Add mongodb and imap tests for dal

Added mongodb uri string for tests

.travis.yml

@@ -11,6 +11,8 @@ env:
   - DB=mysql://root:@localhost/test_w2p
   - DB=postgres://postgres:@localhost/test_w2p
   - DB=google:datastore
+  - DB=mongodb://mongodb:mongodb@localhost/test_w2p
+  - DB=imap://imap:imap@localhost:993
 before_script:
   - if [[ $TRAVIS_PYTHON_VERSION != '2.7' ]]; then pip install unittest2; fi
   - if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then pip install coverage; fi;
@@ -29,6 +31,9 @@ before_script:
   - if [[ $DB == google* ]]; then unzip -q google_appengine_$GAERELEASE.zip; fi
   - if [[ $DB == google* ]]; then mv -f ./google_appengine/google ./google; fi
 
+  - if [[ $DB == mongodb* ]]; then pip install pymongo; fi
+  - if [[ $DB == mongodb* ]]; then mongo test_w2p --eval 'db.addUser("mongodb", "mongodb");'; fi
+
   #Temporal solution to travis issue #155
   - sudo chmod 777 /dev/shm
   - sudo rm -rf /dev/shm && sudo ln -s /run/shm /dev/shm
@@ -43,6 +48,7 @@ matrix:
     - python: '2.6'
       env: DB=google:datastore
 
+
 script: export COVERAGE_PROCESS_START=gluon/tests/coverage.ini; ./web2py.py --run_system_tests --with_coverage
 after_success:
   - if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then coverage combine; fi
@@ -51,3 +57,5 @@ after_success:
 notifications:
   email: true
 
+services: mongodb
+