Allow multiline Assertion Errors for python

app/assets/javascripts/editor/editor.js.erb

@@ -440,7 +440,7 @@ configureEditors: function () {
         let errorMessagesToShow = [];
         result.error_messages.forEach(function (item) {
             if (item) {
-              errorMessagesToShow.push(item)
+              errorMessagesToShow.push(item.replace(/\n/g, '<br>'))
             }
         })
 

lib/py_unit_adapter.rb

@@ -2,7 +2,8 @@ class PyUnitAdapter < TestingFrameworkAdapter
   COUNT_REGEXP = /Ran (\d+) test/
   FAILURES_REGEXP = /FAILED \(.*failures=(\d+).*\)/
   ERRORS_REGEXP = /FAILED \(.*errors=(\d+).*\)/
-  ASSERTION_ERROR_REGEXP = /AssertionError:\s(.*)/
+  # The regex below also catches new line separators.
+  ASSERTION_ERROR_REGEXP = /AssertionError:\s(.*)\s\s----------------------------------------------------------------------/s
 
   def self.framework_name
     'PyUnit'