Store exists.

Of course, it's just a module with a Hash. We'll get there!

Rakefile

@@ -1 +1,12 @@
 require "bundler/gem_tasks"
+
+require 'rake/testtask'
+
+Rake::TestTask.new do |t|
+  t.libs << "lib"
+  t.test_files = FileList['test/*_test.rb']
+  t.ruby_opts = ['-r./test/test_helper.rb']
+  t.verbose = true
+end
+
+task :default => :test

lib/request_store.rb

@@ -1,5 +1,9 @@
 require "request_store/version"
 
 module RequestStore
-  # Your code goes here...
+  @store = {}
+
+  def self.store
+    @store
+  end
 end

test/request_store_test.rb

@@ -0,0 +1,11 @@
+require 'minitest/autorun'
+
+require 'request_store'
+
+class RequestStoreTest < Minitest::Unit::TestCase
+  def test_quacks_like_hash
+    RequestStore.store[:foo] = 1
+    assert_equal 1, RequestStore.store[:foo]
+    assert_equal 1, RequestStore.store.fetch(:foo)
+  end
+end