I am writing a test for a REST Controller which returns nothing but a String.

package com.sample.testing;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @GetMapping("/")
    public String index() {
        return "Greetings from Spring Boot!";
    }

}

This is my test class for the above controller,

import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.web.servlet.MockMvc;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@SpringBootTest
@AutoConfigureMockMvc
public class HelloControllerTest {

    @Autowired
    private MockMvc mockMvc;

    @Test
   public void shouldReturnDefaultMessage() throws Exception {
        mockMvc.perform(get("/")).andDo(print()).andExpect(status().isOk());
    }

}

This is what I get in console when I individually run test for the `HelloControllerTest class.

Execution failed for task ':test'.
> No tests found for given includes: [com.sample.testing.HelloControllerTest](--tests filter)
 `

My build gradle file,

plugins {
    java
    id("org.springframework.boot") version "3.2.9"
    id("io.spring.dependency-management") version "1.1.6"
    id("org.graalvm.buildtools.native") version "0.9.28"
    id("org.asciidoctor.jvm.convert") version "3.3.2"
}

group = "com.sample"
version = "0.0.1-SNAPSHOT"

java {
    toolchain {
        languageVersion = JavaLanguageVersion.of(17)
    }
}

configurations {
    compileOnly {
        extendsFrom(configurations.annotationProcessor.get())
    }
}

repositories {
    mavenCentral()
}

extra["snippetsDir"] = file("build/generated-snippets")

dependencies {
    implementation("org.springframework.boot:spring-boot-starter-data-rest")
    implementation("org.springframework.boot:spring-boot-starter-web")
    implementation("org.springframework.boot:spring-boot-starter-web-services")
    compileOnly("org.projectlombok:lombok")
    developmentOnly("org.springframework.boot:spring-boot-devtools")
    annotationProcessor("org.projectlombok:lombok")
    testImplementation("org.springframework.boot:spring-boot-starter-test")
    testImplementation("org.springframework.boot:spring-boot-testcontainers")
    testImplementation("org.springframework.restdocs:spring-restdocs-mockmvc")
    testImplementation("org.testcontainers:junit-jupiter")
    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
}

tasks.withType<Test> {
    useJUnitPlatform()
}

tasks.test {
    outputs.dir(project.extra["snippetsDir"]!!)
}

tasks.asciidoctor {
    inputs.dir(project.extra["snippetsDir"]!!)
    dependsOn(tasks.test)
}