1 files changed, 23 insertions, 27 deletions
diff --git a/spec/ruby/library/matrix/unitary_spec.rb b/spec/ruby/library/matrix/unitary_spec.rb
index b579cb244d..c214ee9b2f 100644
--- a/spec/ruby/library/matrix/unitary_spec.rb
+++ b/spec/ruby/library/matrix/unitary_spec.rb
@@ -1,36 +1,32 @@
 require_relative '../../spec_helper'
 
-ruby_version_is ""..."3.1" do
-  require 'matrix'
+require 'matrix'
 
-  describe "Matrix.unitary?" do
-    it "returns false for non unitary matrices" do
-      Matrix[[0, 1], [1, 2]].should_not.unitary?
-      Matrix[[0, Complex(0, 2)], [Complex(0, 2), 0]].should_not.unitary?
-      Matrix[[1, 1, 0], [0, 1, 1], [1, 0, 1]].should_not.unitary?
-    end
+describe "Matrix.unitary?" do
+  it "returns false for non unitary matrices" do
+    Matrix[[0, 1], [1, 2]].should_not.unitary?
+    Matrix[[0, Complex(0, 2)], [Complex(0, 2), 0]].should_not.unitary?
+    Matrix[[1, 1, 0], [0, 1, 1], [1, 0, 1]].should_not.unitary?
+  end
 
-    it "returns true for unitary matrices" do
-      Matrix[[0, Complex(0, 1)], [Complex(0, 1), 0]].should.unitary?
-    end
+  it "returns true for unitary matrices" do
+    Matrix[[0, Complex(0, 1)], [Complex(0, 1), 0]].should.unitary?
+  end
 
-    version_is((Matrix::const_defined?(:VERSION) ? Matrix::VERSION : "0.1.0"), "0.3.0") do
-      it "returns true for unitary matrices with a Complex and a negative #imag" do
-        Matrix[[0, Complex(0, 1)], [Complex(0, -1), 0]].should.unitary?
-      end
-    end
+  it "returns true for unitary matrices with a Complex and a negative #imag" do
+    Matrix[[0, Complex(0, 1)], [Complex(0, -1), 0]].should.unitary?
+  end
 
-    it "raises an error for rectangular matrices" do
-      [
-        Matrix[[0], [0]],
-        Matrix[[0, 0]],
-        Matrix.empty(0, 2),
-        Matrix.empty(2, 0),
-      ].each do |rectangular_matrix|
-        -> {
-          rectangular_matrix.unitary?
-        }.should raise_error(Matrix::ErrDimensionMismatch)
-      end
+  it "raises an error for rectangular matrices" do
+    [
+      Matrix[[0], [0]],
+      Matrix[[0, 0]],
+      Matrix.empty(0, 2),
+      Matrix.empty(2, 0),
+    ].each do |rectangular_matrix|
+      -> {
+        rectangular_matrix.unitary?
+      }.should raise_error(Matrix::ErrDimensionMismatch)
     end
   end
 end