cmake ctest对于更大的ctest_PARALLEL_LEVEL的奇怪行为



我是SO的新手。我有一个简单的单元测试代码,我正在进行以下操作:

  1. 使用mysqrt库计算数的平方根
  2. 使用平方根的输出,将此结果与相同的数字相加并显示结果

当我使用CTEST_PARALLEL_LEVEL = 1运行代码时,我的所有测试用例都通过了。

但是,当我执行CTEST_PARALLEL_LEVEL = 8时,我的测试用例会因为某些输入而失败一段时间,这在每次运行中都是不固定的。

99%的所有结果都通过了,但1%的结果失败了。

错误:

mysqrt.o: file not recognized: File truncated

我已经使用rm*.o显式地删除了对象文件,但在运行几次后仍然会出现这个错误。

我不确定为什么CTEST_PARALLEL_LEVEL = 8会出现此错误

我附上我的CMakeList只是因为一些堆栈溢出专家可以通过检查这3个CMakeLists.txt文件来理解这个问题。

注意:根据堆栈溢出准则,我不会附加sqrtaddition函数的源代码,以避免问题长度过长。

我的文件夹结构:

SAMPLE_TEST
├── CMakeLists.txt
├── MathFunctions
│   ├── CMakeLists.txt
│   ├── MathFunctions.h
│   └── mysqrt.cpp
└── unit_test
├── CMakeLists.txt
└── step2
├── CMakeLists.txt
├── execute.cpp
└── tutorial.cpp

SAMPLE_TEST

CMakeLists.txt

cmake_minimum_required(VERSION 3.1)
project(Tutorial)
ENABLE_TESTING()    
add_subdirectory(MathFunctions)
add_subdirectory(unit_test)

MathFunctions文件夹

CMakeLists.txt

add_library(MathFunctions mysqrt.cpp)
set(REF_FILES mysqrt.cpp)
add_definitions(-Wall -Wextra -pedantic -std=c++11)
add_custom_target(build_reference_library
DEPENDS sqrtlib
COMMENT "Generating sqrtlib")
ADD_LIBRARY(sqrtlib OBJECT ${REF_FILES})

unit_test文件夹

CMakeLists.txt

set(REF_MATHLIB_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../MathFunctions)
macro(GENERATION file input)
set(ip_generator ctest_input_${input})
add_executable(${ip_generator}
${file}
$<TARGET_OBJECTS:sqrtlib>
)
target_compile_options(${ip_generator} PUBLIC
-Wall -Wextra -g -std=c++11 
-DCTEST_INPUT=${input})

target_link_libraries(${ip_generator} PUBLIC
dl pthread
)
target_include_directories(${ip_generator} PUBLIC
${REF_MATHLIB_DIR}
)
set(INPUT_FILE0 ip0_${input}.y)
set(INPUT_FILE0_TXT ip0_${input}.txt)
add_custom_command(
OUTPUT ${INPUT_FILE0}  ${INPUT_FILE0_TXT}
COMMAND ${ip_generator} > ${INPUT_FILE0_TXT}
MAIN_DEPENDENCY ${sqrtlib}
COMMENT "Generating output files of for testcase")

add_custom_target(gen_input_${input}
DEPENDS ${INPUT_FILE0}
COMMENT "Generated output files")
endmacro() 
####################
macro(EXECUTE file input)
get_filename_component(main_base_name ${file} NAME_WE)
set(main_base_name_mangled ${main_base_name}_${input})
set(exe_generator ctest_ref_${input})
add_executable(${exe_generator}
${file}
$<TARGET_OBJECTS:sqrtlib>
)
target_compile_options(${exe_generator} PUBLIC
-Wall -Wextra -g -std=c++11 
-DCTEST_INPUT=${input})

target_link_libraries(${exe_generator} PUBLIC
dl pthread
)
target_include_directories(${exe_generator} PUBLIC
${REF_MATHLIB_DIR}
)
set(INPUT_FILE0 ip0_${input}.y)
set(EXE_FILE0 exeadd_${input}.y)
set(EXE_FILE_TXT exeadd_${input}.txt)
add_custom_command(
OUTPUT ${EXE_FILE0} ${EXE_FILE_TXT}
COMMAND ${exe_generator}  > ${EXE_FILE_TXT}
MAIN_DEPENDENCY ${INPUT_FILE0} ${sqrtlib}
COMMENT "Generating output files of for testcase")

add_custom_target(gen_execute_${input}
DEPENDS ${EXE_FILE0}
COMMENT "Generated output files")
# add test to simulate
add_test(NAME ctest_execute_${input}
COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR}
--target gen_execute_${input})
#add_dependencies(execute_${main_base_name_mangled}   
#gen_input)
endmacro() 
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++#
# add test directories
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++#
set(TEST_DIRECTORIES
step2
)
foreach(dir ${TEST_DIRECTORIES})
add_subdirectory(${dir})
endforeach()

步骤2文件夹

CMakeLists.txt

set(UT_IPGEN_FILES tutorial.cpp)
set(UT_EXECUTE_FILES execute.cpp)
set(input_integer_range 1 4 9 16 25 36 49 64 81 100 121 144 )
foreach(ip_integer ${input_integer_range})
GENERATION(${UT_IPGEN_FILES} ${ip_integer})
EXECUTE(${UT_EXECUTE_FILES} ${ip_integer})
endforeach(ip_integer)

结果:第一次运行:

Start  1: ctest_execute_1
Start  2: ctest_execute_4
Start  3: ctest_execute_9
Start  4: ctest_execute_16
Start  5: ctest_execute_25
Start  6: ctest_execute_36
Start  7: ctest_execute_49
Start  8: ctest_execute_64
1/12 Test  #4: ctest_execute_16 .................***Failed    1.14 sec
2/12 Test  #6: ctest_execute_36 .................   Passed    1.27 sec
3/12 Test  #7: ctest_execute_49 .................   Passed    1.32 sec
4/12 Test  #8: ctest_execute_64 .................   Passed    1.32 sec
Start  9: ctest_execute_81
Start 10: ctest_execute_100
Start 11: ctest_execute_121
Start 12: ctest_execute_144
5/12 Test  #1: ctest_execute_1 ..................   Passed    1.33 sec
6/12 Test  #2: ctest_execute_4 ..................   Passed    1.33 sec
7/12 Test  #3: ctest_execute_9 ..................   Passed    1.33 sec
8/12 Test  #5: ctest_execute_25 .................   Passed    1.33 sec
9/12 Test #10: ctest_execute_100 ................   Passed    0.54 sec
10/12 Test #11: ctest_execute_121 ................   Passed    0.55 sec
11/12 Test  #9: ctest_execute_81 .................   Passed    0.55 sec
12/12 Test #12: ctest_execute_144 ................   Passed    0.55 sec
92% tests passed, 1 tests failed out of 12
Total Test time (real) =   1.88 sec
The following tests FAILED:
4 - ctest_execute_16 (Failed)

第二次运行:

Start  1: ctest_execute_1
Start  2: ctest_execute_4
Start  3: ctest_execute_9
Start  4: ctest_execute_16
Start  5: ctest_execute_25
Start  6: ctest_execute_36
Start  7: ctest_execute_49
Start  8: ctest_execute_64
1/12 Test  #6: ctest_execute_36 .................   Passed    1.31 sec
2/12 Test  #7: ctest_execute_49 .................   Passed    1.36 sec
3/12 Test  #8: ctest_execute_64 .................   Passed    1.36 sec
Start  9: ctest_execute_81
Start 10: ctest_execute_100
Start 11: ctest_execute_121
4/12 Test  #1: ctest_execute_1 ..................   Passed    1.37 sec
5/12 Test  #2: ctest_execute_4 ..................   Passed    1.37 sec
6/12 Test  #3: ctest_execute_9 ..................   Passed    1.36 sec
7/12 Test  #4: ctest_execute_16 .................   Passed    1.36 sec
8/12 Test  #5: ctest_execute_25 .................   Passed    1.37 sec
Start 12: ctest_execute_144
9/12 Test #11: ctest_execute_121 ................   Passed    0.50 sec
10/12 Test #10: ctest_execute_100 ................   Passed    0.51 sec
11/12 Test  #9: ctest_execute_81 .................   Passed    0.51 sec
12/12 Test #12: ctest_execute_144 ................   Passed    0.34 sec
100% tests passed, 0 tests failed out of 12
Total Test time (real) =   2.01 sec

执行的测试

COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target ...

它在项目的构建目录中有效地运行CCD_ 7(或您使用的任何构建工具(。

但是,同一目录中make并发调用永远不能保证正常工作。这就是为什么在并行运行测试(设置了CTEST_PARALLEL_LEVEL变量(时会出现奇怪的错误。

例如,所有这些测试都试图创建相同的对象文件mysqrt.o,而这种创建绝对不是线程安全的。

通过运行

make sqrtlib

之前

ctest

您可以确定在运行测试时已经创建了对象文件,并且测试不会再次尝试创建它。但在并行测试中,您仍然可能遇到其他冲突。


这取决于您实际想要通过测试检查什么,但通常测试会检查某些程序或库的行为,并且它不打算检查该程序的编译(构建(。因此,编译(构建(命令在测试前执行。

通常,遵循(实现(以下测试工作流程是很方便的:

# Configure the project
cmake <source-directory>
# Build the project.
# It builds both program/library intended, and the tests themselves.
make
# run tests
ctest <params>

在这种情况下,测试可以有以下定义:

add_test(NAME ctest_execute_${input} COMMAND ${exe_generator})

(除非您想通过某种自动方式检查测试的输出,否则无需通过重定向到文件中来明确保存此输出。ctest本身会收集测试的输出。因此,如果需要,您可以读取它(。

相关内容

  • 没有找到相关文章

最新更新