feat(catalog-backend): temporary named test db support to aid in debugging

Fully aware that this isn't pretty. But since I am in the process of debugging migrations and catalog stuff and want to easily run manually against several databases while waiting for proper testcontainers and e2e tests, this at least lets me gain some confidence short term.

plugins/catalog-backend/src/database/CommonDatabase.test.ts

@@ -124,7 +124,7 @@ describe('CommonDatabase', () => {
         {
           ...output,
           status: DatabaseLocationUpdateLogStatus.FAIL,
-          timestamp: expect.any(String),
+          timestamp: expect.anything(),
         },
       ]),
     );
@@ -191,24 +191,26 @@ describe('CommonDatabase', () => {
       const result = await db.locationHistory(
         'dd12620d-0436-422f-93bd-929aa0788123',
       );
-      expect(result).toEqual([
-        {
-          created_at: expect.anything(),
-          entity_name: null,
-          id: expect.anything(),
-          location_id: 'dd12620d-0436-422f-93bd-929aa0788123',
-          message: null,
-          status: DatabaseLocationUpdateLogStatus.SUCCESS,
-        },
-        {
-          created_at: expect.anything(),
-          entity_name: null,
-          id: expect.anything(),
-          location_id: 'dd12620d-0436-422f-93bd-929aa0788123',
-          message: 'Something went wrong',
-          status: DatabaseLocationUpdateLogStatus.FAIL,
-        },
-      ]);
+      expect(result).toEqual(
+        expect.arrayContaining([
+          {
+            created_at: expect.anything(),
+            entity_name: null,
+            id: expect.anything(),
+            location_id: 'dd12620d-0436-422f-93bd-929aa0788123',
+            message: null,
+            status: DatabaseLocationUpdateLogStatus.SUCCESS,
+          },
+          {
+            created_at: expect.anything(),
+            entity_name: null,
+            id: expect.anything(),
+            location_id: 'dd12620d-0436-422f-93bd-929aa0788123',
+            message: 'Something went wrong',
+            status: DatabaseLocationUpdateLogStatus.FAIL,
+          },
+        ]),
+      );
     });
   });
 

plugins/catalog-backend/src/database/DatabaseManager.ts

@@ -19,6 +19,7 @@ import Knex from 'knex';
 import { Logger } from 'winston';
 import { CommonDatabase } from './CommonDatabase';
 import { Database } from './types';
+import { v4 as uuidv4 } from 'uuid';
 
 const migrationsDir = resolvePackagePath(
   '@backstage/plugin-catalog-backend',
@@ -60,17 +61,40 @@ export class DatabaseManager {
   }
 
   public static async createTestDatabase(): Promise<Database> {
-    const knex = Knex({
+    const config: Knex.Config<any> = {
+      /*
+      client: 'pg',
+      connection: {
+        host: 'localhost',
+        user: 'postgres',
+        password: 'postgres',
+      },
+      */
       client: 'sqlite3',
       connection: ':memory:',
       useNullAsDefault: true,
-    });
+    };
+
+    let knex = Knex(config);
+    if (typeof config.connection !== 'string') {
+      const tempDbName = `d${uuidv4().replace(/-/g, '')}`;
+      await knex.raw(`CREATE DATABASE ${tempDbName};`);
+      knex = Knex({
+        ...config,
+        connection: {
+          ...config.connection,
+          database: tempDbName,
+        },
+      });
+    }
+
     knex.client.pool.on('createSuccess', (_eventId: any, resource: any) => {
       resource.run('PRAGMA foreign_keys = ON', () => {});
     });
     await knex.migrate.latest({
       directory: migrationsDir,
     });
+
     const { logger } = defaultOptions;
     return new CommonDatabase(knex, logger);
   }