diff --git a/tests/cases/Database/TestDatabase.php b/tests/cases/Database/TestDatabase.php
index 00838b3a..7408d7cd 100644
--- a/tests/cases/Database/TestDatabase.php
+++ b/tests/cases/Database/TestDatabase.php
@@ -10,6 +10,152 @@ use JKingWeb\Arsse\Database;
 
 /** @covers \JKingWeb\Arsse\Database */
 class TestDatabase extends \JKingWeb\Arsse\Test\AbstractTest {
+    protected const COL_DEFS = [
+        'arsse_meta' => [
+            'key' => "strict str",
+            'value' => "str",
+        ],
+        'arsse_users' => [
+            'id' => "strict str",
+            'password' => "str",
+            'num' => "strict int",
+            'admin' => "strict bool",
+        ],
+        'arsse_user_meta' => [
+            'owner' => "strict str",
+            'key' => "strict str",
+            'modified' => "strict datetime",
+            'value' => "str",
+        ],
+        'arsse_sessions' => [
+            'id' => "strict str",
+            'created' => "strict datetime",
+            'expires' => "strict datetime",
+            'user' => "strict str",
+        ],
+        'arsse_tokens' => [
+            'id' => "strict str",
+            'class' => "strict str",
+            'user' => "strict str",
+            'created' => "strict datetime",
+            'expires' => "datetime",
+            'data' => "str",
+        ],
+        'arsse_feeds' => [
+            'id' => "int",
+            'url' => "strict str",
+            'title' => "str",
+            'source' => "str",
+            'updated' => "datetime",
+            'modified' => "datetime",
+            'next_fetch' => "datetime",
+            'orphaned' => "datetime",
+            'etag' => "strict str",
+            'err_count' => "strict int",
+            'err_msg' => "str",
+            'username' => "strict str",
+            'password' => "strict str",
+            'size' => "strict int",
+            'icon' => "int",
+        ],
+        'arsse_icons' => [
+            'id' => "int",
+            'url' => "strict str",
+            'modified' => "datetime",
+            'etag' => "strict str",
+            'next_fetch' => "datetime",
+            'orphaned' => "datetime",
+            'type' => "str",
+            'data' => "blob",
+        ],
+        'arsse_articles' => [
+            'id' => "int",
+            'feed' => "strict int",
+            'url' => "str",
+            'title' => "str",
+            'author' => "str",
+            'published' => "datetime",
+            'edited' => "datetime",
+            'modified' => "strict datetime",
+            'guid' => "str",
+            'url_title_hash' => "strict str",
+            'url_content_hash' => "strict str",
+            'title_content_hash' => "strict str",
+            'content_scraped' => "str",
+            'content' => "str",
+        ],
+        'arsse_editions' => [
+            'id' => "int",
+            'article' => "strict int",
+            'modified' => "strict datetime",
+        ],
+        'arsse_enclosures' => [
+            'article' => "strict int",
+            'url' => "str",
+            'type' => "str",
+        ],
+        'arsse_categories' => [
+            'article' => "strict int",
+            'name' => "str",
+        ],
+        'arsse_marks' => [
+            'article' => "strict int",
+            'subscription' => "strict int",
+            'read' => "strict bool",
+            'starred' => "strict bool",
+            'modified' => "datetime",
+            'note' => "strict str",
+            'touched' => "strict bool",
+            'hidden' => "strict bool",
+        ],
+        'arsse_subscriptions' => [
+            'id' => "int",
+            'owner' => "strict str",
+            'feed' => "strict int",
+            'added' => "strict datetime",
+            'modified' => "strict datetime",
+            'title' => "str",
+            'order_type' => "strict int",
+            'pinned' => "strict bool",
+            'folder' => "int",
+            'keep_rule' => "str",
+            'block_rule' => "str",
+            'scrape' => "strict bool",
+        ],
+        'arsse_folders' => [
+            'id' => "int",
+            'owner' => "strict str",
+            'parent' => "int",
+            'name' => "strict str",
+            'modified' => "strict datetime",
+        ],
+        'arsse_tags' => [
+            'id' => "int",
+            'owner' => "strict str",
+            'name' => "strict str",
+            'modified' => "strict datetime",
+        ],
+        'arsse_tag_members' => [
+            'tag' => "strict int",
+            'subscription' => "strict int",
+            'assigned' => "strict bool",
+            'modified' => "strict datetime",
+        ],
+        'arsse_labels' => [
+            'id' => "int",
+            'owner' => "strict str",
+            'name' => "strict str",
+            'modified' => "strict datetime",
+        ],
+        'arsse_label_members' => [
+            'label' => "strict int",
+            'article' => "strict int",
+            'subscription' => "strict int",
+            'assigned' => "strict bool",
+            'modified' => "strict datetime",
+        ],
+    ];
+
     protected $db = null;
 
     public function setUp(): void {