From 1d15d5f08032acf1b7bceacbb450d617ff6e0931 Mon Sep 17 00:00:00 2001 From: eregon Date: Wed, 20 Sep 2017 20:18:52 +0000 Subject: Move spec/rubyspec to spec/ruby for consistency * Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- spec/ruby/library/matrix/rank_spec.rb | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 spec/ruby/library/matrix/rank_spec.rb (limited to 'spec/ruby/library/matrix/rank_spec.rb') diff --git a/spec/ruby/library/matrix/rank_spec.rb b/spec/ruby/library/matrix/rank_spec.rb new file mode 100644 index 0000000000..42b6de1ab8 --- /dev/null +++ b/spec/ruby/library/matrix/rank_spec.rb @@ -0,0 +1,19 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'matrix' + +describe "Matrix#rank" do + it "returns the rank of the Matrix" do + Matrix[ [7,6], [3,9] ].rank.should == 2 + end + + it "doesn't loop forever" do + Matrix[ [1,2,3], [4,5,6], [7,8,9] ].rank.should == 2 + Matrix[ [1, 2, 0, 3], [1, -2, 3, 0], [0, 0, 4, 8], [2, 4, 0, 6] ].rank. + should == 3 + end + + it "works for some easy rectangular matrices" do + Matrix[[0,0],[0,0],[1,0]].rank.should == 1 + Matrix[[0,1],[0,0],[1,0]].rank.should == 2 + end +end -- cgit v1.2.3