diff options
| -rw-r--r-- | Lib/test/test_keywordonlyarg.py | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/Lib/test/test_keywordonlyarg.py b/Lib/test/test_keywordonlyarg.py new file mode 100644 index 0000000..0ace785 --- /dev/null +++ b/Lib/test/test_keywordonlyarg.py @@ -0,0 +1,151 @@ +#!/usr/bin/env python + +"""Unit tests for the keyword only argument specified in PEP 3102.""" + +__author__ = "Jiwon Seo" +__email__ = "seojiwon at gmail dot com" + +import unittest +from test.test_support import run_unittest + +def posonly_sum(pos_arg1, *arg, **kwarg): + return pos_arg1 + sum(arg) + sum(kwarg.values()) +def keywordonly_sum(*, k1=0, k2): + return k1 + k2 +def keywordonly_nodefaults_sum(*, k1, k2): + return k1 + k2 +def keywordonly_and_kwarg_sum(*, k1, k2, **kwarg): + return k1 + k2 + sum(kwarg.values()) +def mixedargs_sum(a, b=0, *arg, k1, k2=0): + return a + b + k1 + k2 + sum(arg) +def mixedargs_sum2(a, b=0, *arg, k1, k2=0, **kwargs): + return a + b + k1 + k2 + sum(arg) + sum(kwargs.values()) + +def sortnum(*nums, reverse=False): + return sorted(list(nums), reverse=reverse) + +def sortwords(*words, reverse=False, **kwargs): + return sorted(list(words), reverse=reverse) + +class Foo: + def __init__(self, *, k1, k2=0): + self.k1 = k1 + self.k2 = k2 + def set(self, p1, *, k1, k2): + self.k1 = k1 + self.k2 = k2 + def sum(self): + return self.k1 + self.k2 + +class KeywordOnlyArgTestCase(unittest.TestCase): + def assertRaisesSyntaxError(self, codestr): + def shouldRaiseSyntaxError(s): + compile(s, "<test>", "single") + self.assertRaises(SyntaxError, shouldRaiseSyntaxError, codestr) + + def testSyntaxErrorForFunctionDefinition(self): + self.assertRaisesSyntaxError("def f(p, *):\n pass\n") + self.assertRaisesSyntaxError("def f(p1, *, p1=100):\n pass\n") + self.assertRaisesSyntaxError("def f(p1, *k1, k1=100):\n pass\n") + self.assertRaisesSyntaxError("def f(p1, *, k1, k1=100):\n pass\n") + self.assertRaisesSyntaxError("def f(p1, *, k1, **k1):\n pass\n") + self.assertRaisesSyntaxError("def f(p1, *, None, **k1):\n pass\n") + self.assertRaisesSyntaxError("def f(p, *, (k1, k2), **kw):\n pass\n") + + def testSyntaxForManyArguments(self): + fundef = "def f(" + for i in range(255): + fundef += "i%d, "%i + fundef += "*, key=100):\n pass\n" + self.assertRaisesSyntaxError(fundef) + + fundef2 = "def foo(i,*," + for i in range(255): + fundef2 += "i%d, "%i + fundef2 += "lastarg):\n pass\n" + self.assertRaisesSyntaxError(fundef2) + + # exactly 255 arguments, should compile ok + fundef3 = "def f(i,*," + for i in range(253): + fundef3 += "i%d, "%i + fundef3 += "lastarg):\n pass\n" + compile(fundef3, "<test>", "single") + + def testSyntaxErrorForFunctionCall(self): + self.assertRaisesSyntaxError("f(p, k=1, p2)") + self.assertRaisesSyntaxError("f(p, *(1,2), k1=100)") + + def testRaiseErrorFuncallWithUnexpectedKeywordArgument(self): + self.assertRaises(TypeError, keywordonly_sum, ()) + self.assertRaises(TypeError, keywordonly_nodefaults_sum, ()) + self.assertRaises(TypeError, Foo, ()) + try: + keywordonly_sum(k2=100, non_existing_arg=200) + self.fail("should raise TypeError") + except TypeError: + pass + try: + keywordonly_nodefaults_sum(k2=2) + self.fail("should raise TypeError") + except TypeError: + pass + + def testFunctionCall(self): + self.assertEquals(1, posonly_sum(1)) + self.assertEquals(1+2, posonly_sum(1,**{"2":2})) + self.assertEquals(1+2+3, posonly_sum(1,*(2,3))) + self.assertEquals(1+2+3+4, posonly_sum(1,*(2,3),**{"4":4})) + + self.assertEquals(1, keywordonly_sum(k2=1)) + self.assertEquals(1+2, keywordonly_sum(k1=1, k2=2)) + + self.assertEquals(1+2, keywordonly_and_kwarg_sum(k1=1, k2=2)) + self.assertEquals(1+2+3, keywordonly_and_kwarg_sum(k1=1, k2=2, k3=3)) + self.assertEquals(1+2+3+4, + keywordonly_and_kwarg_sum(k1=1, k2=2, + **{"a":3,"b":4})) + + self.assertEquals(1+2, mixedargs_sum(1, k1=2)) + self.assertEquals(1+2+3, mixedargs_sum(1, 2, k1=3)) + self.assertEquals(1+2+3+4, mixedargs_sum(1, 2, k1=3, k2=4)) + self.assertEquals(1+2+3+4+5, mixedargs_sum(1, 2, 3, k1=4, k2=5)) + + self.assertEquals(1+2, mixedargs_sum2(1, k1=2)) + self.assertEquals(1+2+3, mixedargs_sum2(1, 2, k1=3)) + self.assertEquals(1+2+3+4, mixedargs_sum2(1, 2, k1=3, k2=4)) + self.assertEquals(1+2+3+4+5, mixedargs_sum2(1, 2, 3, k1=4, k2=5)) + self.assertEquals(1+2+3+4+5+6, + mixedargs_sum2(1, 2, 3, k1=4, k2=5, k3=6)) + self.assertEquals(1+2+3+4+5+6, + mixedargs_sum2(1, 2, 3, k1=4, **{'k2':5, 'k3':6})) + + self.assertEquals(1, Foo(k1=1).sum()) + self.assertEquals(1+2, Foo(k1=1,k2=2).sum()) + + self.assertEquals([1,2,3], sortnum(3,2,1)) + self.assertEquals([3,2,1], sortnum(1,2,3, reverse=True)) + + self.assertEquals(['a','b','c'], sortwords('a','c','b')) + self.assertEquals(['c','b','a'], sortwords('a','c','b', reverse=True)) + self.assertEquals(['c','b','a'], + sortwords('a','c','b', reverse=True, ignore='ignore')) + + def testKwDefaults(self): + def foo(p1,p2=0, *, k1, k2=0): + return p1 + p2 + k1 + k2 + + self.assertEquals(2, foo.func_code.co_kwonlyargcount) + self.assertEquals({"k2":0}, foo.func_kwdefaults) + foo.func_kwdefaults = {"k1":0} + try: + foo(1,k1=10) + self.fail("func_kwdefaults is not properly changed") + except TypeError: + pass + +def test_main(): + run_unittest(KeywordOnlyArgTestCase) + +if __name__ == "__main__": + test_main() |