1 files changed, 60 insertions, 3 deletions
diff --git a/spec/ruby/core/env/each_pair_spec.rb b/spec/ruby/core/env/each_pair_spec.rb
index 01082dd419..1acd2fbb00 100644
--- a/spec/ruby/core/env/each_pair_spec.rb
+++ b/spec/ruby/core/env/each_pair_spec.rb
@@ -1,6 +1,63 @@
-require_relative '../../spec_helper'
-require_relative 'shared/each'
+require_relative 'spec_helper'
+require_relative '../enumerable/shared/enumeratorized'
 
 describe "ENV.each_pair" do
-  it_behaves_like :env_each, :each_pair
+  it "returns each pair" do
+    orig = ENV.to_hash
+    e = []
+    begin
+      ENV.clear
+      ENV["foo"] = "bar"
+      ENV["baz"] = "boo"
+      ENV.each_pair { |k, v| e << [k, v] }.should.equal?(ENV)
+      e.should.include?(["foo", "bar"])
+      e.should.include?(["baz", "boo"])
+    ensure
+      ENV.replace orig
+    end
+  end
+
+  it "returns an Enumerator if called without a block" do
+    enum = ENV.each_pair
+    enum.should.instance_of?(Enumerator)
+    enum.each do |name, value|
+      ENV[name].should == value
+    end
+  end
+
+  it_behaves_like :enumeratorized_with_origin_size, :each_pair, ENV
+
+  describe "with encoding" do
+    before :each do
+      @external = Encoding.default_external
+      @internal = Encoding.default_internal
+
+      Encoding.default_external = Encoding::BINARY
+    end
+
+    after :each do
+      Encoding.default_external = @external
+      Encoding.default_internal = @internal
+    end
+
+    it "uses the locale encoding when Encoding.default_internal is nil" do
+      Encoding.default_internal = nil
+
+      ENV.each_pair do |key, value|
+        key.should.be_locale_env
+        value.should.be_locale_env
+      end
+    end
+
+    it "transcodes from the locale encoding to Encoding.default_internal if set" do
+      Encoding.default_internal = internal = Encoding::IBM437
+
+      ENV.each_pair do |key, value|
+        key.encoding.should.equal?(internal)
+        if value.ascii_only?
+          value.encoding.should.equal?(internal)
+        end
+      end
+    end
+  end
 end