=begin

= RUNIT::TestResult class

== SuperClass
* Object
== Included Modules:
* Observable

== Methods:
: error_size
      Returns how many error raised.

: errors
      Returns array of all errors.
      The each element of array is ((<RUNIT::TestFailure|URL:./testfailure.html>)) object.

: failure_size
      Returns how many failures raised.

: failures
      Returns array of all failures.
      The each element of array is ((<RUNIT::TestFailure|URL:./testfailure.html>)) object.

: run_tests
      Returns how many tests finished to run.

: running_time
      Returns running time of tests.

: succeed?
      Returns true if both failure_size and error_size are 0, 
      otherwise returns false.

=end

