c++ - ctest 报告退出状态为 1 的测试成功
问题描述
我有一个带有单元测试的项目,当我运行 ctest(macos 上的 cmake 版本 3.18.2)时,所有测试都报告成功。但是,如果我自己运行其中一项测试,它的退出状态为 1。据我所知,这不应该发生,那么是什么原因造成的,我该如何解决?
这个问题是一个粗心的小错误,但为了其他遇到这个问题的人的利益,我提供了一个答案,其余问题可以跳过。
不幸的是,我无法用较小的最小工作示例重现此行为。我会尽量提供尽可能多的相关信息,如果我遗漏了什么,请告诉我。下面是单元测试的代码:
#include "alignment_reader.h"
#define CATCH_CONFIG_MAIN
#define CATCH_CONFIG_COLOUR_NONE
#include "catch.h"
#include "string_conversions.h"
#include "exceptions.h"
namespace paste_alignments {
namespace test {
namespace {
SCENARIO("Test correctness of AlignmentReader::FromFile.",
"[AlignmentReader][FromFile][correctness]") {
GIVEN("The name of a valid input file.") {
std::string input_file{"test_data/valid_alignment_file.tsv"};
WHEN("Constructed with default number of fields and chunk size.") {
CHECK_NOTHROW(AlignmentReader::FromFile(input_file));
/*AlignmentReader reader{AlignmentReader::FromFile(input_file)};
THEN("Field number and chunk size are at default values.") {
CHECK(reader.NumFields() == 12);
CHECK(reader.ChunkSize() == 128 * 1000 * 1000);
}*/
}
}
}
} // namespace
} // namespace test
} // namespace paste_alignments
当我取消注释注释部分时,退出代码更改为 2 并且 ctest 仍然报告成功。
这是我运行 ctest 时发生的情况(有和没有注释部分):
$ ctest
Test project /Users/Jasper/cpp_projects/PasteAlignments/debug
Start 1: alignment_reader_test
1/1 Test #1: alignment_reader_test ............ Passed 0.16 sec
100% tests passed, 0 tests failed out of 1
Total Test time (real) = 0.17 sec
如果我单独运行测试并检查退出状态(注释掉的东西),这是我得到的:
$ ./test/alignment_reader_test
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
alignment_reader_test is a Catch v2.12.2 host application.
Run with -? for options
-------------------------------------------------------------------------------
Scenario: Test correctness of AlignmentReader::FromFile.
Given: The name of a valid input file.
When: Constructed with default number of fields and chunk size.
-------------------------------------------------------------------------------
/Users/Jasper/cpp_projects/PasteAlignments/test/alignment_reader_test.cc:64
...............................................................................
/Users/Jasper/cpp_projects/PasteAlignments/test/alignment_reader_test.cc:65: FAILED:
CHECK_NOTHROW( AlignmentReader::FromFile(input_file) )
due to unexpected exception with message:
Unable to open file: 'test_data/valid_alignment_file.tsv'.
===============================================================================
test cases: 1 | 1 failed
assertions: 1 | 1 failed
$ echo $?
1
当我包含注释部分时,唯一改变的是两个测试失败并且退出状态是 2 而不是 1。
这里有--verbose
标志:
$ ctest --verbose
UpdateCTestConfiguration from :/Users/Jasper/cpp_projects/PasteAlignments/debug/DartConfiguration.tcl
Parse Config file:/Users/Jasper/cpp_projects/PasteAlignments/debug/DartConfiguration.tcl
UpdateCTestConfiguration from :/Users/Jasper/cpp_projects/PasteAlignments/debug/DartConfiguration.tcl
Parse Config file:/Users/Jasper/cpp_projects/PasteAlignments/debug/DartConfiguration.tcl
Test project /Users/Jasper/cpp_projects/PasteAlignments/debug
Constructing a list of tests
Done constructing a list of tests
Updating test list for fixtures
Added 0 tests to meet fixture requirements
Checking test dependency graph...
Checking test dependency graph end
test 1
Start 1: alignment_reader_test
1: Test command: /Users/Jasper/cpp_projects/PasteAlignments/debug/test/alignment_reader_test
1: Test timeout computed to be: 1500
1: ===============================================================================
1: All tests passed (1 assertion in 1 test case)
1:
1/1 Test #1: alignment_reader_test ............ Passed 0.36 sec
100% tests passed, 0 tests failed out of 1
Total Test time (real) = 0.36 sec
我没有更改 ctest 配置(如此处所建议)。CMakeLists.txt 看起来像这样:
add_executable(alignment_reader_test
"${PROJECT_SOURCE_DIR}/test/alignment_reader_test.cc"
"${PROJECT_SOURCE_DIR}/src/alignment_reader.cc"
"${PROJECT_SOURCE_DIR}/src/alignment_batch.cc"
"${PROJECT_SOURCE_DIR}/src/scoring_system.cc"
"${PROJECT_SOURCE_DIR}/src/alignment.cc"
"${PROJECT_SOURCE_DIR}/src/helpers.cc")
target_include_directories(alignment_reader_test PUBLIC
"${PROJECT_SOURCE_DIR}/test"
"${PROJECT_SOURCE_DIR}/include"
"${PROJECT_SOURCE_DIR}/lib/catch/include")
add_test(NAME alignment_reader_test COMMAND alignment_reader_test)
解决方案
感谢@Tsyvarev,我发现了这个问题。
构建目录结构如下:
build/
|--test/
|--test_executable
|--test_data/
|--test_datafile
当 CMake 运行test_executable
时,它会从目录中运行它test
。
当我单独运行可执行文件时,我从build
目录中运行它。( ./test/test_executable
)。
在单元测试代码中,test_datafile
被称为test_data/test_datafile
. 当测试从build
可执行文件运行时(就像我所做的那样),而不是从build/test
目录运行时,这无法识别。
因此,当 ctest 运行测试时,它实际上应该成功了。
事实上,如果我先cd
进入test
,测试的退出代码应该是 0。
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