Use different databases for tests

This prevents an issue where the extra_infos test would have a lock on the database, preventing the positive and negative reports tests from using it.

src/tests.rs

@@ -155,7 +155,7 @@ async fn test_extra_infos() {
         array_bytes::hex2array("72E12B89136B45BBC81D1EF0AC7DDDBB91B148DB").unwrap();
 
     // Open test database
-    let db: Db = sled::open("test_db").unwrap();
+    let db: Db = sled::open("test_db_ei").unwrap();
 
     // Delete all data in test DB
     db.clear().unwrap();
@@ -337,7 +337,7 @@ fn test_negative_reports() {
     // (Also test encryption and decryption.)
 
     // Open test database
-    let db: Db = sled::open("test_db").unwrap();
+    let db: Db = sled::open("test_db_nr").unwrap();
 
     // Delete all data in test DB
     db.clear().unwrap();
@@ -785,7 +785,7 @@ fn test_positive_reports() {
     .unwrap();
 
     // Open test database
-    let db: Db = sled::open("test_db").unwrap();
+    let db: Db = sled::open("test_db_pr").unwrap();
 
     // Delete all data in test DB
     db.clear().unwrap();