add a custom http mock method, quite simple but efficient

Author: eregon

.gitignore

@@ -1 +1,3 @@
 *.gem
+spec/fixtures/*
+!spec/fixtures/.gitkeep

spec/fixtures/.gitkeep

@@ -0,0 +1,22 @@
+class Suby::Downloader
+  caches = {}
+  [:get, :post, :get_redirection].each { |meth|
+    original_method = instance_method(meth)
+    remove_method meth
+    define_method(meth) { |*args|
+      file = 'spec/fixtures/' + self.class::SITE.downcase + '.marshal'
+      caches[file] ||= File.exist?(file) ? Marshal.load(IO.read(file)) : {}
+      data = caches[file]
+
+      if data[args]
+        data[args]
+      else
+        puts "doing the real request: #{meth}(#{args * ', '})"
+        value = original_method.bind(self).call(*args)
+        data[args] = value
+        File.write(file, Marshal.dump(data))
+        value
+      end
+    }
+  }
+end

spec/mock_http.rb

@@ -1 +1,3 @@
+require 'rspec'
 require_relative '../lib/suby'
+require_relative 'mock_http'