1 files changed, 19 insertions, 16 deletions
diff --git a/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvalues_spec.rb b/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvalues_spec.rb
index 7552b7616c..650d43d90f 100644
--- a/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvalues_spec.rb
+++ b/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvalues_spec.rb
@@ -1,22 +1,25 @@
 require_relative '../../../spec_helper'
-require 'matrix'
 
-describe "Matrix::EigenvalueDecomposition#eigenvalues" do
-  it "returns an array of complex eigenvalues for a rotation matrix" do
-    Matrix[[ 1, 1],
-           [-1, 1]].eigensystem.eigenvalues.sort_by{|v| v.imag}.should ==
-    [ Complex(1, -1), Complex(1, 1)]
-  end
+ruby_version_is ""..."3.1" do
+  require 'matrix'
 
-  it "returns an array of real eigenvalues for a symmetric matrix" do
-    Matrix[[1, 2],
-           [2, 1]].eigensystem.eigenvalues.sort.map!{|x| x.round(10)}.should ==
-    [ -1, 3 ]
-  end
+  describe "Matrix::EigenvalueDecomposition#eigenvalues" do
+    it "returns an array of complex eigenvalues for a rotation matrix" do
+      Matrix[[ 1, 1],
+             [-1, 1]].eigensystem.eigenvalues.sort_by{|v| v.imag}.should ==
+      [ Complex(1, -1), Complex(1, 1)]
+    end
+
+    it "returns an array of real eigenvalues for a symmetric matrix" do
+      Matrix[[1, 2],
+             [2, 1]].eigensystem.eigenvalues.sort.map!{|x| x.round(10)}.should ==
+      [ -1, 3 ]
+    end
 
-  it "returns an array of real eigenvalues for a matrix" do
-    Matrix[[14, 16],
-           [-6, -6]].eigensystem.eigenvalues.sort.map!{|x| x.round(10)}.should ==
-    [ 2, 6 ]
+    it "returns an array of real eigenvalues for a matrix" do
+      Matrix[[14, 16],
+             [-6, -6]].eigensystem.eigenvalues.sort.map!{|x| x.round(10)}.should ==
+      [ 2, 6 ]
+    end
   end
 end