Adds wp-cron.php detection - Fixes #1299

spec/app/finders/interesting_findings/wp_cron_spec.rb

@@ -0,0 +1,30 @@
+describe WPScan::Finders::InterestingFindings::WPCron do
+  subject(:finder) { described_class.new(target) }
+  let(:target)     { WPScan::Target.new(url) }
+  let(:url)        { 'http://ex.lo/' }
+  let(:wp_content) { 'wp-content' }
+
+  before { expect(target).to receive(:sub_dir).at_least(1).and_return(false) }
+
+  describe '#aggressive' do
+    before { stub_request(:get, finder.wp_cron_url).to_return(status: status) }
+
+    context 'when 200' do
+      let(:status) { 200 }
+
+      it 'returns the InterestingFinding' do
+        expect(finder.aggressive).to eql WPScan::WPCron.new(
+          finder.wp_cron_url,
+          confidence: 100,
+          found_by: described_class::DIRECT_ACCESS
+        )
+      end
+    end
+
+    context 'otherwise' do
+      let(:status) { 403 }
+
+      its(:aggressive) { should be_nil }
+    end
+  end
+end