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Merged
rashidi merged 3 commits into from
Sep 9, 2026
Merged

Replace TestRestTemplate with RestClient #398

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68d9aa0
Replace TestRestTemplate with RestClient
rashidi Sep 9, 2026
e5e8501
Replace TestRestTemplate with RestTestClient
rashidi Sep 9, 2026
b3ce920
Replace TestRestTemplate with RestTestClient
rashidi Sep 9, 2026
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20 changes: 9 additions & 11 deletions web-virtual-threads/README.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,6 @@ We include standard Spring Web, Spring Data JPA, alongside PostgreSQL and Testco
dependencies {
implementation("org.springframework.boot:spring-boot-starter-data-jpa")
implementation("org.springframework.boot:spring-boot-starter-webmvc")
implementation("org.springframework.boot:spring-boot-restclient")
runtimeOnly("org.postgresql:postgresql")
testImplementation("org.springframework.boot:spring-boot-starter-data-jpa-test")
testImplementation("org.springframework.boot:spring-boot-resttestclient")
Expand All @@ -49,7 +48,6 @@ Configure the application to enable virtual threads in `src/main/resources/appli
spring.application.name=web-virtual-threads

spring.threads.virtual.enabled=true
spring.jpa.hibernate.ddl-auto=create-drop
----

Setting `spring.threads.virtual.enabled=true` instructs Tomcat (or your chosen embedded web server) to use an `Executor` backed by virtual threads for handling HTTP requests.
Expand Down Expand Up @@ -161,27 +159,27 @@ public class TestcontainersConfiguration {

[source,java]
----
@AutoConfigureTestRestTemplate
@AutoConfigureRestTestClient
@Import(TestcontainersConfiguration.class)
@SpringBootTest(properties = "spring.jpa.hibernate.ddl-auto=create-drop", webEnvironment = RANDOM_PORT)
class UserControllerTests {

@Autowired
private TestRestTemplate restClient;
private RestTestClient restClient;

@Autowired
private UserRepository em;
private UserRepository users;

@Test
@DisplayName("Should process web request and database query on a Virtual Thread")
void virtualThreadEnabled() {
em.save(new User("Rashidi"));
users.save(new User("Rashidi"));

var response = restClient.getForEntity("/thread-info", Map.class);

assertThat(response)
.extracting("statusCode", "body.isVirtual", "body.userCount")
.containsOnly(OK, true, 1);
restClient.get().uri("/thread-info").exchange()
.expectStatus().isOk()
.expectBody()
.jsonPath("$.isVirtual").isEqualTo(true)
.jsonPath("$.userCount").isEqualTo(1);
}

}
Expand Down
1 change: 0 additions & 1 deletion web-virtual-threads/build.gradle.kts
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Expand Up @@ -20,7 +20,6 @@ repositories {
dependencies {
implementation("org.springframework.boot:spring-boot-starter-data-jpa")
implementation("org.springframework.boot:spring-boot-starter-webmvc")
implementation("org.springframework.boot:spring-boot-restclient")
runtimeOnly("org.postgresql:postgresql")
testImplementation("org.springframework.boot:spring-boot-starter-data-jpa-test")
testImplementation("org.springframework.boot:spring-boot-resttestclient")
Expand Down
26 changes: 11 additions & 15 deletions ...l-threads/src/test/java/zin/rashidi/boot/web/virtualthreads/user/UserControllerTests.java
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Expand Up @@ -3,39 +3,35 @@
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.resttestclient.TestRestTemplate;
import org.springframework.boot.resttestclient.autoconfigure.AutoConfigureTestRestTemplate;
import org.springframework.boot.resttestclient.autoconfigure.AutoConfigureRestTestClient;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.annotation.Import;
import org.springframework.test.web.servlet.client.RestTestClient;
import zin.rashidi.boot.web.virtualthreads.TestcontainersConfiguration;

import java.util.Map;

import static org.assertj.core.api.Assertions.assertThat;
import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.RANDOM_PORT;
import static org.springframework.http.HttpStatus.OK;

@AutoConfigureTestRestTemplate
@AutoConfigureRestTestClient
@Import(TestcontainersConfiguration.class)
@SpringBootTest(properties = "spring.jpa.hibernate.ddl-auto=create-drop", webEnvironment = RANDOM_PORT)
class UserControllerTests {

@Autowired
private TestRestTemplate restClient;
private RestTestClient restClient;

@Autowired
private UserRepository em;
private UserRepository users;

@Test
@DisplayName("Should process web request and database query on a Virtual Thread")
void virtualThreadEnabled() {
em.save(new User("Rashidi"));

var response = restClient.getForEntity("/thread-info", Map.class);
users.save(new User("Rashidi"));

assertThat(response)
.extracting("statusCode", "body.isVirtual", "body.userCount")
.containsOnly(OK, true, 1);
restClient.get().uri("/thread-info").exchange()
.expectStatus().isOk()
.expectBody()
.jsonPath("$.isVirtual").isEqualTo(true)
.jsonPath("$.userCount").isEqualTo(1);
}

}
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