Test missing sprint information

features/scrum_master.feature

@@ -29,3 +29,10 @@ Feature: Scrum Master
      Then the sprint should be updated accordingly
       And the request should complete successfully
      
+  Scenario: Update sprint with no name
+    Given I am viewing the master backlog
+      And I want to edit the sprint named sprint 001
+      And I want to set the name of the sprint to an empty string
+     When I update the sprint
+     Then the server should return an update error
+     

features/step_definitions/_given_steps.rb

@@ -53,6 +53,7 @@ Given /^I set the (.+) of the story to (.+)$/ do |attribute, value|
 end
 
 Given /^I set the (.+) of the task to (.+)$/ do |attribute, value|
+  value = '' if value == 'an empty string'
   @task_params[attribute] = value
 end
 
@@ -72,6 +73,7 @@ Given /^I want to edit the sprint named (.+)$/ do |name|
 end
 
 Given /^I want to set the (.+) of the sprint to (.+)$/ do |attribute, value|
+  value = '' if value == "an empty string"
   @sprint_params[attribute] = value
 end
 

features/step_definitions/_then_steps.rb

@@ -52,6 +52,10 @@ Then /^the (\d+)(?:st|nd|rd|th) task for (.+) should be (.+)$/ do |position, sto
   story.children[position.to_i - 1].subject.should == task_subject
 end
 
+Then /^the server should return an update error$/ do
+  page.driver.response.status.should == 400
+end
+
 Then /^the sprint should be updated accordingly$/ do
   sprint = Sprint.find(@sprint_params['id'])