determine if instances are InService across a given load balancer and array of load balancers

spec/support/fake_ec2.rb

@@ -0,0 +1,11 @@
+module AWS
+  class FakeEC2
+    def initialize
+    end
+
+    class Instance
+      def initialize
+      end
+    end
+  end
+end

spec/support/fake_elb.rb

@@ -0,0 +1,37 @@
+module AWS
+  class FakeELB
+    def initialize
+    end
+
+    class LoadBalancer
+      def initialize(name, options = {})
+      end
+
+      def instances
+        @instances ||= InstanceCollection.new
+      end
+    end
+
+    class InstanceCollection
+      def initialize
+      end
+
+      def health
+        @health ||= [
+          {
+            instance: AWS::FakeEC2::Instance.new,
+            description: 'N/A',
+            state: 'InService',
+            reason_code: 'N/A'
+          },
+          {
+            instance: AWS::FakeEC2::Instance.new,
+            description: 'Instance has failed at least the UnhealthyThreshold number of health checks consecutively.',
+            state: 'OutOfService',
+            reason_code: 'Instance'
+          }
+        ]
+      end
+    end
+  end
+end