1 files changed, 25 insertions, 0 deletions
diff --git a/spec/ruby/library/stringio/write_nonblock_spec.rb b/spec/ruby/library/stringio/write_nonblock_spec.rb
new file mode 100644
index 0000000000..b48ef6698a
--- /dev/null
+++ b/spec/ruby/library/stringio/write_nonblock_spec.rb
@@ -0,0 +1,25 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/write'
+
+describe "StringIO#write_nonblock when passed [Object]" do
+  it_behaves_like :stringio_write, :write_nonblock
+end
+
+describe "StringIO#write_nonblock when passed [String]" do
+  it_behaves_like :stringio_write_string, :write_nonblock
+
+  it "accepts :exception option" do
+    io = StringIO.new(+"12345", "a")
+    io.write_nonblock("67890", exception: true)
+    io.string.should == "1234567890"
+  end
+end
+
+describe "StringIO#write_nonblock when self is not writable" do
+  it_behaves_like :stringio_write_not_writable, :write_nonblock
+end
+
+describe "StringIO#write_nonblock when in append mode" do
+  it_behaves_like :stringio_write_append, :write_nonblock
+end