Crate assert_fs

Filesystem fixtures and assertions for testing.

Fixtures:

• A sandbox to work within (see TempDir).
• Setup the sandbox (see FileTouch, FileWriteBin, FileWriteStr, PathCopy).

For assertions, see PathAssert.

[dependencies]
assert_fs = "0.11"

Overview

Setting up a fixture

• TempDir
• touch a ChildPath
• write_binary a ChildPath
• write_str a ChildPath
• copy_from a pristine folder to a ChildPath or TempDir

Validating

• assert a ChildPath or TempDir

Example

Here is a trivial example:

extern crate assert_fs;
extern crate predicates;

use assert_fs::prelude::*;
use predicates::prelude::*;

let temp = assert_fs::TempDir::new().unwrap();
let input_file = temp.child("foo.txt");
input_file.touch().unwrap();

// ... do something with input_file ...

input_file.assert("");
temp.child("bar.txt").assert(predicate::path::missing());

temp.close().unwrap();

Relevant crates

Other crates that might be useful in testing command line programs.

Modules

assert	Filesystem assertions.
fixture	Initialize the filesystem to use as test fixtures.
prelude	Extension traits that are useful to have available.

Structs

TempDir

A directory in the filesystem that is automatically deleted when it goes out of scope.