Mache Charakterentwicklungsmigration wiederholbar

backend/tools/characterDevelopment.test.mjs

@@ -71,6 +71,31 @@ test('database migration, persistence and daemon conception paths', {
         await assert.rejects(db.query(`INSERT INTO falukant_data.character
             (puberty_start_age, fertile_from_age) VALUES (12, 11)`));
 
+        await t.test('repeating the migration preserves all existing character data', async () => {
+            const [saved] = await db.query('SELECT * FROM falukant_data.character ORDER BY id');
+            await migration.up(qi);
+            const [repeated] = await db.query('SELECT * FROM falukant_data.character ORDER BY id');
+            assert.deepEqual(repeated, saved);
+        });
+
+        for (const bothColumns of [true, false]) {
+            await t.test(`manually prepared schema with ${bothColumns ? 'both columns' : 'one column'}`, async () => {
+                await migration.down(qi);
+                await db.query(`ALTER TABLE falukant_data.character ADD COLUMN puberty_start_age SMALLINT`);
+                if (bothColumns) {
+                    await db.query(`ALTER TABLE falukant_data.character ADD COLUMN fertile_from_age SMALLINT;
+                        UPDATE falukant_data.character SET fertile_from_age = 13 WHERE id = 1`);
+                }
+                await db.query(`UPDATE falukant_data.character SET puberty_start_age = 10 WHERE id = 1`);
+                await migration.up(qi);
+                const [characters] = await db.query('SELECT * FROM falukant_data.character ORDER BY id');
+                assert.equal(characters[0].puberty_start_age, 10);
+                if (bothColumns) assert.equal(characters[0].fertile_from_age, 13);
+                assert.deepEqual(characters[0].pregnancy_due_at, before[0].pregnancy_due_at);
+                assert.ok(characters.every(c => c.fertile_from_age > c.puberty_start_age));
+            });
+        }
+
         await t.test('daemon checks both parents and preserves already scheduled births', {
             skip: !process.env.DAEMON_SQL_PATH,
         }, async () => {