Support --script properly... hopefully

tests/always_success.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+exit 0 # we reproduce! aren't we great?!

tests/minimize.rs

@@ -1,5 +1,7 @@
 mod helper;
 
+use std::path::Path;
+
 use anyhow::Result;
 
 use helper::run_test;
@@ -44,3 +46,27 @@ fn unused() -> Result<()> {
         },
     )
 }
+
+#[test]
+#[cfg_attr(windows, ignore)]
+fn custom_script_success() -> Result<()> {
+    let script_path = Path::new(file!())
+        .parent()
+        .unwrap()
+        .join("always_success.sh")
+        .canonicalize()?;
+
+    run_test(
+        r##"
+        fn main() {}
+    "##,
+        r##"
+    fn main() {
+        loop {}
+    }
+    "##,
+        |opts| {
+            opts.script_path = Some(script_path);
+        },
+    )
+}