simple collector test

test/register/test_all.rb

@@ -1,5 +1,6 @@
 require_relative "interpreter/test_all"
 
+require_relative "test_collector"
 require_relative "test_compat"
 require_relative "test_instructions"
 require_relative "test_machine"

test/register/test_collector.rb

@@ -0,0 +1,17 @@
+require_relative "../helper"
+
+module Register
+  class TestCollector < MiniTest::Test
+
+    def test_collect_raises
+      Parfait.set_object_space( BootSpace.new )
+      assert_raises {Register::Collector.collect_space}
+    end
+
+    def test_simple_collect
+      Machine.new.boot
+      objects = Register::Collector.collect_space
+      assert_equal 352 , objects.length
+    end
+  end
+end