Fix rspec deprecation warnings

spec/lib/synapse/haproxy_spec.rb

@@ -7,7 +7,7 @@ class MockWatcher; end;
 
   it 'updating the config' do
     mockWatcher = double(Synapse::ServiceWatcher)
-    subject.should_receive(:generate_config)
+    expect(subject).to receive(:generate_config)
     subject.update_config([mockWatcher])
   end
 end

spec/lib/synapse/service_watcher_ec2tags_spec.rb

@@ -135,39 +135,37 @@ def munge_haproxy_arg(name, new_value)
         # done remotely; breaking into separate calls would result in
         # unnecessary data being retrieved.
 
-        subject.ec2.should_receive(:instances).and_return(instance_collection)
+        expect(subject.ec2).to receive(:instances).and_return(instance_collection)
 
-        instance_collection.should_receive(:tagged).with('foo').and_return(instance_collection)
-        instance_collection.should_receive(:tagged_values).with('bar').and_return(instance_collection)
-        instance_collection.should_receive(:select).and_return(instance_collection)
+        expect(instance_collection).to receive(:tagged).with('foo').and_return(instance_collection)
+        expect(instance_collection).to receive(:tagged_values).with('bar').and_return(instance_collection)
+        expect(instance_collection).to receive(:select).and_return(instance_collection)
 
         subject.send(:instances_with_tags, 'foo', 'bar')
       end
     end
 
     context 'returned backend data structure' do
       before do
-        subject.stub(:instances_with_tags).and_return([instance1, instance2])
+        expect(subject).to receive(:instances_with_tags).and_return([instance1, instance2])
       end
 
       let(:backends) { subject.send(:discover_instances) }
 
       it 'returns an Array of backend name/host/port Hashes' do
 
-        expect { backends.all? {|b| %w[name host port].each {|k| b.has_key?(k) }} }.to be_true
+        expect(backends.all? {|b| %w[name host port].each {|k| b.has_key?(k) }}).to eql(true)
       end
 
       it 'sets the backend port to server_port_override for all backends' do
         backends = subject.send(:discover_instances)
-        expect {
-          backends.all? { |b| b['port'] == basic_config['haproxy']['server_port_override'] }
-        }.to be_true
+        expect(backends.all? { |b| b['port'] == basic_config['haproxy']['server_port_override'] }).to eql(true)
       end
     end
 
     context 'returned instance fields' do
       before do
-        subject.stub(:instances_with_tags).and_return([instance1])
+        expect(subject).to receive(:instances_with_tags).and_return([instance1])
       end
 
       let(:backend) { subject.send(:discover_instances).pop }

spec/spec_helper.rb

@@ -9,7 +9,6 @@
 require 'support/configuration'
 
 RSpec.configure do |config|
-  config.treat_symbols_as_metadata_keys_with_true_values = true
   config.run_all_when_everything_filtered = true
   config.filter_run :focus
   config.include Configuration