Hi, Test test/testunit/collector/test_objectspace.rb in the CVS gives following 2 errors. It seems that test_objectspace.rb depends order of Hash#each. There are several ways to reduce this error and I could not find "the only way" so I reported here without patch. Nathaniel? Regards, // NaHi P.S. It looks very good suites. 1) Failure!!! test_basic_collection(Test::Unit::Collector::TC_ObjectSpace) [./testunit/collector/test_objectspace.rb:40]: <#<Test::Unit::TestSuite:0x40419b5c @tests=[#<#<Class:0x40419ddc>:0x40419954 @test_passed=true, @method_name="test_1">, #<#<Class:0x40419ddc>:0x40419918 @test_passed=true, @method_name="test_2">, #<#<Class:0x40419d78>:0x404198c8 @test_passed=true, @method_name="test_3">], @name="name">> expected but was <#<Test::Unit::TestSuite:0x40419850 @tests=[#<#<Class:0x40419ddc>:0x40418e50 @test_passed=true, @method_name="test_2">, #<#<Class:0x40419ddc>:0x40418e14 @test_passed=true, @method_name="test_1">, #<#<Class:0x40419d78>:0x404182fc @test_passed=true, @method_name="test_3">], @name="name">> 2) Failure!!! test_filtered_collection(Test::Unit::Collector::TC_ObjectSpace) [./testunit/collector/test_objectspace.rb:55]: <#<Test::Unit::TestSuite:0x404150d4 @tests=[#<#<Class:0x40417294>:0x4041500c @test_passed=true, @method_name="test_1">, #<#<Class:0x40417294>:0x40414fbc @test_passed=true, @method_name="test_2">, #<#<Class:0x40417230>:0x40414f80 @test_passed=true, @method_name="test_3">], @name="collected from the ObjectSpace">> expected but was <#<Test::Unit::TestSuite:0x40414d78 @tests=[#<#<Class:0x40417294>:0x40413aa4 @test_passed=true, @method_name="test_2">, #<#<Class:0x40417294>:0x4041398c @test_passed=true, @method_name="test_1">, #<#<Class:0x40417230>:0x40412ff0 @test_passed=true, @method_name="test_3">], @name="collected from the ObjectSpace">>