Make metrics reflect autoscaling policies (Refs #137)

tests/unit/database-migrations.test.ts

@@ -138,3 +138,32 @@ it('rejects a database from a newer application without changing its version or
         inspect.close();
     }
 });
+
+it('adds policy report invalidation when upgrading a database at version 12', async () => {
+    const { db, closeDb } = await import('../../src/lib/server/db/index.js');
+    const handle = db();
+    for (const table of ['autoscaling_policies', 'settings'])
+        for (const action of ['INSERT', 'UPDATE', 'DELETE'])
+            handle.exec(`DROP TRIGGER report_metrics_${table}_${action}`);
+    handle.pragma('user_version = 12');
+    closeDb();
+    const upgraded = db();
+    const revision = () =>
+        (
+            upgraded
+                .prepare("SELECT revision FROM report_revisions WHERE topic='metrics'")
+                .get() as { revision: number }
+        ).revision;
+    const before = revision();
+    upgraded
+        .prepare(
+            "INSERT INTO settings(key,value) VALUES('autoscaling_paused','1') ON CONFLICT(key) DO UPDATE SET value='1'"
+        )
+        .run();
+    expect(revision()).toBeGreaterThan(before);
+    const paused = revision();
+    upgraded.prepare("INSERT INTO settings(key,value) VALUES('unrelated-setting','1')").run();
+    expect(revision()).toBe(paused);
+    upgraded.prepare("DELETE FROM settings WHERE key='autoscaling_paused'").run();
+    expect(revision()).toBeGreaterThan(paused);
+});