1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150

//! **Assert [`Command`]** - Easy command initialization and assertions.
//!
//! `assert_cmd` aims to simplify the process for doing integration testing of CLIs, including:
//! - Finding your crate's binary to test
//! - Assert on the result of your program's run.
//!
//! ## Overview
//!
//! Create a [`Command`]:
//! - `Command::new(path)`
//! - `Command::from_std(...)`
//! - `Command::cargo_bin(name)`
//!
//! Configure a [`Command`]:
//! - `arg` / `args`
//! - `current_dir`
//! - `env` / `envs` / `env_remove` / `env_clear`
//! - `write_stdin` / `pipe_stdin`
//! - `timeout`
//!
//! Validate a [`Command`]:
//! - `ok` / `unwrap` / `unwrap_err`
//! - `assert`
//!   - `success`, see [`Assert`]
//!   - `failure`, see [`Assert`]
//!   - `interrupted`, see [`Assert`]
//!   - `code`, see [`Assert`]
//!   - `stdout`, see [`Assert`]
//!   - `stderr`, see [`Assert`]
//!   - `get_output` for everything else, see [`Assert`]
//!
//! Note: [`Command`] is provided as a convenience. Extension traits for [`std::process::Command`]
//! and `Output` are provided for interoperability:
//! - [`CommandCargoExt`]
//! - [`OutputOkExt`]
//! - [`OutputAssertExt`]
//!
//! ## Examples
//!
//! Here's a trivial example:
//! ```rust,no_run
//! use assert_cmd::Command;
//!
//! let mut cmd = Command::cargo_bin("bin_fixture").unwrap();
//! cmd.assert().success();
//! ```
//!
//! And a little of everything:
//! ```rust,no_run
//! use assert_cmd::Command;
//!
//! let mut cmd = Command::cargo_bin("bin_fixture").unwrap();
//! let assert = cmd
//!     .arg("-A")
//!     .env("stdout", "hello")
//!     .env("exit", "42")
//!     .write_stdin("42")
//!     .assert();
//! assert
//!     .failure()
//!     .code(42)
//!     .stdout("hello\n");
//! ```
//!
//! ## Relevant crates
//!
//! Other crates that might be useful in testing command line programs.
//! * [escargot] for more control over configuring the crate's binary.
//! * [duct] for orchestrating multiple processes.
//!   * or [commandspec] for easier writing of commands
//! * [rexpect][rexpect] for testing interactive programs.
//! * [assert_fs] for filesystem fixtures and assertions.
//!   * or [tempfile] for scratchpad directories.
//! * [dir-diff] for testing file side-effects.
//!
//! ## Migrating from `assert_cli` v0.6
//!
//! `assert_cmd` is the successor to [the original `assert_cli`][assert_cli]:
//! - More flexible, reusable assertions (also used by [assert_fs]).
//! - Can integrate with other process-management crates, like `duct`.
//! - Addresses several architectural problems.
//!
//! Key points in migrating from `assert_cli`:
//! - The command-under-test is run eagerly, with assertions happening immediately.
//! - [`success()`] is not implicit and requires being explicitly called.
//! - `stdout`/`stderr` aren't automatically trimmed before being passed to the `Predicate`.
//!
//! [commandspec]: https://crates.io/crates/commandspec
//! [assert_cli]: https://crates.io/crates/assert_cli/0.6.3
//! [dir-diff]: https://crates.io/crates/dir-diff
//! [tempfile]: https://crates.io/crates/tempfile
//! [escargot]: https://crates.io/crates/escargot
//! [duct]: https://crates.io/crates/duct
//! [assert_fs]: https://crates.io/crates/assert_fs
//! [rexpect]: https://crates.io/crates/rexpect
//! [`Command`]: cmd::Command
//! [`Assert`]: assert::Assert
//! [`success()`]: assert::Assert::success()
//! [`CommandCargoExt`]: cargo::CommandCargoExt
//! [`OutputOkExt`]: output::OutputOkExt
//! [`OutputAssertExt`]: assert::OutputAssertExt

#![cfg_attr(docsrs, feature(doc_auto_cfg))]
#![warn(clippy::print_stderr)]
#![warn(clippy::print_stdout)]

/// Allows you to pull the name from your Cargo.toml at compile time.
///
/// # Examples
///
/// ```should_panic
/// use assert_cmd::Command;
///
/// let mut cmd = Command::cargo_bin(assert_cmd::crate_name!()).unwrap();
/// let assert = cmd
///     .arg("-A")
///     .env("stdout", "hello")
///     .env("exit", "42")
///     .write_stdin("42")
///     .assert();
/// assert
///     .failure()
///     .code(42)
///     .stdout("hello\n");
/// ```
#[macro_export]
macro_rules! crate_name {
    () => {
        env!("CARGO_PKG_NAME")
    };
}

pub mod assert;
pub mod cargo;
pub mod cmd;
pub mod output;

/// Extension traits that are useful to have available.
pub mod prelude {
    pub use crate::assert::OutputAssertExt;
    pub use crate::cargo::CommandCargoExt;
    pub use crate::output::OutputOkExt;
}

pub use crate::cmd::Command;

mod color;
use color::Palette;

doc_comment::doctest!("../README.md");