1 files changed, 30 insertions, 0 deletions
diff --git a/spec/ruby/library/pp/pp_spec.rb b/spec/ruby/library/pp/pp_spec.rb
new file mode 100644
index 0000000000..e45a6bb94f
--- /dev/null
+++ b/spec/ruby/library/pp/pp_spec.rb
@@ -0,0 +1,30 @@
+require_relative '../../spec_helper'
+require 'pp'
+
+describe "PP.pp" do
+  it 'works with default arguments' do
+    array = [1, 2, 3]
+
+    -> {
+      PP.pp array
+    }.should output "[1, 2, 3]\n"
+  end
+
+  it 'allows specifying out explicitly' do
+    array = [1, 2, 3]
+    other_out = IOStub.new
+
+    -> {
+      PP.pp array, other_out
+    }.should output "" # no output on stdout
+
+    other_out.to_s.should == "[1, 2, 3]\n"
+  end
+
+  it 'correctly prints a Hash' do
+    hash = { 'key' => 42 }
+    -> {
+      PP.pp hash
+    }.should output("#{hash.inspect}\n")
+  end
+end