diff --git a/app/controllers/testcases_controller.rb b/app/controllers/testcases_controller.rb
new file mode 100644
--- /dev/null
+++ b/app/controllers/testcases_controller.rb
@@ -0,0 +1,32 @@
+class TestcasesController < ApplicationController
+  before_action :set_testcase, only: [:download_input,:download_sol]
+  before_action :testcase_authorization
+
+  def download_input
+    send_data @testcase.input, type: 'text/plain', filename: "#{@testcase.problem.name}.#{@testcase.num}.in"
+  end
+
+  def download_sol
+    send_data @testcase.sol, type: 'text/plain', filename: "#{@testcase.problem.name}.#{@testcase.num}.sol"
+  end
+
+  def show_problem
+    @problem = Problem.includes(:testcases).find(params[:problem_id])
+    unless @current_user.admin? or @problem.view_testcase
+      flash[:error] = 'You cannot view the testcase of this problem'
+      redirect_to :controller => 'main', :action => 'list'
+    end
+  end
+
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_testcase
+      @testcase = Testcase.find(params[:id])
+    end
+
+    # Only allow a trusted parameter "white list" through.
+    def testcase_params
+      params[:testcase]
+    end
+end