***

title: "RegisterInitializer"
generated: true
---------------

<GenerationInfo sourceFile="packages/testing/src/initializers/initializers.ts" sourceLine="16" packageName="@vendure/testing" />

Registers a [TestDbInitializer](/current/core/reference/typescript-api/testing/test-db-initializer#testdbinitializer) for the given database type. Should be called before invoking
[createTestEnvironment](/current/core/reference/typescript-api/testing/create-test-environment#createtestenvironment).

```ts title="Signature"
function registerInitializer(type: DataSourceOptions['type'], initializer: TestDbInitializer<any>): void
```

Parameters

### type

\<MemberInfo kind="parameter" type={`DataSourceOptions['type']`} />

### initializer

\<MemberInfo kind="parameter" type={`<a href='/current/core/reference/typescript-api/testing/test-db-initializer#testdbinitializer'>TestDbInitializer</a><any>`} />