1 files changed, 16 insertions, 2 deletions
diff --git a/spec/ruby/library/date/valid_jd_spec.rb b/spec/ruby/library/date/valid_jd_spec.rb
index aecaaabcf4..46f22de497 100644
--- a/spec/ruby/library/date/valid_jd_spec.rb
+++ b/spec/ruby/library/date/valid_jd_spec.rb
@@ -1,9 +1,23 @@
 require_relative '../../spec_helper'
-require_relative 'shared/valid_jd'
 require 'date'
 
 describe "Date.valid_jd?" do
+  it "returns true if passed a number value" do
+    Date.valid_jd?(-100).should == true
+    Date.valid_jd?(100.0).should == true
+    Date.valid_jd?(2**100).should == true
+    Date.valid_jd?(Rational(1,2)).should == true
+  end
 
-  it_behaves_like :date_valid_jd?, :valid_jd?
+  it "returns false if passed nil" do
+    Date.valid_jd?(nil).should == false
+  end
 
+  it "returns false if passed symbol" do
+    Date.valid_jd?(:number).should == false
+  end
+
+  it "returns false if passed false" do
+    Date.valid_jd?(false).should == false
+  end
 end