updates

libmarlin/src/scan_tests.rs

@@ -0,0 +1,26 @@
+// libmarlin/src/scan_tests.rs
+
+use super::scan::scan_directory;
+use super::db;
+use tempfile::tempdir;
+use std::fs::File;
+
+#[test]
+fn scan_directory_counts_files() {
+    let tmp = tempdir().unwrap();
+
+    // create a couple of files
+    File::create(tmp.path().join("a.txt")).unwrap();
+    File::create(tmp.path().join("b.log")).unwrap();
+
+    // open an in-memory DB (runs migrations)
+    let mut conn = db::open(":memory:").unwrap();
+
+    let count = scan_directory(&mut conn, tmp.path()).unwrap();
+    assert_eq!(count, 2);
+
+    // ensure the paths were inserted
+    let mut stmt = conn.prepare("SELECT COUNT(*) FROM files").unwrap();
+    let total: i64 = stmt.query_row([], |r| r.get(0)).unwrap();
+    assert_eq!(total, 2);
+}