1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
require File.dirname(__FILE__) + '/../../spec_helper'
require 'matrix'
describe "Matrix.diagonal" do
before(:each) do
@m = Matrix.diagonal(10, 11, 12, 13, 14)
end
it "returns an object of type Matrix" do
@m.class.should == Matrix
end
it "sets the diagonal to the arguments" do
(0..4).each do |i|
@m[i, i].should == i + 10
end
end
it "fills all non-diagonal cells with 0" do
(0..4).each do |i|
(0..4).each do |j|
if i != j
@m[i, j].should == 0
end
end
end
end
end
|
