1 files changed, 17 insertions, 14 deletions
diff --git a/spec/ruby/library/prime/integer/prime_division_spec.rb b/spec/ruby/library/prime/integer/prime_division_spec.rb
index be03438a6f..03be0be27b 100644
--- a/spec/ruby/library/prime/integer/prime_division_spec.rb
+++ b/spec/ruby/library/prime/integer/prime_division_spec.rb
@@ -1,19 +1,22 @@
 require_relative '../../../spec_helper'
-require 'prime'
 
-describe "Integer#prime_division" do
-  it "returns an array of a prime factor and a corresponding exponent" do
-    (2*3*5*7*11*13*17).prime_division.should ==
-      [[2,1], [3,1], [5,1], [7,1], [11,1], [13,1], [17,1]]
-  end
+ruby_version_is ""..."3.1" do
+  require 'prime'
 
-  it "returns an empty array for 1" do
-    1.prime_division.should == []
-  end
-  it "returns an empty array for -1" do
-    -1.prime_division.should == [[-1, 1]]
-  end
-  it "raises ZeroDivisionError for 0" do
-    -> { 0.prime_division }.should raise_error(ZeroDivisionError)
+  describe "Integer#prime_division" do
+    it "returns an array of a prime factor and a corresponding exponent" do
+      (2*3*5*7*11*13*17).prime_division.should ==
+        [[2,1], [3,1], [5,1], [7,1], [11,1], [13,1], [17,1]]
+    end
+
+    it "returns an empty array for 1" do
+      1.prime_division.should == []
+    end
+    it "returns an empty array for -1" do
+      -1.prime_division.should == [[-1, 1]]
+    end
+    it "raises ZeroDivisionError for 0" do
+      -> { 0.prime_division }.should raise_error(ZeroDivisionError)
+    end
   end
 end