1 files changed, 20 insertions, 0 deletions
diff --git a/spec/ruby/library/date/shared/valid_jd.rb b/spec/ruby/library/date/shared/valid_jd.rb
new file mode 100644
index 0000000000..0c01710208
--- /dev/null
+++ b/spec/ruby/library/date/shared/valid_jd.rb
@@ -0,0 +1,20 @@
+describe :date_valid_jd?, shared: true do
+  it "returns true if passed a number value" do
+    Date.send(@method, -100).should == true
+    Date.send(@method, 100.0).should == true
+    Date.send(@method, 2**100).should == true
+    Date.send(@method, Rational(1,2)).should == true
+  end
+
+  it "returns false if passed nil" do
+    Date.send(@method, nil).should == false
+  end
+
+  it "returns false if passed symbol" do
+    Date.send(@method, :number).should == false
+  end
+
+  it "returns false if passed false" do
+    Date.send(@method, false).should == false
+  end
+end