Add SystemHookUrlValidator spec

spec/validators/system_hook_url_validator_spec.rb

+require 'spec_helper'
+
+describe SystemHookUrlValidator do
+  include_examples 'url validator examples', AddressableUrlValidator::DEFAULT_OPTIONS[:schemes]
+
+  context 'by default' do
+    let(:validator) { described_class.new(attributes: [:link_url]) }
+    let!(:badge) { build(:badge, link_url: 'http://www.example.com') }
+
+    subject { validator.validate(badge) }
+
+    it 'does not block urls pointing to localhost' do
+      badge.link_url = 'https://127.0.0.1'
+
+      subject
+
+      expect(badge.errors).not_to be_present
+    end
+
+    it 'does not block urls pointing to the local network' do
+      badge.link_url = 'https://192.168.1.1'
+
+      subject
+
+      expect(badge.errors).not_to be_present
+    end
+  end
+
+  context 'when local requests are not allowed' do
+    let(:validator) { described_class.new(attributes: [:link_url], allow_localhost: false, allow_local_network: false) }
+    let!(:badge) { build(:badge, link_url: 'http://www.example.com') }
+
+    subject { validator.validate(badge) }
+
+    it 'blocks urls pointing to localhost' do
+      badge.link_url = 'https://127.0.0.1'
+
+      subject
+
+      expect(badge.errors).to be_present
+    end
+
+    it 'blocks urls pointing to the local network' do
+      badge.link_url = 'https://192.168.1.1'
+
+      subject
+
+      expect(badge.errors).to be_present
+    end
+  end
+end