Issue #4368 has been updated by Deryl Doucette. We tested this against the following: 1.9.2 patch levels p136, p180, and p188 (revisions 30365, 30909, and 31204). We came up with the same errors as shown by the following: === TEST FILE CONTENTS require 'test/unit' class TestingTest < Test::Unit::TestCase def test_omg assert_block("SEEING THE ACTUAL MESSAGE") { false } end end === TEST OUTPUT pgpmbp:tmp pgpkeys$ ruby brain.rb Loaded suite brain Started F Finished in 0.000365 seconds. 1) Failure: test_omg(TestingTest) [brain.rb:5]: Expected block to return true value. 1 tests, 1 assertions, 1 failures, 0 errors, 0 skips Test run options: --seed 8967 NOTE ---- The first revision to show correctly was revision 29036 (p0). Revision 30365 showed it correctly as well (p136). So to summarize: pgpmbp:tmp pgpkeys$ rvm use 1.9.2-p0 Using /Users/pgpkeys/.rvm/gems/ruby-1.9.2-p0 pgpmbp:tmp pgpkeys$ ruby brain.rb Loaded suite brain Started F Finished in 0.000618 seconds. 1) Failure: test_omg(TestingTest) [brain.rb:5]: SEEING THE ACTUAL MESSAGE. Expected block to return true value. 1 tests, 1 assertions, 1 failures, 0 errors, 0 skips Test run options: --seed 38217 pgpmbp:tmp pgpkeys$ rvm use 1.9.2-p136 Using /Users/pgpkeys/.rvm/gems/ruby-1.9.2-p136 pgpmbp:tmp pgpkeys$ ruby brain.rb Loaded suite brain Started F Finished in 0.000395 seconds. 1) Failure: test_omg(TestingTest) [brain.rb:5]: SEEING THE ACTUAL MESSAGE. Expected block to return true value. 1 tests, 1 assertions, 1 failures, 0 errors, 0 skips Test run options: --seed 58527 pgpmbp:tmp pgpkeys$ rvm use 1.9.2-p180 Using /Users/pgpkeys/.rvm/gems/ruby-1.9.2-p180 pgpmbp:tmp pgpkeys$ ruby brain.rb Loaded suite brain Started F Finished in 0.000374 seconds. 1) Failure: test_omg(TestingTest) [brain.rb:5]: Expected block to return true value. 1 tests, 1 assertions, 1 failures, 0 errors, 0 skips Test run options: --seed 62205 pgpmbp:tmp pgpkeys$ rvm use 1.9.2-p188 pgpmbp:tmp pgpkeys$ ruby brain.rb Loaded suite brain Started F Finished in 0.000616 seconds. 1) Failure: test_omg(TestingTest) [brain.rb:5]: Expected block to return true value. 1 tests, 1 assertions, 1 failures, 0 errors, 0 skips Test run options: --seed 34294 === NOTE TO DEVS So, p0 and p136 act almost correctly, but they display both the specified error message as well as the default error message. p188 or an earlier point release between p136 and p188 introduces an regression which reverts this behaviour to only showing the default error message. It would be more appropriate if it displayed the custom error message only. ---------------------------------------- Bug #4368: MiniTest::Assertions#assert_block ignores the given message. http://redmine.ruby-lang.org/issues/4368 Author: Nobuyoshi Nakada Status: Closed Priority: Normal Assignee: Ryan Davis Category: lib Target version: 1.9.2 ruby -v: r30784 This method ignores the argument. def assert_block msg = nil assert yield, "Expected block to return true value." end -- http://redmine.ruby-lang.org