1 files changed, 30 insertions, 0 deletions
diff --git a/spec/ruby/core/struct/shared/equal_value.rb b/spec/ruby/core/struct/shared/equal_value.rb
new file mode 100644
index 0000000000..711862cb44
--- /dev/null
+++ b/spec/ruby/core/struct/shared/equal_value.rb
@@ -0,0 +1,30 @@
+describe :struct_equal_value, shared: true do
+  it "returns true if the other is the same object" do
+    car = same_car = StructClasses::Car.new("Honda", "Accord", "1998")
+    car.send(@method, same_car).should == true
+  end
+
+  it "returns true if the other has all the same fields" do
+    car = StructClasses::Car.new("Honda", "Accord", "1998")
+    similar_car = StructClasses::Car.new("Honda", "Accord", "1998")
+    car.send(@method, similar_car).should == true
+  end
+
+  it "returns false if the other is a different object or has different fields" do
+    car = StructClasses::Car.new("Honda", "Accord", "1998")
+    different_car = StructClasses::Car.new("Honda", "Accord", "1995")
+    car.send(@method, different_car).should == false
+  end
+
+  it "handles recursive structures by returning false if a difference can be found" do
+    x = StructClasses::Car.new("Honda", "Accord", "1998")
+    x[:make] = x
+    stepping = StructClasses::Car.new("Honda", "Accord", "1998")
+    stone = StructClasses::Car.new(stepping, "Accord", "1998")
+    stepping[:make] = stone
+    x.send(@method, stepping).should == true
+
+    stone[:year] = "1999" # introduce a difference
+    x.send(@method, stepping).should == false
+  end
+end