1 files changed, 19 insertions, 0 deletions
diff --git a/spec/ruby/core/float/finite_spec.rb b/spec/ruby/core/float/finite_spec.rb
new file mode 100644
index 0000000000..d839b30e32
--- /dev/null
+++ b/spec/ruby/core/float/finite_spec.rb
@@ -0,0 +1,19 @@
+require_relative '../../spec_helper'
+
+describe "Float#finite?" do
+  it "returns true for finite values" do
+    3.14159.should.finite?
+  end
+
+  it "returns false for positive infinity" do
+    infinity_value.should_not.finite?
+  end
+
+  it "returns false for negative infinity" do
+    (-infinity_value).should_not.finite?
+  end
+
+  it "returns false for NaN" do
+    nan_value.should_not.finite?
+  end
+end