1 files changed, 24 insertions, 0 deletions
diff --git a/spec/rubyspec/core/numeric/denominator_spec.rb b/spec/rubyspec/core/numeric/denominator_spec.rb
new file mode 100644
index 0000000000..3ae4530c18
--- /dev/null
+++ b/spec/rubyspec/core/numeric/denominator_spec.rb
@@ -0,0 +1,24 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Numeric#denominator" do
+  # The Numeric child classes override this method, so their behaviour is
+  # specified in the appropriate place
+  before :each do
+    @numbers = [
+      20,             # Integer
+      99999999**99,   # Bignum
+    ]
+  end
+
+  it "returns 1" do
+    @numbers.each {|number| number.denominator.should == 1}
+  end
+
+  it "works with Numeric subclasses" do
+    rational = mock_numeric('rational')
+    rational.should_receive(:denominator).and_return(:denominator)
+    numeric = mock_numeric('numeric')
+    numeric.should_receive(:to_r).and_return(rational)
+    numeric.denominator.should == :denominator
+  end
+end