diff --git a/tests/org.pitest.pitclipse.runner.tests/org.pitest.pitclipse.runner.tests.launch b/tests/org.pitest.pitclipse.runner.tests/org.pitest.pitclipse.runner.tests.launch
index f763eb53..a725531e 100644
--- a/tests/org.pitest.pitclipse.runner.tests/org.pitest.pitclipse.runner.tests.launch
+++ b/tests/org.pitest.pitclipse.runner.tests/org.pitest.pitclipse.runner.tests.launch
@@ -14,6 +14,7 @@
     <booleanAttribute key="default" value="true"/>
     <booleanAttribute key="includeOptional" value="true"/>
     <stringAttribute key="location" value="${workspace_loc}/../junit-workspace"/>
+    <booleanAttribute key="org.eclipse.debug.core.ATTR_FORCE_SYSTEM_CONSOLE_ENCODING" value="false"/>
     <listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS">
         <listEntry value="/org.pitest.pitclipse.runner.tests"/>
     </listAttribute>
@@ -24,7 +25,9 @@
     <booleanAttribute key="org.eclipse.jdt.junit.KEEPRUNNING_ATTR" value="false"/>
     <stringAttribute key="org.eclipse.jdt.junit.TESTNAME" value=""/>
     <stringAttribute key="org.eclipse.jdt.junit.TEST_KIND" value="org.eclipse.jdt.junit.loader.junit4"/>
-    <stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11"/>
+    <booleanAttribute key="org.eclipse.jdt.launching.ATTR_ATTR_USE_ARGFILE" value="false"/>
+    <booleanAttribute key="org.eclipse.jdt.launching.ATTR_SHOW_CODEDETAILS_IN_EXCEPTION_MESSAGES" value="true"/>
+    <stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17"/>
     <stringAttribute key="org.eclipse.jdt.launching.MAIN_TYPE" value=""/>
     <stringAttribute key="org.eclipse.jdt.launching.PROGRAM_ARGUMENTS" value="-os ${target.os} -ws ${target.ws} -arch ${target.arch} -nl ${target.nl} -consoleLog"/>
     <stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="org.pitest.pitclipse.runner.tests"/>
diff --git a/tests/org.pitest.pitclipse.runner.tests/src/org/pitest/pitclipse/runner/io/ObjectStreamSocketTest.java b/tests/org.pitest.pitclipse.runner.tests/src/org/pitest/pitclipse/runner/io/ObjectStreamSocketTest.java
index 74c56d44..4e69538e 100644
--- a/tests/org.pitest.pitclipse.runner.tests/src/org/pitest/pitclipse/runner/io/ObjectStreamSocketTest.java
+++ b/tests/org.pitest.pitclipse.runner.tests/src/org/pitest/pitclipse/runner/io/ObjectStreamSocketTest.java
@@ -16,22 +16,6 @@
 
 package org.pitest.pitclipse.runner.io;
 
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mock;
-import org.mockito.junit.MockitoJUnitRunner;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.io.OutputStream;
-import java.io.Serializable;
-import java.net.Socket;
-
 import static org.apache.commons.lang3.builder.EqualsBuilder.reflectionEquals;
 import static org.apache.commons.lang3.builder.HashCodeBuilder.reflectionHashCode;
 import static org.hamcrest.CoreMatchers.equalTo;
@@ -43,10 +27,25 @@
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 import static org.mockito.Mockito.doThrow;
-import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.OutputStream;
+import java.io.Serializable;
+import java.net.Socket;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
 @RunWith(MockitoJUnitRunner.class)
 public class ObjectStreamSocketTest {
 
@@ -121,7 +120,7 @@ public void makeThrowsException() throws IOException {
 
     @Test
     public void readThrowsException() throws IOException, ClassNotFoundException {
-        InputStream inputStream = spy(new ByteArrayInputStream(asBytes(expectedObject)));
+        InputStream inputStream = new ByteArrayInputStream(asBytes(expectedObject));
         OutputStream outputStream = new ByteArrayOutputStream();
         when(underlyingSocket.getInputStream()).thenReturn(inputStream);
         when(underlyingSocket.getOutputStream()).thenReturn(outputStream);
@@ -138,7 +137,7 @@ public void readThrowsException() throws IOException, ClassNotFoundException {
 
     @Test
     public void writeThrowsException() throws IOException, ClassNotFoundException {
-        InputStream inputStream = spy(new ByteArrayInputStream(asBytes(expectedObject)));
+        InputStream inputStream = new ByteArrayInputStream(asBytes(expectedObject));
         OutputStream outputStream = new ByteArrayOutputStream();
         when(underlyingSocket.getInputStream()).thenReturn(inputStream);
         when(underlyingSocket.getOutputStream()).thenReturn(outputStream);