Add SharedArray extension of SharedMemory (with Enumerable mixin).

spec/process_shared/shared_array_spec.rb

@@ -0,0 +1,26 @@
+require 'spec_helper'
+require 'process_shared/shared_array'
+
+module ProcessShared
+  describe SharedArray do
+    it 'initializes arrays' do
+      mem = SharedArray.new(:int, 10)
+      10.times do |i|
+        mem[i] = i
+      end
+      10.times do |i|
+        mem[i].must_equal i
+      end
+    end
+
+    it 'responds to Enumerable methods' do
+      mem = SharedArray.new(:int, 4)
+      4.times do |i|
+        mem[i] = i+1
+      end
+
+      mem.map { |i| i * 2 }.must_equal [2, 4, 6, 8]
+      mem.sort.must_equal [1, 2, 3, 4]
+    end
+  end
+end