diff --git a/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php b/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php
--- a/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php
+++ b/src/unit/engine/ArcanistConfigurationDrivenUnitTestEngine.php
@@ -108,6 +108,7 @@
         $test_engine->setPaths($paths);
       }
 
+      $test_engine->setConfigurationManager($this->getConfigurationManager());
       $built_test_engines[] = $test_engine;
     }
 
diff --git a/src/unit/engine/PhpunitTestEngine.php b/src/unit/engine/PhpunitTestEngine.php
--- a/src/unit/engine/PhpunitTestEngine.php
+++ b/src/unit/engine/PhpunitTestEngine.php
@@ -10,6 +10,10 @@
   private $affectedTests;
   private $projectRoot;
 
+  public function getEngineConfigurationName() {
+    return 'phpunit';
+  }
+
   public function run() {
     $this->projectRoot = $this->getWorkingCopy()->getProjectRoot();
     $this->affectedTests = array();
diff --git a/src/unit/engine/__tests__/PhpunitTestEngineTestCase.php b/src/unit/engine/__tests__/PhpunitTestEngineTestCase.php
--- a/src/unit/engine/__tests__/PhpunitTestEngineTestCase.php
+++ b/src/unit/engine/__tests__/PhpunitTestEngineTestCase.php
@@ -5,6 +5,11 @@
  */
 final class PhpunitTestEngineTestCase extends PhutilTestCase {
 
+  public function testGetEngineConfigurationName() {
+    $engine = new PhpunitTestEngine();
+    $this->assertEqual('phpunit', $engine->getEngineConfigurationName());
+  }
+
   public function testSearchLocations() {
     $path = '/path/to/some/file/X.php';