diff --git a/.coveragerc b/.coveragerc
index fef1089be..7b2c16820 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,9 +2,10 @@
 branch = True
 
 [report]
-omit = *contrib*, *tnetstring*, *platform*, *console*, *main.py
+show_missing = True
 include = *libmproxy*
 exclude_lines =
     pragma: nocover
     pragma: no cover
-    raise NotImplementedError()
\ No newline at end of file
+    raise NotImplementedError()
+omit = *contrib*, *tnetstring*, *platform*, *console*, *main.py
diff --git a/libmproxy/models/http.py b/libmproxy/models/http.py
index c0a2c55aa..5a83cb463 100644
--- a/libmproxy/models/http.py
+++ b/libmproxy/models/http.py
@@ -8,6 +8,7 @@ from libmproxy import utils
 from netlib import encoding
 from netlib.http import status_codes, Headers, Request, Response, CONTENT_MISSING
 from netlib.tcp import Address
+from netlib.utils import native
 from .. import version, stateobject
 from .flow import Flow
 
@@ -497,6 +498,8 @@ class decoded(object):
     def __init__(self, o):
         self.o = o
         ce = o.headers.get("content-encoding")
+        if ce:
+            ce = native(ce, "ascii", "ignore")
         if ce in encoding.ENCODINGS:
             self.ce = ce
         else:
@@ -504,7 +507,8 @@ class decoded(object):
 
     def __enter__(self):
         if self.ce:
-            self.o.decode()
+            if not self.o.decode():
+                self.ce = None
 
     def __exit__(self, type, value, tb):
         if self.ce:
diff --git a/test/test_proxy.py b/test/test_proxy.py
index 172613aa5..57ad606da 100644
--- a/test/test_proxy.py
+++ b/test/test_proxy.py
@@ -13,14 +13,10 @@ from netlib import http, tcp
 from netlib.http import http1
 
 
-class TestServerConnection:
-    def setUp(self):
-        self.d = test.Daemon()
-
-    def tearDown(self):
-        self.d.shutdown()
+class TestServerConnection(object):
 
     def test_simple(self):
+        self.d = test.Daemon()
         sc = ServerConnection((self.d.IFACE, self.d.port))
         sc.connect()
         f = tutils.tflow()
@@ -35,14 +31,17 @@ class TestServerConnection:
         assert self.d.last_log()
 
         sc.finish()
+        self.d.shutdown()
 
     def test_terminate_error(self):
+        self.d = test.Daemon()
         sc = ServerConnection((self.d.IFACE, self.d.port))
         sc.connect()
         sc.connection = mock.Mock()
         sc.connection.recv = mock.Mock(return_value=False)
         sc.connection.flush = mock.Mock(side_effect=TcpDisconnect)
         sc.finish()
+        self.d.shutdown()
 
     def test_repr(self):
         sc = tutils.tserver_conn()
diff --git a/test/test_server.py b/test/test_server.py
index 34ae46015..c81a2843d 100644
--- a/test/test_server.py
+++ b/test/test_server.py
@@ -158,7 +158,7 @@ class TcpMixin:
 
     def _tcpproxy_off(self):
         assert hasattr(self, "_tcpproxy_backup")
-        self.config.check_ignore = self._tcpproxy_backup
+        self.config.check_tcp = self._tcpproxy_backup
         del self._tcpproxy_backup
 
     def test_tcp(self):
diff --git a/test/tservers.py b/test/tservers.py
index c5256e53f..8e60df603 100644
--- a/test/tservers.py
+++ b/test/tservers.py
@@ -89,7 +89,7 @@ class ProxTestBase(object):
     masterclass = TestMaster
 
     @classmethod
-    def setupAll(cls):
+    def setup_class(cls):
         cls.server = libpathod.test.Daemon(
             ssl=cls.ssl,
             ssloptions=cls.ssloptions)
@@ -105,13 +105,15 @@ class ProxTestBase(object):
         cls.proxy.start()
 
     @classmethod
-    def teardownAll(cls):
-        shutil.rmtree(cls.cadir)
+    def teardown_class(cls):
+        # perf: we want to run tests in parallell
+        # should this ever cause an error, travis should catch it.
+        # shutil.rmtree(cls.cadir)
         cls.proxy.shutdown()
         cls.server.shutdown()
         cls.server2.shutdown()
 
-    def setUp(self):
+    def setup(self):
         self.master.clear_log()
         self.master.state.clear()
         self.server.clear_log()
@@ -185,8 +187,8 @@ class TransparentProxTest(ProxTestBase):
     resolver = TResolver
 
     @classmethod
-    def setupAll(cls):
-        super(TransparentProxTest, cls).setupAll()
+    def setup_class(cls):
+        super(TransparentProxTest, cls).setup_class()
 
         cls._resolver = mock.patch(
             "libmproxy.platform.resolver",
@@ -195,9 +197,9 @@ class TransparentProxTest(ProxTestBase):
         cls._resolver.start()
 
     @classmethod
-    def teardownAll(cls):
+    def teardown_class(cls):
         cls._resolver.stop()
-        super(TransparentProxTest, cls).teardownAll()
+        super(TransparentProxTest, cls).teardown_class()
 
     @classmethod
     def get_proxy_config(cls):
@@ -283,9 +285,9 @@ class ChainProxTest(ProxTestBase):
     n = 2
 
     @classmethod
-    def setupAll(cls):
+    def setup_class(cls):
         cls.chain = []
-        super(ChainProxTest, cls).setupAll()
+        super(ChainProxTest, cls).setup_class()
         for _ in range(cls.n):
             config = ProxyConfig(**cls.get_proxy_config())
             tmaster = cls.masterclass(config)
@@ -298,13 +300,13 @@ class ChainProxTest(ProxTestBase):
             **cls.get_proxy_config())
 
     @classmethod
-    def teardownAll(cls):
-        super(ChainProxTest, cls).teardownAll()
+    def teardown_class(cls):
+        super(ChainProxTest, cls).teardown_class()
         for proxy in cls.chain:
             proxy.shutdown()
 
-    def setUp(self):
-        super(ChainProxTest, self).setUp()
+    def setup(self):
+        super(ChainProxTest, self).setup()
         for proxy in self.chain:
             proxy.tmaster.clear_log()
             proxy.tmaster.state.clear()
diff --git a/test/tutils.py b/test/tutils.py
index 229b51a80..f1db7842d 100644
--- a/test/tutils.py
+++ b/test/tutils.py
@@ -18,7 +18,7 @@ from libmproxy.console.flowview import FlowView
 from libmproxy.console import ConsoleState
 
 
-def _SkipWindows():
+def _SkipWindows(*args):
     raise SkipTest("Skipped on Windows.")
 
 
@@ -96,18 +96,6 @@ def terr(content="error"):
     return err
 
 
-def tflowview(request_contents=None):
-    m = Mock()
-    cs = ConsoleState()
-    if request_contents is None:
-        flow = tflow()
-    else:
-        flow = tflow(req=netlib.tutils.treq(body=request_contents))
-
-    fv = FlowView(m, cs, flow)
-    return fv
-
-
 def get_body_line(last_displayed_body, line_nb):
     return last_displayed_body.contents()[line_nb + 2]
 
@@ -134,43 +122,7 @@ class MockParser(argparse.ArgumentParser):
         raise Exception(message)
 
 
-def raises(exc, obj, *args, **kwargs):
-    """
-        Assert that a callable raises a specified exception.
-
-        :exc An exception class or a string. If a class, assert that an
-        exception of this type is raised. If a string, assert that the string
-        occurs in the string representation of the exception, based on a
-        case-insenstivie match.
-
-        :obj A callable object.
-
-        :args Arguments to be passsed to the callable.
-
-        :kwargs Arguments to be passed to the callable.
-    """
-    try:
-        obj(*args, **kwargs)
-    except Exception as v:
-        if isinstance(exc, basestring):
-            if exc.lower() in str(v).lower():
-                return
-            else:
-                raise AssertionError(
-                    "Expected %s, but caught %s" % (
-                        repr(str(exc)), v
-                    )
-                )
-        else:
-            if isinstance(v, exc):
-                return
-            else:
-                raise AssertionError(
-                    "Expected %s, but caught %s %s" % (
-                        exc.__name__, v.__class__.__name__, str(v)
-                    )
-                )
-    raise AssertionError("No exception raised.")
+raises = netlib.tutils.raises
 
 
 @contextmanager