I have several console applications that have a read, evaluate, print, loop (REPL) using readline that I would like to create tests for using RSpec if possible. I've read about mock classes, but I don't see how they would work. Is it only possible to replace a real input class to test the rest of the classes? I want to do an integration test of the whole app. For one of my web services, I have an rspec script that uses curl to send requests to test the socket interface. I wanted to do something similar for the console interface. Am I just not understanding the concept of mock classes?
<h2>Answer</h2>
Based on the answer @Dave Schweisguth gave, I tried this:
I moved the spawn out so I can add other tests. I'm new to rspec so that may not be the cleanest solution.
While researching PTY, I found <a href="https://devver.wordpress.com/2009/10/12/ruby-subprocesses-part_3/" rel="nofollow">this article</a> on sub-processes that covers popen, pty, and others.
<h2>Answer</h2>
Based on the answer @Dave Schweisguth gave, I tried this:
Code:
require 'rspec'
require 'pty'
describe "anthematic" do
before(:all) do
@output, @input = PTY.spawn('bin/anthematic')
end
it "turns on a zone" do
@output.readpartial 1024 # read past the prompt
@input.puts "on 1"
expect(@output.readline.chomp).to eq("on 1")
expect(@output.readline.chomp).to eq("turn on zone 1")
end
endI moved the spawn out so I can add other tests. I'm new to rspec so that may not be the cleanest solution.
While researching PTY, I found <a href="https://devver.wordpress.com/2009/10/12/ruby-subprocesses-part_3/" rel="nofollow">this article</a> on sub-processes that covers popen, pty, and others.