spec/ruby/library/matrix/square_spec.rb


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
29
30
31

require_relative '../../spec_helper'

ruby_version_is ""..."3.1" do
  require 'matrix'

  describe "Matrix#square?" do

    it "returns true when the Matrix is square" do
      Matrix[ [1,2], [2,4] ].square?.should be_true
      Matrix[ [100,3,5], [9.5, 4.9, 8], [2,0,77] ].square?.should be_true
    end

    it "returns true when the Matrix has only one element" do
      Matrix[ [9] ].square?.should be_true
    end

    it "returns false when the Matrix is rectangular" do
      Matrix[ [1, 2] ].square?.should be_false
    end

    it "returns false when the Matrix is rectangular" do
      Matrix[ [1], [2] ].square?.should be_false
    end

    it "returns handles empty matrices" do
      Matrix[].square?.should be_true
      Matrix[[]].square?.should be_false
      Matrix.columns([[]]).square?.should be_false
    end
  end
end