testException.rb

require 'test/minirunit'
#test backtrace
if !(defined? $recurse)
  test_check "Test Exception:"
  $recurse = false
end

begin
  if $recurse
    raise Exception, 'test'
  else
    $recurse=true
    load('test/testException.rb')
  end
rescue Exception => boom
  result =  boom.backtrace.collect {|trace|
    trace =~ /:(\d+):?/ && $1.to_i
  }
  test_equal([10,13,13] , result.slice(0..2))
end

test_no_exception {
  begin
    raise "X"
  rescue NoMethodError,RuntimeError =>e
  end
}

test_no_exception {
  begin
    begin
      raise "X"
    rescue NoMethodError
      test_ok(false)
    end
  rescue
    test_ok(true)
  end
}

begin
  e = StandardError.new
  e.set_backtrace("abc")
rescue TypeError => e
  test_ok(true)
end

begin
  e = StandardError.new
  e.set_backtrace(123)
rescue TypeError => e
  test_ok(true)
end

begin
  e = StandardError.new
  e.set_backtrace(["abc", 123])
rescue TypeError => e
  test_ok(true)
end

test_no_exception {
  e = StandardError.new
  e.set_backtrace(["abc", "123"])
}

test_no_exception {
  e = StandardError.new
  e.set_backtrace(nil)
}

begin
  raise 'Something bad'
rescue
  begin
    test_ok(true)
  rescue
    test_ok(false)
  end
  test_ok($!, 'Global exception ($!) should not be nil')
  test_ok($!.to_s.eql?('Something bad'), "Global exceptions should be 'Something bad', but is '#{$!}'")
end

begin
  raise 'Something bad'
rescue
  begin
    raise 'Something else bad'
  rescue
    test_ok(true)
  end
  test_ok($!, 'Global exception ($!) should not be nil')
  test_ok($!.to_s.eql?('Something bad'), "Global exceptions should be 'Something bad', but is '#{$!}'")
end

class TypeError
  def new(*args)
    StandardError.new
  end
end

test_exception(StandardError) { 5 + "A" }