presenter_spec.rb in curly-templates-0.8.0

- old
+ new

@@ -7,14 +7,20 @@
       end
     end
 
     include MonkeyComponents
 
-    presents :midget, :clown
-    attr_reader :midget, :clown
+    presents :midget, :clown, default: nil
+    presents :elephant, default: "Dumbo"
+
+    attr_reader :midget, :clown, :elephant
   end
 
+  class FrenchCircusPresenter < CircusPresenter
+    presents :elephant, default: "Babar"
+  end
+
   it "sets the presented parameters as instance variables" do
     context = double("context")
 
     presenter = CircusPresenter.new(context,
       midget: "Meek Harolson",
@@ -23,10 +29,22 @@
 
     presenter.midget.should == "Meek Harolson"
     presenter.clown.should == "Bubbles"
   end
 
+  it "allows specifying default values for parameters" do
+    context = double("context")
+
+    # Make sure subclasses can change default values.
+    french_presenter = FrenchCircusPresenter.new(context)
+    french_presenter.elephant.should == "Babar"
+
+    # The subclass shouldn't change the superclass' defaults, though.
+    presenter = CircusPresenter.new(context)
+    presenter.elephant.should == "Dumbo"
+  end
+
   describe ".presenter_for_path" do
     it "returns the presenter class for the given path" do
       presenter = double("presenter")
       stub_const("Foo::BarPresenter", presenter)
 
@@ -42,9 +60,29 @@
       String.any_instance.stub(:constantize).and_raise(error)
 
       expect do
         Curly::Presenter.presenter_for_path("foo/bar")
       end.to raise_error(NameError)
+    end
+  end
+
+  describe ".available_methods" do
+    it "includes the methods on the presenter" do
+      CircusPresenter.available_methods.should include(:midget)
+    end
+
+    it "does not include methods on the Curly::Presenter base class" do
+      CircusPresenter.available_methods.should_not include(:cache_key)
+    end
+  end
+
+  describe ".method_available?" do
+    it "returns true if the method is available" do
+      CircusPresenter.method_available?(:midget).should be_true
+    end
+
+    it "returns false if the method is not available" do
+      CircusPresenter.method_available?(:bear).should be_false
     end
   end
 
   describe ".version" do
     it "sets the version of the presenter" do