refactor tests as a CythonTest class

Cython/Build/Tests/TestIpythonMagic.py

@@ -2,69 +2,65 @@
 """Tests for the Cython magics extension."""
 
 import os
-import nose.tools as nt
-
-from IPython.testing import decorators as dec
-from IPython.utils import py3compat
-
-code = py3compat.str_to_unicode("""def f(x):
-    return 2*x
-""")
 
 try:
-    import Cython
+    from IPython.testing.globalipapp import get_ipython
+    from IPython.testing import decorators as dec
+    from IPython.utils import py3compat
 except:
     __test__ = False
 
-ip = get_ipython()
-
-
-def setup():
-    ip.extension_manager.load_extension('cythonmagic')
-
-
-def test_cython_inline():
-    ip.ex('a=10; b=20')
-    result = ip.run_cell_magic('cython_inline','','return a+b')
-    nt.assert_equal(result, 30)
+from Cython.TestUtils import CythonTest
 
-
-@dec.skip_win32
-def test_cython_pyximport():
-    module_name = '_test_cython_pyximport'
-    ip.run_cell_magic('cython_pyximport', module_name, code)
-    ip.ex('g = f(10)')
-    nt.assert_equal(ip.user_ns['g'], 20.0)
-    ip.run_cell_magic('cython_pyximport', module_name, code)
-    ip.ex('h = f(-10)')
-    nt.assert_equal(ip.user_ns['h'], -20.0)
-    try:
-        os.remove(module_name+'.pyx')
-    except OSError:
-        pass
-
-
-def test_cython():
-    ip.run_cell_magic('cython', '', code)
-    ip.ex('g = f(10)')
-    nt.assert_equal(ip.user_ns['g'], 20.0)
-
-
-def test_cython_name():
-    # The Cython module named 'mymodule' defines the function f.
-    ip.run_cell_magic('cython', '--name=mymodule', code)
-    # This module can now be imported in the interactive namespace.
-    ip.ex('import mymodule; g = mymodule.f(10)')
-    nt.assert_equal(ip.user_ns['g'], 20.0)
+ip = get_ipython()
+code = py3compat.str_to_unicode("""def f(x):
+    return 2*x
+""")
 
 
-@dec.skip_win32
-def test_extlibs():
-    code = py3compat.str_to_unicode("""
+class TestIPythonMagic(CythonTest):
+
+    def setUp(self):
+        CythonTest.setUp(self)
+        ip.extension_manager.load_extension('cython')
+
+    def test_cython_inline(self):
+        ip.ex('a=10; b=20')
+        result = ip.run_cell_magic('cython_inline', '', 'return a+b')
+        self.assertEqual(result, 30)
+
+    @dec.skip_win32
+    def test_cython_pyximport(self):
+        module_name = '_test_cython_pyximport'
+        ip.run_cell_magic('cython_pyximport', module_name, code)
+        ip.ex('g = f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+        ip.run_cell_magic('cython_pyximport', module_name, code)
+        ip.ex('h = f(-10)')
+        self.assertEqual(ip.user_ns['h'], -20.0)
+        try:
+            os.remove(module_name + '.pyx')
+        except OSError:
+            pass
+
+    def test_cython(self):
+        ip.run_cell_magic('cython', '', code)
+        ip.ex('g = f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+
+    def test_cython_name(self):
+        # The Cython module named 'mymodule' defines the function f.
+        ip.run_cell_magic('cython', '--name=mymodule', code)
+        # This module can now be imported in the interactive namespace.
+        ip.ex('import mymodule; g = mymodule.f(10)')
+        self.assertEqual(ip.user_ns['g'], 20.0)
+
+    @dec.skip_win32
+    def test_extlibs(self):
+        code = py3compat.str_to_unicode("""
 from libc.math cimport sin
 x = sin(0.0)
-    """)
-    ip.user_ns['x'] = 1
-    ip.run_cell_magic('cython', '-l m', code)
-    nt.assert_equal(ip.user_ns['x'], 0)
-    
+        """)
+        ip.user_ns['x'] = 1
+        ip.run_cell_magic('cython', '-l m', code)
+        self.assertEqual(ip.user_ns['x'], 0)