diff --git a/src/applications/base/PhabricatorApplication.php b/src/applications/base/PhabricatorApplication.php
index f8e1ff8408..6dbcb37662 100644
--- a/src/applications/base/PhabricatorApplication.php
+++ b/src/applications/base/PhabricatorApplication.php
@@ -255,47 +255,40 @@ abstract class PhabricatorApplication {
   }
 
   public static function getAllApplications() {
-    $classes = id(new PhutilSymbolLoader())
-            ->setAncestorClass(__CLASS__)
-            ->setConcreteOnly(true)
-            ->selectAndLoadSymbols();
-
-    $apps = array();
-
-    foreach ($classes as $class) {
-      $app = newv($class['name'], array());
-      $apps[] = $app;
-    }
-
-    // Reorder the applications into "application order". Notably, this ensures
-    // their event handlers register in application order.
-    $apps = msort($apps, 'getApplicationOrder');
-    $apps = mgroup($apps, 'getApplicationGroup');
-    $apps = array_select_keys($apps, self::getApplicationGroups()) + $apps;
-    $apps = array_mergev($apps);
-
-    return $apps;
-  }
-
-  public static function getAllInstalledApplications() {
     static $applications;
 
-    if (empty($applications)) {
-      $all_applications = self::getAllApplications();
-      $apps = array();
-      foreach ($all_applications as $app) {
-        if (!$app->isInstalled()) {
-          continue;
-        }
+    if ($applications === null) {
+      $apps = id(new PhutilSymbolLoader())
+        ->setAncestorClass(__CLASS__)
+        ->loadObjects();
 
-        $apps[] = $app;
-      }
+      // Reorder the applications into "application order". Notably, this
+      // ensures their event handlers register in application order.
+      $apps = msort($apps, 'getApplicationOrder');
+      $apps = mgroup($apps, 'getApplicationGroup');
+      $apps = array_select_keys($apps, self::getApplicationGroups()) + $apps;
+      $apps = array_mergev($apps);
 
       $applications = $apps;
     }
 
+
     return $applications;
   }
 
+  public static function getAllInstalledApplications() {
+    $all_applications = self::getAllApplications();
+    $apps = array();
+    foreach ($all_applications as $app) {
+      if (!$app->isInstalled()) {
+        continue;
+      }
+
+      $apps[] = $app;
+    }
+
+    return $apps;
+  }
+
 }
 
diff --git a/src/infrastructure/__tests__/PhabricatorInfrastructureTestCase.php b/src/infrastructure/__tests__/PhabricatorInfrastructureTestCase.php
index 60c4695798..70ba05bb4b 100644
--- a/src/infrastructure/__tests__/PhabricatorInfrastructureTestCase.php
+++ b/src/infrastructure/__tests__/PhabricatorInfrastructureTestCase.php
@@ -5,14 +5,23 @@ final class PhabricatorInfrastructureTestCase
 
   /**
    * This is more of an acceptance test case instead of a unittest. It verifies
-   * that all symbols can be loaded correctly. It can catch problem like missing
-   * methods in descendants of abstract base classes.
+   * that all symbols can be loaded correctly. It can catch problems like
+   * missing methods in descendants of abstract base classes.
    */
   public function testEverythingImplemented() {
-    // Note that we don't have a try catch block around the following because,
-    // when it fails, it will cause a HPHP or PHP fatal which won't be caught
-    // by try catch.
-    $every_class = id(new PhutilSymbolLoader())->selectAndLoadSymbols();
+    id(new PhutilSymbolLoader())->selectAndLoadSymbols();
   }
+
+  public function testApplicationsInstalled() {
+    $all = PhabricatorApplication::getAllApplications();
+    $installed = PhabricatorApplication::getAllInstalledApplications();
+
+    $this->assertEqual(
+      count($all),
+      count($installed),
+      'In test cases, all applications should default to installed.');
+  }
+
+
 }
 
diff --git a/src/infrastructure/testing/PhabricatorTestCase.php b/src/infrastructure/testing/PhabricatorTestCase.php
index 12f18567bc..c2c6d72f08 100644
--- a/src/infrastructure/testing/PhabricatorTestCase.php
+++ b/src/infrastructure/testing/PhabricatorTestCase.php
@@ -87,6 +87,15 @@ abstract class PhabricatorTestCase extends ArcanistPhutilTestCase {
     }
 
     $this->env = PhabricatorEnv::beginScopedEnv();
+
+    // NOTE: While running unit tests, we act as though all applications are
+    // installed, regardless of the install's configuration. Tests which need
+    // to uninstall applications are responsible for adjusting state themselves
+    // (such tests are exceedingly rare).
+
+    $this->env->overrideEnvConfig(
+      'phabricator.uninstalled-applications',
+      array());
   }
 
   protected function didRunTests() {