test: refine assertions
test/test_prime.rb (test_eratosthenes_works_fine_after_timeout): use assert_raise to check timeout.
test/test_securerandom.rb: check if results are hexadecimal strings, and refine failure messages.
test/test_tracer.rb (test_tracer_with_option_r_without_gems): use assert_equal to compare.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51023 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test: refine assertions
test/test_prime.rb (test_eratosthenes_works_fine_after_timeout):
use assert_raise to check timeout.
test/test_securerandom.rb: check if results are hexadecimal
strings, and refine failure messages.
test/test_tracer.rb (test_tracer_with_option_r_without_gems):
use assert_equal to compare.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51023 b2dd03c8-39d4-4d8f-98ff-823fe69b080e