summaryrefslogtreecommitdiff
path: root/spec/regression/readline_spec.rb
blob: 19dad754b32dd27b7240e0b43b3fb27b986b8650 (plain)
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
32
33
34
35
36
37
38
39
# These specs ensure that Pry doesn't require readline until the first time a
# REPL is started.

require "helper"
require "shellwords"

describe "Readline" do
  before do
    @ruby    = RbConfig.ruby.shellescape
    @pry_dir = File.expand_path(File.join(__FILE__, '../../../lib')).shellescape
  end

  it "is not loaded on requiring 'pry'" do
    code = <<-RUBY
      require "pry"
      p defined?(Readline)
    RUBY
    expect(`#@ruby -I #@pry_dir -e '#{code}'`).to eq("nil\n")
  end

  it "is loaded on invoking 'pry'" do
    code = <<-RUBY
      require "pry"
      Pry.start self, input: StringIO.new("exit-all"), output: StringIO.new
      puts defined?(Readline)
    RUBY
    expect(`#@ruby -I #@pry_dir -e '#{code}'`.end_with?("constant\n")).to eq(true)
  end

  it "is not loaded on invoking 'pry' if Pry.input is set" do
    code = <<-RUBY
      require "pry"
      Pry.input = StringIO.new("exit-all")
      Pry.start self, output: StringIO.new
      p defined?(Readline)
    RUBY
    expect(`#@ruby -I #@pry_dir -e '#{code}'`.end_with?("nil\n")).to eq(true)
  end
end