# Elasticsearch Unit test using Test-containers
**URL:** https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831
**Category:** Elasticsearch
**Tags:** docker, language-clients
**Created:** [June 13, 2023, 7:52am UTC](https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831 "2023-06-13T07:52:46Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@tcpeiris](https://discuss.elastic.co/u/tcpeiris)
#### Post date: [June 13, 2023, 7:52am UTC](https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831/1 "2023-06-13T07:52:46Z")
```auto
@TestConfiguration
public class ESRestClientTestConfig {
private static final String ELASTICSEARCH_VERSION = "8.7.0";
private static final DockerImageName ELASTICSEARCH_IMAGE = DockerImageName
.parse("docker.elastic.co/elasticsearch/elasticsearch")
.withTag(ELASTICSEARCH_VERSION);
/**
* Elasticsearch default username, when secured
*/
private static final String ELASTICSEARCH_USERNAME = "elastic";
/**
* Optionally activate security with a default password.
*/
private static final String ELASTICSEARCH_PASSWORD = "changeme";
@Container
private static final ElasticsearchContainer container = new ElasticsearchContainer(ELASTICSEARCH_IMAGE)
.withPassword(ELASTICSEARCH_PASSWORD);
@Bean
public ElasticsearchContainer elasticsearchContainer() {
return container;
}
@Bean
public ElasticsearchClient elasticsearchClient() {
final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(
AuthScope.ANY,
new UsernamePasswordCredentials(ELASTICSEARCH_USERNAME, ELASTICSEARCH_PASSWORD));
String protocol = container.caCertAsBytes().isPresent() ? "https://" : "http://";
RestClient restClient = RestClient
.builder(HttpHost.create(protocol + container.getHttpHostAddress()))
.setHttpClientConfigCallback(httpClientBuilder -> {
if (container.caCertAsBytes().isPresent()) {
httpClientBuilder.setSSLContext(container.createSslContextFromCa());
}
return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
})
.build();
// Create the transport with a Jackson mapper
ElasticsearchTransport transport = new RestClientTransport(restClient, new JacksonJsonpMapper());
// And create the API client
return new ElasticsearchClient(transport);
}
}
```
Will this test configuration works for elasticsearch test containers
I need to write unit tests for a specific class that interacts with Elasticsearch. There will be only data retrieving and I need this test configuration file to be reused.
---
### Author:  [@swallez](https://discuss.elastic.co/u/swallez)
#### Post date: [June 13, 2023, 8:26am UTC](https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831/2 "2023-06-13T08:26:44Z")
> Will this test configuration works for elasticsearch test containers
Have you tested it before asking? 😉
We use TestContainers for integration tests in the Java client, you can look at [the test helper code](https://github.com/elastic/elasticsearch-java/blob/9246eabcd2a4652704e7a34ece9647f60ff69bf7/java-client/src/test/java/co/elastic/clients/elasticsearch/ElasticsearchTestServer.java#L73) to see how to use it, in particular to setup the SSL context.
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [June 13, 2023, 9:35am UTC](https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831/3 "2023-06-13T09:35:02Z")
Also look at this example in case it helps 😉
>
---
### Author:  [@tcpeiris](https://discuss.elastic.co/u/tcpeiris)
#### Post date: [June 13, 2023, 9:43am UTC](https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831/4 "2023-06-13T09:43:26Z")
Thank you 🙂 . I tried it out. But faced some issues in the Unit tests. That's why I looked for a reference to confirm whether I have taken the correct approach.
---
### Author:  [@tcpeiris](https://discuss.elastic.co/u/tcpeiris)
#### Post date: [June 13, 2023, 9:44am UTC](https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831/5 "2023-06-13T09:44:07Z")
Thank you 🙂 . Will look into it
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 11, 2023, 9:44am UTC](https://discuss.elastic.co/t/elasticsearch-unit-test-using-test-containers/335831/6 "2023-07-11T09:44:34Z")
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