From 78d8fefdcf97e12f25d9c726f0687eca0e7c4059 Mon Sep 17 00:00:00 2001
From: Markus Unterwaditzer <markus-tarpit+git@unterwaditzer.net>
Date: Sun, 25 Jun 2023 17:26:24 +0200
Subject: [PATCH] add basic testsuite

---
 Cargo.lock                  | 287 +++++++++++++++++++++++++++++++++---
 Cargo.toml                  |   5 +-
 tests/acceptance.rs         |  26 ++++
 tests/acceptance_helpers.rs |  54 +++++++
 4 files changed, 350 insertions(+), 22 deletions(-)
 create mode 100644 tests/acceptance.rs
 create mode 100644 tests/acceptance_helpers.rs

diff --git a/Cargo.lock b/Cargo.lock
index f4ea128..2aa7fc9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -151,7 +151,7 @@ dependencies = [
  "encode_unicode",
  "lazy_static",
  "libc",
- "windows-sys",
+ "windows-sys 0.42.0",
 ]
 
 [[package]]
@@ -247,6 +247,36 @@ version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
 
+[[package]]
+name = "errno"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4bcfec3a70f97c962c307b2d2c56e358cf1d00b558d74262b5f929ee8cc7e73a"
+dependencies = [
+ "errno-dragonfly",
+ "libc",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
+name = "errno-dragonfly"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
+dependencies = [
+ "cc",
+ "libc",
+]
+
+[[package]]
+name = "fastrand"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e51093e27b0797c359783294ca4f0a911c270184cb10f85783b118614a1501be"
+dependencies = [
+ "instant",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -303,6 +333,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
+
 [[package]]
 name = "ignore"
 version = "0.4.16"
@@ -323,17 +359,49 @@ dependencies = [
 
 [[package]]
 name = "insta"
-version = "1.29.0"
+version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a28d25139df397cbca21408bb742cf6837e04cdbebf1b07b760caf971d6a972"
+checksum = "49de01ff8a0781c5414e674b4469b81f6693d6bda6a4d405600c2acd06ebc6d3"
 dependencies = [
  "console 0.15.5",
- "lazy_static",
  "linked-hash-map",
+ "once_cell",
+ "serde",
  "similar",
  "yaml-rust",
 ]
 
+[[package]]
+name = "insta-cmd"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76cb631fa6f0f228ef5c5d05cc66b3c2455c398536b97621a0f0316621bbae47"
+dependencies = [
+ "insta",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
+[[package]]
+name = "io-lifetimes"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
+dependencies = [
+ "hermit-abi 0.3.1",
+ "libc",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "itertools"
 version = "0.10.0"
@@ -343,6 +411,12 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "453ad9f582a441959e5f0d088b02ce04cfe8d51a8eaf077f12ac6d3e94164ca6"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -351,9 +425,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.80"
+version = "0.2.146"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614"
+checksum = "f92be4933c13fd498862a9e02a3055f8a8d9c039ce33db97306fd5a6caa7f29b"
 
 [[package]]
 name = "linked-hash-map"
@@ -361,6 +435,12 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
+
 [[package]]
 name = "log"
 version = "0.4.11"
@@ -395,6 +475,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -404,7 +490,7 @@ dependencies = [
  "proc-macro-error-attr",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.48",
  "version_check",
 ]
 
@@ -421,18 +507,18 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.24"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
+checksum = "7b368fba921b0dce7e60f5e04ec15e565b3303972b42bcfde1d0713b881959eb"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.7"
+version = "1.0.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
+checksum = "1b9ab9c7eadfd8df19006f1cf1a4aed13540ed5cbc047010ece5826e10825488"
 dependencies = [
  "proc-macro2",
 ]
@@ -459,6 +545,15 @@ dependencies = [
  "num_cpus",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "regex"
 version = "1.4.2"
@@ -477,6 +572,26 @@ version = "0.6.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b181ba2dcf07aaccad5448e8ead58db5b742cf85dfe035e2227f137a539a189"
 
+[[package]]
+name = "rustix"
+version = "0.37.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f79bef90eb6d984c72722595b5b1348ab39275a5e5123faca6863bf07d75a4e0"
+dependencies = [
+ "bitflags",
+ "errno",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f91339c0467de62360649f8d3e185ca8de4224ff281f66000de5eb2a77a79041"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -492,6 +607,37 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
+[[package]]
+name = "serde"
+version = "1.0.164"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e8c8cf938e98f769bc164923b06dce91cea1751522f46f8466461af04c9027d"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.164"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9735b638ccc51c28bf6914d90a2e9725b377144fc612c49a611fddd1b631d68"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.22",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46266871c240a00b8f503b877622fe33430b3c7d963bdc0f2adc511e54a1eae3"
+dependencies = [
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "similar"
 version = "2.2.1"
@@ -507,12 +653,14 @@ dependencies = [
  "console 0.13.0",
  "ignore",
  "insta",
+ "insta-cmd",
  "itertools",
  "num_cpus",
  "rayon",
  "regex",
  "similar",
  "structopt",
+ "tempfile",
  "thiserror",
 ]
 
@@ -543,7 +691,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.48",
 ]
 
 [[package]]
@@ -563,6 +711,31 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2efbeae7acf4eabd6bcdcbd11c92f45231ddda7539edc7806bd1a04a03b24616"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "tempfile"
+version = "3.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31c0432476357e58790aaa47a8efb0c5138f137343f3b5f23bd36a27e3b0a6d6"
+dependencies = [
+ "autocfg",
+ "cfg-if 1.0.0",
+ "fastrand",
+ "redox_syscall",
+ "rustix",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "terminal_size"
 version = "0.1.15"
@@ -599,7 +772,7 @@ checksum = "9ba20f23e85b10754cd195504aebf6a27e2e6cbe28c17778a0c930724628dd56"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.48",
 ]
 
 [[package]]
@@ -617,6 +790,12 @@ version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15811caf2415fb889178633e7724bad2509101cde276048e013b9def5e51fa0"
+
 [[package]]
 name = "unicode-segmentation"
 version = "1.7.0"
@@ -695,13 +874,37 @@ version = "0.42.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_aarch64_gnullvm 0.42.2",
+ "windows_aarch64_msvc 0.42.2",
+ "windows_i686_gnu 0.42.2",
+ "windows_i686_msvc 0.42.2",
+ "windows_x86_64_gnu 0.42.2",
+ "windows_x86_64_gnullvm 0.42.2",
+ "windows_x86_64_msvc 0.42.2",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b1eb6f0cd7c80c79759c929114ef071b87354ce476d9d94271031c0497adfd5"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.0",
+ "windows_aarch64_msvc 0.48.0",
+ "windows_i686_gnu 0.48.0",
+ "windows_i686_msvc 0.48.0",
+ "windows_x86_64_gnu 0.48.0",
+ "windows_x86_64_gnullvm 0.48.0",
+ "windows_x86_64_msvc 0.48.0",
 ]
 
 [[package]]
@@ -710,42 +913,84 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
+
 [[package]]
 name = "yaml-rust"
 version = "0.4.5"
diff --git a/Cargo.toml b/Cargo.toml
index 9c9064e..75abfe1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,4 +22,7 @@ rayon = "1.7.0"
 similar = { version = "2.2.1", features = ["text"] }
 
 [dev-dependencies]
-insta = "1.2.0"
+# https://github.com/mitsuhiko/insta-cmd/issues/7
+insta = "=1.18.0"
+insta-cmd = "0.2.0"
+tempfile = "3.6.0"
diff --git a/tests/acceptance.rs b/tests/acceptance.rs
new file mode 100644
index 0000000..e78e978
--- /dev/null
+++ b/tests/acceptance.rs
@@ -0,0 +1,26 @@
+use std::fs::{read_to_string, write};
+
+use anyhow::Error;
+
+mod acceptance_helpers;
+use acceptance_helpers::{assert_cmd, setup};
+use insta::assert_snapshot;
+
+#[test]
+fn test_basic() -> Result<(), Error> {
+    let harness = setup()?;
+
+    write(harness.join("content"), "hello world")?;
+
+    assert_cmd!(harness, spacemod "--accept-all" "world" "lard", @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    Automatically changed ./content
+
+    ----- stderr -----
+    "###);
+
+    assert_snapshot!(read_to_string(harness.join("content"))?, @"hello lard");
+    Ok(())
+}
diff --git a/tests/acceptance_helpers.rs b/tests/acceptance_helpers.rs
new file mode 100644
index 0000000..47a85b6
--- /dev/null
+++ b/tests/acceptance_helpers.rs
@@ -0,0 +1,54 @@
+use std::{
+    env::current_dir,
+    path::{Path, PathBuf},
+};
+
+use anyhow::Error;
+use tempfile::TempDir;
+
+pub struct Harness {
+    pub project_root: Option<TempDir>,
+    pub cwd: PathBuf,
+    pub binary: PathBuf,
+}
+
+impl Drop for Harness {
+    fn drop(&mut self) {
+        if std::env::var("SPACEMOD_TEST_LEAK_FILES").unwrap_or_default() == "1" {
+            std::mem::forget(self.project_root.take());
+        }
+    }
+}
+
+impl Harness {
+    pub fn join(&self, path: impl AsRef<Path>) -> PathBuf {
+        self.cwd.join(path)
+    }
+}
+
+pub fn setup() -> Result<Harness, Error> {
+    let binary = current_dir()?.join("target/debug/spacemod").to_owned();
+    let tempdir = tempfile::tempdir()?;
+    Ok(Harness {
+        cwd: tempdir.path().to_owned(),
+        project_root: Some(tempdir),
+        binary,
+    })
+}
+
+#[allow(unused_macros)]
+macro_rules! assert_cmd {
+    ($harness:expr, spacemod $($arg:literal)*, $($insta_args:tt)*) => {{
+        use std::process::Command;
+
+        insta_cmd::assert_cmd_snapshot!(
+            Command::new(&$harness.binary)
+            .current_dir(&$harness.cwd)
+            $(.arg($arg))*,
+            $($insta_args)*
+        );
+    }}
+}
+
+#[allow(unused_imports)]
+pub(crate) use assert_cmd;