diff options
Diffstat (limited to 'Lib/test/test_syntax.py')
-rw-r--r-- | Lib/test/test_syntax.py | 58 |
1 files changed, 40 insertions, 18 deletions
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py index b61debf..dc7a16d 100644 --- a/Lib/test/test_syntax.py +++ b/Lib/test/test_syntax.py @@ -86,13 +86,16 @@ SyntaxError: can't assign to literal (<doctest test.test_syntax[11]>, line 1) Traceback (most recent call last): SyntaxError: can't assign to operator (<doctest test.test_syntax[12]>, line 1) +>>> a if 1 else b = 1 +Traceback (most recent call last): +SyntaxError: can't assign to conditional expression (<doctest test.test_syntax[13]>, line 1) From compiler_complex_args(): >>> def f(None=1): ... pass Traceback (most recent call last): -SyntaxError: assignment to None (<doctest test.test_syntax[13]>, line 1) +SyntaxError: assignment to None (<doctest test.test_syntax[14]>, line 1) From ast_for_arguments(): @@ -100,22 +103,22 @@ From ast_for_arguments(): >>> def f(x, y=1, z): ... pass Traceback (most recent call last): -SyntaxError: non-default argument follows default argument (<doctest test.test_syntax[14]>, line 1) +SyntaxError: non-default argument follows default argument (<doctest test.test_syntax[15]>, line 1) >>> def f(x, None): ... pass Traceback (most recent call last): -SyntaxError: assignment to None (<doctest test.test_syntax[15]>, line 1) +SyntaxError: assignment to None (<doctest test.test_syntax[16]>, line 1) >>> def f(*None): ... pass Traceback (most recent call last): -SyntaxError: assignment to None (<doctest test.test_syntax[16]>, line 1) +SyntaxError: assignment to None (<doctest test.test_syntax[17]>, line 1) >>> def f(**None): ... pass Traceback (most recent call last): -SyntaxError: assignment to None (<doctest test.test_syntax[17]>, line 1) +SyntaxError: assignment to None (<doctest test.test_syntax[18]>, line 1) From ast_for_funcdef(): @@ -123,7 +126,7 @@ From ast_for_funcdef(): >>> def None(x): ... pass Traceback (most recent call last): -SyntaxError: assignment to None (<doctest test.test_syntax[18]>, line 1) +SyntaxError: assignment to None (<doctest test.test_syntax[19]>, line 1) From ast_for_call(): @@ -135,7 +138,7 @@ From ast_for_call(): [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> f(x for x in L, 1) Traceback (most recent call last): -SyntaxError: Generator expression must be parenthesized if not sole argument (<doctest test.test_syntax[22]>, line 1) +SyntaxError: Generator expression must be parenthesized if not sole argument (<doctest test.test_syntax[23]>, line 1) >>> f((x for x in L), 1) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] @@ -167,7 +170,7 @@ SyntaxError: Generator expression must be parenthesized if not sole argument (<d ... i244, i245, i246, i247, i248, i249, i250, i251, i252, ... i253, i254, i255) Traceback (most recent call last): -SyntaxError: more than 255 arguments (<doctest test.test_syntax[24]>, line 1) +SyntaxError: more than 255 arguments (<doctest test.test_syntax[25]>, line 1) The actual error cases counts positional arguments, keyword arguments, and generator expression arguments separately. This test combines the @@ -201,37 +204,37 @@ three. ... (x for x in i244), i245, i246, i247, i248, i249, i250, i251, ... i252=1, i253=1, i254=1, i255=1) Traceback (most recent call last): -SyntaxError: more than 255 arguments (<doctest test.test_syntax[25]>, line 1) +SyntaxError: more than 255 arguments (<doctest test.test_syntax[26]>, line 1) >>> f(lambda x: x[0] = 3) Traceback (most recent call last): -SyntaxError: lambda cannot contain assignment (<doctest test.test_syntax[26]>, line 1) +SyntaxError: lambda cannot contain assignment (<doctest test.test_syntax[27]>, line 1) The grammar accepts any test (basically, any expression) in the keyword slot of a call site. Test a few different options. >>> f(x()=2) Traceback (most recent call last): -SyntaxError: keyword can't be an expression (<doctest test.test_syntax[27]>, line 1) +SyntaxError: keyword can't be an expression (<doctest test.test_syntax[28]>, line 1) >>> f(a or b=1) Traceback (most recent call last): -SyntaxError: keyword can't be an expression (<doctest test.test_syntax[28]>, line 1) +SyntaxError: keyword can't be an expression (<doctest test.test_syntax[29]>, line 1) >>> f(x.y=1) Traceback (most recent call last): -SyntaxError: keyword can't be an expression (<doctest test.test_syntax[29]>, line 1) +SyntaxError: keyword can't be an expression (<doctest test.test_syntax[30]>, line 1) From ast_for_expr_stmt(): >>> (x for x in x) += 1 Traceback (most recent call last): -SyntaxError: augmented assignment to generator expression not possible (<doctest test.test_syntax[30]>, line 1) +SyntaxError: augmented assignment to generator expression not possible (<doctest test.test_syntax[31]>, line 1) >>> None += 1 Traceback (most recent call last): -SyntaxError: assignment to None (<doctest test.test_syntax[31]>, line 1) +SyntaxError: assignment to None (<doctest test.test_syntax[32]>, line 1) >>> f() += 1 Traceback (most recent call last): -SyntaxError: illegal expression for augmented assignment (<doctest test.test_syntax[32]>, line 1) +SyntaxError: illegal expression for augmented assignment (<doctest test.test_syntax[33]>, line 1) """ import re @@ -243,15 +246,18 @@ from test import test_support class SyntaxTestCase(unittest.TestCase): def _check_error(self, code, errtext, - filename="<testcase>", mode="exec"): + filename="<testcase>", mode="exec", subclass=None): """Check that compiling code raises SyntaxError with errtext. errtest is a regular expression that must be present in the - test of the exception raised. + test of the exception raised. If subclass is specified it + is the expected subclass of SyntaxError (e.g. IndentationError). """ try: compile(code, filename, mode) except SyntaxError, err: + if subclass and not isinstance(err, subclass): + self.fail("SyntaxError is not a %s" % subclass.__name__) mo = re.search(errtext, str(err)) if mo is None: self.fail("SyntaxError did not contain '%r'" % (errtext,)) @@ -290,6 +296,22 @@ class SyntaxTestCase(unittest.TestCase): :""") self._check_error(source, "nested scope") + def test_unexpected_indent(self): + self._check_error("foo()\n bar()\n", "unexpected indent", + subclass=IndentationError) + + def test_no_indent(self): + self._check_error("if 1:\nfoo()", "expected an indented block", + subclass=IndentationError) + + def test_bad_outdent(self): + self._check_error("if 1:\n foo()\n bar()", + "unindent does not match .* level", + subclass=IndentationError) + + def test_kwargs_last(self): + self._check_error("int(base=10, '2')", "non-keyword arg") + def test_main(): test_support.run_unittest(SyntaxTestCase) from test import test_syntax |