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diff --git a/src/leap/bitmask/mail/testing/imap.py b/src/leap/bitmask/mail/testing/imap.py
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+++ b/src/leap/bitmask/mail/testing/imap.py
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+# -*- coding: utf-8 -*-
+# utils.py
+# Copyright (C) 2014, 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Common utilities for testing Soledad IMAP Server.
+"""
+from email import parser
+
+from mock import Mock
+from twisted.cred.checkers import ICredentialsChecker
+from twisted.cred.credentials import IUsernamePassword
+from twisted.cred.error import UnauthorizedLogin
+from twisted.cred.portal import Portal, IRealm
+from twisted.mail import imap4
+from twisted.internet import defer
+from twisted.protocols import loopback
+from twisted.python import log
+from zope.interface import implementer
+
+from leap.mail.adaptors import soledad as soledad_adaptor
+from leap.mail.imap.account import IMAPAccount
+from leap.mail.imap.server import LEAPIMAPServer
+from leap.mail.testing.common import SoledadTestMixin
+
+TEST_USER = "testuser@leap.se"
+TEST_PASSWD = "1234"
+
+
+#
+# Simple IMAP4 Client for testing
+#
+
+class SimpleClient(imap4.IMAP4Client):
+    """
+    A Simple IMAP4 Client to test our
+    Soledad-LEAPServer
+    """
+
+    def __init__(self, deferred, contextFactory=None):
+        imap4.IMAP4Client.__init__(self, contextFactory)
+        self.deferred = deferred
+        self.events = []
+
+    def serverGreeting(self, caps):
+        self.deferred.callback(None)
+
+    def modeChanged(self, writeable):
+        self.events.append(['modeChanged', writeable])
+        self.transport.loseConnection()
+
+    def flagsChanged(self, newFlags):
+        self.events.append(['flagsChanged', newFlags])
+        self.transport.loseConnection()
+
+    def newMessages(self, exists, recent):
+        self.events.append(['newMessages', exists, recent])
+        self.transport.loseConnection()
+
+#
+# Dummy credentials for tests
+#
+
+
+@implementer(IRealm)
+class TestRealm(object):
+
+    def __init__(self, account):
+        self._account = account
+
+    def requestAvatar(self, avatarId, mind, *interfaces):
+        avatar = self._account
+        return (imap4.IAccount, avatar,
+                getattr(avatar, 'logout', lambda: None))
+
+
+@implementer(ICredentialsChecker)
+class TestCredentialsChecker(object):
+
+    credentialInterfaces = (IUsernamePassword,)
+
+    userid = TEST_USER
+    password = TEST_PASSWD
+
+    def requestAvatarId(self, credentials):
+        username, password = credentials.username, credentials.password
+        d = self.checkTestCredentials(username, password)
+        d.addErrback(lambda f: defer.fail(UnauthorizedLogin()))
+        return d
+
+    def checkTestCredentials(self, username, password):
+        if username == self.userid and password == self.password:
+            return defer.succeed(username)
+        else:
+            return defer.fail(Exception("Wrong credentials"))
+
+
+class TestSoledadIMAPServer(LEAPIMAPServer):
+
+    def __init__(self, account, *args, **kw):
+
+        LEAPIMAPServer.__init__(self, *args, **kw)
+
+        realm = TestRealm(account)
+        portal = Portal(realm)
+        checker = TestCredentialsChecker()
+        self.checker = checker
+        self.portal = portal
+        portal.registerChecker(checker)
+
+
+class IMAP4HelperMixin(SoledadTestMixin):
+    """
+    MixIn containing several utilities to be shared across
+    different TestCases
+    """
+    serverCTX = None
+    clientCTX = None
+
+    def setUp(self):
+
+        soledad_adaptor.cleanup_deferred_locks()
+
+        USERID = TEST_USER
+
+        def setup_server(account):
+            self.server = TestSoledadIMAPServer(
+                account=account,
+                contextFactory=self.serverCTX)
+            self.server.theAccount = account
+
+            d_server_ready = defer.Deferred()
+            self.client = SimpleClient(
+                d_server_ready, contextFactory=self.clientCTX)
+            self.connected = d_server_ready
+
+        def setup_account(_):
+            self.parser = parser.Parser()
+
+            # XXX this should be fixed in soledad.
+            # Soledad sync makes trial block forever. The sync it's mocked to
+            # fix this problem. _mock_soledad_get_from_index can be used from
+            # the tests to provide documents.
+            # TODO see here, possibly related?
+            # -- http://www.pythoneye.com/83_20424875/
+            self._soledad.sync = Mock()
+
+            d = defer.Deferred()
+            self.acc = IMAPAccount(self._soledad, USERID, d=d)
+            return d
+
+        d = super(IMAP4HelperMixin, self).setUp()
+        d.addCallback(setup_account)
+        d.addCallback(setup_server)
+        return d
+
+    def tearDown(self):
+        SoledadTestMixin.tearDown(self)
+        del self._soledad
+        del self.client
+        del self.server
+        del self.connected
+
+    def _cbStopClient(self, ignore):
+        self.client.transport.loseConnection()
+
+    def _ebGeneral(self, failure):
+        self.client.transport.loseConnection()
+        self.server.transport.loseConnection()
+        if hasattr(self, 'function'):
+            log.err(failure, "Problem with %r" % (self.function,))
+
+    def loopback(self):
+        return loopback.loopbackAsync(self.server, self.client)