
|
|
|
### compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | funcdef | classdef
|
|
# Tested below
|
|
|
|
def testIf(self):
|
|
# 'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite]
|
|
if 1: pass
|
|
if 1: pass
|
|
else: pass
|
|
if 0: pass
|
|
elif 0: pass
|
|
if 0: pass
|
|
elif 0: pass
|
|
elif 0: pass
|
|
elif 0: pass
|
|
else: pass
|
|
|
|
def testWhile(self):
|
|
# 'while' test ':' suite ['else' ':' suite]
|
|
while 0: pass
|
|
while 0: pass
|
|
else: pass
|
|
|
|
def testFor(self):
|
|
# 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite]
|
|
for i in 1, 2, 3: pass
|
|
for i, j, k in (): pass
|
|
else: pass
|
|
class Squares:
|
|
def __init__(self, max):
|
|
self.max = max
|
|
self.sofar = []
|
|
def __len__(self): return len(self.sofar)
|
|
def __getitem__(self, i):
|
|
if not 0 <= i < self.max: raise IndexError
|
|
n = len(self.sofar)
|
|
while n <= i:
|
|
self.sofar.append(n*n)
|
|
n = n+1
|
|
return self.sofar[i]
|
|
n = 0
|
|
for x in Squares(10): n = n+x
|
|
if n != 285:
|
|
self.fail('for over growing sequence')
|
|
|
|
result = []
|
|
for x, in [(1,), (2,), (3,)]:
|
|
result.append(x)
|
|
self.assertEqual(result, [1, 2, 3])
|
|
|
|
def testTry(self):
|
|
### try_stmt: 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
|
|
### | 'try' ':' suite 'finally' ':' suite
|
|
### except_clause: 'except' [expr [',' expr]]
|
|
try:
|
|
1/0
|
|
except ZeroDivisionError:
|
|
pass
|
|
else:
|
|
pass
|
|
try: 1/0
|
|
except EOFError: pass
|
|
except TypeError, msg: pass
|
|
except RuntimeError, msg: pass
|
|
except: pass
|
|
else: pass
|
|
try: 1/0
|
|
except (EOFError, TypeError, ZeroDivisionError): pass
|
|
try: 1/0
|
|
except (EOFError, TypeError, ZeroDivisionError), msg: pass
|
|
try: pass
|
|
finally: pass
|
|
|
|
def testSuite(self):
|
|
# simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT
|
|
if 1: pass
|
|
if 1:
|
|
pass
|
|
if 1:
|
|
#
|
|
#
|
|
#
|
|
pass
|
|
pass
|
|
#
|
|
pass
|
|
#
|
|
|
|
def testTest(self):
|
|
### and_test ('or' and_test)*
|
|
### and_test: not_test ('and' not_test)*
|
|
### not_test: 'not' not_test | comparison
|
|
if not 1: pass
|
|
if 1 and 1: pass
|
|
if 1 or 1: pass
|
|
if not not not 1: pass
|
|
if not 1 and 1 and 1: pass
|
|
if 1 and 1 or 1 and 1 and 1 or not 1 and 1: pass
|
|
|
|
def testComparison(self):
|
|
### comparison: expr (comp_op expr)*
|
|
### comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
|
|
if 1: pass
|
|
x = (1 == 1)
|
|
if 1 == 1: pass
|
|
if 1 != 1: pass
|
|
if 1 <> 1: pass
|
|
if 1 < 1: pass
|
|
if 1 > 1: pass
|
|
if 1 <= 1: pass
|
|
if 1 >= 1: pass
|
|
if 1 is 1: pass
|
|
if 1 is not 1: pass
|
|
if 1 in (): pass
|
|
if 1 not in (): pass
|
|
if 1 < 1 > 1 == 1 >= 1 <= 1 <> 1 != 1 in 1 not in 1 is 1 is not 1: pass
|
|
|
|
def testBinaryMaskOps(self):
|
|
x = 1 & 1
|
|
x = 1 ^ 1
|
|
x = 1 | 1
|
|
|
|
def testShiftOps(self):
|
|
x = 1 << 1
|
|
x = 1 >> 1
|
|
x = 1 << 1 >> 1
|
|
|
|
def testAdditiveOps(self):
|
|
x = 1
|
|
x = 1 + 1
|
|
x = 1 - 1 - 1
|
|
x = 1 - 1 + 1 - 1 + 1
|
|
|
|
def testMultiplicativeOps(self):
|
|
x = 1 * 1
|
|
x = 1 / 1
|
|
x = 1 % 1
|
|
x = 1 / 1 * 1 % 1
|
|
|
|
def testUnaryOps(self):
|
|
x = +1
|
|
x = -1
|
|
x = ~1
|
|
x = ~1 ^ 1 & 1 | 1 & 1 ^ -1
|
|
x = -1*1/1 + 1*1 - ---1*1
|
|
|
|
def testSelectors(self):
|
|
### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
|
|
### subscript: expr | [expr] ':' [expr]
|
|
|
|
import sys, time
|
|
c = sys.path[0]
|
|
x = time.time()
|
|
x = sys.modules['time'].time()
|
|
a = '01234'
|
|
c = a[0]
|
|
c = a[-1]
|
|
s = a[0:5]
|
|
s = a[:5]
|
|
s = a[0:]
|
|
s = a[:]
|
|
s = a[-5:]
|
|
s = a[:-1]
|
|
s = a[-4:-3]
|
|
# A rough test of SF bug 1333982. http://python.org/sf/1333982
|
|
# The testing here is fairly incomplete.
|
|
# Test cases should include: commas with 1 and 2 colons
|
|
d = {}
|
|
d[1] = 1
|
|
d[1,] = 2
|
|
d[1,2] = 3
|
|
d[1,2,3] = 4
|
|
L = list(d)
|
|
L.sort()
|
|
self.assertEquals(str(L), '[1, (1,), (1, 2), (1, 2, 3)]')
|
|
|
|
def testAtoms(self):
|
|
### atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING
|
|
### dictmaker: test ':' test (',' test ':' test)* [',']
|
|
|
|
x = (1)
|
|
x = (1 or 2 or 3)
|
|
x = (1 or 2 or 3, 2, 3)
|
|
|
|
x = []
|
|
x = [1]
|
|
x = [1 or 2 or 3]
|
|
x = [1 or 2 or 3, 2, 3]
|
|
x = []
|
|
|
|
x = {}
|
|
x = {'one': 1}
|
|
x = {'one': 1,}
|
|
x = {'one' or 'two': 1 or 2}
|
|
x = {'one': 1, 'two': 2}
|
|
x = {'one': 1, 'two': 2,}
|
|
x = {'one': 1, 'two': 2, 'three': 3, 'four': 4, 'five': 5, 'six': 6}
|
|
|
|
x = `x`
|
|
x = `1 or 2 or 3`
|
|
self.assertEqual(`1,2`, '(1, 2)')
|
|
|
|
x = x
|
|
x = 'x'
|
|
x = 123
|
|
|
|
### exprlist: expr (',' expr)* [',']
|
|
### testlist: test (',' test)* [',']
|
|
# These have been exercised enough above
|
|
|
|
def testClassdef(self):
|
|
# 'class' NAME ['(' [testlist] ')'] ':' suite
|
|
class B: pass
|
|
class B2(): pass
|
|
class C1(B): pass
|
|
class C2(B): pass
|
|
class D(C1, C2, B): pass
|
|
class C:
|
|
def meth1(self): pass
|
|
def meth2(self, arg): pass
|
|
def meth3(self, a1, a2): pass
|
|
|
|
def testListcomps(self):
|
|
# list comprehension tests
|
|
nums = [1, 2, 3, 4, 5]
|
|
strs = ["Apple", "Banana", "Coconut"]
|
|
spcs = [" Apple", " Banana ", "Coco nut "]
|
|
|
|
self.assertEqual([s.strip() for s in spcs], ['Apple', 'Banana', 'Coco nut'])
|
|
self.assertEqual([3 * x for x in nums], [3, 6, 9, 12, 15])
|
|
self.assertEqual([x for x in nums if x > 2], [3, 4, 5])
|
|
self.assertEqual([(i, s) for i in nums for s in strs],
|
|
[(1, 'Apple'), (1, 'Banana'), (1, 'Coconut'),
|
|
(2, 'Apple'), (2, 'Banana'), (2, 'Coconut'),
|
|
(3, 'Apple'), (3, 'Banana'), (3, 'Coconut'),
|
|
(4, 'Apple'), (4, 'Banana'), (4, 'Coconut'),
|
|
(5, 'Apple'), (5, 'Banana'), (5, 'Coconut')])
|
|
self.assertEqual([(i, s) for i in nums for s in [f for f in strs if "n" in f]],
|
|
[(1, 'Banana'), (1, 'Coconut'), (2, 'Banana'), (2, 'Coconut'),
|
|
(3, 'Banana'), (3, 'Coconut'), (4, 'Banana'), (4, 'Coconut'),
|
|
(5, 'Banana'), (5, 'Coconut')])
|
|
self.assertEqual([(lambda a:[a**i for i in range(a+1)])(j) for j in range(5)],
|
|
[[1], [1, 1], [1, 2, 4], [1, 3, 9, 27], [1, 4, 16, 64, 256]])
|
|
|
|
def test_in_func(l):
|
|
return [None < x < 3 for x in l if x > 2]
|
|
|
|
self.assertEqual(test_in_func(nums), [False, False, False])
|
|
|
|
def test_nested_front():
|
|
self.assertEqual([[y for y in [x, x + 1]] for x in [1,3,5]],
|
|
[[1, 2], [3, 4], [5, 6]])
|
|
|
|
test_nested_front()
|
|
|
|
check_syntax_error(self, "[i, s for i in nums for s in strs]")
|
|
check_syntax_error(self, "[x if y]")
|
|
|
|
suppliers = [
|
|
(1, "Boeing"),
|
|
(2, "Ford"),
|
|
(3, "Macdonalds")
|
|
]
|
|
|
|
parts = [
|
|
(10, "Airliner"),
|
|
(20, "Engine"),
|
|
(30, "Cheeseburger")
|
|
]
|
|
|
|
suppart = [
|
|
(1, 10), (1, 20), (2, 20), (3, 30)
|
|
]
|
|
|
|
x = [
|
|
(sname, pname)
|
|
for (sno, sname) in suppliers
|
|
for (pno, pname) in parts
|
|
for (sp_sno, sp_pno) in suppart
|
|
if sno == sp_sno and pno == sp_pno
|
|
]
|
|
|
|
self.assertEqual(x, [('Boeing', 'Airliner'), ('Boeing', 'Engine'), ('Ford', 'Engine'),
|
|
('Macdonalds', 'Cheeseburger')])
|
|
|
|
def testGenexps(self):
|
|
# generator expression tests
|
|
g = ([x for x in range(10)] for x in range(1))
|
|
self.assertEqual(g.next(), [x for x in range(10)])
|
|
try:
|
|
g.next()
|
|
self.fail('should produce StopIteration exception')
|
|
except StopIteration:
|
|
pass
|
|
|
|
a = 1
|
|
try:
|
|
g = (a for d in a)
|
|
g.next()
|
|
self.fail('should produce TypeError')
|
|
except TypeError:
|
|
pass
|
|
|
|
self.assertEqual(list((x, y) for x in 'abcd' for y in 'abcd'), [(x, y) for x in 'abcd' for y in 'abcd'])
|
|
self.assertEqual(list((x, y) for x in 'ab' for y in 'xy'), [(x, y) for x in 'ab' for y in 'xy'])
|
|
|
|
a = [x for x in range(10)]
|
|
b = (x for x in (y for y in a))
|
|
self.assertEqual(sum(b), sum([x for x in range(10)]))
|
|
|
|
self.assertEqual(sum(x**2 for x in range(10)), sum([x**2 for x in range(10)]))
|
|
self.assertEqual(sum(x*x for x in range(10) if x%2), sum([x*x for x in range(10) if x%2]))
|
|
self.assertEqual(sum(x for x in (y for y in range(10))), sum([x for x in range(10)]))
|
|
self.assertEqual(sum(x for x in (y for y in (z for z in range(10)))), sum([x for x in range(10)]))
|
|
self.assertEqual(sum(x for x in [y for y in (z for z in range(10))]), sum([x for x in range(10)]))
|
|
self.assertEqual(sum(x for x in (y for y in (z for z in range(10) if True)) if True), sum([x for x in range(10)]))
|
|
self.assertEqual(sum(x for x in (y for y in (z for z in range(10) if True) if False) if True), 0)
|
|
check_syntax_error(self, "foo(x for x in range(10), 100)")
|
|
check_syntax_error(self, "foo(100, x for x in range(10))")
|
|
|
|
def testComprehensionSpecials(self):
|
|
# test for outmost iterable precomputation
|
|
x = 10; g = (i for i in range(x)); x = 5
|
|
self.assertEqual(len(list(g)), 10)
|
|
|
|
# This should hold, since we're only precomputing outmost iterable.
|
|
x = 10; t = False; g = ((i,j) for i in range(x) if t for j in range(x))
|
|
x = 5; t = True;
|
|
self.assertEqual([(i,j) for i in range(10) for j in range(5)], list(g))
|
|
|
|
# Grammar allows multiple adjacent 'if's in listcomps and genexps,
|
|
# even though it's silly. Make sure it works (ifelse broke this.)
|
|
self.assertEqual([ x for x in range(10) if x % 2 if x % 3 ], [1, 5, 7])
|
|
self.assertEqual(list(x for x in range(10) if x % 2 if x % 3), [1, 5, 7])
|
|
|
|
# verify unpacking single element tuples in listcomp/genexp.
|
|
self.assertEqual([x for x, in [(4,), (5,), (6,)]], [4, 5, 6])
|
|
self.assertEqual(list(x for x, in [(7,), (8,), (9,)]), [7, 8, 9])
|
|
|
|
def testIfElseExpr(self):
|
|
# Test ifelse expressions in various cases
|
|
def _checkeval(msg, ret):
|
|
"helper to check that evaluation of expressions is done correctly"
|
|
print x
|
|
return ret
|
|
|
|
self.assertEqual([ x() for x in lambda: True, lambda: False if x() ], [True])
|
|
self.assertEqual([ x() for x in (lambda: True, lambda: False) if x() ], [True])
|
|
self.assertEqual([ x(False) for x in (lambda x: False if x else True, lambda x: True if x else False) if x(False) ], [True])
|
|
self.assertEqual((5 if 1 else _checkeval("check 1", 0)), 5)
|
|
self.assertEqual((_checkeval("check 2", 0) if 0 else 5), 5)
|
|
self.assertEqual((5 and 6 if 0 else 1), 1)
|
|
self.assertEqual(((5 and 6) if 0 else 1), 1)
|
|
self.assertEqual((5 and (6 if 1 else 1)), 6)
|
|
self.assertEqual((0 or _checkeval("check 3", 2) if 0 else 3), 3)
|
|
self.assertEqual((1 or _checkeval("check 4", 2) if 1 else _checkeval("check 5", 3)), 1)
|
|
self.assertEqual((0 or 5 if 1 else _checkeval("check 6", 3)), 5)
|
|
self.assertEqual((not 5 if 1 else 1), False)
|
|
self.assertEqual((not 5 if 0 else 1), 1)
|
|
self.assertEqual((6 + 1 if 1 else 2), 7)
|
|
self.assertEqual((6 - 1 if 1 else 2), 5)
|
|
self.assertEqual((6 * 2 if 1 else 4), 12)
|
|
self.assertEqual((6 / 2 if 1 else 3), 3)
|
|
self.assertEqual((6 < 4 if 0 else 2), 2)
|
|
|
|
|
|
def test_main():
|
|
run_unittest(TokenTests, GrammarTests)
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|