Can death gtests be sped up on Linux?

Asked Aug 23 '23 at 05:40

Active Aug 23 '23 at 05:49

Viewed 46 times

Here is the death test on Linux:

#include <gmock/gmock.h>
#include <cassert>

void foo()
{
    assert(false);
}

TEST(MyTestDeathTest, MyTest)
{
    ASSERT_DEATH(foo(), "");
}

int main(int argc, char** argv)
{
    ::testing::InitGoogleTest(&argc, argv);

    return RUN_ALL_TESTS();
}

Here is the output:

[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from MyTestDeathTest
[ RUN      ] MyTestDeathTest.MyTest

gtest.cpp:****:: Death tests use fork(), which is unsafe particularly in a threaded context. For this test, Google Test couldn't detect the number of threads.

[       OK ] MyTestDeathTest.MyTest (210 ms)
[----------] 1 test from MyTestDeathTest (210 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (210 ms total)
[  PASSED  ] 1 test.

If I comment out assert(false) the test fails with failed to die, but takes only 2 ms.

So I have only two death tests in my suite, but it gives me 0.5 second slowdown. Can it be helped?

edited Aug 23 '23 at 05:49

asked Aug 23 '23 at 05:40

JenyaKh

2,040
17
25

Do you run the release/optimized build? – 273K Aug 23 '23 at 05:51
No it's a debug build -O1. – JenyaKh Aug 23 '23 at 05:52
1

Is half a second to run your unit tests really the end of the world? – Alan Birtles Aug 23 '23 at 06:28
1

¿Perhaps have crash dump generation enabled? And / or additional crash reporting facilities, such as apport on ubuntu. – user7860670 Aug 23 '23 at 06:32
@AlanBirtles, well, what if I want to write more death unit gtests? – JenyaKh Aug 23 '23 at 07:34
@user7860670, thank you for the idea! I will investigate. – JenyaKh Aug 23 '23 at 07:57
1

read this https://stackoverflow.com/questions/2731531/faster-forking-of-large-processes-on-linux If I had this problem I'd probably try to reimplement this gtest death test with function mentioned in the linked post. But probably this is not the solution you are looking for - too troublesome... – PiotrNycz Aug 23 '23 at 15:55

Can death gtests be sped up on Linux?

0 Answers0