a first go at testing schmir's generate_standalone_pytest script and

making it work on python2.4-3.1 + jython.

--HG--
branch : trunk

conftest.py

@@ -63,3 +63,47 @@ def pytest_generate_tests(metafunc):
     for name, l in multi.kwargs.items():
         for val in l:
             metafunc.addcall(funcargs={name: val})
+
+# XXX copied from execnet's conftest.py - needs to be merged 
+winpymap = {
+    'python2.7': r'C:\Python27\python.exe',
+    'python2.6': r'C:\Python26\python.exe',
+    'python2.5': r'C:\Python25\python.exe',
+    'python2.4': r'C:\Python24\python.exe',
+    'python3.1': r'C:\Python31\python.exe',
+}
+
+def pytest_generate_tests(metafunc):
+    if 'anypython' in metafunc.funcargnames:
+        for name in ('python2.4', 'python2.5', 'python2.6', 
+                     'python2.7', 'python3.1', 'pypy-c', 'jython'):
+            metafunc.addcall(id=name, param=name)
+
+def getexecutable(name, cache={}):
+    try:
+        return cache[name]
+    except KeyError:
+        executable = py.path.local.sysfind(name)
+        if executable:
+            if name == "jython":
+                import subprocess
+                popen = subprocess.Popen([str(executable), "--version"], 
+                    universal_newlines=True, stderr=subprocess.PIPE)
+                out, err = popen.communicate()
+                if not err or "2.5" not in err:
+                    executable = None
+        cache[name] = executable
+        return executable
+
+def pytest_funcarg__anypython(request):
+    name = request.param
+    executable = getexecutable(name)
+    if executable is None:
+        if sys.platform == "win32":
+            executable = winpymap.get(name, None)
+            if executable:
+                executable = py.path.local(executable)
+                if executable.check():
+                    return executable
+        py.test.skip("no %s found" % (name,))
+    return executable