nicer ver decorators + only test $minDistance in v3.0

tests/utils.py

@@ -32,22 +32,35 @@ def get_mongodb_version():
     """
     return get_connection().server_info()['versionArray']
 
-
-def skip_older_mongodb(f):
-    """Raise a SkipTest exception with a given message if we're working
-    with MongoDB version lower than v2.6.
+def _decorated_with_ver_requirement(func, ver_tuple):
+    """Return a given function decorated with the version requirement
+    for a particular MongoDB version tuple.
     """
     def _inner(*args, **kwargs):
         mongodb_ver = get_mongodb_version()
-        if mongodb_ver[0] == 2 and mongodb_ver[1] < 6:
-            raise SkipTest('Need MongoDB v2.6+')
-        return f(*args, **kwargs)
+        if mongodb_ver >= ver_tuple:
+            return func(*args, **kwargs)
 
-    _inner.__name__ = f.__name__
-    _inner.__doc__ = f.__doc__
+        raise SkipTest('Needs MongoDB v{}+'.format(
+            '.'.join([str(v) for v in ver_tuple])
+        ))
+
+    _inner.__name__ = func.__name__
+    _inner.__doc__ = func.__doc__
 
     return _inner
 
+def needs_mongodb_v26(func):
+    """Raise a SkipTest exception if we're working with MongoDB version
+    lower than v2.6.
+    """
+    return _decorated_with_ver_requirement(func, (2, 6))
+
+def needs_mongodb_v3(func):
+    """Raise a SkipTest exception if we're working with MongoDB version
+    lower than v3.0.
+    """
+    return _decorated_with_ver_requirement(func, (3, 0))
 
 def skip_pymongo3(f):
     """Raise a SkipTest exception if we're running a test against