When creating a project with a test like so:
cargo init --bin projectname
mkdir projectname/tests
echo "extern crate projectname;" > projectname/tests/test.rs
cd projectname/
cargo build
I get this error when testing:
cargo test
Compiling projectname v0.1.0 (file:///home/username/Lab/projectname)
error[E0463]: can't find crate for `projectname`
--> tests/test.rs:1:1
|
1 | extern crate projectname;
| ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
How can I access the functions in ´projectname/src/main.rs´ from projectname/tests/test.rs
?
How can I access functions in ´projectname/src/main.rs´ from projectname/tests/test.rs?
You cannot.
A binary cannot be used a an external crate (the same way as you can't use a ELF binary as a shared object/library)
You just have to change your initialisation to
cargo init --lib projectname
or rename your main.rs
to lib.rs
If you really want to stick with a main, you may look at Rust package with both a library and a binary? .
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