Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 23 insertions, 0 deletions

diff --git a/spec/rubyspec/core/hash/keys_spec.rb b/spec/rubyspec/core/hash/keys_spec.rb
new file mode 100644
index 0000000000..bc7855f73b
--- /dev/null
+++ b/spec/rubyspec/core/hash/keys_spec.rb
@@ -0,0 +1,23 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Hash#keys" do
+
+  it "returns an array with the keys in the order they were inserted" do
+    {}.keys.should == []
+    {}.keys.should be_kind_of(Array)
+    Hash.new(5).keys.should == []
+    Hash.new { 5 }.keys.should == []
+    { 1 => 2, 4 => 8, 2 => 4 }.keys.should == [1, 4, 2]
+    { 1 => 2, 2 => 4, 4 => 8 }.keys.should be_kind_of(Array)
+    { nil => nil }.keys.should == [nil]
+  end
+
+  it "uses the same order as #values" do
+    h = { 1 => "1", 2 => "2", 3 => "3", 4 => "4" }
+
+    h.size.times do |i|
+      h[h.keys[i]].should == h.values[i]
+    end
+  end
+end