Add a WSGI adapter that lets us serve a WSGI app out of mitmproxy.

This commit adds:
    - A WSGI App adapter for mitmproxy
    - An app registry in the proxy instance that lets us link WSGI apps with
    (hostname, port) combinations.
    - Fixes for a number of bugs discovered while creating this feature.

2 files changed, 70 insertions, 0 deletions

diff --git a/test/test_flow.py b/test/test_flow.py
index 74cf79f8..c91c456b 100644
--- a/test/test_flow.py
+++ b/test/test_flow.py
@@ -1030,6 +1030,15 @@ class uODictCaseless(libpry.AutoTree):
     def setUp(self):
         self.od = flow.ODictCaseless()
 
+    def test_case_preservation(self):
+        self.od["Foo"] = ["1"]
+        assert "foo" in self.od
+        assert self.od.items()[0][0] == "Foo"
+        assert self.od.get("foo") == ["1"]
+        assert self.od.get("foo", [""]) == ["1"]
+        assert self.od.get("Foo", [""]) == ["1"]
+        assert self.od.get("xx", "yy") == "yy"
+
     def test_del(self):
         self.od.add("foo", 1)
         self.od.add("Foo", 2)
diff --git a/test/test_wsgi.py b/test/test_wsgi.py
new file mode 100644
index 00000000..f5f79f87
--- /dev/null
+++ b/test/test_wsgi.py
@@ -0,0 +1,61 @@
+import cStringIO
+import libpry
+from libmproxy import wsgi
+import tutils
+
+
+class TestApp:
+    def __init__(self):
+        self.called = False
+
+    def __call__(self, environ, start_response):
+        self.called = True
+        status = '200 OK'
+        response_headers = [('Content-type', 'text/plain')]
+        start_response(status, response_headers)
+        return ['Hello', ' world!\n']
+
+
+class uWSGIAdaptor(libpry.AutoTree):
+    def test_make_environ(self):
+        w = wsgi.WSGIAdaptor(None, "foo", 80)
+        assert w.make_environ(
+            tutils.treq(),
+            None
+        )
+
+    def test_serve(self):
+        ta = TestApp()
+        w = wsgi.WSGIAdaptor(ta, "foo", 80)
+        r = tutils.treq()
+        r.host = "foo"
+        r.port = 80
+
+        wfile = cStringIO.StringIO()
+        err = w.serve(r, wfile)
+        assert ta.called
+        assert not err
+
+        val = wfile.getvalue()
+        assert "Hello world" in val
+        assert "Server:" in val
+
+
+class uAppRegistry(libpry.AutoTree):
+    def test_add_get(self):
+        ar = wsgi.AppRegistry()
+        ar.add("foo", "domain", 80)
+
+        r = tutils.treq()
+        r.host = "domain"
+        r.port = 80
+        assert ar.get(r)
+
+        r.port = 81
+        assert not ar.get(r)
+
+
+tests = [
+    uWSGIAdaptor(),
+    uAppRegistry()
+]