File: trace.rb

package info (click to toggle)
ruby2.5 2.5.5-3%2Bdeb10u4
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 101,532 kB
  • sloc: ruby: 732,598; ansic: 669,262; xml: 25,363; yacc: 20,963; javascript: 6,680; sh: 3,610; lisp: 2,627; makefile: 596; python: 198; sed: 76; perl: 62; awk: 36; asm: 35
file content (12 lines) | stat: -rw-r--r-- 343 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
 
require 'matrix'

describe :trace, shared: true do
  it "returns the sum of diagonal elements in a square Matrix" do
    Matrix[[7,6], [3,9]].trace.should == 16
  end

  it "returns the sum of diagonal elements in a rectangular Matrix" do
    lambda{ Matrix[[1,2,3], [4,5,6]].trace}.should raise_error(Matrix::ErrDimensionMismatch)
  end

end