diff --git a/approvaltests-tests/src/test/java/org/approvaltests/CheckedExceptionsTest.java b/approvaltests-tests/src/test/java/org/approvaltests/CheckedExceptionsTest.java
index 433cf49f1..31cf0d29b 100644
--- a/approvaltests-tests/src/test/java/org/approvaltests/CheckedExceptionsTest.java
+++ b/approvaltests-tests/src/test/java/org/approvaltests/CheckedExceptionsTest.java
@@ -1,5 +1,6 @@
 package org.approvaltests;
 
+import com.spun.util.ClassUtils;
 import org.junit.jupiter.api.Test;
 import org.lambda.query.Query;
 import org.lambda.query.Queryable;
@@ -27,7 +28,7 @@ private List<Method> getMethodsWithCheckedExceptions(Class<?> aClass)
   }
   private Queryable<Class<?>> getAllClasses()
   {
-    return getClasses("..", p -> p.contains("main"),
+    return getClasses(ClassUtils.getProjectRootPath() + "/..", p -> p.contains("main"),
         p1 -> p1.contains(".approvaltests.src.") || p1.contains(".approvaltests-util."));
   }
 }
diff --git a/approvaltests-tests/src/test/java/org/approvaltests/ParserUtilities.java b/approvaltests-tests/src/test/java/org/approvaltests/ParserUtilities.java
index b69162033..6d48a8709 100644
--- a/approvaltests-tests/src/test/java/org/approvaltests/ParserUtilities.java
+++ b/approvaltests-tests/src/test/java/org/approvaltests/ParserUtilities.java
@@ -9,6 +9,7 @@
 import com.github.javaparser.ast.type.Type;
 import com.github.javaparser.ast.type.TypeParameter;
 import com.github.javaparser.utils.SourceRoot;
+import com.spun.util.ClassUtils;
 import com.spun.util.FormattedException;
 import org.lambda.query.Query;
 
@@ -22,8 +23,8 @@ public class ParserUtilities
   public static final List<String> SOURCE_PATHS = new ArrayList<>();
   static
   {
-    SOURCE_PATHS.add("src/main/java");
-    SOURCE_PATHS.add("src/test/java");
+    SOURCE_PATHS.add(ClassUtils.getProjectRootPath() + "/src/main/java");
+    SOURCE_PATHS.add(ClassUtils.getProjectRootPath() + "/src/test/java");
   }
   public static Range getLineNumbersForMethod(Method method)
   {
@@ -71,6 +72,7 @@ public static CompilationUnit getCompilationUnit(Method method)
     ParseProblemException parseException = null;
     for (String sourceRootPath : SOURCE_PATHS)
     {
+      System.out.println("Trying to parse from: " + sourceRootPath);
       SourceRoot sourceRoot = new SourceRoot(Paths.get(sourceRootPath));
       try
       {
diff --git a/approvaltests-tests/src/test/java/org/approvaltests/ParsingFilesTest.java b/approvaltests-tests/src/test/java/org/approvaltests/ParsingFilesTest.java
index 0537225ca..f54d3b685 100644
--- a/approvaltests-tests/src/test/java/org/approvaltests/ParsingFilesTest.java
+++ b/approvaltests-tests/src/test/java/org/approvaltests/ParsingFilesTest.java
@@ -1,6 +1,7 @@
 package org.approvaltests;
 
 import com.github.javaparser.Range;
+import com.spun.util.ClassUtils;
 import org.approvaltests.core.Options;
 import org.junit.jupiter.api.Test;
 
@@ -10,7 +11,7 @@ public class ParsingFilesTest
 {
   public static void addApprovalTestPath()
   {
-    ParserUtilities.SOURCE_PATHS.add("../approvaltests/src/main/java");
+    ParserUtilities.SOURCE_PATHS.add(ClassUtils.getProjectRootPath() + "/../approvaltests/src/main/java");
   }
   @Test
   public void getLineNumberOfThisMethod() throws Exception
@@ -23,4 +24,4 @@ public void getLineNumberOfThisMethod() throws Exception
     Range r = ParserUtilities.getLineNumbersForMethod(method);
     Approvals.verify(r, new Options().inline(expected));
   }
-}
\ No newline at end of file
+}
diff --git a/approvaltests-tests/src/test/java/org/approvaltests/namer/NamerSamplesTest.java b/approvaltests-tests/src/test/java/org/approvaltests/namer/NamerSamplesTest.java
index 31b08489b..cebdd1912 100644
--- a/approvaltests-tests/src/test/java/org/approvaltests/namer/NamerSamplesTest.java
+++ b/approvaltests-tests/src/test/java/org/approvaltests/namer/NamerSamplesTest.java
@@ -1,5 +1,6 @@
 package org.approvaltests.namer;
 
+import com.spun.util.ClassUtils;
 import com.spun.util.tests.TestUtils;
 import com.spun.util.tests.TestUtils.SourceDirectoryRestorer;
 import org.approvaltests.Approvals;
@@ -19,7 +20,8 @@ void useAlternativeSourceFileFinder()
       @Override
       public File call(Class clazz, String fileName)
       {
-        return new File("src/test/java/" + clazz.getPackage().getName().replaceAll("\\.", "/"));
+        return new File(ClassUtils.getProjectRootPath() + "/src/test/java/"
+            + clazz.getPackage().getName().replaceAll("\\.", "/"));
       }
     };
     // end-snippet
diff --git a/approvaltests-util/src/main/java/com/spun/util/ClassUtils.java b/approvaltests-util/src/main/java/com/spun/util/ClassUtils.java
index 82e26fb61..e888d688c 100644
--- a/approvaltests-util/src/main/java/com/spun/util/ClassUtils.java
+++ b/approvaltests-util/src/main/java/com/spun/util/ClassUtils.java
@@ -17,6 +17,7 @@
 
 public class ClassUtils
 {
+  public static final String APPROVALTESTS_PROJECT_DIRECTORY = "APPROVALTESTS_PROJECT_DIRECTORY";
   public static String getClassName(Class<?> clazz)
   {
     String name = clazz.getName();
@@ -98,11 +99,23 @@ public static File getSourceDirectory(Class<?> clazz, Function1<String, String>
     final String name = clazz.getName();
     String[] split = name.split("\\.");
     split[split.length - 1] = createLastFileName.call(split[split.length - 1]);
-    File found = find(new File("."), Arrays.asList(split));
+    String baseSourcePath = getProjectRootPath();
+    File found = find(new File(baseSourcePath), Arrays.asList(split));
     if (found == null)
     { throw new FormattedException("Didn't find %s under %s", name, FileUtils.getCurrentDirectory()); }
     return found.getParentFile();
   }
+  /**
+   * This returns the {@link com.spun.util.ClassUtils#APPROVALTESTS_PROJECT_DIRECTORY APPROVALTESTS_PROJECT_DIRECTORY} system property if it is set, otherwise it returns the working directory.
+   */
+  public static String getProjectRootPath()
+  {
+    if (System.getProperties().containsKey(APPROVALTESTS_PROJECT_DIRECTORY))
+    { return System.getProperty(APPROVALTESTS_PROJECT_DIRECTORY); }
+    if (System.getenv().containsKey(APPROVALTESTS_PROJECT_DIRECTORY))
+    { return System.getenv(APPROVALTESTS_PROJECT_DIRECTORY); }
+    return ".";
+  }
   public static File getSourceDirectory(Class<?> clazz, final String fileName)
   {
     return getSourceDirectory(clazz, __ -> fileName);
diff --git a/pom.xml b/pom.xml
index 41012e635..7448028b8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -103,6 +103,11 @@
                 <version>3.5.2</version>
                 <configuration>
                     <argLine>-Duser.language=en -Duser.region=US</argLine>
+                    <parallel>methods</parallel>
+                    <workingDirectory>target/fork_dir_${surefire.forkNumber}</workingDirectory>
+                    <systemPropertyVariables>
+                        <APPROVALTESTS_PROJECT_DIRECTORY>${project.basedir}</APPROVALTESTS_PROJECT_DIRECTORY>
+                    </systemPropertyVariables>
                 </configuration>
             </plugin>
             <plugin>