1 files changed, 20 insertions, 0 deletions
diff --git a/spec/ruby/library/stringio/readbyte_spec.rb b/spec/ruby/library/stringio/readbyte_spec.rb
new file mode 100644
index 0000000000..41a0911293
--- /dev/null
+++ b/spec/ruby/library/stringio/readbyte_spec.rb
@@ -0,0 +1,20 @@
+require_relative '../../spec_helper'
+require 'stringio'
+require_relative 'shared/readchar'
+
+describe "StringIO#readbyte" do
+  it_behaves_like :stringio_readchar, :readbyte
+
+  it "reads the next 8-bit byte from self's current position" do
+    io = StringIO.new("example")
+
+    io.readbyte.should == 101
+
+    io.pos = 4
+    io.readbyte.should == 112
+  end
+end
+
+describe "StringIO#readbyte when self is not readable" do
+  it_behaves_like :stringio_readchar_not_readable, :readbyte
+end