Add a unit test to check src/__phutil_library_map__.php.

Summary: See D9557. Add a unit test to ensure that `src/__phutil_library_map__.php` is up-to-date.

Test Plan: Ran `arc unit`.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9558

src/__phutil_library_map__.php

@@ -88,6 +88,7 @@ phutil_register_library_map(array(
     'ArcanistHgProxyServer' => 'hgdaemon/ArcanistHgProxyServer.php',
     'ArcanistHgServerChannel' => 'hgdaemon/ArcanistHgServerChannel.php',
     'ArcanistHookAPI' => 'repository/hookapi/ArcanistHookAPI.php',
+    'ArcanistInfrastructureTestCase' => '__tests__/ArcanistInfrastructureTestCase.php',
     'ArcanistInlinesWorkflow' => 'workflow/ArcanistInlinesWorkflow.php',
     'ArcanistInstallCertificateWorkflow' => 'workflow/ArcanistInstallCertificateWorkflow.php',
     'ArcanistJSHintLinter' => 'lint/linter/ArcanistJSHintLinter.php',
@@ -265,6 +266,7 @@ phutil_register_library_map(array(
     'ArcanistHelpWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistHgClientChannel' => 'PhutilProtocolChannel',
     'ArcanistHgServerChannel' => 'PhutilProtocolChannel',
+    'ArcanistInfrastructureTestCase' => 'ArcanistTestCase',
     'ArcanistInlinesWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistInstallCertificateWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistJSHintLinter' => 'ArcanistExternalLinter',

src/__tests__/ArcanistInfrastructureTestCase.php

@@ -0,0 +1,13 @@
+<?php
+
+final class ArcanistInfrastructureTestCase extends ArcanistTestCase {
+  /**
+   * This is more of an acceptance test case instead of a unit test. It verifies
+   * that all symbols can be loaded correctly. It can catch problems like
+   * missing methods in descendants of abstract base classes.
+   */
+  public function testEverythingImplemented() {
+    id(new PhutilSymbolLoader())->selectAndLoadSymbols();
+    $this->assertTrue(true);
+  }
+}