How do I run a zig test in gdb? | Zig Programming Language | Page 1

rare stump May 12, 2023, 4:50 PM

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idk if this is possible. Is it?

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I think i'd need zig to write the test executable somewhere, if it does that

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maybe that's what "install()" does

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use

builder.addTestExe(_, _)

and call its

install()

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wait, i can't find my executable

brave ginkgo May 12, 2023, 5:05 PM

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You can run zig test in gdb. I forgot how to pass arguments to executable with gdb, but with lldb it would be lldb zig -- test

rare stump May 12, 2023, 5:08 PM

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@brave ginkgo when i do that, the debugger doesn't know how to analyze the executable, so I can't break on lines in the source code

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I think the debugger doesn't know how to analyze the executable, because "source list" results in no output.

brave ginkgo May 12, 2023, 5:12 PM

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Hmmm, maybe zig test forks the test code as seperate process. You can try to insert @breakpoint() in your test code and see if gdb catches it

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can try enabling follow on fork mode

rare stump May 12, 2023, 5:16 PM

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\I get "error: the following test command crashed" when it reaches the @breakpoint()

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i'll look into the follow on fork mode later

stray crown May 12, 2023, 6:15 PM

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you can do zig test file.zig --test-cmd gdb --test-cmd-bin or zig test file.zig --test-no-exec -femit-bin=file && gdb file

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sometimes I just grab the test exe path from the error message and debug that directly

rare stump May 12, 2023, 6:35 PM

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thanks!

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i'll try that in a bit

tropic juniper May 14, 2023, 10:25 AM

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stray crown you can do `zig test file.zig --test-cmd gdb --test-cmd-bin` or `zig test file.z...

do you know if this behavior is accessible from build.zig?

hazy marsh May 14, 2023, 10:33 AM

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test.test_runner adds the --test-cmd to the command but its giving me a weird error

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ig im doing it wrong, found it in the std and it seems to take a zig file that it executes rather than something like gdb, not sure how exactly its supposed to work

#How do I run a zig test in gdb?