Fix: Fix limit function for grading table fetch function (#1190)

* fix: Fix limit functionality not working

* feat: Implement test for pagination

lib/cadet/assessments/assessments.ex

@@ -1985,7 +1985,7 @@ defmodule Cadet.Assessments do
         where: s.assessment_id in subquery(build_assessment_config_filter(params)),
         where: ^build_submission_filter(params),
         where: ^build_course_registration_filter(params, grader),
-        limit: ^params[:limit],
+        limit: ^params[:page_size],
         offset: ^params[:offset],
         select: %{
           id: s.id,

test/cadet/assessments/assessments_test.exs

@@ -2210,6 +2210,29 @@ defmodule Cadet.AssessmentsTest do
       Map.put(seed, :total_submissions, total_submissions)
     end
 
+    test "limit submissions", %{
+      course_regs: %{avenger1_cr: avenger}
+    } do
+      {_, res} =
+        Assessments.submissions_by_grader_for_index(avenger, %{
+          :page_size => 1
+        })
+
+      assert length(res[:data][:submissions]) == 1
+    end
+
+    test "limit submisssions 2", %{
+      course_regs: %{avenger1_cr: avenger},
+      assessments: assessments
+    } do
+      {_, res} =
+        Assessments.submissions_by_grader_for_index(avenger, %{
+          :page_size => 2
+        })
+
+      assert length(res[:data][:submissions]) == 2
+    end
+
     test "filter by assessment title", %{
       course_regs: %{avenger1_cr: avenger},
       assessments: assessments,