Added lettuce tests for string problems

lms/djangoapps/courseware/features/problems.feature

@@ -13,6 +13,7 @@ Feature: Answer choice problems
         | drop down         |
         | multiple choice   |
         | checkbox          |
+        | string            |
 
     Scenario: I can answer a problem incorrectly
         Given I am viewing a "<ProblemType>" problem
@@ -24,6 +25,7 @@ Feature: Answer choice problems
         | drop down         |
         | multiple choice   |
         | checkbox          |
+        | string            |
 
     Scenario: I can submit a blank answer
         Given I am viewing a "<ProblemType>" problem
@@ -35,6 +37,7 @@ Feature: Answer choice problems
         | drop down         |
         | multiple choice   |
         | checkbox          |
+        | string            |
 
 
     Scenario: I can reset a problem
@@ -51,3 +54,5 @@ Feature: Answer choice problems
         | multiple choice   | incorrect     |
         | checkbox          | correct       |
         | checkbox          | incorrect     |
+        | string            | correct       |
+        | string            | incorrect     |

lms/djangoapps/courseware/features/problems.py

@@ -5,7 +5,8 @@ from common import i_am_registered_for_the_course
 
 problem_urls = { 'drop down': '/courses/edX/model_course/2013_Spring/courseware/Problem_Components/Drop_Down_Problems',
                 'multiple choice': '/courses/edX/model_course/2013_Spring/courseware/Problem_Components/Multiple_Choice_Problems',
-                'checkbox': '/courses/edX/model_course/2013_Spring/courseware/Problem_Components/Checkbox_Problems', }
+                'checkbox': '/courses/edX/model_course/2013_Spring/courseware/Problem_Components/Checkbox_Problems', 
+                'string': '/courses/edX/model_course/2013_Spring/courseware/Problem_Components/String_Problems' }
 
 @step(u'I am viewing a "([^"]*)" problem')
 def view_problem(step, problem_type):
@@ -35,6 +36,11 @@ def answer_problem(step, problem_type, correctness):
         else:
             world.browser.find_by_css('#input_i4x-edX-model_course-problem-Checkbox_Problem_2_1_choice_3').check()
 
+    elif problem_type == 'string':
+        textfield = world.browser.find_by_css("input#input_i4x-edX-model_course-problem-String_Problem_2_1")
+        textvalue = 'correct string' if correctness == 'correct' else 'incorrect'
+        textfield.fill(textvalue)
+
     check_problem(step)
 
 @step(u'I check a problem')
@@ -65,10 +71,18 @@ def assert_answer_mark(step, problem_type, correctness):
                 # Two ways to be marked incorrect: either applying a 
                 # class to the label (marking a particular option)
                 # or applying a class to a span (marking the whole problem incorrect)
-                mark_classes = ['label.choicegroup_incorrect', 'label.incorrect']
+                mark_classes = ['label.choicegroup_incorrect', 'span.incorrect']
                 assert(world.browser.is_element_present_by_css(mark_classes[0], wait_time=4) or
                         world.browser.is_element_present_by_css(mark_classes[1], wait_time=4))
 
+    elif problem_type == "string":
+        if correctness == 'unanswered':
+            assert(world.browser.is_element_not_present_by_css('div.correct'))
+            assert(world.browser.is_element_not_present_by_css('div.incorrect'))
+        else:
+            mark_class = 'div.correct' if correctness == 'correct' else 'div.incorrect'
+            assert(world.browser.is_element_present_by_css(mark_class, wait_time=4))
+
     else:
         if correctness == 'unanswered':
             assert(world.browser.is_element_not_present_by_css('span.correct'))