1 files changed, 18 insertions, 0 deletions
diff --git a/spec/ruby/core/symbol/succ_spec.rb b/spec/ruby/core/symbol/succ_spec.rb
new file mode 100644
index 0000000000..893164a2a6
--- /dev/null
+++ b/spec/ruby/core/symbol/succ_spec.rb
@@ -0,0 +1,18 @@
+require_relative '../../spec_helper'
+
+describe "Symbol#succ" do
+  it "returns a successor" do
+    :abcd.succ.should == :abce
+    :THX1138.succ.should == :THX1139
+  end
+
+  it "propagates a 'carry'" do
+    :"1999zzz".succ.should == :"2000aaa"
+    :ZZZ9999.succ.should == :AAAA0000
+  end
+
+  it "increments non-alphanumeric characters when no alphanumeric characters are present" do
+    :"<<koala>>".succ.should == :"<<koalb>>"
+    :"***".succ.should == :"**+"
+  end
+end