require File.expand_path('../../../spec_helper', __FILE__)

ruby_version_is "2.4" do
  describe "Complex#finite?" do
    it "returns true if magnitude is finite" do
      (1+1i).finite?.should == true
    end

    it "returns false for positive infinity" do
      value = Complex(Float::INFINITY, 42)
      value.finite?.should == false
    end

    it "returns false for positive complex with infinite imaginary" do
      value = Complex(1, Float::INFINITY)
      value.finite?.should == false
    end

    it "returns false for negative infinity" do
      value = -Complex(Float::INFINITY, 42)
      value.finite?.should == false
    end

    it "returns false for negative complex with infinite imaginary" do
      value = -Complex(1, Float::INFINITY)
      value.finite?.should == false
    end

    ruby_bug "#14014", "2.4"..."2.5" do
      it "returns false for NaN" do
        value = Complex(Float::NAN, Float::NAN)
        value.finite?.should == false
      end
    end
  end
end

require File.expand_path('../../../spec_helper', __FILE__)

ruby_version_is "2.4" do
  describe "Complex#finite?" do
    it "returns true if magnitude is finite" do
      (1+1i).finite?.should == true
    end

    it "returns false for positive infinity" do
      value = Complex(Float::INFINITY, 42)
      value.finite?.should == false
    end

    it "returns false for positive complex with infinite imaginary" do
      value = Complex(1, Float::INFINITY)
      value.finite?.should == false
    end

    it "returns false for negative infinity" do
      value = -Complex(Float::INFINITY, 42)
      value.finite?.should == false
    end

    it "returns false for negative complex with infinite imaginary" do
      value = -Complex(1, Float::INFINITY)
      value.finite?.should == false
    end

    it "returns true for NaN" do
      value = Complex(Float::NAN, Float::NAN)
      value.finite?.should == true
    end
  end
end

--- 
+++ 
@@ -26,9 +26,11 @@
       value.finite?.should == false
     end
 
-    it "returns true for NaN" do
-      value = Complex(Float::NAN, Float::NAN)
-      value.finite?.should == true
+    ruby_bug "#14014", "2.4"..."2.5" do
+      it "returns false for NaN" do
+        value = Complex(Float::NAN, Float::NAN)
+        value.finite?.should == false
+      end
     end
   end
 end
Mark behavior with the reported upstream bug

* Fixed in trunk, not yet in 2.4.
* See https://bugs.ruby-lang.org/issues/14014
