1 files changed, 11 insertions, 4 deletions
diff --git a/spec/ruby/library/date/jd_spec.rb b/spec/ruby/library/date/jd_spec.rb
index 336b783e8d..e5cfe10eff 100644
--- a/spec/ruby/library/date/jd_spec.rb
+++ b/spec/ruby/library/date/jd_spec.rb
@@ -1,15 +1,22 @@
 require_relative '../../spec_helper'
-require_relative 'shared/jd'
 require 'date'
 
 describe "Date#jd" do
-
   it "determines the Julian day for a Date object" do
     Date.civil(2008, 1, 16).jd.should == 2454482
   end
-
 end
 
 describe "Date.jd" do
-  it_behaves_like :date_jd, :jd
+  it "constructs a Date object if passed a Julian day" do
+    Date.jd(2454482).should == Date.civil(2008, 1, 16)
+  end
+
+  it "returns a Date object representing Julian day 0 (-4712-01-01) if no arguments passed" do
+    Date.jd.should == Date.civil(-4712, 1, 1)
+  end
+
+  it "constructs a Date object if passed a negative number" do
+    Date.jd(-1).should == Date.civil(-4713, 12, 31)
+  end
 end