1 files changed, 14 insertions, 0 deletions
diff --git a/spec/ruby/library/etc/confstr_spec.rb b/spec/ruby/library/etc/confstr_spec.rb
new file mode 100644
index 0000000000..786cb16407
--- /dev/null
+++ b/spec/ruby/library/etc/confstr_spec.rb
@@ -0,0 +1,14 @@
+require_relative '../../spec_helper'
+require 'etc'
+
+platform_is_not :windows, :android do
+  describe "Etc.confstr" do
+    it "returns a String for Etc::CS_PATH" do
+      Etc.confstr(Etc::CS_PATH).should.instance_of?(String)
+    end
+
+    it "raises Errno::EINVAL for unknown configuration variables" do
+      -> { Etc.confstr(-1) }.should.raise(Errno::EINVAL)
+    end
+  end
+end