The Rust package comes automatically setup with a unit test in the src/lib.rs file. You can build and test your package in one command.
ArchConfWorkshopUser:~/environment/rust-tdg (master) $ cargo test
Compiling rust-tdg v0.1.0 (/home/ec2-user/environment/rust-tdg)
Finished test [unoptimized + debuginfo] target(s) in 2.31s
Running target/debug/deps/rust_tdg-ca5c114553213fc8
running 1 test
test tests::it_works ... ok
test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Doc-tests rust-tdg
running 0 tests
test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
By default, the manifest file (Cargo.toml) has only the [package] section which contains the meta data about the package. The [dependencies] section is empty. Since we created this package as a library, the [lib] section is "assumed" and the src/lib.rs file is the default location and file name of the library module.
We will overwrite the defaults by adding the following lines to the Cargo.tomlfile after the [package] section.
[lib]
name = "myapp"
path = "src/lib.rs"try to rerun the build and test and notice that the library name changed from rust-tdg to myapp.
ArchConfWorkshopUser:~/environment/rust-tdg (master) $ cargo test
Compiling rust-tdg v0.1.0 (/home/ec2-user/environment/rust-tdg)
Finished test [unoptimized + debuginfo] target(s) in 0.29s
Running target/debug/deps/myapp-3a0fcee6b881b370
running 1 test
test tests::it_works ... ok
test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Doc-tests myapp
running 0 tests
test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out