added test cases for pyximport

tests/pyximport/pyximport_basic.srctree

+
+PYTHON -c "import basic_test; basic_test.test()"
+
+######## basic_test.py ########
+
+import os.path
+import pyximport
+
+pyximport.install(build_dir=os.path.join(os.path.dirname(__file__), "BUILD"))
+
+def test():
+    import mymodule
+    assert mymodule.test_string == "TEST"
+    assert not mymodule.__file__.rstrip('oc').endswith('.py'), mymodule.__file__
+
+######## mymodule.pyx ########
+
+test_string = "TEST"

tests/pyximport/pyximport_pyimport.srctree

+
+PYTHON -s -S -c "import pyimport_test; pyimport_test.test()"
+
+######## pyimport_test.py ########
+
+import os.path
+import pyximport
+
+# blacklist for speed
+import pyximport.pyxbuild, Cython.Compiler.Pipeline
+import distutils.core, distutils.ccompiler, distutils.command.build
+
+pyximport.install(pyximport=False, pyimport=True,
+                  build_dir=os.path.join(os.path.dirname(__file__), "BUILD"))
+
+def test():
+    import mymodule
+    assert mymodule.test_string == "TEST"
+    assert not mymodule.__file__.rstrip('oc').endswith('.py'), mymodule.__file__
+
+######## mymodule.py ########
+
+test_string = "TEST"