setting not config defaults to nil

lib/generators/private_pub/templates/private_pub.yml

@@ -7,3 +7,4 @@ test:
 production:
   server: "http://example.com/faye"
   secret_token: "<%= ActiveSupport::SecureRandom.hex(32) %>"
+  signature_expiration: 3600 # one hour

lib/private_pub.rb

@@ -11,10 +11,7 @@ class << self
     attr_reader :config
 
     def reset_config
-      @config = {
-        :server => "http://localhost:9292/faye",
-        :signature_expiration => 60 * 60, # one hour
-      }
+      @config = {}
     end
 
     def load_config(filename, environment)

spec/private_pub/faye_extension_spec.rb

@@ -24,7 +24,8 @@
     message["error"].should be_nil
   end
 
-  it "has an error when signature is just expired" do
+  it "has an error when signature just expired" do
+    PrivatePub.config[:signature_expiration] = 1
     sub = PrivatePub.subscription(:timestamp => 123, :channel => "hello")
     @message["subscription"] = sub[:channel]
     @message["ext"]["private_pub_signature"] = sub[:signature]

spec/private_pub_spec.rb

@@ -5,12 +5,12 @@
     PrivatePub.reset_config
   end
 
-  it "defaults server to localhost:9292/faye" do
-    PrivatePub.config[:server].should == "http://localhost:9292/faye"
+  it "defaults server to nil" do
+    PrivatePub.config[:server].should be_nil
   end
 
-  it "defaults signature_expiration to 1 hour" do
-    PrivatePub.config[:signature_expiration].should == 60 * 60
+  it "defaults signature_expiration to nil" do
+    PrivatePub.config[:signature_expiration].should be_nil
   end
 
   it "defaults subscription timestamp to current time in milliseconds" do
@@ -76,8 +76,9 @@
   end
 
   it "publish message as json to server using Net::HTTP" do
+    PrivatePub.config[:server] = "http://localhost"
     message = stub(:to_json => "message_json")
-    Net::HTTP.should_receive(:post_form).with(URI.parse(PrivatePub.config[:server]), :message => "message_json").and_return(:result)
+    Net::HTTP.should_receive(:post_form).with(URI.parse("http://localhost"), :message => "message_json").and_return(:result)
     PrivatePub.publish_message(message).should == :result
   end