diff --git a/lib/Db/SQLite3/Driver.php b/lib/Db/SQLite3/Driver.php
index d65ff2e..46b1110 100644
--- a/lib/Db/SQLite3/Driver.php
+++ b/lib/Db/SQLite3/Driver.php
@@ -16,13 +16,13 @@ class Driver extends \JKingWeb\Arsse\Db\AbstractDriver {
 
     protected $db;
 
-    public function __construct() {
+    public function __construct(string $dbFile = null) {
         // check to make sure required extension is loaded
         if (!class_exists("SQLite3")) {
             throw new Exception("extMissing", self::driverName()); // @codeCoverageIgnore
         }
         // if no database file is specified in the configuration, use a suitable default
-        $dbFile = Arsse::$conf->dbSQLite3File ?? \JKingWeb\Arsse\BASE."arsse.db";
+        $dbFile = $dbFile ?? Arsse::$conf->dbSQLite3File ?? \JKingWeb\Arsse\BASE."arsse.db";
         $mode = \SQLITE3_OPEN_READWRITE | \SQLITE3_OPEN_CREATE;
         $timeout = Arsse::$conf->dbSQLite3Timeout * 1000;
         try {
diff --git a/tests/Db/SQLite3/TestDbDriverSQLite3.php b/tests/Db/SQLite3/TestDbDriverSQLite3.php
index 475bc7d..0c80b5b 100644
--- a/tests/Db/SQLite3/TestDbDriverSQLite3.php
+++ b/tests/Db/SQLite3/TestDbDriverSQLite3.php
@@ -20,7 +20,7 @@ class TestDbDriverSQLite3 extends Test\AbstractTest {
         $conf->dbDriver = Db\SQLite3\Driver::class;
         $conf->dbSQLite3Timeout = 0;
         $conf->dbSQLite3File = tempnam(sys_get_temp_dir(), 'ook');
-        $this->drv = new Db\SQLite3\Driver(true);
+        $this->drv = new Db\SQLite3\Driver();
         $this->ch = new \SQLite3(Arsse::$conf->dbSQLite3File);
         $this->ch->enableExceptions(true);
     }
diff --git a/tests/Db/SQLite3/TestDbUpdateSQLite3.php b/tests/Db/SQLite3/TestDbUpdateSQLite3.php
index a71c605..3441263 100644
--- a/tests/Db/SQLite3/TestDbUpdateSQLite3.php
+++ b/tests/Db/SQLite3/TestDbUpdateSQLite3.php
@@ -30,7 +30,7 @@ class TestDbUpdateSQLite3 extends Test\AbstractTest {
         Arsse::$conf = $conf;
         $this->base = $this->vfs->url();
         $this->path = $this->base."/SQLite3/";
-        $this->drv = new Db\SQLite3\Driver(true);
+        $this->drv = new Db\SQLite3\Driver();
     }
 
     public function tearDown() {
diff --git a/tests/lib/Database/DriverSQLite3.php b/tests/lib/Database/DriverSQLite3.php
index a898a08..ca096e4 100644
--- a/tests/lib/Database/DriverSQLite3.php
+++ b/tests/lib/Database/DriverSQLite3.php
@@ -11,7 +11,7 @@ trait DriverSQLite3 {
             $this->markTestSkipped("SQLite extension not loaded");
         }
         Arsse::$conf->dbSQLite3File = ":memory:";
-        $this->drv = new Driver(true);
+        $this->drv = new Driver();
     }
 
     public function nextID(string $table): int {
diff --git a/tests/lib/Database/Setup.php b/tests/lib/Database/Setup.php
index 3dfba36..edd9de4 100644
--- a/tests/lib/Database/Setup.php
+++ b/tests/lib/Database/Setup.php
@@ -48,15 +48,16 @@ trait Setup {
         $this->clearData();
     }
 
-    public function primeDatabase(array $data): bool {
-        $tr = $this->drv->begin();
+    public function primeDatabase(array $data, \JKingWeb\Arsse\Db\Driver $drv = null): bool {
+        $drv = $drv ?? $this->drv;
+        $tr = $drv->begin();
         foreach ($data as $table => $info) {
             $cols = implode(",", array_keys($info['columns']));
             $bindings = array_values($info['columns']);
             $params = implode(",", array_fill(0, sizeof($info['columns']), "?"));
-            $s = $this->drv->prepareArray("INSERT INTO $table($cols) values($params)", $bindings);
+            $s = $drv->prepareArray("INSERT INTO $table($cols) values($params)", $bindings);
             foreach ($info['rows'] as $row) {
-                $this->assertEquals(1, $s->runArray($row)->changes());
+                $s->runArray($row);
             }
         }
         $tr->commit();
@@ -64,6 +65,16 @@ trait Setup {
         return true;
     }
 
+    public function primeFile(string $file, array $data = null): bool {
+        $data = $data ?? $this->data;
+        $primed = $this->primed;
+        $drv = new \JKingWeb\Arsse\Db\SQLite3\Driver($file);
+        $drv->schemaUpdate(\JKingWeb\Arsse\Database::SCHEMA_VERSION);
+        $this->primeDatabase($data, $drv);
+        $this->primed = $primed;
+        return true;
+    }
+
     public function compareExpectations(array $expected): bool {
         foreach ($expected as $table => $info) {
             $cols = implode(",", array_keys($info['columns']));
@@ -126,11 +137,12 @@ trait Setup {
                 $rows[] = array_intersect_key($row, $keys);
             }
             // compare the result set to the expectations
-            foreach ($expected as $index => $exp) {
-                $this->assertContains($exp, $rows, "Result set does not contain record at array index $index.");
-                $found = array_search($exp, $rows, true);
-                unset($rows[$found]);
+            foreach ($rows as $row) {
+                $this->assertContains($row, $expected, "Result set contains unexpected record.");
+                $found = array_search($row, $expected);
+                unset($expected[$found]);
             }
+            $this->assertArraySubset($expected, [], "Expectations not in result set.");
         }
     }
 }