require_relative '../../spec_helper'

require 'fiber'

describe "Fiber.current" do
  it "returns the root Fiber when called outside of a Fiber" do
    root = Fiber.current
    root.should be_an_instance_of(Fiber)
    # We can always transfer to the root Fiber; it will never die
    5.times do
      root.transfer.should be_nil
      root.alive?.should be_true
    end
  end

  it "returns the current Fiber when called from a Fiber" do
    fiber = Fiber.new do
      this = Fiber.current
      this.should be_an_instance_of(Fiber)
      this.should == fiber
      this.alive?.should be_true
    end
    fiber.resume
  end

  it "returns the current Fiber when called from a Fiber that transferred to another" do
    states = []
    fiber = Fiber.new do
      states << :fiber
      this = Fiber.current
      this.should be_an_instance_of(Fiber)
      this.should == fiber
      this.alive?.should be_true
    end

    fiber2 = Fiber.new do
      states << :fiber2
      fiber.transfer
      flunk
    end

    fiber3 = Fiber.new do
      states << :fiber3
      fiber2.transfer
      ruby_version_is '3.0' do
        states << :fiber3_terminated
      end
      ruby_version_is '' ... '3.0' do
        flunk
      end
    end

    fiber3.resume

    ruby_version_is "" ... "3.0" do
      states.should == [:fiber3, :fiber2, :fiber]
    end

    ruby_version_is "3.0" do
      states.should == [:fiber3, :fiber2, :fiber, :fiber3_terminated]
    end
  end
end
uby_2_6'>ruby_2_6</option>
<option value='ruby_2_7'>ruby_2_7</option>
<option value='ruby_3_0'>ruby_3_0</option>
<option value='ruby_3_1'>ruby_3_1</option>
<option value='ruby_3_2'>ruby_3_2</option>
<option value='ruby_3_3'>ruby_3_3</option>
<option value='ruby_3_4'>ruby_3_4</option>
<option value='ruby_4_0'>ruby_4_0</option>
<option value='v1_0r'>v1_0r</option>
<option value='v1_1dev'>v1_1dev</option>
<option value='v1_1r'>v1_1r</option>
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<div class='path'>path: <a href='/ruby.git/log/?id=cfb9624460a295e4e1723301486d89058c228e07'>root</a>/<a href='/ruby.git/log/test?id=cfb9624460a295e4e1723301486d89058c228e07'>test</a>/<a href='/ruby.git/log/test/-ext-?id=cfb9624460a295e4e1723301486d89058c228e07'>-ext-</a>/<a href='/ruby.git/log/test/-ext-/proc?id=cfb9624460a295e4e1723301486d89058c228e07'>proc</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/ruby.git/log/test/-ext-/proc?id=cfb9624460a295e4e1723301486d89058c228e07&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-03-13 06:29:02 +0000'>2018-03-13</span></td><td><a href='/ruby.git/commit/test/-ext-/proc?id=dd3851d2786412de019350a11e749c56fa5a07cc'>Rename test classes to allow stable test count when running test-all -j</a></td><td>nobu</td></tr>
<tr><td><span title='2015-12-16 05:07:31 +0000'>2015-12-16</span></td><td><a href='/ruby.git/commit/test/-ext-/proc?id=3e92b635fb5422207b7bbdc924e292e51e21f040'>Add frozen_string_literal: false for all files</a></td><td>naruse</td></tr>
<tr><td><span title='2014-11-16 10:38:15 +0000'>2014-11-16</span></td><td><a href='/ruby.git/commit/test/-ext-/proc?id=de870875f773f5a680b12e5306bc316d35465fe5'>vm_eval.c: rb_current_receiver</a></td><td>nobu</td></tr>
<tr><td><span title='2014-11-16 10:11:28 +0000'>2014-11-16</span></td><td><a href='/ruby.git/commit/test/-ext-/proc?id=b1acfbc121ad5eecaf315b6126f960894da1d83b'>ext/-test-/proc/super.c: rename</a></td><td>nobu</td></tr>
<tr><td><span title='2014-11-09 14:58:33 +0000'>2014-11-09</span></td><td><a href='/ruby.git/commit/test/-ext-/proc?id=770128ade36db597395630f861fd9d801428ef2b'>test_bmethod.rb: block in bmethod test</a></td><td>nobu</td></tr>
<tr><td><span title='2014-11-09 14:33:19 +0000'>2014-11-09</span></td><td><a href='/ruby.git/commit/test/-ext-/proc?id=71c8cf27dbf049aa8e91550ae0b04bc1bca6ee3f'>test_bmethod.rb: super in bmethod test</a></td><td>nobu</td></tr>