/spec/driver/readline_spec.rb

 1require File.expand_path("../../spec_helper", __FILE__)
 2require "irb/driver/readline"
 3
 4module Readline
 5  extend InputStubMixin
 6  extend OutputStubMixin
 7
 8  def self.input=(input)
 9    @given_input = input
10  end
11
12  def self.given_input
13    @given_input
14  end
15
16  def self.output=(output)
17    @given_output = output
18  end
19
20  def self.given_output
21    @given_output
22  end
23
24  def self.use_history=(use_history)
25    @use_history = use_history
26  end
27
28  def self.use_history
29    @use_history
30  end
31
32  def self.readline(prompt, use_history)
33    @use_history = use_history
34    print prompt
35    @input.shift
36  end
37end
38
39describe "IRB::Driver::Readline" do
40  before do
41    @driver = IRB::Driver::Readline.new(InputStub.new, OutputStub.new)
42    @context = IRB::Context.new(Object.new)
43    @driver.context_stack << @context
44  end
45
46  it "is a subclass of IRB::Driver::TTY" do
47    IRB::Driver::Readline.superclass.should == IRB::Driver::TTY
48  end
49
50  it "assigns the given input and output to the Readline module" do
51    Readline.given_input.should == @driver.input
52    Readline.given_output.should == @driver.output
53  end
54
55  it "assigns a completion object" do
56    Readline.completion_proc.class.should == IRB::Completion
57  end
58
59  it "reads a line through the Readline module" do
60    Readline.stub_input "nom nom nom"
61    @driver.readline.should == "nom nom nom"
62  end
63
64  it "tells the Readline module to use the history" do
65    Readline.use_history = false
66    Readline.stub_input "nom nom nom"
67    @driver.readline
68    Readline.use_history.should == true
69  end
70end