chore(unittests) Improve performance of unit tests (#52)

Use mongomock rather than real mongodb - this improves speed and makes it easy and self contained to run all unit tests

By default, use 'plaintext' as password hash for unit tests. This halves the test time.

Thanks pahrohfit for the code in: pallets-eco/flask-security#811

.travis.yml

@@ -35,9 +35,6 @@ cache:
   - apt
   - pip
 
-services:
-  - mongodb
-
 env:
   - REQUIREMENTS=lowest
   - REQUIREMENTS=release

setup.py

@@ -14,21 +14,23 @@
 
 tests_require = [
     'Flask-CLI>=0.4.0',
-    'Flask-Mongoengine>=0.7.0',
+    'Flask-Mongoengine>=0.9.5',
     'Flask-Peewee>=0.6.5',
     'Flask-SQLAlchemy>=2.3',
     'bcrypt>=3.1.0',
     'check-manifest>=0.25',
     'coverage>=4.0',
     'isort>=4.2.2',
     'mock>=1.3.0',
-    'mongoengine>=0.10.0',
+    'mongoengine>=0.12.0',
+    'mongomock>=3.14.0',
     'msgcheck>=2.9',
     'pony>=0.7.4',
     'pydocstyle>=1.0.0',
     'pytest-cache>=1.0',
     'pytest-cov>=2.4.0',
     'pytest-flakes>=1.0.1',
+    'pytest-mongo>=1.2.1',
     'pytest-pep8>=1.0.6',
     'pytest>=3.3.0',
     'sqlalchemy>=1.1.0',

tests/conftest.py

@@ -51,6 +51,8 @@ def app(request):
     app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
 
     app.config['SECURITY_PASSWORD_SALT'] = 'salty'
+    # Make this plaintext for most tests - reduces unit test time by 50%
+    app.config['SECURITY_PASSWORD_HASH'] = 'plaintext'
 
     for opt in ['changeable', 'recoverable', 'registerable',
                 'trackable', 'passwordless', 'confirmable']:
@@ -154,7 +156,7 @@ def mongoengine_datastore(app):
     db_name = 'flask_security_test_%s' % str(time.time()).replace('.', '_')
     app.config['MONGODB_SETTINGS'] = {
         'db': db_name,
-        'host': 'localhost',
+        'host': 'mongomock://localhost',
         'port': 27017,
         'alias': db_name
     }