adding live test
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technoddy
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spring-boot-modules/spring-boot-logging-loki/README.md
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spring-boot-modules/spring-boot-logging-loki/README.md
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### Relevant Articles:
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41
spring-boot-modules/spring-boot-logging-loki/pom.xml
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spring-boot-modules/spring-boot-logging-loki/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>spring-boot-logging-loki</artifactId>
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<version>0.1-SNAPSHOT</version>
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<name>loki</name>
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<parent>
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<groupId>com.baeldung.spring-boot-modules</groupId>
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<artifactId>spring-boot-modules</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<dependencies>
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<dependency>
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<groupId>com.github.loki4j</groupId>
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<artifactId>loki-logback-appender</artifactId>
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<version>${loki-logback.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-devtools</artifactId>
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<scope>runtime</scope>
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<optional>true</optional>
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</dependency>
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</dependencies>
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<properties>
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<loki-logback.version>1.4.2</loki-logback.version>
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</properties>
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</project>
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package com.baeldung.loki;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Service;
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@Service
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public class DemoService {
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private final Logger LOG = LoggerFactory.getLogger(DemoService.class);
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public void log() {
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LOG.info("DemoService.log invoked!!!");
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}
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}
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package com.baeldung.extensions;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class SpringBootLogbackExtensionsApplication {
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private static final Logger logger = LoggerFactory.getLogger(SpringBootLogbackExtensionsApplication.class);
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public static void main(String[] args) {
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SpringApplication.run(SpringBootLogbackExtensionsApplication.class, args);
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logger.debug("Debug log message");
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logger.info("Info log message");
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logger.error("Error log message");
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logger.warn("Warn log message");
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logger.trace("Trace log message");
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}
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<springProperty name="name" source="spring.application.name"/>
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<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>
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{
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"level":"%level",
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"class":"%logger{36}",
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"thread":"%thread",
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"message": "%message",
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"requestId": "%X{X-Request-ID}"
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}
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</pattern>
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</encoder>
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</appender>
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<appender name="LOKI" class="com.github.loki4j.logback.Loki4jAppender">
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<http>
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<url>http://localhost:3100/loki/api/v1/push</url>
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</http>
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<format>
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<label>
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<pattern>app=${name},host=${HOSTNAME},level=%level</pattern>
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<readMarkers>true</readMarkers>
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</label>
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<message>
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<pattern>
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{
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"level":"%level",
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"class":"%logger{36}",
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"thread":"%thread",
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"message": "%message",
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"requestId": "%X{X-Request-ID}"
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}
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</pattern>
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</message>
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</format>
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</appender>
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<root level="INFO">
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<appender-ref ref="CONSOLE"/>
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<appender-ref ref="LOKI"/>
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</root>
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</configuration>
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package com.baeldung.loki;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import static org.mockito.Mockito.verify;
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import java.net.URI;
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import java.time.LocalDateTime;
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import java.time.ZoneOffset;
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import java.time.format.DateTimeFormatter;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.http.HttpEntity;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpMethod;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.client.RestTemplate;
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import org.springframework.web.util.UriComponentsBuilder;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.JsonNode;
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import com.fasterxml.jackson.databind.ObjectMapper;
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@SpringBootTest(classes = DemoService.class)
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public class DemoServiceLiveTest {
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@Test
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public void givenLokiContainerRunning_whenDemoServiceInvoked_thenLokiAppenderCollectLogs() throws JsonProcessingException, InterruptedException {
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DemoService service = new DemoService();
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service.log();
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Thread.sleep(2000);
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String baseUrl = "http://localhost:3100/loki/api/v1/query_range";
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// Set up query parameters
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HttpHeaders headers = new HttpHeaders();
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headers.setContentType(MediaType.APPLICATION_JSON);
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String query = "{level=\"INFO\"} |= `DemoService.log invoked!!!`";
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// Get current time in UTC
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LocalDateTime currentDateTime = LocalDateTime.now(ZoneOffset.UTC);
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String current_time_est = currentDateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'"));
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LocalDateTime tenMinsAgo = currentDateTime.minusMinutes(10);
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String start_time_est = tenMinsAgo.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'"));
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System.out.println(start_time_est);
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URI uri = UriComponentsBuilder.fromUriString(baseUrl)
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.queryParam("query", query)
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.queryParam("start", start_time_est)
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.queryParam("end", current_time_est)
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.build()
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.toUri();
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RestTemplate restTemplate = new RestTemplate();
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ResponseEntity<String> response = restTemplate.exchange(
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uri,
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HttpMethod.GET,
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new HttpEntity<>(headers),
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String.class
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);
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List<String> messages = new ArrayList<>();
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ObjectMapper objectMapper = new ObjectMapper();
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if (response.getStatusCode() == HttpStatus.OK) {
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String responseBody = response.getBody();
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JsonNode jsonNode = objectMapper.readTree(responseBody);
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JsonNode result = jsonNode.get("data").get("result").get(0).get("values");
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result.iterator().forEachRemaining(e-> {
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Iterator<JsonNode> elements = e.elements();
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elements.forEachRemaining(f ->
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messages.add(f.toString())
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);
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});
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} else {
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System.out.println("Error: " + response.getStatusCodeValue());
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}
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String expected = "DemoService.log invoked!!!";
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assertTrue(messages.stream().anyMatch(e -> e.contains(expected)));
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}
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}
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