Acceptance test cache store config for fail2ban

spec/acceptance/cache_store_config_for_fail2ban_spec.rb

@@ -0,0 +1,62 @@
+require_relative "../spec_helper"
+
+describe "Cache store config when using fail2ban" do
+  before do
+    Rack::Attack.blocklist("fail2ban pentesters") do |request|
+      Rack::Attack::Fail2Ban.filter(request.ip, maxretry: 2, findtime: 30, bantime: 60) do
+        request.path.include?("private-place")
+      end
+    end
+  end
+
+  it "gives error if no store was configured" do
+    assert_raises do
+      get "/"
+    end
+  end
+
+  it "gives error if incompatible store was configured" do
+    Rack::Attack.cache.store = Object.new
+
+    assert_raises do
+      get "/"
+    end
+  end
+
+  it "works with any object that responds to #read, #write and #increment" do
+    basic_store_class = Class.new do
+      attr_accessor :backend
+
+      def initialize
+        @backend = {}
+      end
+
+      def read(key)
+        @backend[key]
+      end
+
+      def write(key, value, options = {})
+        @backend[key] = value
+      end
+
+      def increment(key, count, options = {})
+        @backend[key] ||= 0
+        @backend[key] += 1
+      end
+    end
+
+    Rack::Attack.cache.store = basic_store_class.new
+
+    get "/"
+    assert_equal 200, last_response.status
+
+    get "/private-place"
+    assert_equal 403, last_response.status
+
+    get "/private-place"
+    assert_equal 403, last_response.status
+
+    get "/"
+    assert_equal 403, last_response.status
+  end
+end