[−][src]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 or NamedTempFile
• touch a ChildPath or NamedTempFile
• write_binary a ChildPath or NamedTempFile
• write_str a ChildPath or NamedTempFile
• write_file a ChildPath or NamedTempFile
• copy_from a pristine folder to a ChildPath or TempDir

Validating

• assert a ChildPath, TempDir, or NamedTempFile

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.