Add TestNG sample

testng/build.gradle

@@ -0,0 +1,53 @@
+plugins {
+	id "java"
+	id "org.asciidoctor.jvm.convert" version "3.3.2"
+	id "org.springframework.boot" version "3.0.0-M4"
+}
+
+apply plugin: 'io.spring.dependency-management'
+
+repositories {
+	maven { url 'https://repo.spring.io/milestone' }
+	mavenCentral()
+}
+
+group = 'com.example'
+
+sourceCompatibility = 17
+targetCompatibility = 17
+
+ext {
+	snippetsDir = file('build/generated-snippets')
+}
+
+configurations {
+	asciidoctorExtensions
+}
+
+dependencies {
+	asciidoctorExtensions 'org.springframework.restdocs:spring-restdocs-asciidoctor'
+
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.restdocs:spring-restdocs-mockmvc'
+	testImplementation 'org.testng:testng:7.6.0'
+}
+
+test {
+	useTestNG()
+	outputs.dir snippetsDir
+}
+
+asciidoctor {
+	configurations "asciidoctorExtensions"
+	inputs.dir snippetsDir
+	dependsOn test
+}
+
+bootJar {
+	dependsOn asciidoctor
+	from ("${asciidoctor.outputDir}/html5") {
+		into 'static/docs'
+	}
+}