Merge branch 'use-correct-java' of https://github.com/cstroe/scalatest-maven-plugin into cstroe-use-correct-java

Author: Katrin Shechtman

src/main/java/org/scalatest/tools/maven/AbstractScalaTestMojo.java

@@ -2,31 +2,21 @@
 
 import org.apache.maven.artifact.DependencyResolutionRequiredException;
 import org.apache.maven.plugin.AbstractMojo;
-import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
 import org.apache.maven.project.MavenProject;
-import org.codehaus.plexus.util.cli.CommandLineException;
-import org.codehaus.plexus.util.cli.CommandLineTimeOutException;
-import org.codehaus.plexus.util.cli.CommandLineUtils;
-import org.codehaus.plexus.util.cli.Commandline;
-import org.codehaus.plexus.util.cli.StreamConsumer;
+import org.codehaus.plexus.util.cli.*;
 
-import static org.scalatest.tools.maven.MojoUtils.*;
-
-import java.io.*;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import java.util.ArrayList;
-import java.util.Map;
-
-import static java.util.Collections.singletonList;
-
-import java.net.MalformedURLException;
-import java.net.URLClassLoader;
-import java.net.URL;
+import java.io.File;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.*;
+
+import static java.util.Collections.singletonList;
+import static org.apache.commons.lang3.StringUtils.isEmpty;
+import static org.scalatest.tools.maven.MojoUtils.*;
 
 /**
  * Provides the base for all mojos.
@@ -270,7 +260,7 @@ private boolean runForkingOnce(String[] args) throws MojoFailureException {
 
         final Commandline cli = new Commandline();
         cli.setWorkingDirectory(project.getBasedir());
-        cli.setExecutable("java");
+        cli.setExecutable(getJvm());
 
         // Set up environment
         if (environmentVariables != null) {

src/main/java/org/scalatest/tools/maven/MojoUtils.java

@@ -3,7 +3,8 @@
 import java.util.List;
 import java.util.ArrayList;
 import java.io.File;
-import java.io.IOException;
+
+import static org.apache.commons.lang3.StringUtils.isEmpty;
 
 /**
  * Provides internal utilities for the Mojo's operations.
@@ -121,4 +122,12 @@ static String[] concat(List<String>...lists){
         }
         return c.toArray(new String[c.size()]);
     }
+
+    static String getJvm() {
+        if (!isEmpty(System.getProperty( "java.home" ))) {
+            return System.getProperty( "java.home" ) + File.separator + "bin" + File.separator + "java";
+        } else {
+            return "java";
+        }
+    }
 }

src/test/scala/org/scalatest/tools/maven/MojoUtilsTest.scala

@@ -0,0 +1,32 @@
+package org.scalatest.tools.maven
+
+import org.junit.{After, Before, Test}
+
+class MojoUtilsTest {
+  private var savedJavaHome: Option[String] = _
+
+  @Before
+  def save(): Unit = {
+    savedJavaHome = Option(System.getProperty("java.home"))
+  }
+
+  @After
+  def restore(): Unit = {
+    savedJavaHome match {
+      case None => System.clearProperty("java.home")
+      case Some(value) => System.setProperty("java.home", value)
+    }
+  }
+
+  @Test
+  def getJvmHappyPath(): Unit = {
+    System.setProperty("java.home", "/test/jvm")
+    assert(MojoUtils.getJvm == "/test/jvm/bin/java")
+  }
+
+  @Test
+  def getJvmWithoutJavaHome(): Unit = {
+    System.clearProperty("java.home")
+    assert(MojoUtils.getJvm == "java")
+  }
+}