update

cli-bin/tests/util.rs

@@ -0,0 +1,23 @@
+//! tests/util.rs
+//! Small helpers shared across integration tests.
+
+use std::path::{Path, PathBuf};
+use tempfile::TempDir;
+use assert_cmd::Command; 
+/// Absolute path to the freshly-built `marlin` binary.
+pub fn bin() -> PathBuf {
+    PathBuf::from(env!("CARGO_BIN_EXE_marlin"))
+}
+
+/// Build a `Command` for `marlin` whose `MARLIN_DB_PATH` is
+/// `<tmp>/index.db`.
+///
+/// Each call yields a brand-new `Command`, so callers can freely add
+/// arguments, change the working directory, etc., without affecting
+/// other invocations.
+pub fn marlin(tmp: &TempDir) -> Command {
+    let db_path: &Path = &tmp.path().join("index.db");
+    let mut cmd = Command::new(bin());
+    cmd.env("MARLIN_DB_PATH", db_path);
+    cmd
+}