summaryrefslogtreecommitdiff
path: root/test/ruby/test_continuation.rb
blob: a06ac98c8c942d5c14d15642053928d53cec16a4 (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
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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
# frozen_string_literal: false
require 'test/unit'
EnvUtil.suppress_warning {require 'continuation'}
require 'fiber'

class TestContinuation < Test::Unit::TestCase
  def test_create
    assert_equal(:ok, callcc{:ok})
    assert_equal(:ok, callcc{|c| c.call :ok})
  end

  def test_call
    assert_equal(:ok, callcc{|c| c.call :ok})

    ary = []
    ary << callcc{|c|
      @cont = c
      :a
    }
    @cont.call :b if ary.length < 3
    assert_equal([:a, :b, :b], ary)
  end

  def test_check_localvars
    vv = 0
    @v = 0
    @ary = []
    [1, 2, 3].each{|i|
      callcc {|k| @k = k}
      @v += 1
      vv += 1
    }
    @ary << [vv, @v]
    @k.call if @v < 10
    assert_equal((3..10).map{|e| [e, e]}, @ary)
  end

  def test_error
    cont = callcc{|c| c}
    Thread.new{
      assert_raise(RuntimeError){
        cont.call
      }
    }.join
    assert_raise(LocalJumpError){
      callcc
    }
    assert_raise(RuntimeError){
      c = nil
      Fiber.new do
        callcc {|c2| c = c2 }
      end.resume
      c.call
    }
  end

  def test_ary_flatten
    assert_normal_exit %q{
      require 'continuation'
      n = 0
      o = Object.new
      def o.to_ary() callcc {|k| $k = k; [1,2,3]} end
      [10,20,o,30,o,40].flatten.inspect
      n += 1
      $k.call if n < 100
    }, '[ruby-dev:34798]'
  end

  def test_marshal_dump
    assert_normal_exit %q{
      require 'continuation'
      n = 0
      o = Object.new
      def o.marshal_dump() callcc {|k| $k = k };  "fofof" end
      a = [1,2,3,o,4,5,6]
      Marshal.dump(a).inspect
      n += 1
      $k.call if n < 100
    }, '[ruby-dev:34802]'
  end

  def tracing_with_set_trace_func
    orig_thread = Thread.current
    cont = nil
    func = lambda do |*args|
      if orig_thread == Thread.current
        if cont
          @memo += 1
          c = cont
          cont = nil
          c.call(nil)
        end
      end
    end
    cont = callcc { |cc| cc }
    if cont
      set_trace_func(func)
    else
      set_trace_func(nil)
    end
  end

  def test_tracing_with_set_trace_func
    @memo = 0
    tracing_with_set_trace_func
    tracing_with_set_trace_func
    tracing_with_set_trace_func
    assert_equal 3, @memo
  end

  def tracing_with_thread_set_trace_func
    cont = nil
    func = lambda do |*args|
      if cont
        @memo += 1
        c = cont
        cont = nil
        c.call(nil)
      end
    end
    cont = callcc { |cc| cc }
    if cont
      Thread.current.set_trace_func(func)
    else
      Thread.current.set_trace_func(nil)
    end
  end

  def test_tracing_with_thread_set_trace_func
    @memo = 0
    tracing_with_thread_set_trace_func
    tracing_with_thread_set_trace_func
    tracing_with_thread_set_trace_func
    assert_equal 3, @memo
  end
end