diff --git a/impl/maven-impl/pom.xml b/impl/maven-impl/pom.xml
index 6f1ea9a4cc..b7a6d445c1 100644
--- a/impl/maven-impl/pom.xml
+++ b/impl/maven-impl/pom.xml
@@ -119,6 +119,11 @@ under the License.
       <artifactId>junit-jupiter-api</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-simple</artifactId>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
diff --git a/impl/maven-impl/src/main/java/org/apache/maven/internal/impl/model/rootlocator/DefaultRootLocator.java b/impl/maven-impl/src/main/java/org/apache/maven/internal/impl/model/rootlocator/DefaultRootLocator.java
index 83850082dd..e874bd199e 100644
--- a/impl/maven-impl/src/main/java/org/apache/maven/internal/impl/model/rootlocator/DefaultRootLocator.java
+++ b/impl/maven-impl/src/main/java/org/apache/maven/internal/impl/model/rootlocator/DefaultRootLocator.java
@@ -48,7 +48,7 @@ public class DefaultRootLocator implements RootLocator {
 
     @Override
     public Path findRoot(Path basedir) {
-        requireNonNull(basedir, "basedir is null");
+        requireNonNull(basedir, getNoRootMessage());
         Path rootDirectory = basedir;
         while (rootDirectory != null && !isRootDirectory(rootDirectory)) {
             rootDirectory = rootDirectory.getParent();
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/AbstractProfileActivatorTest.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/AbstractProfileActivatorTest.java
similarity index 90%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/AbstractProfileActivatorTest.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/AbstractProfileActivatorTest.java
index acfdfa606b..ea68bb8e05 100644
--- a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/AbstractProfileActivatorTest.java
+++ b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/AbstractProfileActivatorTest.java
@@ -18,6 +18,7 @@
  */
 package org.apache.maven.internal.impl.model.profile;
 
+import java.nio.file.Path;
 import java.util.Properties;
 
 import org.apache.maven.api.model.Model;
@@ -25,6 +26,7 @@ import org.apache.maven.api.model.Profile;
 import org.apache.maven.api.services.model.ProfileActivationContext;
 import org.apache.maven.api.services.model.ProfileActivator;
 import org.apache.maven.internal.impl.model.DefaultProfileActivationContext;
+import org.apache.maven.internal.impl.model.rootlocator.DefaultRootLocator;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 
@@ -35,6 +37,12 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
  *
  */
 public abstract class AbstractProfileActivatorTest<T extends ProfileActivator> {
+    static class FakeRootLocator extends DefaultRootLocator {
+        @Override
+        protected boolean isRootDirectory(Path dir) {
+            return true;
+        }
+    }
 
     protected T activator;
 
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionParserTest.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionParserTest.java
similarity index 98%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionParserTest.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionParserTest.java
index b91460c630..b665c11485 100644
--- a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionParserTest.java
+++ b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionParserTest.java
@@ -29,9 +29,9 @@ import org.apache.maven.internal.impl.DefaultVersionParser;
 import org.apache.maven.internal.impl.model.DefaultInterpolator;
 import org.apache.maven.internal.impl.model.DefaultPathTranslator;
 import org.apache.maven.internal.impl.model.DefaultProfileActivationContext;
-import org.apache.maven.internal.impl.model.DefaultRootLocator;
 import org.apache.maven.internal.impl.model.ProfileActivationFilePathInterpolator;
 import org.apache.maven.internal.impl.model.profile.ConditionParser.ExpressionFunction;
+import org.apache.maven.internal.impl.model.rootlocator.DefaultRootLocator;
 import org.eclipse.aether.util.version.GenericVersionScheme;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -53,7 +53,9 @@ class ConditionParserTest {
         DefaultVersionParser versionParser =
                 new DefaultVersionParser(new DefaultModelVersionParser(new GenericVersionScheme()));
         ProfileActivationFilePathInterpolator interpolator = new ProfileActivationFilePathInterpolator(
-                new DefaultPathTranslator(), bd -> true, new DefaultInterpolator());
+                new DefaultPathTranslator(),
+                new AbstractProfileActivatorTest.FakeRootLocator(),
+                new DefaultInterpolator());
         DefaultRootLocator rootLocator = new DefaultRootLocator();
 
         functions = ConditionProfileActivator.registerFunctions(context, versionParser, interpolator);
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionProfileActivatorTest.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionProfileActivatorTest.java
similarity index 99%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionProfileActivatorTest.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionProfileActivatorTest.java
index c549480d48..7b1c48abed 100644
--- a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionProfileActivatorTest.java
+++ b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/ConditionProfileActivatorTest.java
@@ -33,8 +33,8 @@ import org.apache.maven.internal.impl.DefaultVersionParser;
 import org.apache.maven.internal.impl.model.DefaultInterpolator;
 import org.apache.maven.internal.impl.model.DefaultPathTranslator;
 import org.apache.maven.internal.impl.model.DefaultProfileActivationContext;
-import org.apache.maven.internal.impl.model.DefaultRootLocator;
 import org.apache.maven.internal.impl.model.ProfileActivationFilePathInterpolator;
+import org.apache.maven.internal.impl.model.rootlocator.DefaultRootLocator;
 import org.eclipse.aether.util.version.GenericVersionScheme;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Disabled;
@@ -57,7 +57,7 @@ public class ConditionProfileActivatorTest extends AbstractProfileActivatorTest<
         activator = new ConditionProfileActivator(
                 new DefaultVersionParser(new DefaultModelVersionParser(new GenericVersionScheme())),
                 new ProfileActivationFilePathInterpolator(
-                        new DefaultPathTranslator(), bd -> true, new DefaultInterpolator()),
+                        new DefaultPathTranslator(), new FakeRootLocator(), new DefaultInterpolator()),
                 new DefaultRootLocator());
 
         Path file = tempDir.resolve("file.txt");
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/FileProfileActivatorTest.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/FileProfileActivatorTest.java
similarity index 96%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/FileProfileActivatorTest.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/FileProfileActivatorTest.java
index b758607ed3..bde150d74e 100644
--- a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/FileProfileActivatorTest.java
+++ b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/FileProfileActivatorTest.java
@@ -53,7 +53,7 @@ class FileProfileActivatorTest extends AbstractProfileActivatorTest<FileProfileA
     @Override
     void setUp() throws Exception {
         activator = new FileProfileActivator(new ProfileActivationFilePathInterpolator(
-                new DefaultPathTranslator(), bd -> true, new DefaultInterpolator()));
+                new DefaultPathTranslator(), new FakeRootLocator(), new DefaultInterpolator()));
 
         context.setModel(Model.newBuilder().pomFile(tempDir.resolve("pom.xml")).build());
 
@@ -67,8 +67,8 @@ class FileProfileActivatorTest extends AbstractProfileActivatorTest<FileProfileA
     void testRootDirectoryWithNull() {
         context.setModel(Model.newInstance());
 
-        IllegalStateException e = assertThrows(
-                IllegalStateException.class,
+        NullPointerException e = assertThrows(
+                NullPointerException.class,
                 () -> assertActivation(false, newExistsProfile("${project.rootDirectory}"), context));
         assertEquals(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE, e.getMessage());
     }
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/JdkVersionProfileActivatorTest.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/JdkVersionProfileActivatorTest.java
similarity index 100%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/JdkVersionProfileActivatorTest.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/JdkVersionProfileActivatorTest.java
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/OperatingSystemProfileActivatorTest.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/OperatingSystemProfileActivatorTest.java
similarity index 100%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/OperatingSystemProfileActivatorTest.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/OperatingSystemProfileActivatorTest.java
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/PropertyProfileActivatorTest.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/PropertyProfileActivatorTest.java
similarity index 100%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/PropertyProfileActivatorTest.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/PropertyProfileActivatorTest.java
diff --git a/maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/SimpleProblemCollector.java b/impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/SimpleProblemCollector.java
similarity index 100%
rename from maven-api-impl/src/test/java/org/apache/maven/internal/impl/model/profile/SimpleProblemCollector.java
rename to impl/maven-impl/src/test/java/org/apache/maven/internal/impl/model/profile/SimpleProblemCollector.java