From a4ca6827c9b42e53083f1093cd28b50146610ef6 Mon Sep 17 00:00:00 2001
From: Michael Noack <michael.noack@travellink.com.au>
Date: Sun, 12 Jan 2014 17:11:51 +1030
Subject: [PATCH] Add Typhoeus NetAdapter to show example of caching

---
 geokit.gemspec                     |  1 +
 lib/geokit/geocoders.rb            |  1 +
 lib/geokit/net_adapter/typhoeus.rb | 13 +++++++++
 test/helper.rb                     |  4 +++
 test/test_net_adapter.rb           | 46 ++++++++++++++++++++++++++++++
 5 files changed, 65 insertions(+)
 create mode 100644 lib/geokit/net_adapter/typhoeus.rb
 create mode 100644 test/test_net_adapter.rb

diff --git a/geokit.gemspec b/geokit.gemspec
index 51382cb6..d1e4f3fb 100644
--- a/geokit.gemspec
+++ b/geokit.gemspec
@@ -31,4 +31,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'coveralls'
   spec.add_development_dependency 'vcr'
   spec.add_development_dependency 'webmock' # used in vcr
+  spec.add_development_dependency 'typhoeus' # used in net_adapter
 end
diff --git a/lib/geokit/geocoders.rb b/lib/geokit/geocoders.rb
index e1318c82..7a6ca65f 100644
--- a/lib/geokit/geocoders.rb
+++ b/lib/geokit/geocoders.rb
@@ -1,5 +1,6 @@
 require 'net/http'
 require 'geokit/net_adapter/net_http'
+require 'geokit/net_adapter/typhoeus'
 require 'ipaddr'
 require 'rexml/document'
 require 'yaml'
diff --git a/lib/geokit/net_adapter/typhoeus.rb b/lib/geokit/net_adapter/typhoeus.rb
new file mode 100644
index 00000000..7e585b78
--- /dev/null
+++ b/lib/geokit/net_adapter/typhoeus.rb
@@ -0,0 +1,13 @@
+module Geokit
+  module NetAdapter
+    class Typhoeus
+      def self.do_get(url)
+        ::Typhoeus.get(url.to_s)
+      end
+
+      def self.success?(response)
+        response.success?
+      end
+    end
+  end
+end
diff --git a/test/helper.rb b/test/helper.rb
index e829a6a6..80244a6d 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -42,6 +42,10 @@ class MockSuccess < Net::HTTPSuccess #:nodoc: all
   def initialize
     @header = {}
   end
+
+  def success? # Typhoeus
+    true
+  end
 end
 
 class MockFailure < Net::HTTPServiceUnavailable #:nodoc: all
diff --git a/test/test_net_adapter.rb b/test/test_net_adapter.rb
new file mode 100644
index 00000000..06a1a04e
--- /dev/null
+++ b/test/test_net_adapter.rb
@@ -0,0 +1,46 @@
+require File.join(File.dirname(__FILE__), 'helper')
+
+# Base class for testing geocoders.
+class NetAdapterTest < Test::Unit::TestCase #:nodoc: all
+  class Geokit::Geocoders::CachedGeocoder < Geokit::Geocoders::Geocoder
+    def self.parse_json(hash)
+      hash
+    end
+  end
+
+  class SuperSimpleCache
+    def initialize
+      @cache = {}
+    end
+
+    def write(key, value)
+      @cache[key] = value
+    end
+
+    def fetch(key)
+      @cache[key]
+    end
+  end
+
+  RESULT = '{"name":"json"}'
+  RESULT_HASH = {"name" => "json"}
+
+  # Defines common test fixtures.
+  def setup
+    @url = 'http://www.cacheme.com'
+    @address = 'San Francisco, CA'
+  end
+
+  def test_cache
+    old_adapter = Geokit::Geocoders::net_adapter
+    Geokit::Geocoders::net_adapter = Geokit::NetAdapter::Typhoeus
+    Typhoeus::Config.cache = SuperSimpleCache
+    success = MockSuccess.new
+    success.expects(:body).returns(RESULT)
+    url = 'http://www.cacheme.com'
+    Geokit::NetAdapter::Typhoeus.expects(:do_get).with(@url).returns(success)
+    assert_equal RESULT_HASH, Geokit::Geocoders::CachedGeocoder.process(:json, @url)
+    Typhoeus::Config.cache = nil
+    Geokit::Geocoders::net_adapter = old_adapter
+  end
+end