spec/lib/protobuf/field/sfixed64_field_spec.rb in protobuf-cucumber-3.10.4 vs spec/lib/protobuf/field/sfixed64_field_spec.rb in protobuf-cucumber-3.10.5

@@ -4,6 +4,32 @@
 
   it_behaves_like :packable_field, described_class do
     let(:value) { [-1, 0, 1] }
   end
 
+  let(:message) do
+    Class.new(::Protobuf::Message) do
+      optional :sfixed64, :some_field, 1
+    end
+  end
+
+  # https://developers.google.com/protocol-buffers/docs/proto3#json
+  describe '.{to_json, from_json}' do
+    it 'serialises 0' do
+      instance = message.new(some_field: 0)
+      expect(instance.to_json(proto3: true)).to eq('{}')
+      expect(instance.to_json).to eq('{"some_field":0}')
+    end
+
+    it 'serialises max value' do
+      instance = message.new(some_field: described_class.max)
+      expect(instance.to_json(proto3: true)).to eq('{"someField":"9223372036854775807"}')
+      expect(instance.to_json).to eq('{"some_field":9223372036854775807}')
+    end
+
+    it 'serialises min value as string' do
+      instance = message.new(some_field: described_class.min)
+      expect(instance.to_json(proto3: true)).to eq('{"someField":"-9223372036854775808"}')
+      expect(instance.to_json).to eq('{"some_field":-9223372036854775808}')
+    end
+  end
 end