Add junit5-jupiter-starter-maven-kotlin sample #70 #102

.travis.yml

@@ -19,6 +19,9 @@ jobs:
     - stage: starter
       name: "Jupiter Starter Sample: Maven"
       script: cd $TRAVIS_BUILD_DIR/junit5-jupiter-starter-maven && ./mvnw test
+    - stage: starter
+      name: "Jupiter Starter Sample: Maven & Kotlin"
+      script: cd $TRAVIS_BUILD_DIR/junit5-jupiter-starter-maven-kotlin && ./mvnw test
     - stage: starter
       name: "Jupiter Starter Sample: Bazel"
       script: cd $TRAVIS_BUILD_DIR/junit5-jupiter-starter-bazel && python ./bazelisk.py test //...

README.md

@@ -37,6 +37,12 @@ Groovy programming language.
 The [junit5-jupiter-starter-maven] sample demonstrates the bare minimum configuration for
 getting started with JUnit Jupiter using the Maven build system.
 
+### Jupiter on Maven using Kotlin ![badge-jdk-8] ![badge-jdk-11] ![badge-tool-maven] ![badge-junit-jupiter] ![badge-junit-vintage]
+
+The [junit5-jupiter-starter-maven-kotlin] sample demonstrates the bare minimum configuration for
+getting started with mixed JUnit Jupiter and JUnit Vintage Java project using Maven build system
+and Kotlin programming language.
+
 ### Jupiter on Bazel ![badge-jdk-8] ![badge-tool-bazel] ![badge-junit-jupiter]
 
 The [junit5-jupiter-starter-bazel] sample demonstrates the bare minimum configuration for getting started with JUnit Jupiter using the Bazel build system.
@@ -87,6 +93,7 @@ for the JUnit Platform using the Java Platform Module System.
 [junit5-jupiter-starter-gradle-groovy]: junit5-jupiter-starter-gradle-groovy
 [junit5-jupiter-starter-gradle-kotlin]: junit5-jupiter-starter-gradle-kotlin
 [junit5-jupiter-starter-maven]: junit5-jupiter-starter-maven
+[junit5-jupiter-starter-maven-kotlin]: junit5-jupiter-starter-maven-kotlin
 [junit5-jupiter-starter-bazel]: junit5-jupiter-starter-bazel
 [junit5-migration-gradle]: junit5-migration-gradle
 [junit5-migration-maven]: junit5-migration-maven

junit5-jupiter-starter-maven-kotlin/.gitignore

@@ -0,0 +1,12 @@
+target/
+/.classpath
+/.settings/
+/.project
+/bin/
+.idea
+*.iml
+*.ipr
+*.iws
+/out/
+*.log*
+.DS_Store

junit5-jupiter-starter-maven-kotlin/.mvn/wrapper/MavenWrapperDownloader.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.5";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

junit5-jupiter-starter-maven-kotlin/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.1/apache-maven-3.6.1-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.5/maven-wrapper-0.5.5.jar

junit5-jupiter-starter-maven-kotlin/README.md

@@ -0,0 +1,8 @@
+# junit5-jupiter-starter-maven-kotlin [![Build Status](https://travis-ci.org/junit-team/junit5-samples.svg?branch=master)](https://travis-ci.org/junit-team/junit5-samples)
+
+The `junit5-jupiter-starter-maven-kotlin` sample demonstrates how to execute JUnit 4 Vintage test together
+with JUnit 5 Jupiter tests by using Maven build tool in mixed java / kotlin test classes in the project:
+
+Please note that this project is uses the [Maven Wrapper](https://github.com/takari/maven-wrapper)
+3.6.1 version. This helps you ensure that already tested versions are not going to be failed if
+locally installed different maven version.