1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/core/symbol/capitalize_spec.rb b/spec/ruby/core/symbol/capitalize_spec.rb
new file mode 100644
index 0000000000..a93d951e6a
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+++ b/spec/ruby/core/symbol/capitalize_spec.rb
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+# -*- encoding: utf-8 -*-
+require_relative '../../spec_helper'
+
+describe "Symbol#capitalize" do
+  it "returns a Symbol" do
+    :glark.capitalize.should.instance_of?(Symbol)
+  end
+
+  it "converts the first character to uppercase if it is ASCII" do
+    :lower.capitalize.should == :Lower
+  end
+
+  it "leaves the first character alone if it is not an alphabetical character" do
+    :"£1.20".capitalize.should == :"£1.20"
+  end
+
+  it "capitalizes the first character if it is Unicode" do
+    :"äöü".capitalize.should == :"Äöü"
+    :"aou".capitalize.should == :"Aou"
+  end
+
+  it "converts subsequent uppercase ASCII characters to their lowercase equivalents" do
+    :lOWER.capitalize.should == :Lower
+  end
+
+  it "leaves ASCII characters already in the correct case as they were" do
+    :Title.capitalize.should == :Title
+  end
+
+  it "works with both upper- and lowercase ASCII characters in the same Symbol" do
+    :mIxEd.capitalize.should == :Mixed
+  end
+
+  it "leaves lowercase Unicode characters (except in first position) as they were" do
+    "a\u{00DF}C".to_sym.capitalize.should == :"Aßc"
+  end
+
+  it "leaves non-alphabetic ASCII characters as they were" do
+    "Glark?!?".to_sym.capitalize.should == :"Glark?!?"
+  end
+end