1 files changed, 26 insertions, 0 deletions
diff --git a/spec/rubyspec/core/symbol/downcase_spec.rb b/spec/rubyspec/core/symbol/downcase_spec.rb
new file mode 100644
index 0000000000..0b2422ad3e
--- /dev/null
+++ b/spec/rubyspec/core/symbol/downcase_spec.rb
@@ -0,0 +1,26 @@
+# -*- encoding: utf-8 -*-
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Symbol#downcase" do
+  it "returns a Symbol" do
+    :glark.downcase.should be_an_instance_of(Symbol)
+  end
+
+  it "converts uppercase ASCII characters to their lowercase equivalents" do
+    :lOwEr.downcase.should == :lower
+  end
+
+  it "leaves lowercase Unicode characters as they were" do
+    "\u{E0}Bc".to_sym.downcase.should == :"àbc"
+  end
+
+  ruby_version_is ''...'2.4' do
+    it "leaves uppercase Unicode characters as they were" do
+      "\u{DE}Bc".to_sym.downcase.should == :"Þbc"
+    end
+  end
+
+  it "leaves non-alphabetic ASCII characters as they were" do
+    "Glark?!?".to_sym.downcase.should == :"glark?!?"
+  end
+end