1 files changed, 47 insertions, 0 deletions
diff --git a/spec/ruby/core/encoding/locale_charmap_spec.rb b/spec/ruby/core/encoding/locale_charmap_spec.rb
new file mode 100644
index 0000000000..12b93c2562
--- /dev/null
+++ b/spec/ruby/core/encoding/locale_charmap_spec.rb
@@ -0,0 +1,47 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+with_feature :encoding do
+  describe "Encoding.locale_charmap" do
+    it "returns a String" do
+      Encoding.locale_charmap.should be_an_instance_of(String)
+    end
+
+    # FIXME: Get this working on Windows
+    platform_is :linux do
+      it "returns a value based on the LC_ALL environment variable" do
+        old_lc_all = ENV['LC_ALL']
+        ENV['LC_ALL'] = 'C'
+        ruby_exe("print Encoding.locale_charmap").should == 'ANSI_X3.4-1968'
+        ENV['LC_ALL'] = old_lc_all
+      end
+    end
+
+    platform_is :freebsd, :darwin do
+      it "returns a value based on the LC_ALL environment variable" do
+        old_lc_all = ENV['LC_ALL']
+        ENV['LC_ALL'] = 'C'
+        ruby_exe("print Encoding.locale_charmap").should == 'US-ASCII'
+        ENV['LC_ALL'] = old_lc_all
+      end
+    end
+
+    platform_is :netbsd, :openbsd do
+      it "returns a value based on the LC_ALL environment variable" do
+        old_lc_all = ENV['LC_ALL']
+        ENV['LC_ALL'] = 'C'
+        ruby_exe("print Encoding.locale_charmap").should == '646'
+        ENV['LC_ALL'] = old_lc_all
+      end
+    end
+
+    platform_is :bsd, :darwin, :linux do
+      it "is unaffected by assigning to ENV['LC_ALL'] in the same process" do
+        old_charmap = Encoding.locale_charmap
+        old_lc_all = ENV['LC_ALL']
+        ENV['LC_ALL'] = 'C'
+        Encoding.locale_charmap.should == old_charmap
+        ENV['LC_ALL'] = old_lc_all
+      end
+    end
+  end
+end