1 files changed, 19 insertions, 0 deletions
diff --git a/spec/ruby/core/numeric/abs_spec.rb b/spec/ruby/core/numeric/abs_spec.rb
new file mode 100644
index 0000000000..4b16e06c97
--- /dev/null
+++ b/spec/ruby/core/numeric/abs_spec.rb
@@ -0,0 +1,19 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Numeric#abs" do
+  before :each do
+    @obj = NumericSpecs::Subclass.new
+  end
+
+  it "returns self when self is greater than 0" do
+    @obj.should_receive(:<).with(0).and_return(false)
+    @obj.abs.should == @obj
+  end
+
+  it "returns self\#@- when self is less than 0" do
+    @obj.should_receive(:<).with(0).and_return(true)
+    @obj.should_receive(:-@).and_return(:absolute_value)
+    @obj.abs.should == :absolute_value
+  end
+end