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, 32 insertions, 0 deletions

diff --git a/spec/rubyspec/core/env/each_key_spec.rb b/spec/rubyspec/core/env/each_key_spec.rb
new file mode 100644
index 0000000000..82721cdb96
--- /dev/null
+++ b/spec/rubyspec/core/env/each_key_spec.rb
@@ -0,0 +1,32 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../../enumerable/shared/enumeratorized', __FILE__)
+
+describe "ENV.each_key" do
+
+  it "returns each key" do
+    e = []
+    orig = ENV.to_hash
+    begin
+      ENV.clear
+      ENV["1"] = "3"
+      ENV["2"] = "4"
+      ENV.each_key { |k| e << k }
+      e.should include("1")
+      e.should include("2")
+    ensure
+      ENV.replace orig
+    end
+  end
+
+  it "returns an Enumerator if called without a block" do
+    ENV.each_key.should be_an_instance_of(Enumerator)
+  end
+
+  it "returns keys in the locale encoding" do
+    ENV.each_key do |key|
+      key.encoding.should == Encoding.find('locale')
+    end
+  end
+
+  it_behaves_like :enumeratorized_with_origin_size, :each_key, ENV
+end