diff --git a/src/parser/__tests__/ArcanistBaseCommitParserTestCase.php b/src/parser/__tests__/ArcanistBaseCommitParserTestCase.php
--- a/src/parser/__tests__/ArcanistBaseCommitParserTestCase.php
+++ b/src/parser/__tests__/ArcanistBaseCommitParserTestCase.php
@@ -150,13 +150,11 @@
     // isolation for repository-oriented test cases.
 
     $root = dirname(phutil_get_library_root('arcanist'));
-    $working_copy = ArcanistWorkingCopyIdentity::newFromPath($root);
-    $configuration_manager = new ArcanistConfigurationManager();
-    $configuration_manager->setWorkingCopyIdentity($working_copy);
-    $repo = ArcanistRepositoryAPI::newAPIFromConfigurationManager(
-      $configuration_manager);
+    $working_copy = ArcanistWorkingCopy::newFromWorkingDirectory($root);
 
-    return new ArcanistBaseCommitParser($repo);
+    $api = $working_copy->newRepositoryAPI();
+
+    return new ArcanistBaseCommitParser($api);
   }
 
 }
diff --git a/src/workingcopy/ArcanistGitWorkingCopy.php b/src/workingcopy/ArcanistGitWorkingCopy.php
--- a/src/workingcopy/ArcanistGitWorkingCopy.php
+++ b/src/workingcopy/ArcanistGitWorkingCopy.php
@@ -18,5 +18,9 @@
     return new self();
   }
 
+  public function newRepositoryAPI() {
+    return new ArcanistGitAPI($this->getPath());
+  }
+
 }
 
diff --git a/src/workingcopy/ArcanistMercurialWorkingCopy.php b/src/workingcopy/ArcanistMercurialWorkingCopy.php
--- a/src/workingcopy/ArcanistMercurialWorkingCopy.php
+++ b/src/workingcopy/ArcanistMercurialWorkingCopy.php
@@ -18,5 +18,9 @@
     return new self();
   }
 
+  public function newRepositoryAPI() {
+    return new ArcanistMercurialAPI($this->getPath());
+  }
+
 }
 
diff --git a/src/workingcopy/ArcanistSubversionWorkingCopy.php b/src/workingcopy/ArcanistSubversionWorkingCopy.php
--- a/src/workingcopy/ArcanistSubversionWorkingCopy.php
+++ b/src/workingcopy/ArcanistSubversionWorkingCopy.php
@@ -70,5 +70,9 @@
     return head($candidates);
   }
 
+  public function newRepositoryAPI() {
+    return new ArcanistSubversionAPI($this->getPath());
+  }
+
 }
 
diff --git a/src/workingcopy/ArcanistWorkingCopy.php b/src/workingcopy/ArcanistWorkingCopy.php
--- a/src/workingcopy/ArcanistWorkingCopy.php
+++ b/src/workingcopy/ArcanistWorkingCopy.php
@@ -110,4 +110,6 @@
     return last($candidates);
   }
 
+  abstract public function newRepositoryAPI();
+
 }