spec/ruby/core/fiber/kill_spec.rb


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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90

require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative '../../shared/kernel/raise'

ruby_version_is "3.3" do
  describe "Fiber#kill" do
    it "kills a non-resumed fiber" do
      fiber = Fiber.new{}

      fiber.alive?.should == true

      fiber.kill
      fiber.alive?.should == false
    end

    it "kills a resumed fiber" do
      fiber = Fiber.new{while true; Fiber.yield; end}
      fiber.resume

      fiber.alive?.should == true

      fiber.kill
      fiber.alive?.should == false
    end

    it "can kill itself" do
      fiber = Fiber.new do
        Fiber.current.kill
      end

      fiber.alive?.should == true

      fiber.resume
      fiber.alive?.should == false
    end

    it "kills a resumed fiber from a child" do
      parent = Fiber.new do
        child = Fiber.new do
          parent.kill
          parent.alive?.should == true
        end

        child.resume
      end

      parent.resume
      parent.alive?.should == false
    end

    it "executes the ensure block" do
      ensure_executed = false

      fiber = Fiber.new do
        while true; Fiber.yield; end
      ensure
        ensure_executed = true
      end

      fiber.resume
      fiber.kill
      ensure_executed.should == true
    end

    it "does not execute rescue block" do
      rescue_executed = false

      fiber = Fiber.new do
        while true; Fiber.yield; end
      rescue Exception
        rescue_executed = true
      end

      fiber.resume
      fiber.kill
      rescue_executed.should == false
    end

    it "repeatedly kills a fiber" do
      fiber = Fiber.new do
        while true; Fiber.yield; end
      ensure
        while true; Fiber.yield; end
      end

      fiber.kill
      fiber.alive?.should == false
    end
  end
end