First build runs ok (with junit and log4j for the plugin)

Author: EtienneSF

.gitignore

@@ -8,3 +8,4 @@ build
 .settings/
 .classpath
 .project
+bin/

build.gradle

@@ -25,5 +25,12 @@ dependencies {
 	implementation 'com.google.guava:guava:27.0.1-jre'
 
 	// Use JUnit test framework
-	testImplementation 'junit:junit:4.12'
+	testImplementation("org.junit.jupiter:junit-jupiter-api:5.5.0")
+	testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.5.0")
+}
+
+test {
+	// We're using JUnit 5 
+	useJUnitPlatform()
+	systemProperty 'java.util.logging.manager', 'org.apache.logging.log4j.jul.LogManager'
 }

graphql-gradle-plugin/build.gradle

@@ -6,32 +6,35 @@
  * User Manual available at https://docs.gradle.org/5.4/userguide/java_library_plugin.html
  */
 
+ 
 plugins {
     // Apply the java-library plugin to add support for Java Library
     id 'java-library'
 }
 
+repositories {
+	//  mavenLocal is used to get snapshot of the com.graphql-java-generator maven plugin, and relatives dependencies
+	mavenLocal()
+	mavenCentral()
+}
+
 dependencies {
 	// Let's reuse the logic already implemented in our maven plugin
     implementation 'com.graphql-java-generator:graphql-maven-plugin-project:1.0.0-RC1'
-
-    // Use JUnit test framework
-    testImplementation 'junit:junit:4.12'
+	
+	// Logging with log4j2
+	compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.12.0'
+	compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.12.0'
+	
+	// Use JUnit test framework
+	testImplementation("org.junit.jupiter:junit-jupiter-api:5.5.0")
+	testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.5.0")
+	testRuntimeOnly("org.apache.logging.log4j:log4j-jul:2.12.0")
+	
 }
 
-// A sample plugin, just to try
-
-
-class GreetingPlugin implements Plugin<Project> {
-	void apply(Project project) {
-		project.task('hello') {
-			doLast {
-				println 'Hello from the ' + project.name
-			}
-		}
-	}
+test {
+	// We're using JUnit 5
+	useJUnitPlatform()
+	systemProperty 'java.util.logging.manager', 'org.apache.logging.log4j.jul.LogManager'
 }
-
-// Apply the plugin
-apply plugin: GreetingPlugin
-

graphql-gradle-plugin/src/main/java/graphql/graphqlplugin/GraphqlGradlePlugin.java

@@ -4,9 +4,13 @@
 package graphql.graphqlplugin;
 
 /**
- * @author VJ2053
+ * @author EtienneSF
  *
  */
 public class GraphqlGradlePlugin {
 
+	int plus(int a, int b) {
+		return a + b;
+	};
+
 }

graphql-gradle-plugin/src/test/java/graphql/graphqlplugin/GraphqlGradlePluginTest.java

@@ -0,0 +1,32 @@
+/**
+ * 
+ */
+package graphql.graphqlplugin;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author EtienneSF
+ *
+ */
+class GraphqlGradlePluginTest {
+
+	GraphqlGradlePlugin graphqlGradlePlugin;
+
+	@BeforeEach
+	public void setup() {
+		graphqlGradlePlugin = new GraphqlGradlePlugin();
+	}
+
+	/**
+	 * Test method for {@link graphql.graphqlplugin.GraphqlGradlePlugin#plus(int, int)}.
+	 */
+	@Test
+	void testPlus() {
+		assertEquals(8, graphqlGradlePlugin.plus(3, 5));
+	}
+
+}

graphql-gradle-plugin/src/test/java/graphql/graphqlplugin/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * 
+ * @author EtienneSF
+ *
+ */
+package graphql.graphqlplugin;

graphql-gradle-plugin/src/test/resources/log4j2-test.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<Configuration status="WARN">
+
+	<Appenders>
+		<Console name="Console" target="SYSTEM_OUT">
+			<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
+		</Console>
+		<File name="File" fileName="target/JUnit-tests.log4j.log">
+			<PatternLayout>
+				<pattern>%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n</pattern>
+			</PatternLayout>
+		</File>
+	</Appenders>
+
+	<Loggers>
+		<Logger name="graphql.gradleplugin" level="debug" />
+		<Root level="info">
+			<AppenderRef ref="Console" />
+			<AppenderRef ref="File" />
+		</Root>
+	</Loggers>
+
+</Configuration>