[](https://crates.io/crates/cargo-testdox)
[](https://docs.rs/cargo-testdox)



# cargo-testdox
A Cargo subcommand to print your Rust test names as sentences.
## Installation
```sh
cargo install cargo-testdox
```
## Usage
In any Rust project with tests, run:
```sh
cargo testdox
```
`cargo-testdox` will first invoke `cargo test` to run your tests, with any extra arguments that you give it. It will then show the result for each test (passed, failed, or ignored), with the test name formatted as a sentence. That is, with underscores replaced by spaces.
For example, the following test:
```rust
#[test]
fn it_works() {}
```
will produce this output when run with `cargo-testdox`:
```
✔ it works
```
If the test were failing, it would produce:
```
x it works
```
If the test were ignored, it would produce:
```
? it works
```
Doctests are ignored, since they can't currently be named (pending [RFC #3311](https://github.com/rust-lang/rfcs/pull/3311)).
### Function names with underscores
To avoid underscores in a snake-case function name from being replaced, put `_fn_` after the function name:
```rust
#[test]
fn print_hello_world_fn_prints_hello_world() {}
```
becomes:
```
✔ print_hello_world prints hello world
```
## Why
Because [test names should be sentences](https://bitfieldconsulting.com/posts/test-names).
Compare [`gotestdox`](https://github.com/bitfield/gotestdox), a similar tool for Go tests.