1 files changed, 15 insertions, 18 deletions
diff --git a/spec/ruby/library/matrix/lup_decomposition/determinant_spec.rb b/spec/ruby/library/matrix/lup_decomposition/determinant_spec.rb
index 1ac4bc971e..9d733066c1 100644
--- a/spec/ruby/library/matrix/lup_decomposition/determinant_spec.rb
+++ b/spec/ruby/library/matrix/lup_decomposition/determinant_spec.rb
@@ -1,24 +1,21 @@
 require_relative '../../../spec_helper'
+require 'matrix'
 
-ruby_version_is ""..."3.1" do
-  require 'matrix'
-
-  describe "Matrix::LUPDecomposition#determinant" do
-    it "returns the determinant when the matrix is square" do
-      a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]]
-      a.lup.determinant.should == 15120 # == a.determinant
-    end
+describe "Matrix::LUPDecomposition#determinant" do
+  it "returns the determinant when the matrix is square" do
+    a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]]
+    a.lup.determinant.should == 15120 # == a.determinant
+  end
 
-    it "raises an error for rectangular matrices" do
-      [
-        Matrix[[7, 8, 9], [14, 46, 51]],
-        Matrix[[7, 8], [14, 46], [28, 82]],
-      ].each do |m|
-        lup = m.lup
-        -> {
-          lup.determinant
-        }.should raise_error(Matrix::ErrDimensionMismatch)
-      end
+  it "raises an error for rectangular matrices" do
+    [
+      Matrix[[7, 8, 9], [14, 46, 51]],
+      Matrix[[7, 8], [14, 46], [28, 82]],
+    ].each do |m|
+      lup = m.lup
+      -> {
+        lup.determinant
+      }.should raise_error(Matrix::ErrDimensionMismatch)
     end
   end
 end