def test_errors(self):
support.skipIfBCI(self)
# Test syntax restrictions - these are all compile-time errors:
#
for expr in ["1+2", "x[3]", "(1, 2)"]:
# Sanity check: is expr is a valid expression by itself?
compile(expr, "testexpr", "exec")
codestr = "@%s\ndef f(): pass" % expr
self.assertRaises(SyntaxError, compile, codestr, "test", "exec")
# You can't put multiple decorators on a single line:
#
self.assertRaises(SyntaxError, compile, "@f1 @f2\ndef f(): pass",
"test", "exec")
# Test runtime errors
def unimp(func):
raise NotImplementedError
context = dict(nullval=None, unimp=unimp)
for expr, exc in [("undef", NameError), ("nullval", TypeError),
("nullval.attr", AttributeError),
("unimp", NotImplementedError)]:
codestr = "@%s\ndef f(): pass\nassert f() is None" % expr
code = compile(codestr, "test", "exec")
self.assertRaises(exc, eval, code, context)
def test_string_in_loop_on_same_line(self):
support.skipIfBCI(self)
python2_print_str = 'for i in s: print i'
with self.assertRaises(SyntaxError) as context:
exec(python2_print_str)
self.assertIn('print(i)', str(context.exception))
def test_string_with_semicolon(self):
support.skipIfBCI(self)
python2_print_str = 'print p;'
with self.assertRaises(SyntaxError) as context:
exec(python2_print_str)
self.assertIn('print(p)', str(context.exception))
def test_string_with_excessive_whitespace(self):
support.skipIfBCI(self)
python2_print_str = 'print "Hello World", '
with self.assertRaises(SyntaxError) as context:
exec(python2_print_str)
self.assertIn('print("Hello World", end=" ")', str(context.exception))
def test_normal_string(self):
support.skipIfBCI(self)
python2_print_str = 'print "Hello World"'
with self.assertRaises(SyntaxError) as context:
exec(python2_print_str)
self.assertIn('print("Hello World")', str(context.exception))
def test_format_locals(self):
support.skipIfBCI(self)
def some_inner(k, v):
a = 1
b = 2
return traceback.StackSummary.extract(traceback.walk_stack(None),
capture_locals=True,
limit=1)
s = some_inner(3, 4)
self.assertEqual([
' File "%s", line %d, in some_inner\n'
' return traceback.StackSummary.extract(\n'
' a = 1\n'
' b = 2\n'
' k = 3\n'
' v = 4\n' % (__file__, some_inner.__code__.co_firstlineno + 3)
], s.format())