Imported from SVN by Bitbucket

Paste-1.7.5.1-py2.6.egg/paste/debug/testserver.py

@@ -0,0 +1,93 @@
+# (c) 2005 Clark C. Evans
+# This module is part of the Python Paste Project and is released under
+# the MIT License: http://www.opensource.org/licenses/mit-license.php
+# This code was written with funding by http://prometheusresearch.com
+"""
+WSGI Test Server
+
+This builds upon paste.util.baseserver to customize it for regressions
+where using raw_interactive won't do.
+
+
+"""
+import time
+from paste.httpserver import *
+
+class WSGIRegressionServer(WSGIServer):
+    """
+    A threaded WSGIServer for use in regression testing.  To use this
+    module, call serve(application, regression=True), and then call
+    server.accept() to let it handle one request.  When finished, use
+    server.stop() to shutdown the server. Note that all pending requests
+    are processed before the server shuts down.
+    """
+    defaulttimeout = 10
+    def __init__ (self, *args, **kwargs):
+        WSGIServer.__init__(self, *args, **kwargs)
+        self.stopping = []
+        self.pending = []
+        self.timeout = self.defaulttimeout
+        # this is a local connection, be quick
+        self.socket.settimeout(2) 
+    def serve_forever(self):
+        from threading import Thread
+        thread = Thread(target=self.serve_pending)
+        thread.start()
+    def reset_expires(self):
+        if self.timeout:
+            self.expires = time.time() + self.timeout
+    def close_request(self, *args, **kwargs):
+        WSGIServer.close_request(self, *args, **kwargs)
+        self.pending.pop()
+        self.reset_expires()
+    def serve_pending(self):
+        self.reset_expires()
+        while not self.stopping or self.pending:
+            now = time.time()
+            if now > self.expires and self.timeout:
+                # note regression test doesn't handle exceptions in
+                # threads very well; so we just print and exit
+                print "\nWARNING: WSGIRegressionServer timeout exceeded\n"
+                break
+            if self.pending:
+                self.handle_request()
+            time.sleep(.1)
+    def stop(self):
+        """ stop the server (called from tester's thread) """
+        self.stopping.append(True)
+    def accept(self, count = 1):
+        """ accept another request (called from tester's thread) """
+        assert not self.stopping
+        [self.pending.append(True) for x in range(count)]
+
+def serve(application, host=None, port=None, handler=None):
+    server = WSGIRegressionServer(application, host, port, handler)
+    print "serving on %s:%s" % server.server_address
+    server.serve_forever()
+    return server
+
+if __name__ == '__main__':
+    import urllib
+    from paste.wsgilib import dump_environ
+    server = serve(dump_environ)
+    baseuri = ("http://%s:%s" % server.server_address)
+
+    def fetch(path):
+        # tell the server to humor exactly one more request
+        server.accept(1)
+        # not needed; but this is what you do if the server 
+        # may not respond in a resonable time period
+        import socket
+        socket.setdefaulttimeout(5)
+        # build a uri, fetch and return
+        return urllib.urlopen(baseuri + path).read()
+      
+    assert "PATH_INFO: /foo" in fetch("/foo")
+    assert "PATH_INFO: /womble" in fetch("/womble")
+
+    # ok, let's make one more final request...
+    server.accept(1)
+    # and then schedule a stop()
+    server.stop()
+    # and then... fetch it...
+    urllib.urlopen(baseuri)