RSpec intercepting backticks, preventing sudo?

Question

I'm porting some code from MiniTest to RSpec. Said code now fails.

In IRB:

`sudo echo 1`   # returns 1

RSpec:

# example.rb
class Example
  def self.doexec
    `sudo echo 1`
  end
end

# example_spec.rb
it '#doexec' do
  Example.doexec.should include("1")
end

...when executed:

rspec spec/lib/example_spec.rb
# spec fails, stderror:
sudo: no tty present and no askpass program specified

Is this a bug, feature, or any idea of how to work it (without hardwiring in the password)?

You should run it from console.. then it will ask you root password, and you need to give it, and then it will run. — Arup Rakshit, Jul 16 '14 at 18:43

score 0 · Answer 1 · edited May 23 '17 at 12:29

Here is a way, you can try :-

test.rb

#!/usr/bin/env ruby

class Example
  def self.do_this
    `echo <your password> | sudo -S echo 11`
  end
end

test_spec.rb

require_relative "../test.rb"

describe Example do
  it '#do_this' do
    expect(Example.do_this).to include("1")
  end
end

Now run your file :-

arup@linux-wzza:~/Ruby> rspec spec/test_spec.rb
root's password:.

Finished in 0.07274 seconds (files took 0.13673 seconds to load)
1 example, 0 failures

Read this post.

RSpec intercepting backticks, preventing sudo?

1 Answers1

test.rb

test_spec.rb