refactor(core): Migrate DB setup to use DI (#15324)

packages/cli/test/integration/executions-pruning.service.test.ts

@@ -6,6 +6,7 @@ import { BinaryDataService, InstanceSettings } from 'n8n-core';
 import type { ExecutionStatus, IWorkflowBase } from 'n8n-workflow';
 
 import { Time } from '@/constants';
+import { DbConnection } from '@/databases/db-connection';
 import { ExecutionsPruningService } from '@/services/pruning/executions-pruning.service';
 
 import {
@@ -34,6 +35,7 @@ describe('softDeleteOnPruningCycle()', () => {
 		pruningService = new ExecutionsPruningService(
 			mockLogger(),
 			instanceSettings,
+			Container.get(DbConnection),
 			Container.get(ExecutionRepository),
 			mockInstance(BinaryDataService),
 			executionsConfig,

packages/cli/test/integration/import.service.test.ts

@@ -21,7 +21,6 @@ import {
 	newWorkflow,
 } from './shared/db/workflows';
 import * as testDb from './shared/test-db';
-import { mockInstance } from '../shared/mocking';
 
 describe('ImportService', () => {
 	let importService: ImportService;
@@ -37,9 +36,7 @@ describe('ImportService', () => {
 
 		tagRepository = Container.get(TagRepository);
 
-		const credentialsRepository = mockInstance(CredentialsRepository);
-
-		credentialsRepository.find.mockResolvedValue([]);
+		const credentialsRepository = Container.get(CredentialsRepository);
 
 		importService = new ImportService(mock(), credentialsRepository, tagRepository);
 	});

packages/cli/test/integration/shared/test-db.ts

@@ -5,8 +5,8 @@ import type { DataSourceOptions } from '@n8n/typeorm';
 import { DataSource as Connection } from '@n8n/typeorm';
 import { randomString } from 'n8n-workflow';
 
-import { getOptionOverrides } from '@/databases/config';
-import * as Db from '@/db';
+import { DbConnection } from '@/databases/db-connection';
+import { DbConnectionOptions } from '@/databases/db-connection-options';
 
 export const testDbPrefix = 'n8n_test_';
 
@@ -34,20 +34,23 @@ export async function init() {
 		globalConfig.database.mysqldb.database = testDbName;
 	}
 
-	await Db.init();
-	await Db.migrate();
+	const dbConnection = Container.get(DbConnection);
+	await dbConnection.init();
+	await dbConnection.migrate();
 }
 
 export function isReady() {
-	return Db.connectionState.connected && Db.connectionState.migrated;
+	const { connectionState } = Container.get(DbConnection);
+	return connectionState.connected && connectionState.migrated;
 }
 
 /**
  * Drop test DB, closing bootstrap connection if existing.
  */
 export async function terminate() {
-	await Db.close();
-	Db.connectionState.connected = false;
+	const dbConnection = Container.get(DbConnection);
+	await dbConnection.close();
+	dbConnection.connectionState.connected = false;
 }
 
 type EntityName = keyof typeof entities | 'InsightsRaw' | 'InsightsByPeriod' | 'InsightsMetadata';
@@ -71,7 +74,7 @@ export const getBootstrapDBOptions = (dbType: 'postgresdb' | 'mysqldb'): DataSou
 	const type = dbType === 'postgresdb' ? 'postgres' : 'mysql';
 	return {
 		type,
-		...getOptionOverrides(dbType),
+		...Container.get(DbConnectionOptions).getOverrides(dbType),
 		database: type,
 		entityPrefix: globalConfig.database.tablePrefix,
 		schema: dbType === 'postgresdb' ? globalConfig.database.postgresdb.schema : undefined,