Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 36 insertions, 0 deletions

diff --git a/spec/ruby/core/hash/hash_spec.rb b/spec/ruby/core/hash/hash_spec.rb
new file mode 100644
index 0000000000..9d1e984c60
--- /dev/null
+++ b/spec/ruby/core/hash/hash_spec.rb
@@ -0,0 +1,36 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Hash" do
+  it "includes Enumerable" do
+    Hash.include?(Enumerable).should == true
+  end
+end
+
+describe "Hash#hash" do
+  it "returns a value which doesn't depend on the hash order" do
+    { 0=>2, 11=>1 }.hash.should == { 11=>1, 0=>2 }.hash
+  end
+
+  it "generates a hash for recursive hash structures" do
+    h = {}
+    h[:a] = h
+    (h.hash == h[:a].hash).should == true
+  end
+
+  it "returns the same hash for recursive hashes" do
+    h = {} ; h[:x] = h
+    h.hash.should == {x: h}.hash
+    h.hash.should == {x: {x: h}}.hash
+    # This is because h.eql?(x: h)
+    # Remember that if two objects are eql?
+    # then the need to have the same hash.
+    # Check the Hash#eql? specs!
+  end
+
+  it "returns the same hash for recursive hashes through arrays" do
+    h = {} ; rec = [h] ; h[:x] = rec
+    h.hash.should == {x: rec}.hash
+    h.hash.should == {x: [h]}.hash
+    # Like above, because h.eql?(x: [h])
+  end
+end