Task: Do not allow starting a Task which has already been started

diff --git a/tasklib/task.py b/tasklib/task.py
index 1121988249f3745264f3c588a69c9cee6517fd03..9af111b06ddc8f45cf7dbfbe34fa4f64453195ca 100644 (file)
--- a/tasklib/task.py
+++ b/tasklib/task.py
@@ -421,6 +421,12 @@ class Task(TaskResource):
         """
         pass
 
+    class ActiveTask(Exception):
+        """
+        Raised when the operation cannot be performed on the active task.
+        """
+        pass
+
     class InactiveTask(Exception):
         """
         Raised when the operation cannot be performed on an inactive task.
@@ -600,6 +606,8 @@ class Task(TaskResource):
             raise Task.CompletedTask("Cannot start a completed task")
         elif self.deleted:
             raise Task.DeletedTask("Deleted task cannot be started")
+        elif self.active:
+            raise Task.ActiveTask("Task is already active")
 
         self.warrior.execute_command([self['uuid'], 'start'])