A ton of stuff was done to finalize the app for use

test/controllers/mats_controller_test.rb

@@ -0,0 +1,49 @@
+require 'test_helper'
+
+class MatsControllerTest < ActionController::TestCase
+  setup do
+    @mat = mats(:one)
+  end
+
+  test "should get index" do
+    get :index
+    assert_response :success
+    assert_not_nil assigns(:mats)
+  end
+
+  test "should get new" do
+    get :new
+    assert_response :success
+  end
+
+  test "should create mat" do
+    assert_difference('Mat.count') do
+      post :create, mat: { name: @mat.name, tournament_id: @mat.tournament_id }
+    end
+
+    assert_redirected_to mat_path(assigns(:mat))
+  end
+
+  test "should show mat" do
+    get :show, id: @mat
+    assert_response :success
+  end
+
+  test "should get edit" do
+    get :edit, id: @mat
+    assert_response :success
+  end
+
+  test "should update mat" do
+    patch :update, id: @mat, mat: { name: @mat.name, tournament_id: @mat.tournament_id }
+    assert_redirected_to mat_path(assigns(:mat))
+  end
+
+  test "should destroy mat" do
+    assert_difference('Mat.count', -1) do
+      delete :destroy, id: @mat
+    end
+
+    assert_redirected_to mats_path
+  end
+end