mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
24 lines
447 B
Ruby
24 lines
447 B
Ruby
|
require File.expand_path('../../../spec_helper', __FILE__)
|
||
|
|
require 'matrix'
|
||
|
|
|
||
|
|
describe "Matrix#[]" do
|
||
|
|
|
||
|
|
before :all do
|
||
|
|
@m = Matrix[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, 10, 11]]
|
||
|
|
end
|
||
|
|
|
||
|
|
it "returns element at (i, j)" do
|
||
|
|
(0..3).each do |i|
|
||
|
|
(0..2).each do |j|
|
||
|
|
@m[i, j].should == (i * 3) + j
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
it "returns nil for an invalid index pair" do
|
||
|
|
@m[8,1].should be_nil
|
||
|
|
@m[1,8].should be_nil
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|