1 files changed, 14 insertions, 0 deletions
diff --git a/spec/ruby/library/date/shared/jd.rb b/spec/ruby/library/date/shared/jd.rb
new file mode 100644
index 0000000000..511557b4f7
--- /dev/null
+++ b/spec/ruby/library/date/shared/jd.rb
@@ -0,0 +1,14 @@
+describe :date_jd, shared: true do
+  it "constructs a Date object if passed a Julian day" do
+    Date.send(@method, 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.send(@method).should == Date.civil(-4712, 1, 1)
+  end
+
+  it "constructs a Date object if passed a negative number" do
+    Date.send(@method, -1).should == Date.civil(-4713, 12, 31)
+  end
+
+end