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ruby--ruby/spec/ruby/library/matrix/lup_decomposition/u_spec.rb
eregon 401b64c4e8 Update to ruby/spec@c1b568b
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-03-04 15:09:32 +00:00

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Ruby

require_relative '../../../spec_helper'
require 'matrix'
describe "Matrix::LUPDecomposition#u" do
before :each do
@a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]]
@lu = Matrix::LUPDecomposition.new(@a)
@u = @lu.u
end
it "returns the second element of to_a" do
@u.should == @lu.to_a[1]
end
it "returns an upper triangular matrix" do
@u.upper_triangular?.should be_true
end
end