Add method Cell#cached?

lib/cell/caching.rb

@@ -59,6 +59,20 @@ def cache?(state, *args)
       perform_caching? and state_cached?(state) and self.class.conditional_procs[state].(self, *args)
     end
 
+    # Method for getting whether the cell is cached
+    # If caching is disabled for the cell or the whole app
+    # It returns `false` without hitting cache store
+    #
+    # Same arguments as `#call`
+    def cached?(state=:show, *args)
+      return false unless cache?(state, *args)
+
+      key     = self.class.state_cache_key(state, self.class.version_procs[state].(self, *args))
+      options = self.class.cache_options[state].(self, *args)
+
+      cache_store.exist?(key, options)
+    end
+
   private
 
     def perform_caching?

test/cache_test.rb

@@ -7,6 +7,10 @@ class CacheTest < Minitest::Spec
     def fetch(key, options, &block)
       self[key] || self[key] = yield
     end
+
+    def exist?(key, _options = nil)
+      !!self[key]
+    end
   end.new
 
   module Cache
@@ -24,9 +28,23 @@ class Index < Cell::ViewModel
     include Cache
   end
 
-  it do
-    Index.new(1).().must_equal("1")
-    Index.new(2).().must_equal("1")
+  describe "#call" do
+    it "returns cached value after value cached" do
+      Index.new(1).().must_equal("1")
+      Index.new(2).().must_equal("1")
+    end
+  end
+
+  describe "#cached?" do
+    it "returns cached value after value cached" do
+      cell_1 = Index.new(1)
+      cell_2 = Index.new(2)
+
+      cell_1.cached?.must_equal(false)
+      cell_1.()
+      cell_1.cached?.must_equal(true)
+      cell_2.cached?.must_equal(true)
+    end
   end
 end