1 files changed, 22 insertions, 0 deletions
diff --git a/spec/ruby/core/time/shared/gm.rb b/spec/ruby/core/time/shared/gm.rb
new file mode 100644
index 0000000000..805e35766c
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+++ b/spec/ruby/core/time/shared/gm.rb
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+describe :time_gm, shared: true do
+  it "creates a time based on given values, interpreted as UTC (GMT)" do
+    Time.send(@method, 2000,"jan",1,20,15,1).inspect.should == "2000-01-01 20:15:01 UTC"
+  end
+
+  it "creates a time based on given C-style gmtime arguments, interpreted as UTC (GMT)" do
+    time = Time.send(@method, 1, 15, 20, 1, 1, 2000, :ignored, :ignored, :ignored, :ignored)
+    time.inspect.should == "2000-01-01 20:15:01 UTC"
+  end
+
+  it "interprets pre-Gregorian reform dates using Gregorian proleptic calendar" do
+    Time.send(@method, 1582, 10, 4, 12).to_i.should == -12220200000 # 2299150j
+  end
+
+  it "interprets Julian-Gregorian gap dates using Gregorian proleptic calendar" do
+    Time.send(@method, 1582, 10, 14, 12).to_i.should == -12219336000 # 2299160j
+  end
+
+  it "interprets post-Gregorian reform dates using Gregorian calendar" do
+    Time.send(@method, 1582, 10, 15, 12).to_i.should == -12219249600 # 2299161j
+  end
+end