Fix Rails test not being ran (#649)

spec/acceptance/cache_store_config_for_allow2ban_spec.rb

@@ -12,11 +12,13 @@ describe "Cache store config when using allow2ban" do
     end
   end
 
+  unless defined?(Rails)
     it "gives semantic error if no store was configured" do
       assert_raises(Rack::Attack::MissingStoreError) do
         get "/scarce-resource"
       end
     end
+  end
 
   it "gives semantic error if store is missing #read method" do
     raised_exception = nil

spec/acceptance/cache_store_config_for_fail2ban_spec.rb

@@ -12,11 +12,13 @@ describe "Cache store config when using fail2ban" do
     end
   end
 
+  unless defined?(Rails)
     it "gives semantic error if no store was configured" do
       assert_raises(Rack::Attack::MissingStoreError) do
         get "/private-place"
       end
     end
+  end
 
   it "gives semantic error if store is missing #read method" do
     raised_exception = nil

spec/acceptance/cache_store_config_for_throttle_spec.rb

@@ -9,11 +9,13 @@ describe "Cache store config when throttling without Rails" do
     end
   end
 
+  unless defined?(Rails)
     it "gives semantic error if no store was configured" do
       assert_raises(Rack::Attack::MissingStoreError) do
         get "/", {}, "REMOTE_ADDR" => "1.2.3.4"
       end
     end
+  end
 
   it "gives semantic error if incompatible store was configured" do
     Rack::Attack.cache.store = Object.new

spec/acceptance/cache_store_config_with_rails_spec.rb

@@ -11,6 +11,7 @@ describe "Cache store config with Rails" do
     end
   end
 
+  unless defined?(Rails)
     it "fails when Rails.cache is not set" do
       Object.stub_const(:Rails, OpenStruct.new(cache: nil)) do
         assert_raises(Rack::Attack::MissingStoreError) do
@@ -18,6 +19,7 @@ describe "Cache store config with Rails" do
         end
       end
     end
+  end
 
   it "works when Rails.cache is set" do
     Object.stub_const(:Rails, OpenStruct.new(cache: ActiveSupport::Cache::MemoryStore.new)) do

spec/spec_helper.rb

@@ -20,6 +20,7 @@ end
 
 safe_require "connection_pool"
 safe_require "dalli"
+safe_require "rails"
 safe_require "redis"
 safe_require "redis-store"
 
@@ -27,7 +28,7 @@ class Minitest::Spec
   include Rack::Test::Methods
 
   before do
-    if Object.const_defined?(:Rails) && Rails.respond_to?(:cache)
+    if Object.const_defined?(:Rails) && Rails.respond_to?(:cache) && Rails.cache.respond_to?(:clear)
       Rails.cache.clear
     end
   end