1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/library/open3/popen3_spec.rb b/spec/ruby/library/open3/popen3_spec.rb
new file mode 100644
index 0000000000..3651bd516c
--- /dev/null
+++ b/spec/ruby/library/open3/popen3_spec.rb
@@ -0,0 +1,41 @@
+require_relative '../../spec_helper'
+require 'open3'
+
+describe "Open3.popen3" do
+  it "returns in, out, err and a thread waiting the process" do
+    stdin, out, err, waiter = Open3.popen3(ruby_cmd("print :foo"))
+    begin
+      stdin.should.is_a? IO
+      out.should.is_a? IO
+      err.should.is_a? IO
+      waiter.should.is_a? Thread
+
+      out.read.should == "foo"
+    ensure
+      stdin.close
+      out.close
+      err.close
+      waiter.join
+    end
+  end
+
+  it "executes a process with a pipe to read stdout" do
+    Open3.popen3(ruby_cmd("print :foo")) do |stdin, out, err|
+      out.read.should == "foo"
+    end
+  end
+
+  it "executes a process with a pipe to read stderr" do
+    Open3.popen3(ruby_cmd("STDERR.print :foo")) do |stdin, out, err|
+      err.read.should == "foo"
+    end
+  end
+
+  it "executes a process with a pipe to write stdin" do
+    Open3.popen3(ruby_cmd("print STDIN.read")) do |stdin, out, err|
+      stdin.write("foo")
+      stdin.close
+      out.read.should == "foo"
+    end
+  end
+end