diff --git a/src/Site/Test/LibActivitypub.php b/src/Site/Test/LibActivitypub.php
new file mode 100644
index 0000000..255cc7c
--- /dev/null
+++ b/src/Site/Test/LibActivitypub.php
@@ -0,0 +1,79 @@
+<?php
+namespace Site\Test;
+
+require_once __DIR__.'/../../../autoload.php';
+
+use Site\Lib\Tester;
+use Site\Lib\Activitypub;
+use Site\Controller\BlogPost;
+
+if (ACTIVITYPUB_ENABLED) {
+  $test = new Tester([
+    'colorOutput' => true,
+    'verboseOutput' => true
+  ]);
+
+  /*
+  postInbox(array $activity): void
+  update(): string
+  sendActorUpdate(array $params): void
+  */
+
+  $test->describe('ActivityPub情報の受け取り', function($test): void {
+    $test->it('このインスタンスのユーザーを受け取れるはず', function($test): void {
+      $ap = new Activitypub();
+      $res = $ap->getActor();
+      $test->assertNotNull($res);
+      $json = json_decode($res, true);
+
+      $expect = 'Person';
+      $test->assertEquals($json['type'], $expect);
+
+      $expect = 'http://127.0.0.1:8000';
+      $test->assertEquals($json['url'], $expect);
+
+      $expect = 'http://127.0.0.1:8000/ap/actor';
+      $test->assertEquals($json['id'], $expect);
+
+      $expect = 'http://127.0.0.1:8000/ap/inbox';
+      $test->assertEquals($json['inbox'], $expect);
+
+      $expect = 'http://127.0.0.1:8000/ap/outbox';
+      $test->assertEquals($json['outbox'], $expect);
+
+      $expect = 'http://127.0.0.1:8000/ap/followers';
+      $test->assertEquals($json['followers'], $expect);
+
+      $expect = 'http://127.0.0.1:8000/ap/following';
+      $test->assertEquals($json['following'], $expect);
+    });
+    
+    $test->it('アクティビティを受け取れるはず', function($test): void {
+      $blog = new BlogPost;
+      $posts = $blog->getPosts('/blog/');
+      $ap = new Activitypub($posts);
+      $res = $ap->getActivity('a8c04518-4181-4ec6-9ef0-3f88f23b84b6'); // /blog/feature-test
+      $test->assertNotNull($res);
+      $json = json_decode($res, true);
+
+      $expect = 'Create';
+      $test->assertEquals($json['type'], $expect);
+
+      $expect = '【マークダウン】関数';
+      $test->assertEquals($json['object']['name'], $expect);
+
+      $expect = 'https://www.w3.org/ns/activitystreams#Public';
+      $test->assertEquals($json['object']['to'][0], $expect);
+
+      $expect = 'zBbw7K7L1dEwr6htZX5JevRv3oLtHwXQU4o5jT8jn9RKF';
+      $test->assertEquals($json['attachment'][0]['digestMultibase'], $expect);
+
+      $expect = 'http://127.0.0.1:8000/static/article/o_53803618dc1691.28179609-orig.jpg';
+      $test->assertEquals($json['attachment'][0]['url'], $expect);
+    });
+  });
+
+  // TODO: 未完了
+
+  $test->printSummary();
+}
\ No newline at end of file