1 files changed, 51 insertions, 54 deletions
diff --git a/spec/ruby/library/matrix/diagonal_spec.rb b/spec/ruby/library/matrix/diagonal_spec.rb
index 8c82433fde..ef9738e73e 100644
--- a/spec/ruby/library/matrix/diagonal_spec.rb
+++ b/spec/ruby/library/matrix/diagonal_spec.rb
@@ -1,75 +1,72 @@
 require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require 'matrix'
 
-ruby_version_is ""..."3.1" do
-  require_relative 'fixtures/classes'
-  require 'matrix'
-
-  describe "Matrix.diagonal" do
-    before :each do
-      @m = Matrix.diagonal(10, 11, 12, 13, 14)
-    end
+describe "Matrix.diagonal" do
+  before :each do
+    @m = Matrix.diagonal(10, 11, 12, 13, 14)
+  end
 
-    it "returns an object of type Matrix" do
-      @m.should be_kind_of(Matrix)
-    end
+  it "returns an object of type Matrix" do
+    @m.should be_kind_of(Matrix)
+  end
 
-    it "returns a square Matrix of the right size" do
-      @m.column_size.should == 5
-      @m.row_size.should == 5
-    end
+  it "returns a square Matrix of the right size" do
+    @m.column_size.should == 5
+    @m.row_size.should == 5
+  end
 
-    it "sets the diagonal to the arguments" do
-      (0..4).each do |i|
-        @m[i, i].should == i + 10
-      end
+  it "sets the diagonal to the arguments" do
+    (0..4).each do |i|
+      @m[i, i].should == i + 10
     end
+  end
 
-    it "fills all non-diagonal cells with 0" do
-      (0..4).each do |i|
-        (0..4).each do |j|
-          if i != j
-            @m[i, j].should == 0
-          end
+  it "fills all non-diagonal cells with 0" do
+    (0..4).each do |i|
+      (0..4).each do |j|
+        if i != j
+          @m[i, j].should == 0
         end
       end
     end
+  end
 
-    describe "for a subclass of Matrix" do
-      it "returns an instance of that subclass" do
-        MatrixSub.diagonal(1).should be_an_instance_of(MatrixSub)
-      end
+  describe "for a subclass of Matrix" do
+    it "returns an instance of that subclass" do
+      MatrixSub.diagonal(1).should be_an_instance_of(MatrixSub)
     end
   end
+end
 
-  describe "Matrix.diagonal?" do
-    it "returns true for a diagonal Matrix" do
-      Matrix.diagonal([1, 2, 3]).diagonal?.should be_true
-    end
+describe "Matrix.diagonal?" do
+  it "returns true for a diagonal Matrix" do
+    Matrix.diagonal([1, 2, 3]).diagonal?.should be_true
+  end
 
-    it "returns true for a zero square Matrix" do
-      Matrix.zero(3).diagonal?.should be_true
-    end
+  it "returns true for a zero square Matrix" do
+    Matrix.zero(3).diagonal?.should be_true
+  end
 
-    it "returns false for a non diagonal square Matrix" do
-      Matrix[[0, 1], [0, 0]].diagonal?.should be_false
-      Matrix[[1, 2, 3], [1, 2, 3], [1, 2, 3]].diagonal?.should be_false
-    end
+  it "returns false for a non diagonal square Matrix" do
+    Matrix[[0, 1], [0, 0]].diagonal?.should be_false
+    Matrix[[1, 2, 3], [1, 2, 3], [1, 2, 3]].diagonal?.should be_false
+  end
 
-    it "returns true for an empty 0x0 matrix" do
-      Matrix.empty(0,0).diagonal?.should be_true
-    end
+  it "returns true for an empty 0x0 matrix" do
+    Matrix.empty(0,0).diagonal?.should be_true
+  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.diagonal?
-        }.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.diagonal?
+      }.should raise_error(Matrix::ErrDimensionMismatch)
     end
   end
 end