Testing

Different Options

When you run cargo run , this command compiles the code to binary and then runs the binary. In the same way, cargo test first compiles to binary code and then runs the test cases

Use cargo test -- --test-threads=1 to run the test in single thread. The -- in between cargo test and --test-threads=1 is used to run the commands separately for two things.

1. One for compiling the code to binary and running the binary code

2. Two for running the binary with specified option

Use cargo test -- show-output for seeing the println! output on the console

Use cargo test -- --ignored to run ignored test cases

Integration Testing

To to integration test in rust, create a new directory tests in the same level as src directory. Then add the test case files inside tests directory.

Each test file inside tests directory creates a crate.

CAVEAT !! IMPORTANT

You can't run integration test cases for functions in src/main.rs. So it is advisable to use src/lib.rs so that we could run integration test cases