[Boost-bugs] [Boost C++ Libraries] #4785: test_output fails on systems that don't zero-fill the exponent to three digits

Subject: [Boost-bugs] [Boost C++ Libraries] #4785: test_output fails on systems that don't zero-fill the exponent to three digits
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-10-25 10:56:54

#4785: test_output fails on systems that don't zero-fill the exponent to three
digits
----------------------------------------+-----------------------------------
 Reporter:  Jim Bell <jim@…>            |       Owner:  matthiasschabel
     Type:  Bugs                        |      Status:  new            
Milestone:  Boost-1.45.0                |   Component:  units          
  Version:  Boost Development Trunk     |    Severity:  Regression     
 Keywords:                              |  
----------------------------------------+-----------------------------------
 test_output fails to match strings exactly on systems that don't zero-fill
 the exponent in scientific notation to three digits, or
 boost::units::engineering_prefix doesn't set that explicitly as it should.
 So you get
 {{{
 "9.99999e-25 meter" != "9.99999e-025 meter"
 }}}
 even though those two values are clearly the same.

 If controlling this is as difficult as it seems to be (see
 [http://stackoverflow.com/questions/268604/how-to-set-the-width-of-the-

 exponent-field-for-an-ostream here]), you could change the comparison to a
 regex_match with the regex
 {{{
 "9\.99999e-0?25 meter"
 }}}

 ----
 {{{
 Run [2010-10-23 06:57:11 UTC]: fail

 Running 14 test cases...
 ../libs/units/test/test_output.cpp(280): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == "9.99999e-025
 meter" failed [9.99999e-25 meter != 9.99999e-025 meter]
 ../libs/units/test/test_output.cpp(280): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == L"9.99999e-025
 meter" failed
 ../libs/units/test/test_output.cpp(281): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == "1e+028 meter"
 failed [1e+28 meter != 1e+028 meter]
 ../libs/units/test/test_output.cpp(281): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == L"1e+028
 meter" failed
 ../libs/units/test/test_output.cpp(282): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == "1.5e-025
 meter" failed [1.5e-25 meter != 1.5e-025 meter]
 ../libs/units/test/test_output.cpp(282): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == L"1.5e-025
 meter" failed
 ../libs/units/test/test_output.cpp(283): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == "1.5e+028
 meter" failed [1.5e+28 meter != 1.5e+028 meter]
 ../libs/units/test/test_output.cpp(283): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == L"1.5e+028
 meter" failed
 ../libs/units/test/test_output.cpp(285): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == "3.40282e+038
 meter" failed [3.40282e+38 meter != 3.40282e+038 meter]
 ../libs/units/test/test_output.cpp(285): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == L"3.40282e+038
 meter" failed
 ../libs/units/test/test_output.cpp(286): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == "1.17549e-038
 meter" failed [1.17549e-38 meter != 1.17549e-038 meter]
 ../libs/units/test/test_output.cpp(286): error in
 "test_output_autoprefixed_quantity_name": check ss.str() == L"1.17549e-038
 meter" failed
 ../libs/units/test/test_output.cpp(341): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() ==
 "9.99999e-025 m" failed [9.99999e-25 m != 9.99999e-025 m]
 ../libs/units/test/test_output.cpp(341): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() ==
 L"9.99999e-025 m" failed
 ../libs/units/test/test_output.cpp(342): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() == "1e+028 m"
 failed [1e+28 m != 1e+028 m]
 ../libs/units/test/test_output.cpp(342): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() == L"1e+028 m"
 failed
 ../libs/units/test/test_output.cpp(343): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() == "1.5e-025 m"
 failed [1.5e-25 m != 1.5e-025 m]
 ../libs/units/test/test_output.cpp(343): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() == L"1.5e-025
 m" failed
 ../libs/units/test/test_output.cpp(344): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() == "1.5e+028 m"
 failed [1.5e+28 m != 1.5e+028 m]
 ../libs/units/test/test_output.cpp(344): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() == L"1.5e+028
 m" failed
 ../libs/units/test/test_output.cpp(346): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() ==
 "3.40282e+038 m" failed [3.40282e+38 m != 3.40282e+038 m]
 ../libs/units/test/test_output.cpp(346): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() ==
 L"3.40282e+038 m" failed
 ../libs/units/test/test_output.cpp(347): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() ==
 "1.17549e-038 m" failed [1.17549e-38 m != 1.17549e-038 m]
 ../libs/units/test/test_output.cpp(347): error in
 "test_output_autoprefixed_quantity_symbol": check ss.str() ==
 L"1.17549e-038 m" failed

 *** 24 failures detected in test suite "Master Test Suite"
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4785>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.