1 files changed, 20 insertions, 17 deletions
diff --git a/spec/ruby/library/matrix/row_vectors_spec.rb b/spec/ruby/library/matrix/row_vectors_spec.rb
index 6f99c439a6..d01a4ca10d 100644
--- a/spec/ruby/library/matrix/row_vectors_spec.rb
+++ b/spec/ruby/library/matrix/row_vectors_spec.rb
@@ -1,26 +1,29 @@
 require_relative '../../spec_helper'
-require 'matrix'
 
-describe "Matrix#row_vectors" do
+ruby_version_is ""..."3.1" do
+  require 'matrix'
 
-  before :each do
-    @vectors = Matrix[ [1,2], [3,4] ].row_vectors
-  end
+  describe "Matrix#row_vectors" do
 
-  it "returns an Array" do
-    Matrix[ [1,2], [3,4] ].row_vectors.should be_an_instance_of(Array)
-  end
+    before :each do
+      @vectors = Matrix[ [1,2], [3,4] ].row_vectors
+    end
 
-  it "returns an Array of Vectors" do
-    @vectors.all? {|v| v.should be_an_instance_of(Vector)}
-  end
+    it "returns an Array" do
+      Matrix[ [1,2], [3,4] ].row_vectors.should be_an_instance_of(Array)
+    end
 
-  it "returns each row as a Vector" do
-    @vectors.should == [Vector[1,2], Vector[3,4]]
-  end
+    it "returns an Array of Vectors" do
+      @vectors.all? {|v| v.should be_an_instance_of(Vector)}
+    end
+
+    it "returns each row as a Vector" do
+      @vectors.should == [Vector[1,2], Vector[3,4]]
+    end
 
-  it "returns an empty Array for empty matrices" do
-    Matrix[].row_vectors.should == []
-    Matrix[ [] ].row_vectors.should == [ Vector[] ]
+    it "returns an empty Array for empty matrices" do
+      Matrix[].row_vectors.should == []
+      Matrix[ [] ].row_vectors.should == [ Vector[] ]
+    end
   end
 end