1 files changed, 61 insertions, 0 deletions
diff --git a/spec/ruby/library/bigdecimal/shared/eql.rb b/spec/ruby/library/bigdecimal/shared/eql.rb
new file mode 100644
index 0000000000..eaad272e9a
--- /dev/null
+++ b/spec/ruby/library/bigdecimal/shared/eql.rb
@@ -0,0 +1,61 @@
+require 'bigdecimal'
+
+describe :bigdecimal_eql, shared: true do
+  before :each do
+    @bg6543_21 = BigDecimal.new("6543.21")
+    @bg5667_19 = BigDecimal.new("5667.19")
+    @a = BigDecimal("1.0000000000000000000000000000000000000000005")
+    @b = BigDecimal("1.00000000000000000000000000000000000000000005")
+    @bigint = BigDecimal("1000.0")
+    @nan = BigDecimal("NaN")
+    @infinity = BigDecimal("Infinity")
+    @infinity_minus = BigDecimal("-Infinity")
+  end
+
+  it "tests for equality" do
+    @bg6543_21.send(@method, @bg6543_21).should == true
+    @a.send(@method, @a).should == true
+    @a.send(@method, @b).should == false
+    @bg6543_21.send(@method, @a).should == false
+    @bigint.send(@method, 1000).should == true
+  end
+
+  it "returns false for NaN as it is never equal to any number" do
+    @nan.send(@method, @nan).should == false
+    @a.send(@method, @nan).should == false
+    @nan.send(@method, @a).should == false
+    @nan.send(@method, @infinity).should == false
+    @nan.send(@method, @infinity_minus).should == false
+    @infinity.send(@method, @nan).should == false
+    @infinity_minus.send(@method, @nan).should == false
+  end
+
+  it "returns true for infinity values with the same sign" do
+    @infinity.send(@method, @infinity).should == true
+    @infinity.send(@method, BigDecimal("Infinity")).should == true
+    BigDecimal("Infinity").send(@method, @infinity).should == true
+
+    @infinity_minus.send(@method, @infinity_minus).should == true
+    @infinity_minus.send(@method, BigDecimal("-Infinity")).should == true
+    BigDecimal("-Infinity").send(@method, @infinity_minus).should == true
+  end
+
+  it "returns false for infinity values with different signs" do
+    @infinity.send(@method, @infinity_minus).should == false
+    @infinity_minus.send(@method, @infinity).should == false
+  end
+
+  it "returns false when infinite value compared to finite one" do
+    @infinity.send(@method, @a).should == false
+    @infinity_minus.send(@method, @a).should == false
+
+    @a.send(@method, @infinity).should == false
+    @a.send(@method, @infinity_minus).should == false
+  end
+
+  it "returns false when compared objects that can not be coerced into BigDecimal" do
+    @infinity.send(@method, nil).should == false
+    @bigint.send(@method, nil).should == false
+    @nan.send(@method, nil).should == false
+  end
+end