| # Licensed under a 3-clause BSD style license - see LICENSE.rst | |
| import sys | |
| import traceback | |
| import pytest | |
| from astropy.utils.codegen import make_function_with_signature | |
| def test_make_function_with_signature_lineno(): | |
| """ | |
| Tests that a function made with ``make_function_with_signature`` is give | |
| the correct line number into the module it was created from (i.e. the line | |
| ``make_function_with_signature`` was called from). | |
| """ | |
| def crashy_function(*args, **kwargs): | |
| 1 / 0 | |
| # Make a wrapper around this function with the signature: | |
| # crashy_function(a, b) | |
| # Note: the signature is not really relevant to this test | |
| wrapped = make_function_with_signature(crashy_function, ('a', 'b')) | |
| line = """ | |
| wrapped = make_function_with_signature(crashy_function, ('a', 'b')) | |
| """.strip() | |
| try: | |
| wrapped(1, 2) | |
| except Exception: | |
| exc_cls, exc, tb = sys.exc_info() | |
| assert exc_cls is ZeroDivisionError | |
| # The *last* line in the traceback should be the 1 / 0 line in | |
| # crashy_function; the next line up should be the line that the | |
| # make_function_with_signature call was one | |
| tb_lines = traceback.format_tb(tb) | |
| assert '1 / 0' in tb_lines[-1] | |
| else: | |
| pytest.fail('This should have caused an exception') | |