TracePoint study

gistfile1.rb

require 'minitest'
require "minitest/autorun"
require 'power_p'
require 'ripper'

trace = TracePoint.new(:raise) do |tp|
  if tp.raised_exception.class == Minitest::Assertion
    file, lineno = tp.raised_exception.location.split(':')
    line = open(file).each_line.drop(lineno.to_i - 1).first
    idents = Ripper.sexp(line)
    p "line: #{line}".strip
#    p tp.binding.eval('caller_locations')
#    p tp.binding.eval('local_variables')
  end
end
trace.enable

class TestMeme < Minitest::Test
  def test_that_kitty_can_eat
    assert_equal 3.times.to_a, 0
  end
end