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diff --git a/lib/python2.7/lib2to3/tests/data/py2_test_grammar.py b/lib/python2.7/lib2to3/tests/data/py2_test_grammar.py
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-# Python test set -- part 1, grammar.
-# This just tests whether the parser accepts them all.
-
-# NOTE: When you run this test as a script from the command line, you
-# get warnings about certain hex/oct constants. Since those are
-# issued by the parser, you can't suppress them by adding a
-# filterwarnings() call to this module. Therefore, to shut up the
-# regression test, the filterwarnings() call has been added to
-# regrtest.py.
-
-from test.test_support import run_unittest, check_syntax_error
-import unittest
-import sys
-# testing import *
-from sys import *
-
-class TokenTests(unittest.TestCase):
-
- def testBackslash(self):
- # Backslash means line continuation:
- x = 1 \
- + 1
- self.assertEquals(x, 2, 'backslash for line continuation')
-
- # Backslash does not means continuation in comments :\
- x = 0
- self.assertEquals(x, 0, 'backslash ending comment')
-
- def testPlainIntegers(self):
- self.assertEquals(0xff, 255)
- self.assertEquals(0377, 255)
- self.assertEquals(2147483647, 017777777777)
- # "0x" is not a valid literal
- self.assertRaises(SyntaxError, eval, "0x")
- from sys import maxint
- if maxint == 2147483647:
- self.assertEquals(-2147483647-1, -020000000000)
- # XXX -2147483648
- self.assert_(037777777777 > 0)
- self.assert_(0xffffffff > 0)
- for s in '2147483648', '040000000000', '0x100000000':
- try:
- x = eval(s)
- except OverflowError:
- self.fail("OverflowError on huge integer literal %r" % s)
- elif maxint == 9223372036854775807:
- self.assertEquals(-9223372036854775807-1, -01000000000000000000000)
- self.assert_(01777777777777777777777 > 0)
- self.assert_(0xffffffffffffffff > 0)
- for s in '9223372036854775808', '02000000000000000000000', \
- '0x10000000000000000':
- try:
- x = eval(s)
- except OverflowError:
- self.fail("OverflowError on huge integer literal %r" % s)
- else:
- self.fail('Weird maxint value %r' % maxint)
-
- def testLongIntegers(self):
- x = 0L
- x = 0l
- x = 0xffffffffffffffffL
- x = 0xffffffffffffffffl
- x = 077777777777777777L
- x = 077777777777777777l
- x = 123456789012345678901234567890L
- x = 123456789012345678901234567890l
-
- def testFloats(self):
- x = 3.14
- x = 314.
- x = 0.314
- # XXX x = 000.314
- x = .314
- x = 3e14
- x = 3E14
- x = 3e-14
- x = 3e+14
- x = 3.e14
- x = .3e14
- x = 3.1e4
-
- def testStringLiterals(self):
- x = ''; y = ""; self.assert_(len(x) == 0 and x == y)
- x = '\''; y = "'"; self.assert_(len(x) == 1 and x == y and ord(x) == 39)
- x = '"'; y = "\""; self.assert_(len(x) == 1 and x == y and ord(x) == 34)
- x = "doesn't \"shrink\" does it"
- y = 'doesn\'t "shrink" does it'
- self.assert_(len(x) == 24 and x == y)
- x = "does \"shrink\" doesn't it"
- y = 'does "shrink" doesn\'t it'
- self.assert_(len(x) == 24 and x == y)
- x = """
-The "quick"
-brown fox
-jumps over
-the 'lazy' dog.
-"""
- y = '\nThe "quick"\nbrown fox\njumps over\nthe \'lazy\' dog.\n'
- self.assertEquals(x, y)
- y = '''
-The "quick"
-brown fox
-jumps over
-the 'lazy' dog.
-'''
- self.assertEquals(x, y)
- y = "\n\
-The \"quick\"\n\
-brown fox\n\
-jumps over\n\
-the 'lazy' dog.\n\
-"
- self.assertEquals(x, y)
- y = '\n\
-The \"quick\"\n\
-brown fox\n\
-jumps over\n\
-the \'lazy\' dog.\n\
-'
- self.assertEquals(x, y)
-
-
-class GrammarTests(unittest.TestCase):
-
- # single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
- # XXX can't test in a script -- this rule is only used when interactive
-
- # file_input: (NEWLINE | stmt)* ENDMARKER
- # Being tested as this very moment this very module
-
- # expr_input: testlist NEWLINE
- # XXX Hard to test -- used only in calls to input()
-
- def testEvalInput(self):
- # testlist ENDMARKER
- x = eval('1, 0 or 1')
-
- def testFuncdef(self):
- ### 'def' NAME parameters ':' suite
- ### parameters: '(' [varargslist] ')'
- ### varargslist: (fpdef ['=' test] ',')* ('*' NAME [',' ('**'|'*' '*') NAME]
- ### | ('**'|'*' '*') NAME)
- ### | fpdef ['=' test] (',' fpdef ['=' test])* [',']
- ### fpdef: NAME | '(' fplist ')'
- ### fplist: fpdef (',' fpdef)* [',']
- ### arglist: (argument ',')* (argument | *' test [',' '**' test] | '**' test)
- ### argument: [test '='] test # Really [keyword '='] test
- def f1(): pass
- f1()
- f1(*())
- f1(*(), **{})
- def f2(one_argument): pass
- def f3(two, arguments): pass
- def f4(two, (compound, (argument, list))): pass
- def f5((compound, first), two): pass
- self.assertEquals(f2.func_code.co_varnames, ('one_argument',))
- self.assertEquals(f3.func_code.co_varnames, ('two', 'arguments'))
- if sys.platform.startswith('java'):
- self.assertEquals(f4.func_code.co_varnames,
- ('two', '(compound, (argument, list))', 'compound', 'argument',
- 'list',))
- self.assertEquals(f5.func_code.co_varnames,
- ('(compound, first)', 'two', 'compound', 'first'))
- else:
- self.assertEquals(f4.func_code.co_varnames,
- ('two', '.1', 'compound', 'argument', 'list'))
- self.assertEquals(f5.func_code.co_varnames,
- ('.0', 'two', 'compound', 'first'))
- def a1(one_arg,): pass
- def a2(two, args,): pass
- def v0(*rest): pass
- def v1(a, *rest): pass
- def v2(a, b, *rest): pass
- def v3(a, (b, c), *rest): return a, b, c, rest
-
- f1()
- f2(1)
- f2(1,)
- f3(1, 2)
- f3(1, 2,)
- f4(1, (2, (3, 4)))
- v0()
- v0(1)
- v0(1,)
- v0(1,2)
- v0(1,2,3,4,5,6,7,8,9,0)
- v1(1)
- v1(1,)
- v1(1,2)
- v1(1,2,3)
- v1(1,2,3,4,5,6,7,8,9,0)
- v2(1,2)
- v2(1,2,3)
- v2(1,2,3,4)
- v2(1,2,3,4,5,6,7,8,9,0)
- v3(1,(2,3))
- v3(1,(2,3),4)
- v3(1,(2,3),4,5,6,7,8,9,0)
-
- # ceval unpacks the formal arguments into the first argcount names;
- # thus, the names nested inside tuples must appear after these names.
- if sys.platform.startswith('java'):
- self.assertEquals(v3.func_code.co_varnames, ('a', '(b, c)', 'rest', 'b', 'c'))
- else:
- self.assertEquals(v3.func_code.co_varnames, ('a', '.1', 'rest', 'b', 'c'))
- self.assertEquals(v3(1, (2, 3), 4), (1, 2, 3, (4,)))
- def d01(a=1): pass
- d01()
- d01(1)
- d01(*(1,))
- d01(**{'a':2})
- def d11(a, b=1): pass
- d11(1)
- d11(1, 2)
- d11(1, **{'b':2})
- def d21(a, b, c=1): pass
- d21(1, 2)
- d21(1, 2, 3)
- d21(*(1, 2, 3))
- d21(1, *(2, 3))
- d21(1, 2, *(3,))
- d21(1, 2, **{'c':3})
- def d02(a=1, b=2): pass
- d02()
- d02(1)
- d02(1, 2)
- d02(*(1, 2))
- d02(1, *(2,))
- d02(1, **{'b':2})
- d02(**{'a': 1, 'b': 2})
- def d12(a, b=1, c=2): pass
- d12(1)
- d12(1, 2)
- d12(1, 2, 3)
- def d22(a, b, c=1, d=2): pass
- d22(1, 2)
- d22(1, 2, 3)
- d22(1, 2, 3, 4)
- def d01v(a=1, *rest): pass
- d01v()
- d01v(1)
- d01v(1, 2)
- d01v(*(1, 2, 3, 4))
- d01v(*(1,))
- d01v(**{'a':2})
- def d11v(a, b=1, *rest): pass
- d11v(1)
- d11v(1, 2)
- d11v(1, 2, 3)
- def d21v(a, b, c=1, *rest): pass
- d21v(1, 2)
- d21v(1, 2, 3)
- d21v(1, 2, 3, 4)
- d21v(*(1, 2, 3, 4))
- d21v(1, 2, **{'c': 3})
- def d02v(a=1, b=2, *rest): pass
- d02v()
- d02v(1)
- d02v(1, 2)
- d02v(1, 2, 3)
- d02v(1, *(2, 3, 4))
- d02v(**{'a': 1, 'b': 2})
- def d12v(a, b=1, c=2, *rest): pass
- d12v(1)
- d12v(1, 2)
- d12v(1, 2, 3)
- d12v(1, 2, 3, 4)
- d12v(*(1, 2, 3, 4))
- d12v(1, 2, *(3, 4, 5))
- d12v(1, *(2,), **{'c': 3})
- def d22v(a, b, c=1, d=2, *rest): pass
- d22v(1, 2)
- d22v(1, 2, 3)
- d22v(1, 2, 3, 4)
- d22v(1, 2, 3, 4, 5)
- d22v(*(1, 2, 3, 4))
- d22v(1, 2, *(3, 4, 5))
- d22v(1, *(2, 3), **{'d': 4})
- def d31v((x)): pass
- d31v(1)
- def d32v((x,)): pass
- d32v((1,))
-
- # keyword arguments after *arglist
- def f(*args, **kwargs):
- return args, kwargs
- self.assertEquals(f(1, x=2, *[3, 4], y=5), ((1, 3, 4),
- {'x':2, 'y':5}))
- self.assertRaises(SyntaxError, eval, "f(1, *(2,3), 4)")
- self.assertRaises(SyntaxError, eval, "f(1, x=2, *(3,4), x=5)")
-
- # Check ast errors in *args and *kwargs
- check_syntax_error(self, "f(*g(1=2))")
- check_syntax_error(self, "f(**g(1=2))")
-
- def testLambdef(self):
- ### lambdef: 'lambda' [varargslist] ':' test
- l1 = lambda : 0
- self.assertEquals(l1(), 0)
- l2 = lambda : a[d] # XXX just testing the expression
- l3 = lambda : [2 < x for x in [-1, 3, 0L]]
- self.assertEquals(l3(), [0, 1, 0])
- l4 = lambda x = lambda y = lambda z=1 : z : y() : x()
- self.assertEquals(l4(), 1)
- l5 = lambda x, y, z=2: x + y + z
- self.assertEquals(l5(1, 2), 5)
- self.assertEquals(l5(1, 2, 3), 6)
- check_syntax_error(self, "lambda x: x = 2")
- check_syntax_error(self, "lambda (None,): None")
-
- ### stmt: simple_stmt | compound_stmt
- # Tested below
-
- def testSimpleStmt(self):
- ### simple_stmt: small_stmt (';' small_stmt)* [';']
- x = 1; pass; del x
- def foo():
- # verify statements that end with semi-colons
- x = 1; pass; del x;
- foo()
-
- ### small_stmt: expr_stmt | print_stmt | pass_stmt | del_stmt | flow_stmt | import_stmt | global_stmt | access_stmt | exec_stmt
- # Tested below
-
- def testExprStmt(self):
- # (exprlist '=')* exprlist
- 1
- 1, 2, 3
- x = 1
- x = 1, 2, 3
- x = y = z = 1, 2, 3
- x, y, z = 1, 2, 3
- abc = a, b, c = x, y, z = xyz = 1, 2, (3, 4)
-
- check_syntax_error(self, "x + 1 = 1")
- check_syntax_error(self, "a + 1 = b + 2")
-
- def testPrintStmt(self):
- # 'print' (test ',')* [test]
- import StringIO
-
- # Can't test printing to real stdout without comparing output
- # which is not available in unittest.
- save_stdout = sys.stdout
- sys.stdout = StringIO.StringIO()
-
- print 1, 2, 3
- print 1, 2, 3,
- print
- print 0 or 1, 0 or 1,
- print 0 or 1
-
- # 'print' '>>' test ','
- print >> sys.stdout, 1, 2, 3
- print >> sys.stdout, 1, 2, 3,
- print >> sys.stdout
- print >> sys.stdout, 0 or 1, 0 or 1,
- print >> sys.stdout, 0 or 1
-
- # test printing to an instance
- class Gulp:
- def write(self, msg): pass
-
- gulp = Gulp()
- print >> gulp, 1, 2, 3
- print >> gulp, 1, 2, 3,
- print >> gulp
- print >> gulp, 0 or 1, 0 or 1,
- print >> gulp, 0 or 1
-
- # test print >> None
- def driver():
- oldstdout = sys.stdout
- sys.stdout = Gulp()
- try:
- tellme(Gulp())
- tellme()
- finally:
- sys.stdout = oldstdout
-
- # we should see this once
- def tellme(file=sys.stdout):
- print >> file, 'hello world'
-
- driver()
-
- # we should not see this at all
- def tellme(file=None):
- print >> file, 'goodbye universe'
-
- driver()
-
- self.assertEqual(sys.stdout.getvalue(), '''\
-1 2 3
-1 2 3
-1 1 1
-1 2 3
-1 2 3
-1 1 1
-hello world
-''')
- sys.stdout = save_stdout
-
- # syntax errors
- check_syntax_error(self, 'print ,')
- check_syntax_error(self, 'print >> x,')
-
- def testDelStmt(self):
- # 'del' exprlist
- abc = [1,2,3]
- x, y, z = abc
- xyz = x, y, z
-
- del abc
- del x, y, (z, xyz)
-
- def testPassStmt(self):
- # 'pass'
- pass
-
- # flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt
- # Tested below
-
- def testBreakStmt(self):
- # 'break'
- while 1: break
-
- def testContinueStmt(self):
- # 'continue'
- i = 1
- while i: i = 0; continue
-
- msg = ""
- while not msg:
- msg = "ok"
- try:
- continue
- msg = "continue failed to continue inside try"
- except:
- msg = "continue inside try called except block"
- if msg != "ok":
- self.fail(msg)
-
- msg = ""
- while not msg:
- msg = "finally block not called"
- try:
- continue
- finally:
- msg = "ok"
- if msg != "ok":
- self.fail(msg)
-
- def test_break_continue_loop(self):
- # This test warrants an explanation. It is a test specifically for SF bugs
- # #463359 and #462937. The bug is that a 'break' statement executed or
- # exception raised inside a try/except inside a loop, *after* a continue
- # statement has been executed in that loop, will cause the wrong number of
- # arguments to be popped off the stack and the instruction pointer reset to
- # a very small number (usually 0.) Because of this, the following test
- # *must* written as a function, and the tracking vars *must* be function
- # arguments with default values. Otherwise, the test will loop and loop.
-
- def test_inner(extra_burning_oil = 1, count=0):
- big_hippo = 2
- while big_hippo:
- count += 1
- try:
- if extra_burning_oil and big_hippo == 1:
- extra_burning_oil -= 1
- break
- big_hippo -= 1
- continue
- except:
- raise
- if count > 2 or big_hippo <> 1:
- self.fail("continue then break in try/except in loop broken!")
- test_inner()
-
- def testReturn(self):
- # 'return' [testlist]
- def g1(): return
- def g2(): return 1
- g1()
- x = g2()
- check_syntax_error(self, "class foo:return 1")
-
- def testYield(self):
- check_syntax_error(self, "class foo:yield 1")
-
- def testRaise(self):
- # 'raise' test [',' test]
- try: raise RuntimeError, 'just testing'
- except RuntimeError: pass
- try: raise KeyboardInterrupt
- except KeyboardInterrupt: pass
-
- def testImport(self):
- # 'import' dotted_as_names
- import sys
- import time, sys
- # 'from' dotted_name 'import' ('*' | '(' import_as_names ')' | import_as_names)
- from time import time
- from time import (time)
- # not testable inside a function, but already done at top of the module
- # from sys import *
- from sys import path, argv
- from sys import (path, argv)
- from sys import (path, argv,)
-
- def testGlobal(self):
- # 'global' NAME (',' NAME)*
- global a
- global a, b
- 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
-
- # Issue1920: "while 0" is optimized away,
- # ensure that the "else" clause is still present.
- x = 0
- while 0:
- x = 1
- else:
- x = 2
- self.assertEquals(x, 2)
-
- 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 [('as' | ',') expr]]
- try:
- 1/0
- except ZeroDivisionError:
- pass
- else:
- pass
- try: 1/0
- except EOFError: pass
- except TypeError as 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
- # decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
- # decorators: decorator+
- # decorated: decorators (classdef | funcdef)
- def class_decorator(x):
- x.decorated = True
- return x
- @class_decorator
- class G:
- pass
- self.assertEqual(G.decorated, True)
-
- 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 test_with_statement(self):
- class manager(object):
- def __enter__(self):
- return (1, 2)
- def __exit__(self, *args):
- pass
-
- with manager():
- pass
- with manager() as x:
- pass
- with manager() as (x, y):
- pass
- with manager(), manager():
- pass
- with manager() as x, manager() as y:
- pass
- with manager() as x, manager():
- pass
-
- 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()
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