Contents

# See that setting ISEQS__ and SCRIPT_ISEQS__ saves 
# RubyVM::Instruction_sequenses
require 'test/unit'

class TestIseqAccess < Test::Unit::TestCase
  def setup
    old_verbosity = $VERBOSE
    $VERBOSE = nil
    Kernel.const_set(:ISEQS__, {})
    Kernel.const_set(:SCRIPT_ISEQS__, {})
    $VERBOSE = old_verbosity
  end

  def teardown
    old_verbosity = $VERBOSE
    $VERBOSE = nil
    Kernel.const_set(:ISEQS__, nil)
    Kernel.const_set(:SCRIPT_ISEQS__, nil)
    $VERBOSE = old_verbosity
  end

  def test_basic
    sizes=[]
    [ISEQS__, SCRIPT_ISEQS__].each do |iseq_hash|
      sizes << iseq_hash.size
    end
    # defining five should trigger five instruction sequence additions
    # to ISEQS__ and SCRIPT_ISEQS__
    # 
    eval 'def five; 5 end'
    assert_equal sizes[0], sizes[1]
    [SCRIPT_ISEQS__, ISEQS__].each do |iseq_hash|
      assert_equal true, iseq_hash.size > sizes.pop
      assert_equal Hash, iseq_hash.class
      a = iseq_hash.first
      assert_equal Array, a.class
      assert_equal RubyVM::InstructionSequence, iseq_hash.values[0][0].class
    end
  end

  # Check RubyVM::InstructionSequence#arity
  def test_arity
    eval 'def five; 5 end'
    eval 'def add(a,b); a+b end'
    eval 'def splat(*a); 5 end'
    [['five', 0,], ['add', 2], ['splat', -1]].each do |meth, expect|
      assert_equal(expect, ISEQS__[meth][0].arity)
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
rb-threadframe-0.39	test/ruby/test_iseq.rb
rb-threadframe-0.37	test/ruby/test_iseq.rb