diff options
Diffstat (limited to 'tests/test_unit.py')
| -rw-r--r-- | tests/test_unit.py | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/tests/test_unit.py b/tests/test_unit.py index 317be2f..719bf04 100644 --- a/tests/test_unit.py +++ b/tests/test_unit.py @@ -7641,38 +7641,51 @@ class Test2_WithoutPackrat(ppt.TestParseResultsAsserts, TestCase): modder = Modifier() + # force an exception in the attached parse action + # integer has a parse action to convert to an int; + # this parse action should fail with a TypeError, since + # str.upper expects a str argument, not an int grammar = ppc.integer().addParseAction(modder.modify_upper) self_testcase_name = "tests.test_unit." + type(self).__name__ - # get Python version-specific TypeError str - try: - str.upper(1000) - except TypeError as te: - type_error_str = str(te) - try: grammar.parseString("1000") except Exception as e: + # extract the exception explanation explain_str = ParseException.explain_exception(e) print(explain_str) + explain_str_lines = explain_str.splitlines() + expected = [ - "TypeError: " + type_error_str, self_testcase_name, "pyparsing.core._WordRegex - integer", "tests.test_unit.Modifier", "pyparsing.results.ParseResults", ] + + # verify the list of names shown in the explain "stack" self.assertEqual( expected, - explain_str.splitlines()[-len(expected) :], - "invalid explain str", + explain_str_lines[-len(expected) :], + msg="invalid explain str", + ) + + # check type of raised exception matches explain output + # (actual exception text varies by Python version, and even + # by how the exception is raised, so we can only check the + # type name) + exception_line = explain_str_lines[-(len(expected) + 1)] + self.assertTrue( + exception_line.startswith("TypeError:"), + msg="unexpected exception line ({!r})".format(exception_line), ) def testMiscellaneousExceptionBits(self): self_testcase_name = "tests.test_unit." + type(self).__name__ + # force a parsing exception - match an integer against "ABC" try: pp.Word(pp.nums).parseString("ABC") except pp.ParseException as pe: |