1 files changed, 14 insertions, 1 deletions
diff --git a/rhumba.py b/rhumba.py
index 535b650..5940da0 100755
--- a/rhumba.py
+++ b/rhumba.py
@@ -41,7 +41,8 @@ class Testbed:
 
     @abc.abstractmethod
     def create_experiment(self, nodes, links):
-        return
+        raise Exception('create_experiment() not implemented')
+
 
 # Represents an emulab testbed info
 #
@@ -62,6 +63,7 @@ class EmulabTestbed:
         es.wait_until_nodes_up(self)
         es.complete_experiment_graph(self, nodes, links)
 
+
 class jFedTestbed:
     def __init__(self, exp_name, username, cert_file, jfed_jar, exp_hours = "2",
                  proj_name = "ARCFIRE", authority = "wall2.ilabt.iminds.be"):
@@ -76,6 +78,17 @@ class jFedTestbed:
     def create_experiment(self, nodes, links):
         js.create_experiment(self, nodes, links)
 
+
+# Fake testbed, useful for testing
+class FakeTestbed:
+    def __init__(self, exp_name, username, proj_name = "ARCFIRE",
+                 password = ""):
+        Testbed.__init__(self, exp_name, username, password, proj_name)
+
+    def create_experiment(self, nodes, links):
+        print("[Fake testbed] experiment swapped in")
+
+
 # Represents an interface on a node
 #
 # @name [string] interface name