mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
95e8c48dd3
* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
24 lines
1 KiB
Ruby
24 lines
1 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
|
|
require 'matrix'
|
|
|
|
describe "Matrix.lower_triangular?" do
|
|
it "returns true for a square lower triangular Matrix" do
|
|
Matrix[[1, 0, 0], [1, 2, 0], [1, 2, 3]].lower_triangular?.should be_true
|
|
Matrix.diagonal([1, 2, 3]).lower_triangular?.should be_true
|
|
Matrix[[1, 0], [1, 2], [1, 2], [1, 2]].lower_triangular?.should be_true
|
|
Matrix[[1, 0, 0, 0], [1, 2, 0, 0]].lower_triangular?.should be_true
|
|
end
|
|
|
|
it "returns true for an empty Matrix" do
|
|
Matrix.empty(3, 0).lower_triangular?.should be_true
|
|
Matrix.empty(0, 3).lower_triangular?.should be_true
|
|
Matrix.empty(0, 0).lower_triangular?.should be_true
|
|
end
|
|
|
|
it "returns false for a non lower triangular square Matrix" do
|
|
Matrix[[0, 1], [0, 0]].lower_triangular?.should be_false
|
|
Matrix[[1, 2, 3], [1, 2, 3], [1, 2, 3]].lower_triangular?.should be_false
|
|
Matrix[[0, 1], [0, 0], [0, 0], [0, 0]].lower_triangular?.should be_false
|
|
Matrix[[0, 0, 0, 1], [0, 0, 0, 0]].lower_triangular?.should be_false
|
|
end
|
|
end
|