1 files changed, 21 insertions, 0 deletions
diff --git a/spec/ruby/core/time/yday_spec.rb b/spec/ruby/core/time/yday_spec.rb
new file mode 100644
index 0000000000..2b7aca1565
--- /dev/null
+++ b/spec/ruby/core/time/yday_spec.rb
@@ -0,0 +1,21 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Time#yday" do
+  it "returns an integer representing the day of the year, 1..366" do
+    with_timezone("UTC") do
+      Time.at(9999999).yday.should == 116
+    end
+  end
+
+  it 'returns the correct value for each day of each month' do
+    mdays = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
+
+    yday = 1
+    mdays.each_with_index do |days, month|
+      days.times do |day|
+        Time.new(2014, month+1, day+1).yday.should == yday
+        yday += 1
+      end
+    end
+  end
+end