chore: init commit

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

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

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class StiTest < ActiveSupport::TestCase
+  def test_sti_implementation
+    classroom = create(:classroom)
+
+    admin = create(:admin, classroom: classroom)
+    assert_equal "User", admin.type
+
+    student = create(:student, classroom: classroom)
+    assert_equal "Student", student.type
+
+    teacher = create(:teacher, classroom: classroom)
+    assert_equal "Teacher", teacher.type
+
+    admin.update(type: "Student")
+    assert_equal "Student", admin.type
+
+    assert_equal 3, User.count
+    assert_equal 2, Student.count
+    assert_equal 1, Teacher.count
+
+    assert_equal "Student", admin.reload.type
+    assert_equal "Student", student.reload.type
+    assert_equal "Teacher", teacher.reload.type
+  end
+end