1 files changed, 31 insertions, 11 deletions
diff --git a/spec/ruby/core/integer/even_spec.rb b/spec/ruby/core/integer/even_spec.rb
index c14cf84947..edc8b13dd9 100644
--- a/spec/ruby/core/integer/even_spec.rb
+++ b/spec/ruby/core/integer/even_spec.rb
@@ -1,20 +1,40 @@
 require File.expand_path('../../../spec_helper', __FILE__)
 
 describe "Integer#even?" do
-  it "returns true for a Fixnum when it is an even number" do
-    (-2).even?.should be_true
-    (-1).even?.should be_false
+  context "fixnum" do
+    it "returns true for a Fixnum when it is an even number" do
+      (-2).even?.should be_true
+      (-1).even?.should be_false
 
-    0.even?.should be_true
-    1.even?.should be_false
-    2.even?.should be_true
+      0.even?.should be_true
+      1.even?.should be_false
+      2.even?.should be_true
+    end
+
+    it "returns true for a Bignum when it is an even number" do
+      bignum_value(0).even?.should be_true
+      bignum_value(1).even?.should be_false
+
+      (-bignum_value(0)).even?.should be_true
+      (-bignum_value(1)).even?.should be_false
+    end
   end
 
-  it "returns true for a Bignum when it is an even number" do
-    bignum_value(0).even?.should be_true
-    bignum_value(1).even?.should be_false
+  context "bignum" do
+    it "returns true if self is even and positive" do
+      (10000**10).even?.should be_true
+    end
+
+    it "returns true if self is even and negative" do
+      (-10000**10).even?.should be_true
+    end
+
+    it "returns false if self is odd and positive" do
+      (9879**976).even?.should be_false
+    end
 
-    (-bignum_value(0)).even?.should be_true
-    (-bignum_value(1)).even?.should be_false
+    it "returns false if self is odd and negative" do
+      (-9879**976).even?.should be_false
+    end
   end
 end