How to debug?

[loveloki]

I want to debug the rust code, how should I do it?

Currently, I am calling it through node test.js after modifying the code and building it.

But, this method is very inefficient and it is not easy to find problems.

[loveloki]

@samizdatco 🙏

[samizdatco]

It depends on the granularity of what you're trying to test, but you might want to try writing rust unit tests within the module you're trying to debug. To run a specific test you can specify the name of the function you defined:

cargo test name_of_my_test_case

And if you want to make sure that any logging you do actually gets displayed in the console, include the --nocapture flag:

cargo test name_of_my_test_case -- --nocapture

For things that can't be simulated entirely on the rust side I typically do as you describe:

• update the rust code (using dbg! and println! to peek at values)
• run the default make rule to do an un-optimized build
• run node my-test-script.js