start with test runner

Cargo.lock

@@ -32,6 +32,7 @@ dependencies = [
  "anyhow",
  "clap",
  "ctrlc",
+ "fs_extra",
  "libc",
  "owo-colors",
  "prettyplease",
@@ -137,6 +138,12 @@ dependencies = [
  "instant",
 ]
 
+[[package]]
+name = "fs_extra"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"
+
 [[package]]
 name = "heck"
 version = "0.4.0"

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
 members = ["./", "./prettyplease-forked"]
-exclude = ["test-cases/*"]
+exclude = ["test-cases/*", "full-tests/*"]
 
 [package]
 name = "cargo-minimize"
@@ -30,3 +30,6 @@ walkdir = "2.3.2"
 
 [target."cfg(unix)".dependencies]
 libc = "0.2.138"
+
+[dev-dependencies]
+fs_extra = "1.3.0"

full-tests/to-empty-main/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "to-empty-main"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

full-tests/to-empty-main/src/main.rs

@@ -0,0 +1,12 @@
+use std::collecions::HashMap;
+
+/// ~REQUIRE-DELETED
+fn user(map: HashMap<(), ()>) {
+    map.insert((), ());
+}
+
+/// ~MINIMIZE-ROOT main
+fn main() {
+    let map = HashMap::new();
+    user(map);
+}

src/main.rs

@@ -36,5 +36,6 @@ fn main() {
 
     if let Err(err) = cargo_minimize::minimize(options, cancel2) {
         error!("An error occured:\n{err}");
+        std::process::exit(1);
     }
 }

tests/full_tests.rs

@@ -0,0 +1,54 @@
+use anyhow::{ensure, Context, Result};
+use std::process::Command;
+use std::{
+    fs,
+    io::{self, Write},
+    path::Path,
+};
+
+#[test]
+fn full_tests() -> Result<()> {
+    let path = Path::new(file!())
+        .canonicalize()?
+        .parent()
+        .unwrap()
+        .parent()
+        .unwrap()
+        .join("full-tests");
+
+    let children = fs::read_dir(path)?;
+
+    for child in children {
+        let child = child?;
+        let path = child.path();
+
+        build(&path)?;
+    }
+
+    Ok(())
+}
+
+fn build(path: &Path) -> Result<()> {
+    let cargo_minimize = Path::new("target/debug/cargo-minimize").canonicalize()?;
+
+    let proj_dir = path.file_name().unwrap().to_str().unwrap();
+    writeln!(io::stdout(), ".... Testing {}", proj_dir)?;
+
+    let tempdir = tempfile::tempdir()?;
+
+    fs_extra::copy_items(&[path], &tempdir, &fs_extra::dir::CopyOptions::new())?;
+
+    let proj_dir = tempdir.path().join(proj_dir).canonicalize()?;
+
+    let mut cmd = Command::new(cargo_minimize);
+    cmd.current_dir(&proj_dir);
+
+    cmd.arg("minimize");
+
+    let out = cmd.output().context("spawning cargo-minimize")?;
+    let stderr = String::from_utf8(out.stderr).unwrap();
+
+    // ensure!(out.status.success(), "Command failed:\n{stderr}",);
+
+    Ok(())
+}