Add NO_COLOR support and CLI testing.

Cargo.lock

@@ -35,6 +35,20 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "assert_cmd"
+version = "2.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5c2ca00549910ec251e3bd15f87aeeb206c9456b9a77b43ff6c97c54042a472"
+dependencies = [
+ "bstr",
+ "doc-comment",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -88,7 +102,9 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba3569f383e8f1598449f1a423e72e99569137b47740b1da11ef19af3d5c3223"
 dependencies = [
+ "lazy_static",
  "memchr",
+ "regex-automata",
 ]
 
 [[package]]
@@ -314,6 +330,12 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "850878694b7933ca4c9569d30a34b55031b9b139ee1fc7b94a527c4ef960d690"
 
+[[package]]
+name = "difflib"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6184e33543162437515c2e2b48714794e37845ec9851711914eec9d308f6ebe8"
+
 [[package]]
 name = "digest"
 version = "0.10.5"
@@ -324,6 +346,18 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "doc-comment"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
+
+[[package]]
+name = "either"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
+
 [[package]]
 name = "encode_unicode"
 version = "0.3.6"
@@ -416,12 +450,16 @@ dependencies = [
 name = "hooked-cli"
 version = "0.1.0"
 dependencies = [
+ "assert_cmd",
  "clap",
  "color-eyre",
  "hooked-library",
+ "insta",
  "owo-colors",
  "subprocess",
+ "supports-color",
  "tera",
+ "test-case",
 ]
 
 [[package]]
@@ -502,6 +540,21 @@ dependencies = [
  "yaml-rust",
 ]
 
+[[package]]
+name = "is_ci"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "616cde7c720bb2bb5824a224687d8f77bfd38922027f01d825cd7453be5099fb"
+
+[[package]]
+name = "itertools"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.4"
@@ -724,6 +777,33 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
+[[package]]
+name = "predicates"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5aab5be6e4732b473071984b3164dbbfb7a3674d30ea5ff44410b6bcd960c3c"
+dependencies = [
+ "difflib",
+ "itertools",
+ "predicates-core",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da1c2388b1513e1b605fcec39a95e0a9e8ef088f71443ef37099fa9ae6673fcb"
+
+[[package]]
+name = "predicates-tree"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d86de6de25020a36c6d3643a86d9a6a9f552107c0559c60ea03551b5e16c032"
+dependencies = [
+ "predicates-core",
+ "termtree",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -807,6 +887,12 @@ dependencies = [
  "regex-syntax",
 ]
 
+[[package]]
+name = "regex-automata"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+
 [[package]]
 name = "regex-syntax"
 version = "0.6.27"
@@ -928,6 +1014,16 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "supports-color"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4872ced36b91d47bae8a214a683fe54e7078875b399dfa251df346c9b547d1f9"
+dependencies = [
+ "atty",
+ "is_ci",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.103"
@@ -980,6 +1076,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "termtree"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "507e9898683b6c43a9aa55b64259b721b52ba226e0f3779137e50ad114a4c90b"
+
 [[package]]
 name = "test-case"
 version = "2.2.2"
@@ -1177,6 +1279,15 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "wait-timeout"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "walkdir"
 version = "2.3.2"

hooked-cli/Cargo.toml

@@ -15,6 +15,7 @@ path = "source/main.rs"
 color-eyre = "0.6.2"
 owo-colors = "3.5.0"
 subprocess = "0.2.9"
+supports-color = "1.3.0"
 tera = "1.17.1"
 
 [dependencies.clap]
@@ -24,3 +25,8 @@ version = "4.0.18"
 [dependencies.hooked-library]
 path = "../hooked-library"
 version = "0.1.0"
+
+[dev-dependencies]
+assert_cmd = "2.0.5"
+insta = "1.21.0"
+test-case = "2.2.2"

hooked-cli/source/cli/run.rs

@@ -1,3 +1,5 @@
+//! The `run` subcommand.
+
 use std::{io::Read, process::exit};
 
 use {
@@ -5,12 +7,22 @@ use {
   hooked_library::{Config, ExitAction},
   owo_colors::{OwoColorize, Style},
   subprocess::{Exec, Redirection},
+  supports_color::Stream,
 };
 
+/// The `run` subcommand.
 pub fn hooked_run(config: Config, hook_type: String) -> Result<()> {
-  let success_style = Style::new().bold().green();
+  let (success_style, warn_style, error_style) =
-  let warn_style = Style::new().bold().yellow();
+    if let Some(_support) = supports_color::on(Stream::Stdout) {
-  let error_style = Style::new().bold().red();
+      let shared_style = Style::new().bold();
+      (
+        shared_style.green(),
+        shared_style.yellow(),
+        shared_style.red(),
+      )
+    } else {
+      (Style::new(), Style::new(), Style::new())
+    };
 
   if hook_type == "pre-commit" {
     println!(

hooked-cli/tests/run.rs

@@ -0,0 +1,21 @@
+use {assert_cmd::Command, insta::assert_snapshot, test_case::test_case};
+
+#[test_case("pre-commit", "pre-commit.toml", true; "pre-commit")]
+fn test_hooked_run(hook_type: &str, config: &str, expect_failure: bool) {
+  let config = format!("tests/samples/{}", config);
+
+  let mut command = Command::cargo_bin("hooked").unwrap();
+  command
+    .args(["run", hook_type, "--config", &config])
+    .env("NO_COLOR", "1");
+
+  let assert = if expect_failure {
+    command.assert().failure().code(1)
+  } else {
+    command.assert().success()
+  };
+
+  let stderr = std::str::from_utf8(&assert.get_output().stderr).unwrap();
+  let stdout = std::str::from_utf8(&assert.get_output().stdout).unwrap();
+  assert_snapshot!(hook_type, format!("{}{}", stdout, stderr));
+}

hooked-cli/tests/samples/pre-commit.toml

@@ -0,0 +1,14 @@
+[general]
+directory = "tests/samples"
+
+[[pre_commit]]
+script = "simple-echo.bash"
+
+[[pre_commit]]
+name = "Exit 1 Continue"
+command = "echo 'on_failure=continue' && exit 1"
+on_failure = "continue"
+
+[[pre_commit]]
+name = "Exit 1 Stop"
+command = "echo 'Hey from stdout!' && echo 'Hey from stderr!' 1>&2 && exit 1"

hooked-cli/tests/samples/simple-echo.bash

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+echo "Hey, $USER!"

hooked-cli/tests/snapshots/run__pre-commit.snap

@@ -0,0 +1,14 @@
+---
+source: hooked-cli/tests/run.rs
+expression: "format!(\"{}{}\", stdout, stderr)"
+---
+Hooked: Running 3 pre-commit hooks.
+	✓ Unnamed Hook
+	⚠ Exit 1 Continue
+on_failure=continue
+
+	✗ Exit 1 Stop
+Hey from stdout!
+Hey from stderr!
+
+