summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_pep352.py
diff options
context:
space:
mode:
authorZachary Ware <zachary.ware@gmail.com>2016-09-09 19:55:37 (GMT)
committerZachary Ware <zachary.ware@gmail.com>2016-09-09 19:55:37 (GMT)
commit724f6a67f241f39394b15c419570920ebdfefacb (patch)
treedc795f9edbd8de67b4ad14fb4ed2ec45f9481ae2 /Lib/test/test_pep352.py
parenta0154c0f0ee38b1b8a05eac181a35c78ca1508f4 (diff)
downloadcpython-724f6a67f241f39394b15c419570920ebdfefacb.zip
cpython-724f6a67f241f39394b15c419570920ebdfefacb.tar.gz
cpython-724f6a67f241f39394b15c419570920ebdfefacb.tar.bz2
Rename test_pep####.py files
Diffstat (limited to 'Lib/test/test_pep352.py')
-rw-r--r--Lib/test/test_pep352.py183
1 files changed, 0 insertions, 183 deletions
diff --git a/Lib/test/test_pep352.py b/Lib/test/test_pep352.py
deleted file mode 100644
index 27d514f..0000000
--- a/Lib/test/test_pep352.py
+++ /dev/null
@@ -1,183 +0,0 @@
-import unittest
-import builtins
-import os
-from platform import system as platform_system
-
-
-class ExceptionClassTests(unittest.TestCase):
-
- """Tests for anything relating to exception objects themselves (e.g.,
- inheritance hierarchy)"""
-
- def test_builtins_new_style(self):
- self.assertTrue(issubclass(Exception, object))
-
- def verify_instance_interface(self, ins):
- for attr in ("args", "__str__", "__repr__"):
- self.assertTrue(hasattr(ins, attr),
- "%s missing %s attribute" %
- (ins.__class__.__name__, attr))
-
- def test_inheritance(self):
- # Make sure the inheritance hierarchy matches the documentation
- exc_set = set()
- for object_ in builtins.__dict__.values():
- try:
- if issubclass(object_, BaseException):
- exc_set.add(object_.__name__)
- except TypeError:
- pass
-
- inheritance_tree = open(os.path.join(os.path.split(__file__)[0],
- 'exception_hierarchy.txt'))
- try:
- superclass_name = inheritance_tree.readline().rstrip()
- try:
- last_exc = getattr(builtins, superclass_name)
- except AttributeError:
- self.fail("base class %s not a built-in" % superclass_name)
- self.assertIn(superclass_name, exc_set,
- '%s not found' % superclass_name)
- exc_set.discard(superclass_name)
- superclasses = [] # Loop will insert base exception
- last_depth = 0
- for exc_line in inheritance_tree:
- exc_line = exc_line.rstrip()
- depth = exc_line.rindex('-')
- exc_name = exc_line[depth+2:] # Slice past space
- if '(' in exc_name:
- paren_index = exc_name.index('(')
- platform_name = exc_name[paren_index+1:-1]
- exc_name = exc_name[:paren_index-1] # Slice off space
- if platform_system() != platform_name:
- exc_set.discard(exc_name)
- continue
- if '[' in exc_name:
- left_bracket = exc_name.index('[')
- exc_name = exc_name[:left_bracket-1] # cover space
- try:
- exc = getattr(builtins, exc_name)
- except AttributeError:
- self.fail("%s not a built-in exception" % exc_name)
- if last_depth < depth:
- superclasses.append((last_depth, last_exc))
- elif last_depth > depth:
- while superclasses[-1][0] >= depth:
- superclasses.pop()
- self.assertTrue(issubclass(exc, superclasses[-1][1]),
- "%s is not a subclass of %s" % (exc.__name__,
- superclasses[-1][1].__name__))
- try: # Some exceptions require arguments; just skip them
- self.verify_instance_interface(exc())
- except TypeError:
- pass
- self.assertIn(exc_name, exc_set)
- exc_set.discard(exc_name)
- last_exc = exc
- last_depth = depth
- finally:
- inheritance_tree.close()
- self.assertEqual(len(exc_set), 0, "%s not accounted for" % exc_set)
-
- interface_tests = ("length", "args", "str", "repr")
-
- def interface_test_driver(self, results):
- for test_name, (given, expected) in zip(self.interface_tests, results):
- self.assertEqual(given, expected, "%s: %s != %s" % (test_name,
- given, expected))
-
- def test_interface_single_arg(self):
- # Make sure interface works properly when given a single argument
- arg = "spam"
- exc = Exception(arg)
- results = ([len(exc.args), 1], [exc.args[0], arg],
- [str(exc), str(arg)],
- [repr(exc), exc.__class__.__name__ + repr(exc.args)])
- self.interface_test_driver(results)
-
- def test_interface_multi_arg(self):
- # Make sure interface correct when multiple arguments given
- arg_count = 3
- args = tuple(range(arg_count))
- exc = Exception(*args)
- results = ([len(exc.args), arg_count], [exc.args, args],
- [str(exc), str(args)],
- [repr(exc), exc.__class__.__name__ + repr(exc.args)])
- self.interface_test_driver(results)
-
- def test_interface_no_arg(self):
- # Make sure that with no args that interface is correct
- exc = Exception()
- results = ([len(exc.args), 0], [exc.args, tuple()],
- [str(exc), ''],
- [repr(exc), exc.__class__.__name__ + '()'])
- self.interface_test_driver(results)
-
-class UsageTests(unittest.TestCase):
-
- """Test usage of exceptions"""
-
- def raise_fails(self, object_):
- """Make sure that raising 'object_' triggers a TypeError."""
- try:
- raise object_
- except TypeError:
- return # What is expected.
- self.fail("TypeError expected for raising %s" % type(object_))
-
- def catch_fails(self, object_):
- """Catching 'object_' should raise a TypeError."""
- try:
- try:
- raise Exception
- except object_:
- pass
- except TypeError:
- pass
- except Exception:
- self.fail("TypeError expected when catching %s" % type(object_))
-
- try:
- try:
- raise Exception
- except (object_,):
- pass
- except TypeError:
- return
- except Exception:
- self.fail("TypeError expected when catching %s as specified in a "
- "tuple" % type(object_))
-
- def test_raise_new_style_non_exception(self):
- # You cannot raise a new-style class that does not inherit from
- # BaseException; the ability was not possible until BaseException's
- # introduction so no need to support new-style objects that do not
- # inherit from it.
- class NewStyleClass(object):
- pass
- self.raise_fails(NewStyleClass)
- self.raise_fails(NewStyleClass())
-
- def test_raise_string(self):
- # Raising a string raises TypeError.
- self.raise_fails("spam")
-
- def test_catch_non_BaseException(self):
- # Tryinng to catch an object that does not inherit from BaseException
- # is not allowed.
- class NonBaseException(object):
- pass
- self.catch_fails(NonBaseException)
- self.catch_fails(NonBaseException())
-
- def test_catch_BaseException_instance(self):
- # Catching an instance of a BaseException subclass won't work.
- self.catch_fails(BaseException())
-
- def test_catch_string(self):
- # Catching a string is bad.
- self.catch_fails("spam")
-
-
-if __name__ == '__main__':
- unittest.main()