Link program listing cards to detail pages

When program detail pages are enabled, cards on the listing page will link to their respective detail pages. Includes extensive cleanup of program listing tests. ECOM-4227.

openedx/core/djangoapps/programs/utils.py

@@ -6,6 +6,7 @@ import logging
 from django.core.urlresolvers import reverse
 from django.utils import timezone
 from django.utils.functional import cached_property
+from django.utils.text import slugify
 from opaque_keys.edx.keys import CourseKey
 import pytz
 
@@ -128,6 +129,26 @@ def get_programs_for_credentials(user, programs_credentials):
     return certificate_programs
 
 
+def get_program_detail_url(program, marketing_root):
+    """Construct the URL to be used when linking to program details.
+
+    Arguments:
+        program (dict): Representation of a program.
+        marketing_root (str): Root URL used to build links to XSeries marketing pages.
+
+    Returns:
+        str, a link to program details
+    """
+    if ProgramsApiConfig.current().show_program_details:
+        base = reverse('program_details_view', kwargs={'program_id': program['id']}).rstrip('/')
+        slug = slugify(program['name'])
+    else:
+        base = marketing_root.rstrip('/')
+        slug = program['marketing_slug']
+
+    return '{base}/{slug}'.format(base=base, slug=slug)
+
+
 def get_display_category(program):
     """ Given the program, return the category of the program for display
     Arguments: