chore: init commit

in worker.../repo/GITFOLDER.zip is the .git folder.

worker-toolkit-stocks-in-the-future/repo/test/models/classroom_grade_test.rb

@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class ClassroomGradeTest < ActiveSupport::TestCase
+  test "factory" do
+    assert build(:classroom_grade).validate!
+  end
+
+  test "belongs to classroom" do
+    classroom = create(:classroom)
+    cg = create(:classroom_grade, classroom: classroom)
+
+    assert_equal classroom, cg.classroom
+  end
+
+  test "belongs to grade" do
+    grade = create(:grade)
+    cg = create(:classroom_grade, grade: grade)
+
+    assert_equal grade, cg.grade
+  end
+
+  test "validates uniqueness of grade scoped to classroom" do
+    classroom = create(:classroom)
+    grade = create(:grade)
+    create(:classroom_grade, classroom: classroom, grade: grade)
+
+    duplicate = build(:classroom_grade, classroom: classroom, grade: grade)
+    assert_not duplicate.valid?
+    assert_includes duplicate.errors[:grade_id], "has already been taken"
+  end
+
+  test "destroying classroom destroys classroom_grade" do
+    classroom = create(:classroom)
+    create(:classroom_grade, classroom: classroom)
+
+    assert_difference "ClassroomGrade.count", -2 do
+      classroom.destroy
+    end
+  end
+end