diff --git a/src/Module/Api/Twitter/Users/Lookup.php b/src/Module/Api/Twitter/Users/Lookup.php
index 9d4c460c6e..2633020e84 100644
--- a/src/Module/Api/Twitter/Users/Lookup.php
+++ b/src/Module/Api/Twitter/Users/Lookup.php
@@ -39,8 +39,8 @@ class Lookup extends BaseApi
 
 		$users = [];
 
-		if (!empty($_REQUEST['user_id'])) {
-			foreach (explode(',', $_REQUEST['user_id']) as $cid) {
+		if (!empty($request['user_id'])) {
+			foreach (explode(',', $request['user_id']) as $cid) {
 				if (!empty($cid) && is_numeric($cid)) {
 					$users[] = DI::twitterUser()->createFromContactId((int)$cid, $uid, false)->toArray();
 				}
diff --git a/tests/legacy/ApiTest.php b/tests/legacy/ApiTest.php
index 2067a35362..fea2bd5f1b 100644
--- a/tests/legacy/ApiTest.php
+++ b/tests/legacy/ApiTest.php
@@ -112,55 +112,6 @@ class ApiTest extends FixtureTest
 		BasicAuth::setCurrentUserID($this->selfUser['id']);
 	}
 
-	/**
-	 * Assert that an user array contains expected keys.
-	 *
-	 * @param array $user User array
-	 *
-	 * @return void
-	 */
-	private function assertSelfUser(array $user)
-	{
-		self::assertEquals($this->selfUser['id'], $user['uid']);
-		self::assertEquals($this->selfUser['id'], $user['cid']);
-		self::assertEquals(1, $user['self']);
-		self::assertEquals('DFRN', $user['location']);
-		self::assertEquals($this->selfUser['name'], $user['name']);
-		self::assertEquals($this->selfUser['nick'], $user['screen_name']);
-		self::assertEquals('dfrn', $user['network']);
-		self::assertTrue($user['verified']);
-	}
-
-	/**
-	 * Assert that an user array contains expected keys.
-	 *
-	 * @param array $user User array
-	 *
-	 * @return void
-	 */
-	private function assertOtherUser(array $user = [])
-	{
-		self::assertEquals($this->otherUser['id'], $user['id']);
-		self::assertEquals($this->otherUser['id'], $user['id_str']);
-		self::assertEquals($this->otherUser['name'], $user['name']);
-		self::assertEquals($this->otherUser['nick'], $user['screen_name']);
-		self::assertFalse($user['verified']);
-	}
-
-	/**
-	 * Assert that a status array contains expected keys.
-	 *
-	 * @param array $status Status array
-	 *
-	 * @return void
-	 */
-	private function assertStatus(array $status = [])
-	{
-		self::assertIsString($status['text'] ?? '');
-		self::assertIsInt($status['id'] ?? '');
-		// We could probably do more checks here.
-	}
-
 	/**
 	 * Assert that a list array contains expected keys.
 	 *
diff --git a/tests/src/Module/Api/ApiTest.php b/tests/src/Module/Api/ApiTest.php
index 9d690b1af3..09fbb7bbe9 100644
--- a/tests/src/Module/Api/ApiTest.php
+++ b/tests/src/Module/Api/ApiTest.php
@@ -37,6 +37,31 @@ use Psr\Http\Message\ResponseInterface;
 
 abstract class ApiTest extends FixtureTest
 {
+	// User data that the test database is populated with
+	const SELF_USER = [
+		'id'   => 42,
+		'name' => 'Self contact',
+		'nick' => 'selfcontact',
+		'nurl' => 'http://localhost/profile/selfcontact'
+	];
+
+	const FRIEND_USER = [
+		'id'   => 44,
+		'name' => 'Friend contact',
+		'nick' => 'friendcontact',
+		'nurl' => 'http://localhost/profile/friendcontact'
+	];
+
+	const OTHER_USER = [
+		'id'   => 43,
+		'name' => 'othercontact',
+		'nick' => 'othercontact',
+		'nurl' => 'http://localhost/profile/othercontact'
+	];
+
+	// User ID that we know is not in the database
+	const WRONG_USER_ID = 666;
+
 	/**
 	 * Assert that the string is XML and contain the root element.
 	 *
@@ -52,6 +77,55 @@ abstract class ApiTest extends FixtureTest
 		// We could probably do more checks here.
 	}
 
+	/**
+	 * Assert that an user array contains expected keys.
+	 *
+	 * @param \stdClass $user User
+	 *
+	 * @return void
+	 */
+	protected function assertSelfUser(\stdClass $user)
+	{
+		self::assertEquals(self::SELF_USER['id'], $user->uid);
+		self::assertEquals(self::SELF_USER['id'], $user->cid);
+		self::assertEquals(1, $user->self);
+		self::assertEquals('DFRN', $user->location);
+		self::assertEquals(self::SELF_USER['name'], $user->name);
+		self::assertEquals(self::SELF_USER['nick'], $user->screen_name);
+		self::assertEquals('dfrn', $user->network);
+		self::assertTrue($user->verified);
+	}
+
+	/**
+	 * Assert that an user array contains expected keys.
+	 *
+	 * @param \stdClass $user User
+	 *
+	 * @return void
+	 */
+	protected function assertOtherUser(\stdClass $user)
+	{
+		self::assertEquals(self::OTHER_USER['id'], $user->id);
+		self::assertEquals(self::OTHER_USER['id'], $user->id_str);
+		self::assertEquals(self::OTHER_USER['name'], $user->name);
+		self::assertEquals(self::OTHER_USER['nick'], $user->screen_name);
+		self::assertFalse($user->verified);
+	}
+
+	/**
+	 * Assert that a status array contains expected keys.
+	 *
+	 * @param array $status Status array
+	 *
+	 * @return void
+	 */
+	protected function assertStatus(array $status = [])
+	{
+		self::assertIsString($status['text'] ?? '');
+		self::assertIsInt($status['id'] ?? '');
+		// We could probably do more checks here.
+	}
+
 	/**
 	 * Transforms a response into a JSON class
 	 *
diff --git a/tests/src/Module/Api/Twitter/Users/LookupTest.php b/tests/src/Module/Api/Twitter/Users/LookupTest.php
index ddcedbc763..e54d20dcfb 100644
--- a/tests/src/Module/Api/Twitter/Users/LookupTest.php
+++ b/tests/src/Module/Api/Twitter/Users/LookupTest.php
@@ -2,6 +2,10 @@
 
 namespace Friendica\Test\src\Module\Api\Twitter\Users;
 
+use Friendica\App\Router;
+use Friendica\DI;
+use Friendica\Module\Api\Twitter\Users\Lookup;
+use Friendica\Network\HTTPException\NotFoundException;
 use Friendica\Test\src\Module\Api\ApiTest;
 
 class LookupTest extends ApiTest
@@ -13,8 +17,10 @@ class LookupTest extends ApiTest
 	 */
 	public function testApiUsersLookup()
 	{
-		// $this->expectException(\Friendica\Network\HTTPException\NotFoundException::class);
-		// api_users_lookup('json');
+		$this->expectException(NotFoundException::class);
+
+		$lookup = new Lookup(DI::app(), DI::l10n(), DI::baseUrl(), DI::args(), DI::logger(), DI::profiler(), DI::apiResponse(), ['REQUEST_METHOD' => Router::GET]);
+		$lookup->run();
 	}
 
 	/**
@@ -24,8 +30,11 @@ class LookupTest extends ApiTest
 	 */
 	public function testApiUsersLookupWithUserId()
 	{
-		// $_REQUEST['user_id'] = $this->otherUser['id'];
-		// $result              = api_users_lookup('json');
-		// self::assertOtherUser($result['users'][0]);
+		$lookup = new Lookup(DI::app(), DI::l10n(), DI::baseUrl(), DI::args(), DI::logger(), DI::profiler(), DI::apiResponse(), ['REQUEST_METHOD' => Router::GET]);
+		$respone = $lookup->run(['user_id' => static::OTHER_USER['id']]);
+
+		$json = $this->toJson($respone);
+
+		self::assertOtherUser($json[0]);
 	}
 }