Math.trunc not supported by evaljs

[ypiguet-epfl]

In dukpy.evaljs, the math function Math.trunc raises the exception _dukpy.JSRuntimeError: TypeError: undefined not callable. Other math functions, such as Math.floor, work.

To reproduce in Python 3 (tested in 3.6.9):

>>> import dukpy
>>> print(dukpy.evaljs("Math.trunc(2.3)"))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/xxx/.local/lib/python3.6/site-packages/dukpy/evaljs.py", line 134, in evaljs
    return JSInterpreter().evaljs(code, **kwargs)
  File "/home/xxx/.local/lib/python3.6/site-packages/dukpy/evaljs.py", line 57, in evaljs
    res = _dukpy.eval_string(self, jscode, jsvars)
_dukpy.JSRuntimeError: TypeError: undefined not callable
        duk_js_call.c:776
        eval src/pyduktape.c:1 preventsyield
>>> print(dukpy.evaljs("Math.floor(2.3)"))
2

[webknjaz]

I'd recommend adding PRs with xfailing tests for such cases so there's an acceptance test in the tree whenever somebody gets around to fixing it.

[webknjaz]

You must be using some old version. I wrote a test and it succeeds on master.

[webknjaz]

https://github.com/amol-/dukpy/pull/63

[ypiguet-epfl]

I had installed the default version for pip:

$ python3 -m pip install --force-reinstall dukpy
Collecting dukpy
  Using cached https://files.pythonhosted.org/packages/92/a5/4bae803eb58ea342f18d73a42f8510ca4e0cc095856a32b8feca23d6445e/dukpy-0.2.3-cp36-cp36m-manylinux1_x86_64.whl
Installing collected packages: dukpy
Successfully installed dukpy-0.2.3

With the current version on github, installing with

$ python3 -m pip install --force-reinstall git+https://github.com/amol-/dukpy/

you're right, it works. Thank you very much.