1 files changed, 20 insertions, 0 deletions
diff --git a/spec/ruby/core/integer/integer_spec.rb b/spec/ruby/core/integer/integer_spec.rb
new file mode 100644
index 0000000000..2d5d2e3e92
--- /dev/null
+++ b/spec/ruby/core/integer/integer_spec.rb
@@ -0,0 +1,20 @@
+require_relative '../../spec_helper'
+
+describe "Integer" do
+  it "includes Comparable" do
+    Integer.include?(Comparable).should == true
+  end
+
+  it "is the class of both small and large integers" do
+    42.class.should equal(Integer)
+    bignum_value.class.should equal(Integer)
+  end
+end
+
+describe "Integer#integer?" do
+  it "returns true for Integers" do
+    0.should.integer?
+    -1.should.integer?
+    bignum_value.should.integer?
+  end
+end