From 19fe6552c456e41c0b85816806399ca1609255c0 Mon Sep 17 00:00:00 2001 From: marcandre Date: Thu, 20 Sep 2018 18:24:16 +0000 Subject: Matrix: Add #reflexive? method. [Fix GH-1730] Adapted from a patch by Yilo git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64796 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- spec/ruby/library/matrix/reflexive_spec.rb | 31 ++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 spec/ruby/library/matrix/reflexive_spec.rb (limited to 'spec') diff --git a/spec/ruby/library/matrix/reflexive_spec.rb b/spec/ruby/library/matrix/reflexive_spec.rb new file mode 100644 index 0000000000..380fbb7ed6 --- /dev/null +++ b/spec/ruby/library/matrix/reflexive_spec.rb @@ -0,0 +1,31 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'matrix' + +ruby_version_is '2.6' do + describe "Matrix.reflexive?" do + it "returns true for a reflexive Matrix" do + Matrix[[1, 2, 3], [4, 1, 3], [5, 3, 1]].reflexive?.should be_true + end + + it "returns true for a 0x0 empty matrix" do + Matrix.empty.reflexive?.should be_true + end + + it "returns false for a non-reflexive Matrix" do + Matrix[[1, 1],[2, 2]].reflexive?.should be_false + end + + it "raises an error for non-square matrices" do + [ + Matrix[[0], [0]], + Matrix[[0, 0]], + Matrix.empty(0, 2), + Matrix.empty(2, 0), + ].each do |rectangular_matrix| + lambda { + rectangular_matrix.reflexive? + }.should raise_error(Matrix::ErrDimensionMismatch) + end + end + end +end -- cgit v1.2.3