Update to ruby/spec@9a501a8

spec/ruby/library/objectspace/reachable_objects_from_spec.rb

@@ -0,0 +1,61 @@
+require_relative '../../spec_helper'
+require 'objspace'
+
+describe "ObjectSpace.reachable_objects_from" do
+  it "returns nil for true and false" do
+    ObjectSpace.reachable_objects_from(true).should == nil
+    ObjectSpace.reachable_objects_from(false).should == nil
+  end
+
+  it "returns nil for nil" do
+    ObjectSpace.reachable_objects_from(nil).should == nil
+  end
+
+  it "returns nil for small Integers" do
+    ObjectSpace.reachable_objects_from(42).should == nil
+  end
+
+  it "enumerates objects directly reachable from a given object" do
+    ObjectSpace.reachable_objects_from(['a', 'b', 'c']).should include(Array, 'a', 'b', 'c')
+    ObjectSpace.reachable_objects_from(Object.new).should == [Object]
+  end
+
+  it "finds an object stored in an Array" do
+    obj = Object.new
+    ary = [obj]
+    reachable = ObjectSpace.reachable_objects_from(ary)
+    reachable.should include(obj)
+  end
+
+  it "finds an object stored in a copy-on-write Array" do
+    removed = Object.new
+    obj = Object.new
+    ary = [removed, obj]
+    ary.shift
+    reachable = ObjectSpace.reachable_objects_from(ary)
+    reachable.should include(obj)
+    reachable.should_not include(removed)
+  end
+
+  it "finds an object stored in a Queue" do
+    require 'thread'
+    o = Object.new
+    q = Queue.new
+    q << o
+
+    reachable = ObjectSpace.reachable_objects_from(q)
+    reachable = reachable + reachable.flat_map { |r| ObjectSpace.reachable_objects_from(r) }
+    reachable.should include(o)
+  end
+
+  it "finds an object stored in a SizedQueue" do
+    require 'thread'
+    o = Object.new
+    q = SizedQueue.new(3)
+    q << o
+
+    reachable = ObjectSpace.reachable_objects_from(q)
+    reachable = reachable + reachable.flat_map { |r| ObjectSpace.reachable_objects_from(r) }
+    reachable.should include(o)
+  end
+end