diff --git a/tests/cases/Db/MySQL/TestDatabase.php b/tests/cases/Db/MySQL/TestDatabase.php
index 4e4f9c5..eaf19bb 100644
--- a/tests/cases/Db/MySQL/TestDatabase.php
+++ b/tests/cases/Db/MySQL/TestDatabase.php
@@ -13,7 +13,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQL;
  * @covers \JKingWeb\Arsse\Misc\Query<extended>
  */
 class TestDatabase extends \JKingWeb\Arsse\TestCase\Database\Base {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQL;
 
     protected function nextID(string $table): int {
         return (int) (static::$drv->query("SELECT (case when max(id) then max(id) else 0 end)+1 from $table")->getValue() ?? 1);
diff --git a/tests/cases/Db/MySQL/TestDriver.php b/tests/cases/Db/MySQL/TestDriver.php
index d3059ba..1f8240e 100644
--- a/tests/cases/Db/MySQL/TestDriver.php
+++ b/tests/cases/Db/MySQL/TestDriver.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQL;
  * @covers \JKingWeb\Arsse\Db\MySQL\ExceptionBuilder
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestDriver extends \JKingWeb\Arsse\TestCase\Db\BaseDriver {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQL;
 
     protected $create = "CREATE TABLE arsse_test(id bigint auto_increment primary key)";
     protected $lock = ["SET lock_wait_timeout = 1", "LOCK TABLES arsse_meta WRITE"];
diff --git a/tests/cases/Db/MySQL/TestResult.php b/tests/cases/Db/MySQL/TestResult.php
index 2d58aa4..646e687 100644
--- a/tests/cases/Db/MySQL/TestResult.php
+++ b/tests/cases/Db/MySQL/TestResult.php
@@ -14,7 +14,7 @@ use JKingWeb\Arsse\Test\DatabaseInformation;
  * @covers \JKingWeb\Arsse\Db\MySQL\ExceptionBuilder
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestResult extends \JKingWeb\Arsse\TestCase\Db\BaseResult {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQL;
 
     protected static $createMeta = "CREATE TABLE arsse_meta(`key` varchar(255) primary key not null, value text)";
     protected static $createTest = "CREATE TABLE arsse_test(id bigint auto_increment primary key)";
diff --git a/tests/cases/Db/MySQL/TestStatement.php b/tests/cases/Db/MySQL/TestStatement.php
index ba07835..4fcf2ef 100644
--- a/tests/cases/Db/MySQL/TestStatement.php
+++ b/tests/cases/Db/MySQL/TestStatement.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQL;
  * @covers \JKingWeb\Arsse\Db\MySQL\ExceptionBuilder
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestStatement extends \JKingWeb\Arsse\TestCase\Db\BaseStatement {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQL;
 
     protected function makeStatement(string $q, array $types = []): array {
         return [static::$interface, $q, $types];
diff --git a/tests/cases/Db/MySQL/TestUpdate.php b/tests/cases/Db/MySQL/TestUpdate.php
index 09c5261..df7808e 100644
--- a/tests/cases/Db/MySQL/TestUpdate.php
+++ b/tests/cases/Db/MySQL/TestUpdate.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQL;
  * @covers \JKingWeb\Arsse\Db\MySQL\ExceptionBuilder
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestUpdate extends \JKingWeb\Arsse\TestCase\Db\BaseUpdate {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQL;
 
     protected static $minimal1 = "CREATE TABLE arsse_meta(`key` varchar(255) primary key, value text); INSERT INTO arsse_meta(`key`,value) values('schema_version','1');";
     protected static $minimal2 = "UPDATE arsse_meta set value = '2' where `key` = 'schema_version';";
diff --git a/tests/cases/Db/MySQLPDO/TestDatabase.php b/tests/cases/Db/MySQLPDO/TestDatabase.php
index 6409d12..1b12566 100644
--- a/tests/cases/Db/MySQLPDO/TestDatabase.php
+++ b/tests/cases/Db/MySQLPDO/TestDatabase.php
@@ -14,7 +14,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQLPDO;
  * @covers \JKingWeb\Arsse\Misc\Query<extended>
  */
 class TestDatabase extends \JKingWeb\Arsse\TestCase\Database\Base {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQLPDO;
 
     protected function nextID(string $table): int {
         return (int) (static::$drv->query("SELECT (case when max(id) then max(id) else 0 end)+1 from $table")->getValue() ?? 1);
diff --git a/tests/cases/Db/MySQLPDO/TestDriver.php b/tests/cases/Db/MySQLPDO/TestDriver.php
index 3380a82..ee46ba9 100644
--- a/tests/cases/Db/MySQLPDO/TestDriver.php
+++ b/tests/cases/Db/MySQLPDO/TestDriver.php
@@ -14,7 +14,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQLPDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestDriver extends \JKingWeb\Arsse\TestCase\Db\BaseDriver {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQLPDO;
 
     protected $create = "CREATE TABLE arsse_test(id bigint auto_increment primary key)";
     protected $lock = ["SET lock_wait_timeout = 1", "LOCK TABLES arsse_meta WRITE"];
diff --git a/tests/cases/Db/MySQLPDO/TestResult.php b/tests/cases/Db/MySQLPDO/TestResult.php
index 5c31c54..03338fb 100644
--- a/tests/cases/Db/MySQLPDO/TestResult.php
+++ b/tests/cases/Db/MySQLPDO/TestResult.php
@@ -15,7 +15,7 @@ use JKingWeb\Arsse\Test\DatabaseInformation;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestResult extends \JKingWeb\Arsse\TestCase\Db\BaseResult {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQLPDO;
 
     protected static $createMeta = "CREATE TABLE arsse_meta(`key` varchar(255) primary key not null, value text)";
     protected static $createTest = "CREATE TABLE arsse_test(id bigint auto_increment primary key)";
diff --git a/tests/cases/Db/MySQLPDO/TestStatement.php b/tests/cases/Db/MySQLPDO/TestStatement.php
index 0f4572e..a6d0706 100644
--- a/tests/cases/Db/MySQLPDO/TestStatement.php
+++ b/tests/cases/Db/MySQLPDO/TestStatement.php
@@ -13,7 +13,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQLPDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestStatement extends \JKingWeb\Arsse\TestCase\Db\BaseStatement {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQLPDO;
 
     protected function makeStatement(string $q, array $types = []): array {
         return [static::$interface, $q, $types];
diff --git a/tests/cases/Db/MySQLPDO/TestUpdate.php b/tests/cases/Db/MySQLPDO/TestUpdate.php
index e0c2e24..8b0594e 100644
--- a/tests/cases/Db/MySQLPDO/TestUpdate.php
+++ b/tests/cases/Db/MySQLPDO/TestUpdate.php
@@ -14,7 +14,7 @@ namespace JKingWeb\Arsse\TestCase\Db\MySQLPDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestUpdate extends \JKingWeb\Arsse\TestCase\Db\BaseUpdate {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\MySQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\MySQLPDO;
 
     protected static $minimal1 = "CREATE TABLE arsse_meta(`key` varchar(255) primary key, value text); INSERT INTO arsse_meta(`key`,value) values('schema_version','1');";
     protected static $minimal2 = "UPDATE arsse_meta set value = '2' where `key` = 'schema_version';";
diff --git a/tests/cases/Db/PostgreSQL/TestDatabase.php b/tests/cases/Db/PostgreSQL/TestDatabase.php
index d92c62b..f2277af 100644
--- a/tests/cases/Db/PostgreSQL/TestDatabase.php
+++ b/tests/cases/Db/PostgreSQL/TestDatabase.php
@@ -13,7 +13,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQL;
  * @covers \JKingWeb\Arsse\Misc\Query<extended>
  */
 class TestDatabase extends \JKingWeb\Arsse\TestCase\Database\Base {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQL;
 
     protected function nextID(string $table): int {
         return (int) static::$drv->query("SELECT coalesce(last_value, (select max(id) from $table)) + 1 from pg_sequences where sequencename = '{$table}_id_seq'")->getValue();
diff --git a/tests/cases/Db/PostgreSQL/TestDriver.php b/tests/cases/Db/PostgreSQL/TestDriver.php
index 119e6c0..ee5a9ba 100644
--- a/tests/cases/Db/PostgreSQL/TestDriver.php
+++ b/tests/cases/Db/PostgreSQL/TestDriver.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQL;
  * @covers \JKingWeb\Arsse\Db\PostgreSQL\Dispatch<extended>
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestDriver extends \JKingWeb\Arsse\TestCase\Db\BaseDriver {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQL;
 
     protected $create = "CREATE TABLE arsse_test(id bigserial primary key)";
     protected $lock = ["BEGIN", "LOCK TABLE arsse_meta IN EXCLUSIVE MODE NOWAIT"];
diff --git a/tests/cases/Db/PostgreSQL/TestResult.php b/tests/cases/Db/PostgreSQL/TestResult.php
index 23b44c8..6044176 100644
--- a/tests/cases/Db/PostgreSQL/TestResult.php
+++ b/tests/cases/Db/PostgreSQL/TestResult.php
@@ -13,7 +13,7 @@ use JKingWeb\Arsse\Test\DatabaseInformation;
  * @covers \JKingWeb\Arsse\Db\PostgreSQL\Result<extended>
  */
 class TestResult extends \JKingWeb\Arsse\TestCase\Db\BaseResult {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQL;
 
     protected static $createMeta = "CREATE TABLE arsse_meta(key text primary key not null, value text)";
     protected static $createTest = "CREATE TABLE arsse_test(id bigserial primary key)";
diff --git a/tests/cases/Db/PostgreSQL/TestStatement.php b/tests/cases/Db/PostgreSQL/TestStatement.php
index d181881..3e3008e 100644
--- a/tests/cases/Db/PostgreSQL/TestStatement.php
+++ b/tests/cases/Db/PostgreSQL/TestStatement.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQL;
  * @covers \JKingWeb\Arsse\Db\PostgreSQL\Dispatch<extended>
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestStatement extends \JKingWeb\Arsse\TestCase\Db\BaseStatement {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQL;
 
     protected function makeStatement(string $q, array $types = []): array {
         return [static::$interface, $q, $types];
diff --git a/tests/cases/Db/PostgreSQL/TestUpdate.php b/tests/cases/Db/PostgreSQL/TestUpdate.php
index ce54eb0..0117a34 100644
--- a/tests/cases/Db/PostgreSQL/TestUpdate.php
+++ b/tests/cases/Db/PostgreSQL/TestUpdate.php
@@ -11,7 +11,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQL;
  * @covers \JKingWeb\Arsse\Db\PostgreSQL\Driver<extended>
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestUpdate extends \JKingWeb\Arsse\TestCase\Db\BaseUpdate {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQL;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQL;
 
     protected static $minimal1 = "CREATE TABLE arsse_meta(key text primary key, value text); INSERT INTO arsse_meta(key,value) values('schema_version','1');";
     protected static $minimal2 = "UPDATE arsse_meta set value = '2' where key = 'schema_version';";
diff --git a/tests/cases/Db/PostgreSQLPDO/TestDatabase.php b/tests/cases/Db/PostgreSQLPDO/TestDatabase.php
index d6192d6..810c13c 100644
--- a/tests/cases/Db/PostgreSQLPDO/TestDatabase.php
+++ b/tests/cases/Db/PostgreSQLPDO/TestDatabase.php
@@ -14,7 +14,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQLPDO;
  * @covers \JKingWeb\Arsse\Misc\Query<extended>
  */
 class TestDatabase extends \JKingWeb\Arsse\TestCase\Database\Base {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQLPDO;
 
     protected function nextID(string $table): int {
         return (int) static::$drv->query("SELECT coalesce(last_value, (select max(id) from $table)) + 1 from pg_sequences where sequencename = '{$table}_id_seq'")->getValue();
diff --git a/tests/cases/Db/PostgreSQLPDO/TestDriver.php b/tests/cases/Db/PostgreSQLPDO/TestDriver.php
index 58b793f..b87828c 100644
--- a/tests/cases/Db/PostgreSQLPDO/TestDriver.php
+++ b/tests/cases/Db/PostgreSQLPDO/TestDriver.php
@@ -13,7 +13,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQLPDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestDriver extends \JKingWeb\Arsse\TestCase\Db\BaseDriver {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQLPDO;
 
     protected $create = "CREATE TABLE arsse_test(id bigserial primary key)";
     protected $lock = ["BEGIN", "LOCK TABLE arsse_meta IN EXCLUSIVE MODE NOWAIT"];
diff --git a/tests/cases/Db/PostgreSQLPDO/TestResult.php b/tests/cases/Db/PostgreSQLPDO/TestResult.php
index 2877dde..d2e2e8d 100644
--- a/tests/cases/Db/PostgreSQLPDO/TestResult.php
+++ b/tests/cases/Db/PostgreSQLPDO/TestResult.php
@@ -13,7 +13,7 @@ use JKingWeb\Arsse\Test\DatabaseInformation;
  * @covers \JKingWeb\Arsse\Db\PDOResult<extended>
  */
 class TestResult extends \JKingWeb\Arsse\TestCase\Db\BaseResult {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQLPDO;
 
     protected static $createMeta = "CREATE TABLE arsse_meta(key text primary key not null, value text)";
     protected static $createTest = "CREATE TABLE arsse_test(id bigserial primary key)";
diff --git a/tests/cases/Db/PostgreSQLPDO/TestStatement.php b/tests/cases/Db/PostgreSQLPDO/TestStatement.php
index 7730dc8..926df76 100644
--- a/tests/cases/Db/PostgreSQLPDO/TestStatement.php
+++ b/tests/cases/Db/PostgreSQLPDO/TestStatement.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQLPDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestStatement extends \JKingWeb\Arsse\TestCase\Db\BaseStatement {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQLPDO;
 
     protected function makeStatement(string $q, array $types = []): array {
         return [static::$interface, $q, $types];
diff --git a/tests/cases/Db/PostgreSQLPDO/TestUpdate.php b/tests/cases/Db/PostgreSQLPDO/TestUpdate.php
index c7cba92..e327809 100644
--- a/tests/cases/Db/PostgreSQLPDO/TestUpdate.php
+++ b/tests/cases/Db/PostgreSQLPDO/TestUpdate.php
@@ -13,7 +13,7 @@ namespace JKingWeb\Arsse\TestCase\Db\PostgreSQLPDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestUpdate extends \JKingWeb\Arsse\TestCase\Db\BaseUpdate {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\PostgreSQLPDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\PostgreSQLPDO;
 
     protected static $minimal1 = "CREATE TABLE arsse_meta(key text primary key, value text); INSERT INTO arsse_meta(key,value) values('schema_version','1');";
     protected static $minimal2 = "UPDATE arsse_meta set value = '2' where key = 'schema_version';";
diff --git a/tests/cases/Db/SQLite3/TestDatabase.php b/tests/cases/Db/SQLite3/TestDatabase.php
index f67d545..3fb1139 100644
--- a/tests/cases/Db/SQLite3/TestDatabase.php
+++ b/tests/cases/Db/SQLite3/TestDatabase.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3;
  * @covers \JKingWeb\Arsse\Misc\Query<extended>
  */
 class TestDatabase extends \JKingWeb\Arsse\TestCase\Database\Base {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3;
 
     protected function nextID(string $table): int {
         return static::$drv->query("SELECT (case when max(id) then max(id) else 0 end)+1 from $table")->getValue();
diff --git a/tests/cases/Db/SQLite3/TestDriver.php b/tests/cases/Db/SQLite3/TestDriver.php
index e1671b9..03ddf5a 100644
--- a/tests/cases/Db/SQLite3/TestDriver.php
+++ b/tests/cases/Db/SQLite3/TestDriver.php
@@ -10,7 +10,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3;
  * @covers \JKingWeb\Arsse\Db\SQLite3\Driver<extended>
  * @covers \JKingWeb\Arsse\Db\SQLite3\ExceptionBuilder */
 class TestDriver extends \JKingWeb\Arsse\TestCase\Db\BaseDriver {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3;
 
     protected $create = "CREATE TABLE arsse_test(id integer primary key)";
     protected $lock = "BEGIN EXCLUSIVE TRANSACTION";
diff --git a/tests/cases/Db/SQLite3/TestResult.php b/tests/cases/Db/SQLite3/TestResult.php
index 74fd293..298271a 100644
--- a/tests/cases/Db/SQLite3/TestResult.php
+++ b/tests/cases/Db/SQLite3/TestResult.php
@@ -12,7 +12,7 @@ use JKingWeb\Arsse\Test\DatabaseInformation;
  * @covers \JKingWeb\Arsse\Db\SQLite3\Result<extended>
  */
 class TestResult extends \JKingWeb\Arsse\TestCase\Db\BaseResult {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3;
 
     protected static $createMeta = "CREATE TABLE arsse_meta(key text primary key not null, value text) without rowid";
     protected static $createTest = "CREATE TABLE arsse_test(id integer primary key)";
diff --git a/tests/cases/Db/SQLite3/TestStatement.php b/tests/cases/Db/SQLite3/TestStatement.php
index afd5902..f86ac7f 100644
--- a/tests/cases/Db/SQLite3/TestStatement.php
+++ b/tests/cases/Db/SQLite3/TestStatement.php
@@ -10,7 +10,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3;
  * @covers \JKingWeb\Arsse\Db\SQLite3\Statement<extended>
  * @covers \JKingWeb\Arsse\Db\SQLite3\ExceptionBuilder */
 class TestStatement extends \JKingWeb\Arsse\TestCase\Db\BaseStatement {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3;
 
     public static function tearDownAfterClass() {
         static::$interface->close();
diff --git a/tests/cases/Db/SQLite3/TestUpdate.php b/tests/cases/Db/SQLite3/TestUpdate.php
index 311c45c..26e9909 100644
--- a/tests/cases/Db/SQLite3/TestUpdate.php
+++ b/tests/cases/Db/SQLite3/TestUpdate.php
@@ -10,7 +10,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3;
  * @covers \JKingWeb\Arsse\Db\SQLite3\Driver<extended>
  * @covers \JKingWeb\Arsse\Db\SQLite3\ExceptionBuilder */
 class TestUpdate extends \JKingWeb\Arsse\TestCase\Db\BaseUpdate {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3;
 
     protected static $minimal1 = "create table arsse_meta(key text primary key not null, value text); pragma user_version=1";
     protected static $minimal2 = "pragma user_version=2";
diff --git a/tests/cases/Db/SQLite3PDO/TestDatabase.php b/tests/cases/Db/SQLite3PDO/TestDatabase.php
index 782b79e..504775e 100644
--- a/tests/cases/Db/SQLite3PDO/TestDatabase.php
+++ b/tests/cases/Db/SQLite3PDO/TestDatabase.php
@@ -11,7 +11,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3PDO;
  * @covers \JKingWeb\Arsse\Misc\Query<extended>
  */
 class TestDatabase extends \JKingWeb\Arsse\TestCase\Database\Base {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3PDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3PDO;
 
     protected function nextID(string $table): int {
         return (int) static::$drv->query("SELECT (case when max(id) then max(id) else 0 end)+1 from $table")->getValue();
diff --git a/tests/cases/Db/SQLite3PDO/TestDriver.php b/tests/cases/Db/SQLite3PDO/TestDriver.php
index def1e82..4c6f715 100644
--- a/tests/cases/Db/SQLite3PDO/TestDriver.php
+++ b/tests/cases/Db/SQLite3PDO/TestDriver.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3PDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestDriver extends \JKingWeb\Arsse\TestCase\Db\BaseDriver {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3PDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3PDO;
 
     protected $create = "CREATE TABLE arsse_test(id integer primary key)";
     protected $lock = "BEGIN EXCLUSIVE TRANSACTION";
diff --git a/tests/cases/Db/SQLite3PDO/TestResult.php b/tests/cases/Db/SQLite3PDO/TestResult.php
index b33e39d..4636dab 100644
--- a/tests/cases/Db/SQLite3PDO/TestResult.php
+++ b/tests/cases/Db/SQLite3PDO/TestResult.php
@@ -12,7 +12,7 @@ use JKingWeb\Arsse\Test\DatabaseInformation;
  * @covers \JKingWeb\Arsse\Db\PDOResult<extended>
  */
 class TestResult extends \JKingWeb\Arsse\TestCase\Db\BaseResult {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3PDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3PDO;
 
     protected static $createMeta = "CREATE TABLE arsse_meta(key text primary key not null, value text) without rowid";
     protected static $createTest = "CREATE TABLE arsse_test(id integer primary key)";
diff --git a/tests/cases/Db/SQLite3PDO/TestStatement.php b/tests/cases/Db/SQLite3PDO/TestStatement.php
index e25b661..2229a5d 100644
--- a/tests/cases/Db/SQLite3PDO/TestStatement.php
+++ b/tests/cases/Db/SQLite3PDO/TestStatement.php
@@ -11,7 +11,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3PDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestStatement extends \JKingWeb\Arsse\TestCase\Db\BaseStatement {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3PDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3PDO;
 
     protected function makeStatement(string $q, array $types = []): array {
         return [static::$interface, $q, $types];
diff --git a/tests/cases/Db/SQLite3PDO/TestUpdate.php b/tests/cases/Db/SQLite3PDO/TestUpdate.php
index 33904e7..964dc2d 100644
--- a/tests/cases/Db/SQLite3PDO/TestUpdate.php
+++ b/tests/cases/Db/SQLite3PDO/TestUpdate.php
@@ -12,7 +12,7 @@ namespace JKingWeb\Arsse\TestCase\Db\SQLite3PDO;
  * @covers \JKingWeb\Arsse\Db\PDOError
  * @covers \JKingWeb\Arsse\Db\SQLState */
 class TestUpdate extends \JKingWeb\Arsse\TestCase\Db\BaseUpdate {
-    use \JKingWeb\Arsse\TestCase\DatabaseDrivers\SQLite3PDO;
+    use \JKingWeb\Arsse\Test\DatabaseDrivers\SQLite3PDO;
 
     protected static $minimal1 = "create table arsse_meta(key text primary key not null, value text); pragma user_version=1";
     protected static $minimal2 = "pragma user_version=2";
diff --git a/tests/cases/DatabaseDrivers/MySQL.php b/tests/lib/DatabaseDrivers/MySQL.php
similarity index 98%
rename from tests/cases/DatabaseDrivers/MySQL.php
rename to tests/lib/DatabaseDrivers/MySQL.php
index 3d14d2e..048266d 100644
--- a/tests/cases/DatabaseDrivers/MySQL.php
+++ b/tests/lib/DatabaseDrivers/MySQL.php
@@ -4,7 +4,7 @@
  * See LICENSE and AUTHORS files for details */
 
 declare(strict_types=1);
-namespace JKingWeb\Arsse\TestCase\DatabaseDrivers;
+namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\Db\Driver;
diff --git a/tests/cases/DatabaseDrivers/MySQLPDO.php b/tests/lib/DatabaseDrivers/MySQLPDO.php
similarity index 97%
rename from tests/cases/DatabaseDrivers/MySQLPDO.php
rename to tests/lib/DatabaseDrivers/MySQLPDO.php
index def124d..2499e5d 100644
--- a/tests/cases/DatabaseDrivers/MySQLPDO.php
+++ b/tests/lib/DatabaseDrivers/MySQLPDO.php
@@ -4,7 +4,7 @@
  * See LICENSE and AUTHORS files for details */
 
 declare(strict_types=1);
-namespace JKingWeb\Arsse\TestCase\DatabaseDrivers;
+namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\Db\Driver;
diff --git a/tests/cases/DatabaseDrivers/PostgreSQL.php b/tests/lib/DatabaseDrivers/PostgreSQL.php
similarity index 98%
rename from tests/cases/DatabaseDrivers/PostgreSQL.php
rename to tests/lib/DatabaseDrivers/PostgreSQL.php
index 53791ea..c03070e 100644
--- a/tests/cases/DatabaseDrivers/PostgreSQL.php
+++ b/tests/lib/DatabaseDrivers/PostgreSQL.php
@@ -4,7 +4,7 @@
  * See LICENSE and AUTHORS files for details */
 
 declare(strict_types=1);
-namespace JKingWeb\Arsse\TestCase\DatabaseDrivers;
+namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\Db\Driver;
diff --git a/tests/cases/DatabaseDrivers/PostgreSQLPDO.php b/tests/lib/DatabaseDrivers/PostgreSQLPDO.php
similarity index 95%
rename from tests/cases/DatabaseDrivers/PostgreSQLPDO.php
rename to tests/lib/DatabaseDrivers/PostgreSQLPDO.php
index d334276..f275e70 100644
--- a/tests/cases/DatabaseDrivers/PostgreSQLPDO.php
+++ b/tests/lib/DatabaseDrivers/PostgreSQLPDO.php
@@ -4,10 +4,9 @@
  * See LICENSE and AUTHORS files for details */
 
 declare(strict_types=1);
-namespace JKingWeb\Arsse\TestCase\DatabaseDrivers;
+namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
-use JKingWeb\Arsse\Db\Driver;
 
 trait PostgreSQLPDO {
     protected static $implementation = "PDO PostgreSQL";
diff --git a/tests/cases/DatabaseDrivers/SQLite3.php b/tests/lib/DatabaseDrivers/SQLite3.php
similarity index 98%
rename from tests/cases/DatabaseDrivers/SQLite3.php
rename to tests/lib/DatabaseDrivers/SQLite3.php
index 880539a..a3e2358 100644
--- a/tests/cases/DatabaseDrivers/SQLite3.php
+++ b/tests/lib/DatabaseDrivers/SQLite3.php
@@ -4,7 +4,7 @@
  * See LICENSE and AUTHORS files for details */
 
 declare(strict_types=1);
-namespace JKingWeb\Arsse\TestCase\DatabaseDrivers;
+namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
 use JKingWeb\Arsse\Db\Driver;
diff --git a/tests/cases/DatabaseDrivers/SQLite3PDO.php b/tests/lib/DatabaseDrivers/SQLite3PDO.php
similarity index 94%
rename from tests/cases/DatabaseDrivers/SQLite3PDO.php
rename to tests/lib/DatabaseDrivers/SQLite3PDO.php
index 1598650..7f5d2a0 100644
--- a/tests/cases/DatabaseDrivers/SQLite3PDO.php
+++ b/tests/lib/DatabaseDrivers/SQLite3PDO.php
@@ -4,10 +4,9 @@
  * See LICENSE and AUTHORS files for details */
 
 declare(strict_types=1);
-namespace JKingWeb\Arsse\TestCase\DatabaseDrivers;
+namespace JKingWeb\Arsse\Test\DatabaseDrivers;
 
 use JKingWeb\Arsse\Arsse;
-use JKingWeb\Arsse\Db\Driver;
 
 trait SQLite3PDO {
     protected static $implementation = "PDO SQLite 3";