Crate cli_test_dir

This crate makes it easier to write integration tests for CLI applications. It's based on the "workdir" pattern used by BurntSushi's xsv and ripgrep crates, but packaged in an easy-to-reuse form.

To use this crate, add the following lines to your Cargo.toml file:

[dev-dependencies]
# You can replace "*" with the current version of this crate.
cli_test_dir = "*"

Then add the following at the top of tests/tests.rs:

extern crate cli_test_dir;

Once this is done, you can set up a simple test.

use cli_test_dir::TestDir;

#[test]
fn write_output_file() {
    let testdir = TestDir::new("mybin", "write_output_file");
    let status = testdir.cmd()
        .arg("-o")
        .arg("out.txt")
        .status()
        .expect("could not run mybin");
    assert!(status.success());
    testdir.expect_path("out.txt");
}

Contributing

Your feedback and contributions are welcome! Please see GitHub for details.

Structs

TestDir

This code is inspired by the WorkDir pattern that BurntSushi uses to test CLI tools like ripgrep and xsv.