How to link the Rust box with integration tests in the tests folder when creating a static library?

Question

I am building a library in Rust that is called from C / C ++ code. Cargo.toml configured to display the box as a static library:

 [lib] crate-type = ["staticlib"] 

I have a test in tests/integration_test.rs :

 extern crate mylibrary; #[test] fn it_works() { hello_world(); // Defined in 'mylibrary'. } 

However, when running tests with cargo test following error is displayed:

 error[E0463]: can't find crate for `mylibrary` --> tests\integration_test.rs:1:1 | 1 | extern crate mylibrary; | ^^^^^^^^^^^^^^^^^^^^^ can't find crate 

If I remove the staticlib configuration line from Cargo.toml , then the tests build and work fine.

Two possibilities come to me:

• Do I need to configure the construction of the box when performing tests in different ways (i.e. so that it does not create a static library)?

• Do I need to link the static library box differently in the test (i.e. as if it were a C system library)?

It’s not clear from the docs what the correct way to configure this setting, or how to do it.