1 files changed, 36 insertions, 0 deletions
diff --git a/spec/ruby/core/float/comparison_spec.rb b/spec/ruby/core/float/comparison_spec.rb
new file mode 100644
index 0000000000..49c3debbe1
--- /dev/null
+++ b/spec/ruby/core/float/comparison_spec.rb
@@ -0,0 +1,36 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Float#<=>" do
+  it "returns -1, 0, 1 when self is less than, equal, or greater than other" do
+    (1.5 <=> 5).should == -1
+    (2.45 <=> 2.45).should == 0
+    ((bignum_value*1.1) <=> bignum_value).should == 1
+  end
+
+  it "returns nil when either argument is NaN" do
+    (nan_value <=> 71.2).should be_nil
+    (1771.176 <=> nan_value).should be_nil
+  end
+
+  it "returns nil when the given argument is not a Float" do
+    (1.0 <=> "1").should be_nil
+  end
+
+  # The 4 tests below are taken from matz's revision 23730 for Ruby trunk
+  #
+  it "returns 1 when self is Infinity and other is a Bignum" do
+    (infinity_value <=> Float::MAX.to_i*2).should == 1
+  end
+
+  it "returns -1 when self is negative and other is Infinty" do
+    (-Float::MAX.to_i*2 <=> infinity_value).should == -1
+  end
+
+  it "returns -1 when self is -Infinity and other is negative" do
+    (-infinity_value <=> -Float::MAX.to_i*2).should == -1
+  end
+
+  it "returns 1 when self is negative and other is -Infinity" do
+    (-Float::MAX.to_i*2 <=> -infinity_value).should == 1
+  end
+end