constant_spec.rb in danica-2.0.2

- old
+ new

@@ -1,10 +1,13 @@
 require 'spec_helper'
 
 describe Danica::Constant do
-  let(:subject) { described_class.new(2.5, :M, :m) }
+  subject { described_class.new(2.5, :M, :m) }
+  let(:other) { described_class.new(3, :N, :n) }
 
+  it_behaves_like 'an object with + operation'
+
   describe '#to_f' do
     it 'has a value' do
       expect(subject.to_f).to eq(2.5)
     end
   end
@@ -23,8 +26,25 @@
 
   describe 'variables' do
     it { expect(subject).not_to respond_to(:value=) }
     it { expect(subject).not_to respond_to(:latex=) }
     it { expect(subject).not_to respond_to(:gnu=) }
+  end
+
+  describe '==' do
+    context 'when comparing with the same object' do
+      it { expect(subject).to eq(subject) }
+    end
+
+    context 'when comparing with a diferent object' do
+      context 'with diferent values' do
+        it { expect(subject).not_to eq(other) }
+      end
+
+      context 'with same values' do
+        let(:other) { described_class.new(2.5, :M, :m) }
+        it { expect(subject).to eq(other) }
+      end
+    end
   end
 end
 