test: fix path problem (#15)

* fix path problem

* fix path problem

Author: serenacofano

maven-plugin/src/test/java/io/github/chains_project/classport/plugin/EmbeddingMojoTest.java

@@ -158,8 +158,10 @@ private int getExitCodeRunMavenPlugin() throws MavenInvocationException, IOExcep
         request.setBatchMode(true); 
 
         Invoker invoker = new DefaultInvoker();
-        
-
+        String os = System.getProperty("os.name");
+        if (os.contains("Mac")) {
+            invoker.setMavenHome(new File(System.getenv("M2_HOME")));
+        }
         InvocationResult result = invoker.execute(request);
         return result.getExitCode();