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

spec/ruby/core/env/shift_spec.rb

@@ -0,0 +1,59 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "ENV.shift" do
+  it "returns a pair and deletes it" do
+    ENV.empty?.should == false
+    orig = ENV.to_hash
+    begin
+      pair = ENV.shift
+      ENV.has_key?(pair.first).should == false
+    ensure
+      ENV.replace orig
+    end
+    ENV.has_key?(pair.first).should == true
+  end
+
+  it "returns nil if ENV.empty?" do
+    orig = ENV.to_hash
+    begin
+      ENV.clear
+      ENV.shift.should == nil
+    ensure
+      ENV.replace orig
+    end
+  end
+end
+
+with_feature :encoding do
+  describe "ENV.shift" do
+    before :each do
+      @orig = ENV.to_hash
+      @external = Encoding.default_external
+      @internal = Encoding.default_internal
+
+      Encoding.default_external = Encoding::ASCII_8BIT
+    end
+
+    after :each do
+      Encoding.default_external = @external
+      Encoding.default_internal = @internal
+      ENV.replace @orig
+    end
+
+    it "uses the locale encoding if Encoding.default_internal is nil" do
+      Encoding.default_internal = nil
+
+      pair = ENV.shift
+      pair.first.encoding.should equal(Encoding.find("locale"))
+      pair.last.encoding.should equal(Encoding.find("locale"))
+    end
+
+    it "transcodes from the locale encoding to Encoding.default_internal if set" do
+      Encoding.default_internal = Encoding::IBM437
+
+      pair = ENV.shift
+      pair.first.encoding.should equal(Encoding::IBM437)
+      pair.last.encoding.should equal(Encoding::IBM437)
+    end
+  end
+end