1 files changed, 9 insertions, 4 deletions
diff --git a/spec/ruby/core/integer/fdiv_spec.rb b/spec/ruby/core/integer/fdiv_spec.rb
index d99a19eb0f..7854d66dec 100644
--- a/spec/ruby/core/integer/fdiv_spec.rb
+++ b/spec/ruby/core/integer/fdiv_spec.rb
@@ -55,13 +55,18 @@ describe "Integer#fdiv" do
     num.fdiv(den).should == -0.5555555555555556
   end
 
+  it "rounds to the correct float for bignum denominators" do
+    1.fdiv(10**324).should == 0.0
+    1.fdiv(10**323).should == 1.0e-323
+  end
+
   it "performs floating-point division between self and a Float" do
     8.fdiv(9.0).should be_close(0.888888888888889, TOLERANCE)
   end
 
   it "returns NaN when the argument is NaN" do
-    -1.fdiv(nan_value).nan?.should be_true
-    1.fdiv(nan_value).nan?.should be_true
+    -1.fdiv(nan_value).nan?.should == true
+    1.fdiv(nan_value).nan?.should == true
   end
 
   it "returns Infinity when the argument is 0" do
@@ -81,11 +86,11 @@ describe "Integer#fdiv" do
   end
 
   it "raises a TypeError when argument isn't numeric" do
-    -> { 1.fdiv(mock('non-numeric')) }.should raise_error(TypeError)
+    -> { 1.fdiv(mock('non-numeric')) }.should.raise(TypeError)
   end
 
   it "raises an ArgumentError when passed multiple arguments" do
-    -> { 1.fdiv(6,0.2) }.should raise_error(ArgumentError)
+    -> { 1.fdiv(6,0.2) }.should.raise(ArgumentError)
   end
 
   it "follows the coercion protocol" do