diff --git a/app/Libraries/Aauth.php b/app/Libraries/Aauth.php
index 4135751..2cd0ab6 100644
--- a/app/Libraries/Aauth.php
+++ b/app/Libraries/Aauth.php
@@ -857,9 +857,11 @@ class Aauth
 
 		if ($userModel->transStatus() === false)
 		{
+			// @codeCoverageIgnoreStart
 			$userModel->transRollback();
 
 			return false;
+			// @codeCoverageIgnoreEnd
 		}
 		else
 		{
@@ -1709,9 +1711,11 @@ class Aauth
 
 		if ($groupModel->transStatus() === false)
 		{
+			// @codeCoverageIgnoreStart
 			$groupModel->transRollback();
 
 			return false;
+			// @codeCoverageIgnoreEnd
 		}
 		else
 		{
@@ -2360,9 +2364,11 @@ class Aauth
 
 		if ($permModel->transStatus() === false)
 		{
+			// @codeCoverageIgnoreStart
 			$permModel->transRollback();
 
 			return false;
+			// @codeCoverageIgnoreEnd
 		}
 		else
 		{
@@ -2977,6 +2983,6 @@ class Aauth
 			}
 		}
 
-		trigger_error('Call to undefined method ' . __CLASS__ . '::' . $name . '()', E_USER_ERROR);
+		return trigger_error('Call to undefined method ' . __CLASS__ . '::' . $name . '()', E_USER_ERROR);
 	}
 }
diff --git a/tests/Aauth/Database/LoginAttemptModelTest.php b/tests/Aauth/Database/LoginAttemptModelTest.php
index b6e2cd6..4b721b0 100644
--- a/tests/Aauth/Database/LoginAttemptModelTest.php
+++ b/tests/Aauth/Database/LoginAttemptModelTest.php
@@ -62,8 +62,10 @@ class LoginAttemptModelTest extends CIDatabaseTestCase
 		$config                     = new \Config\Aauth();
 		$config->loginAttemptCookie = true;
 		$this->model                = new LoginAttemptModel($this->db, $config);
-		$loginAttempt               = $this->model->find();
-		$this->assertEquals(0, $loginAttempt);
+		$this->assertEquals(0, $this->model->find());
+
+		$this->model->save();
+		$this->assertEquals(1, $this->model->find());
 	}
 
 	public function testSaveCookie()
@@ -76,6 +78,11 @@ class LoginAttemptModelTest extends CIDatabaseTestCase
 		$this->assertEquals(1, $this->model->find());
 
 		$this->assertTrue($this->model->save());
+
+		$this->response = new \CodeIgniter\HTTP\Response(new App());
+		$this->response->setCookie('logins', 10, 4000);
+		$this->model = new LoginAttemptModel($this->db, $config, $this->response);
+		$this->assertFalse($this->model->save());
 	}
 
 	public function testDeleteCookie()
diff --git a/tests/Aauth/Libraries/Aauth/CallTest.php b/tests/Aauth/Libraries/Aauth/CallTest.php
new file mode 100644
index 0000000..ab89c01
--- /dev/null
+++ b/tests/Aauth/Libraries/Aauth/CallTest.php
@@ -0,0 +1,21 @@
+<?php namespace Tests\Aauth\Libraries\Aauth;
+
+use App\Libraries\Aauth;
+
+class CallTest extends \CIUnitTestCase
+{
+	public function setUp()
+	{
+		parent::setUp();
+
+		$this->library = new Aauth();
+	}
+
+	//--------------------------------------------------------------------
+
+	public function testFailCall()
+	{
+		$this->expectException('ErrorException'); // Or whichever exception it is
+		$this->library->getNotExistingFunc();
+	}
+}
diff --git a/tests/Aauth/Libraries/Aauth/PermTest.php b/tests/Aauth/Libraries/Aauth/PermTest.php
index be876b6..c6a612a 100644
--- a/tests/Aauth/Libraries/Aauth/PermTest.php
+++ b/tests/Aauth/Libraries/Aauth/PermTest.php
@@ -517,5 +517,7 @@ class PermTest extends CIDatabaseTestCase
 		$groupPermsOrderBy = $this->library->listGroupPermsPaginated(2, 10, 'id DESC');
 		$this->assertEquals('testPerm2', $groupPermsOrderBy['perms'][0]['name']);
 		$this->assertEquals('testPerm1', $groupPermsOrderBy['perms'][1]['name']);
+
+		$this->assertFalse($this->library->listGroupPermsPaginated(99));
 	}
 }
diff --git a/tests/Aauth/Libraries/Aauth/TOTPTest.php b/tests/Aauth/Libraries/Aauth/TOTPTest.php
index c29380a..53e5d79 100644
--- a/tests/Aauth/Libraries/Aauth/TOTPTest.php
+++ b/tests/Aauth/Libraries/Aauth/TOTPTest.php
@@ -94,7 +94,6 @@ class TOTPTest extends CIDatabaseTestCase
 
 		$totp     = TOTP::create('JBSWY3DPEHPK3PXP');
 		$totpCode = $totp->now();
-		usleep(1000);
 		$this->assertTrue($this->library->login('admin@example.com', 'password123456', null, $totpCode));
 
 		$userModel = new UserModel();
@@ -110,6 +109,8 @@ class TOTPTest extends CIDatabaseTestCase
 		$this->library = new Aauth($config, $session);
 
 		$this->library = new Aauth($config, $session);
+		$totp          = TOTP::create('JBSWY3DPEHPK3PXP');
+		$totpCode      = $totp->now();
 		$this->assertTrue($this->library->login('admin@example.com', 'password123456', null, $totpCode));
 
 		$userModel->protect(false)->update(1, ['last_ip_address' => '99.99.99.99']);
@@ -202,7 +203,6 @@ class TOTPTest extends CIDatabaseTestCase
 
 		$totp     = TOTP::create('JBSWY3DPEHPK3PXP');
 		$totpCode = $totp->now();
-		usleep(1000);
 
 		$this->assertTrue($this->library->verifyUserTotpCode($totpCode));
 		$this->assertTrue($this->library->verifyUserTotpCode($totpCode, 1));