1 files changed, 27 insertions, 25 deletions
diff --git a/spec/ruby/library/matrix/antisymmetric_spec.rb b/spec/ruby/library/matrix/antisymmetric_spec.rb
index e5b2d51758..56347a1a22 100644
--- a/spec/ruby/library/matrix/antisymmetric_spec.rb
+++ b/spec/ruby/library/matrix/antisymmetric_spec.rb
@@ -1,35 +1,37 @@
 require File.expand_path('../../../spec_helper', __FILE__)
 require 'matrix'
 
-describe "Matrix#antisymmetric?" do
-  it "returns true for an antisymmetric Matrix" do
-    Matrix[[0, -2, Complex(1, 3)], [2, 0, 5], [-Complex(1, 3), -5, 0]].antisymmetric?.should be_true
-  end
+ruby_version_is "2.6" do
+  describe "Matrix#antisymmetric?" do
+    it "returns true for an antisymmetric Matrix" do
+      Matrix[[0, -2, Complex(1, 3)], [2, 0, 5], [-Complex(1, 3), -5, 0]].antisymmetric?.should be_true
+    end
 
-  it "returns true for a 0x0 empty matrix" do
-    Matrix.empty.antisymmetric?.should be_true
-  end
+    it "returns true for a 0x0 empty matrix" do
+      Matrix.empty.antisymmetric?.should be_true
+    end
 
-  it "returns false for non-antisymmetric matrices" do
-    [
-      Matrix[[1, 2, 3], [4, 5, 6], [7, 8, 9]],
-      Matrix[[1, -2, 3], [2, 0, 6], [-3, -6, 0]],  # wrong diagonal element
-      Matrix[[0, 2, -3], [2, 0, 6], [-3, 6, 0]]    # only signs wrong
-    ].each do |matrix|
-      matrix.antisymmetric?.should be_false
+    it "returns false for non-antisymmetric matrices" do
+      [
+        Matrix[[1, 2, 3], [4, 5, 6], [7, 8, 9]],
+        Matrix[[1, -2, 3], [2, 0, 6], [-3, -6, 0]],  # wrong diagonal element
+        Matrix[[0, 2, -3], [2, 0, 6], [-3, 6, 0]]    # only signs wrong
+      ].each do |matrix|
+        matrix.antisymmetric?.should be_false
+      end
     end
-  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|
-      lambda {
-        rectangular_matrix.antisymmetric?
-      }.should raise_error(Matrix::ErrDimensionMismatch)
+    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|
+        lambda {
+          rectangular_matrix.antisymmetric?
+        }.should raise_error(Matrix::ErrDimensionMismatch)
+      end
     end
   end
 end