Add tests

app/controllers/mod_warning_controller.rb

 class ModWarningController < ApplicationController
-  before_action :authenticate_user!
   before_action :verify_moderator, only: [:log, :new, :create]
 
   before_action :set_warning, only: [:current, :approve]
@@ -10,7 +9,7 @@ class ModWarningController < ApplicationController
   end
 
   def approve
-    return not_found if @warning.is_suspension
+    return not_found if @warning.suspension_active?
 
     if params[:approve_checkbox].nil?
       @failed_to_click_checkbox = true

test/controllers/mod_warning_controller_test.rb

 require 'test_helper'
 
-class ModWarningControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
+class ModWarningControllerTest < ActionController::TestCase
+  include Devise::Test::ControllerHelpers
+  
+  test 'should require authentication to access pages' do
+    sign_out :user
+    [:log, :new].each do |path|
+      get path, params: { user_id: users(:standard_user).id }
+      assert_response(404)
+    end
+  end
+
+  test 'should require moderator status to access pages' do
+    sign_in users(:standard_user)
+    [:log, :new].each do |path|
+      get path, params: { user_id: users(:standard_user).id }
+      assert_response(404)
+    end
+  end
+
+  test 'suspended user should redirect to current warning page' do
+    sign_in users(:standard_user)
+    mod_warnings(:first_warning).update(active: true)
+
+    current_controller = @controller
+    @controller = CategoriesController.new
+    get :homepage
+    @controller = current_controller
+
+    assert_redirected_to '/warning'
+    mod_warnings(:first_warning).update(active: false)
+  end
+
+  test 'warned user should be able to accept warning' do
+    sign_in users(:standard_user)
+    @warning = mod_warnings(:first_warning)
+    @warning.update(active: true)
+    post :approve, params: { approve_checkbox: true }
+    @warning.reload
+    assert !@warning.active
+  end
+
+  test 'suspended user should not be able to accept pending suspension' do
+    sign_in users(:standard_user)
+    @warning = mod_warnings(:third_warning)
+    @warning.update(active: true)
+    post :approve, params: { approve_checkbox: true }
+    @warning.reload
+    assert @warning.active
+  end
+
+  test 'suspended user should be able to accept outdated suspension' do
+    sign_in users(:standard_user)
+    @warning = mod_warnings(:second_warning)
+    @warning.update(active: true)
+    post :approve, params: { approve_checkbox: true }
+    @warning.reload
+    assert !@warning.active
+  end
 end

test/fixtures/mod_warnings.yml

 # Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
 
-# This model initially had no columns defined. If you add columns to the
-# model remove the '{}' from the fixture names and add the columns immediately
-# below each fixture, per the syntax in the comments below
-#
-one: {}
-# column: value
-#
-two: {}
-# column: value
+first_warning:
+  community_user: sample_standard_user
+  body: NOBODY EXPECTS THE SPANISH INQUISITION
+  is_suspension: false
+  active: false
+  author: moderator
+
+second_warning:
+  community_user: sample_standard_user
+  body: NOBODY EXPECTS THE SPANISH INQUISITION!
+  is_suspension: true
+  suspension_end: 2000-01-01T00:00:00.000000Z
+  active: false
+  author: moderator
+
+third_warning:
+  community_user: sample_standard_user
+  body: NOBODY EXPECTS THE SPANISH INQUISITION!!!
+  is_suspension: true
+  suspension_end: 5000-01-01T00:00:00.000000Z
+  active: false
+  author: moderator
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