memoize_spec.rb in adamantium-0.2.0

- old
+ new

@@ -7,37 +7,30 @@
   it 'memoizes the instance method' do
     subject
     instance = object.new
     expect(instance.send(method)).to be(instance.send(method))
   end
+end
 
-  it 'creates a method that returns a same value' do
-    subject
-    instance = object.new
-    expect(instance.send(method)).to be(instance.send(method))
-  end
-
+shared_examples_for 'wraps original method' do
   it 'creates a method with an arity of 0' do
     subject
     expect(object.new.method(method).arity).to be_zero
   end
 
   context 'when the initializer calls the memoized method' do
+    it_should_behave_like 'memoizes method'
+
     before do
       method = self.method
       object.send(:define_method, :initialize) { send(method) }
     end
 
     it 'allows the memoized method to be called within the initializer' do
       subject
       expect { object.new }.to_not raise_error
     end
-
-    it 'memoizes the methdod inside the initializer' do
-      subject
-      expect(object.new.memoized(method)).to_not be_nil
-    end
   end
 end
 
 describe Adamantium::ModuleMethods, '#memoize' do
   subject { object.memoize(method, options) }
@@ -54,20 +47,20 @@
 
   context 'on method with arguments' do
     let(:method) { :argumented }
 
     it 'should raise error' do
-      expect { subject }.to raise_error(ArgumentError, 'Cannot memoize method with nonzero arity')
+      expect { subject }.to raise_error(ArgumentError, "Cannot memoize #{object}#argumented, its arity is 1")
     end
   end
 
   context 'with :noop freezer option' do
     let(:method)  { :some_state        }
     let(:options) { { freezer: :noop } }
 
     it_should_behave_like 'a command method'
-    it_should_behave_like 'memoizes method'
+    it_should_behave_like 'wraps original method'
 
     it 'is still a public method' do
       should be_public_method_defined(method)
     end
 
@@ -80,10 +73,11 @@
   context 'memoized method that returns generated values' do
     let(:method) { :some_state }
 
     it_should_behave_like 'a command method'
     it_should_behave_like 'memoizes method'
+    it_should_behave_like 'wraps original method'
 
     it 'creates a method that returns a frozen value' do
       subject
       expect(object.new.send(method)).to be_frozen
     end
@@ -92,9 +86,10 @@
   context 'public method' do
     let(:method) { :public_method }
 
     it_should_behave_like 'a command method'
     it_should_behave_like 'memoizes method'
+    it_should_behave_like 'wraps original method'
 
     it 'is still a public method' do
       should be_public_method_defined(method)
     end
 