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# -*- coding: utf-8 -*-
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"""Tests for the Cython magics extension."""
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import os
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import nose.tools as nt
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from IPython.testing import decorators as dec
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from IPython.utils import py3compat
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code = py3compat.str_to_unicode("""def f(x):
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return 2*x
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""")
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try:
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import Cython
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except:
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__test__ = False
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ip = get_ipython()
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def setup():
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ip.extension_manager.load_extension('cythonmagic')
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def test_cython_inline():
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ip.ex('a=10; b=20')
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result = ip.run_cell_magic('cython_inline','','return a+b')
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nt.assert_equal(result, 30)
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@dec.skip_win32
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def test_cython_pyximport():
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module_name = '_test_cython_pyximport'
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ip.run_cell_magic('cython_pyximport', module_name, code)
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ip.ex('g = f(10)')
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nt.assert_equal(ip.user_ns['g'], 20.0)
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ip.run_cell_magic('cython_pyximport', module_name, code)
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ip.ex('h = f(-10)')
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nt.assert_equal(ip.user_ns['h'], -20.0)
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try:
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os.remove(module_name+'.pyx')
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except OSError:
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pass
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def test_cython():
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ip.run_cell_magic('cython', '', code)
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ip.ex('g = f(10)')
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nt.assert_equal(ip.user_ns['g'], 20.0)
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def test_cython_name():
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# The Cython module named 'mymodule' defines the function f.
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ip.run_cell_magic('cython', '--name=mymodule', code)
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# This module can now be imported in the interactive namespace.
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ip.ex('import mymodule; g = mymodule.f(10)')
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nt.assert_equal(ip.user_ns['g'], 20.0)
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@dec.skip_win32
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def test_extlibs():
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code = py3compat.str_to_unicode("""
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from libc.math cimport sin
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x = sin(0.0)
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""")
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ip.user_ns['x'] = 1
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ip.run_cell_magic('cython', '-l m', code)
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nt.assert_equal(ip.user_ns['x'], 0)
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