Fix rendering and representation of errors

- Error are sent as list
- Error are None if answer is fully correct
- Error is rendered as in grade user and code questions as neat CSS divs
- Fix corresponding test cases
- Fix get_question answers in models.py

1 files changed, 2 insertions, 2 deletions

diff --git a/yaksh/bash_code_evaluator.py b/yaksh/bash_code_evaluator.py
index 1e6fc9c..975af82 100644
--- a/yaksh/bash_code_evaluator.py
+++ b/yaksh/bash_code_evaluator.py
@@ -104,7 +104,7 @@ class BashCodeEvaluator(BaseEvaluator):
             proc, stdnt_stdout, stdnt_stderr = ret
             if inst_stdout == stdnt_stdout:
                 mark_fraction = float(self.weight) if self.partial_grading else 0.0
-                return True, "Correct answer", mark_fraction
+                return True, None, mark_fraction
             else:
                 err = "Error: expected %s, got %s" % (inst_stderr,
                     stdnt_stderr
@@ -147,7 +147,7 @@ class BashCodeEvaluator(BaseEvaluator):
                     valid_answer = inst_stdout == stdnt_stdout
             if valid_answer and (num_lines == loop_count):
                 mark_fraction = float(self.weight) if self.partial_grading else 0.0
-                return True, "Correct answer", mark_fraction
+                return True, None, mark_fraction
             else:
                 err = ("Error:expected"
                     " {0}, got {1}").format(inst_stdout+inst_stderr,