diff --git a/.github/workflows/ci_build.yml b/.github/workflows/ci_build.yml
index 9f42f99..74c899b 100644
--- a/.github/workflows/ci_build.yml
+++ b/.github/workflows/ci_build.yml
@@ -13,14 +13,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: ['7.2', '7.3', '7.4']
+        php-versions: ['7.3', '7.4', '8.0']
     steps:
       - name: Setup PHP Action
-        uses: shivammathur/setup-php@1.8.2
+        uses: shivammathur/setup-php@v2
         with:
           extensions: intl
           php-version: "${{ matrix.php-versions }}"
-          coverage: pcov
+          coverage: xdebug
       - name: Shutdown Ubuntu MySQL (SUDO)
         run: sudo service mysql stop
       - name: Setup MySQL
@@ -50,7 +50,7 @@ jobs:
         run: |
           composer require --dev infection/infection
           vendor/bin/infection
-      - if: matrix.php-versions == '7.2'
+      - if: matrix.php-versions == '7.3'
         name: Upload coverage to Codecov
         uses: codecov/codecov-action@v1
         with:
@@ -59,4 +59,4 @@ jobs:
           flags: tests
           name: codecov-umbrella
           yml: ./codecov.yml
-          fail_ci_if_error: true
\ No newline at end of file
+          fail_ci_if_error: true
diff --git a/composer.json b/composer.json
index 5b564d6..95263f0 100644
--- a/composer.json
+++ b/composer.json
@@ -18,13 +18,13 @@
         }
     ],
     "require": {
-        "php": "^7.2"
+        "php": "^7.3 || ^8.0"
     },
     "require-dev": {
         "codeigniter4/codeigniter4-standard": "^1.0.1",
-        "codeigniter4/framework": "^4.0.3",
+        "codeigniter4/framework": "^4.1",
         "phpstan/phpstan": "^0.12.14",
-        "phpunit/phpunit": "^8",
+        "phpunit/phpunit": "^9",
         "squizlabs/php_codesniffer": "^3.1"
     },
     "config": {
diff --git a/phpstan.neon b/phpstan.neon
index a2f2615..84e2739 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -2,7 +2,8 @@ includes:
         - vendor/phpstan/phpstan/conf/bleedingEdge.neon
 
 parameters:
-    bootstrap: bootstrap.php
+    bootstrapFiles:
+        - bootstrap.php
     inferPrivatePropertyTypeFromConstructor: true
     checkMissingIterableValueType: false
     excludes_analyse:
@@ -15,4 +16,3 @@ parameters:
         - '#Call to an undefined static method Config\\Services::albumRepository\(\)#'
         - '#Call to an undefined static method Config\\Services::trackRepository\(\)#'
         - '#Call to an undefined static method Config\\Services::albumTrackSummary\(\)#'
-        - '#Call to protected method builder\(\) of class CodeIgniter\\Model.#'
\ No newline at end of file
diff --git a/src/Controllers/Album.php b/src/Controllers/Album.php
index 0ef7dc2..76604ae 100644
--- a/src/Controllers/Album.php
+++ b/src/Controllers/Album.php
@@ -9,6 +9,9 @@
 
 class Album extends BaseController
 {
+	/** @var \CodeIgniter\HTTP\IncomingRequest */
+	protected $request;
+
 	/** @var AlbumRepository */
 	private $repository;
 
diff --git a/src/Controllers/Track.php b/src/Controllers/Track.php
index b1673a8..bad46cd 100644
--- a/src/Controllers/Track.php
+++ b/src/Controllers/Track.php
@@ -10,6 +10,9 @@
 
 class Track extends BaseController
 {
+	/** @var \CodeIgniter\HTTP\IncomingRequest */
+	protected $request;
+
 	/** @var AlbumRepository */
 	private $albumRepository;
 
diff --git a/src/Infrastructure/Persistence/DMLPersistence.php b/src/Infrastructure/Persistence/DMLPersistence.php
index 69e5943..a972bec 100644
--- a/src/Infrastructure/Persistence/DMLPersistence.php
+++ b/src/Infrastructure/Persistence/DMLPersistence.php
@@ -1,5 +1,6 @@
 <?php namespace Album\Infrastructure\Persistence;
 
+use CodeIgniter\Database\Exceptions\DataException;
 use CodeIgniter\Model;
 
 /**
@@ -10,6 +11,13 @@ trait DMLPersistence
 {
 	public function save(array $data = null): bool
 	{
-		return $this->model instanceof Model && $this->model->save(new $this->model->returnType($data));
+		try
+		{
+			return $this->model instanceof Model && $this->model->save(new $this->model->returnType($data));
+		}
+		catch (DataException $e)
+		{
+			return false;
+		}
 	}
 }
diff --git a/test/Controller/AlbumTest.php b/test/Controller/AlbumTest.php
index 47a9cd6..42f65de 100644
--- a/test/Controller/AlbumTest.php
+++ b/test/Controller/AlbumTest.php
@@ -2,8 +2,9 @@
 
 use Album\Controllers\Album;
 use Album\Database\Seeds\AlbumSeeder;
-use CodeIgniter\Test\CIDatabaseTestCase;
-use CodeIgniter\Test\ControllerTester;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\ControllerTestTrait;
+use CodeIgniter\Test\DatabaseTestTrait;
 use Config\Database;
 use Config\Services;
 
@@ -11,9 +12,9 @@
  * @runTestsInSeparateProcesses
  * @preserveGlobalState         disabled
  */
-class AlbumTest extends CIDatabaseTestCase
+class AlbumTest extends CIUnitTestCase
 {
-	use ControllerTester;
+	use DatabaseTestTrait, ControllerTestTrait;
 
 	protected $basePath  = __DIR__ . '/../src/Database/';
 	protected $namespace = 'Album';
@@ -44,7 +45,7 @@ public function testIndexAlbumHasData()
 	public function testIndexSearchAlbumFound()
 	{
 		$request = Services::request();
-		$request->setMethod('get');
+		$request = $request->withMethod('get');
 		$request->setGlobal('get', [
 			'keyword' => 'Sheila',
 		]);
@@ -59,7 +60,7 @@ public function testIndexSearchAlbumFound()
 	public function testIndexSearchAlbumNotFound()
 	{
 		$request = Services::request();
-		$request->setMethod('get');
+		$request = $request->withMethod('get');
 		$request->setGlobal('get', [
 			'keyword' => 'Siti',
 		]);
@@ -82,28 +83,19 @@ public function testAddAlbum()
 	public function testAddAlbumInvalidData()
 	{
 		$request = Services::request(null, false);
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 
-		$result = $this->withRequest($request)
-						->controller(Album::class)
-						->execute('add');
-		$this->assertTrue($result->isRedirect());
+		$this->withRequest($request)
+			 ->controller(Album::class)
+			 ->execute('add');
 
-		$request = Services::request(null, false);
-		$request->setMethod('get');
-
-		$result = $this->withRequest($request)
-					   ->controller(Album::class)
-					   ->execute('add');
-		$this->assertTrue($result->isOK());
-		$this->assertTrue($result->see('The artist field is required.'));
-		$this->assertTrue($result->see('The title field is required.'));
+		$this->seeNumRecords(1, 'album', []);
 	}
 
 	public function testAddAlbumValidData()
 	{
 		$request = Services::request();
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 		$request->setGlobal('post', [
 			'artist' => 'Siti Nurhaliza',
 			'title'  => 'Anugrah Aidilfitri',
@@ -135,28 +127,19 @@ public function testEditExistenceAlbum()
 	public function testEditAlbumInvalidData()
 	{
 		$request = Services::request(null, false);
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 
 		$result = $this->withRequest($request)
 						->controller(Album::class)
 						->execute('edit', 1);
 		$this->assertTrue($result->isRedirect());
-
-		$request = Services::request(null, false);
-		$request->setMethod('get');
-
-		$result = $this->withRequest($request)
-					   ->controller(Album::class)
-					   ->execute('edit', 1);
-		$this->assertTrue($result->isOK());
-		$this->assertTrue($result->see('The artist field is required.'));
-		$this->assertTrue($result->see('The title field is required.'));
+		$this->assertNotEquals('http://localhost:8080/index.php/album', $result->getRedirectUrl());
 	}
 
 	public function testEditAlbumValidData()
 	{
 		$request = Services::request();
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 		$request->setGlobal('post', [
 			'id'     => 1,
 			'artist' => 'Siti Nurhaliza',
@@ -168,6 +151,7 @@ public function testEditAlbumValidData()
 					   ->execute('edit', 1);
 
 		$this->assertTrue($result->isRedirect());
+		$this->assertEquals('http://localhost:8080/index.php/album', $result->getRedirectUrl());
 	}
 
 	public function testDeleteUnexistenceAlbum()
diff --git a/test/Controller/AlbumTrackSummaryTest.php b/test/Controller/AlbumTrackSummaryTest.php
index a45586c..8752436 100644
--- a/test/Controller/AlbumTrackSummaryTest.php
+++ b/test/Controller/AlbumTrackSummaryTest.php
@@ -3,13 +3,18 @@
 use Album\Controllers\AlbumTrackSummary;
 use Album\Database\Seeds\AlbumSeeder;
 use Album\Database\Seeds\TrackSeeder;
-use CodeIgniter\Test\CIDatabaseTestCase;
-use CodeIgniter\Test\ControllerTester;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\ControllerTestTrait;
+use CodeIgniter\Test\DatabaseTestTrait;
 use Config\Database;
 
-class AlbumTrackSummaryTest extends CIDatabaseTestCase
+/**
+ * @runTestsInSeparateProcesses
+ * @preserveGlobalState         disabled
+ */
+class AlbumTrackSummaryTest extends CIUnitTestCase
 {
-	use ControllerTester;
+	use ControllerTestTrait, DatabaseTestTrait;
 
 	protected $basePath  = __DIR__ . '/../src/Database/';
 	protected $namespace = 'Album';
@@ -37,6 +42,6 @@ public function testTotalSongSummaryHasData()
 					   ->execute('totalsong');
 
 		$this->assertTrue($result->isOK());
-		$this->assertRegExp('/Sheila On 7<\/td>\s{0,}\n\s{0,}<td>1<\/td>/', $result->getBody());
+		$this->assertMatchesRegularExpression('/Sheila On 7<\/td>\s{0,}\n\s{0,}<td>1<\/td>/', $result->getBody());
 	}
 }
diff --git a/test/Controller/TrackTest.php b/test/Controller/TrackTest.php
index 1eabbb5..4ad7685 100644
--- a/test/Controller/TrackTest.php
+++ b/test/Controller/TrackTest.php
@@ -3,8 +3,9 @@
 use Album\Controllers\Track;
 use Album\Database\Seeds\AlbumSeeder;
 use Album\Database\Seeds\TrackSeeder;
-use CodeIgniter\Test\CIDatabaseTestCase;
-use CodeIgniter\Test\ControllerTester;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\ControllerTestTrait;
+use CodeIgniter\Test\DatabaseTestTrait;
 use Config\Database;
 use Config\Services;
 
@@ -12,9 +13,9 @@
  * @runTestsInSeparateProcesses
  * @preserveGlobalState         disabled
  */
-class TrackTest extends CIDatabaseTestCase
+class TrackTest extends CIUnitTestCase
 {
-	use ControllerTester;
+	use DatabaseTestTrait, ControllerTestTrait;
 
 	protected $basePath  = __DIR__ . '/../src/Database/';
 	protected $namespace = 'Album';
@@ -56,7 +57,7 @@ public function testIndexTrackHasData()
 	public function testIndexSearchTrackFound()
 	{
 		$request = Services::request();
-		$request->setMethod('get');
+		$request = $request->withMethod('get');
 		$request->setGlobal('get', [
 			'keyword' => 'kisah',
 		]);
@@ -71,7 +72,7 @@ public function testIndexSearchTrackFound()
 	public function testIndexSearchTrackNotFound()
 	{
 		$request = Services::request();
-		$request->setMethod('get');
+		$request = $request->withMethod('get');
 		$request->setGlobal('get', [
 			'keyword' => 'Purnama',
 		]);
@@ -102,28 +103,19 @@ public function testAddTrack()
 	public function testAddTrackInvalidData()
 	{
 		$request = Services::request(null, false);
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 
 		$result = $this->withRequest($request)
 						->controller(Track::class)
 						->execute('add', 1);
 		$this->assertTrue($result->isRedirect());
-
-		$request = Services::request(null, false);
-		$request->setMethod('get');
-
-		$result = $this->withRequest($request)
-					   ->controller(Track::class)
-					   ->execute('add', 1);
-		$this->assertTrue($result->isOK());
-		$this->assertTrue($result->see('The title field is required.'));
-		$this->assertTrue($result->see('The author field is required.'));
+		$this->seeNumRecords(1, 'track', []);
 	}
 
 	public function testAddTrackValidData()
 	{
 		$request = Services::request();
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 		$request->setGlobal('post', [
 			'album_id' => 1,
 			'title'    => 'Sahabat Sejati',
@@ -156,28 +148,19 @@ public function testEditExistenceTrack()
 	public function testEditTrackInvalidData()
 	{
 		$request = Services::request(null, false);
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 
 		$result = $this->withRequest($request)
 						->controller(Track::class)
 						->execute('edit', 1, 1);
 		$this->assertTrue($result->isRedirect());
-
-		$request = Services::request(null, false);
-		$request->setMethod('get');
-
-		$result = $this->withRequest($request)
-					   ->controller(Track::class)
-					   ->execute('edit', 1, 1);
-		$this->assertTrue($result->isOK());
-		$this->assertTrue($result->see('The title field is required.'));
-		$this->assertTrue($result->see('The author field is required.'));
+		$this->assertNotEquals('http://localhost:8080/index.php/album-track/1', $result->getRedirectUrl());
 	}
 
 	public function testEditTrackValidData()
 	{
 		$request = Services::request();
-		$request->setMethod('post');
+		$request = $request->withMethod('post');
 		$request->setGlobal('post', [
 			'id'       => 1,
 			'album_id' => 1,
@@ -190,6 +173,7 @@ public function testEditTrackValidData()
 					   ->execute('edit', 1, 1);
 
 		$this->assertTrue($result->isRedirect());
+		$this->assertEquals('http://localhost:8080/index.php/album-track/1', $result->getRedirectUrl());
 	}
 
 	public function testDeleteUnexistenceTrack()
diff --git a/test/Database/Infrastructure/Persistence/Album/SQLAlbumRepositoryTest.php b/test/Database/Infrastructure/Persistence/Album/SQLAlbumRepositoryTest.php
index 18bac6f..bdafacb 100644
--- a/test/Database/Infrastructure/Persistence/Album/SQLAlbumRepositoryTest.php
+++ b/test/Database/Infrastructure/Persistence/Album/SQLAlbumRepositoryTest.php
@@ -3,11 +3,14 @@
 use Album\Database\Seeds\AlbumSeeder;
 use Album\Domain\Album\Album;
 use Album\Domain\Album\AlbumNotFoundException;
-use CodeIgniter\Test\CIDatabaseTestCase;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\DatabaseTestTrait;
 use Config\Services;
 
-class SQLAlbumRepositoryTest extends CIDatabaseTestCase
+class SQLAlbumRepositoryTest extends CIUnitTestCase
 {
+	use DatabaseTestTrait;
+
 	protected $basePath  = __DIR__ . '/../src/Database/';
 	protected $namespace = 'Album';
 	protected $seed      = AlbumSeeder::class;
diff --git a/test/Database/Infrastructure/Persistence/AlbumTrackSummary/SQLAlbumTrackSummaryRepositoryTest.php b/test/Database/Infrastructure/Persistence/AlbumTrackSummary/SQLAlbumTrackSummaryRepositoryTest.php
index b2a633a..4d1ab63 100644
--- a/test/Database/Infrastructure/Persistence/AlbumTrackSummary/SQLAlbumTrackSummaryRepositoryTest.php
+++ b/test/Database/Infrastructure/Persistence/AlbumTrackSummary/SQLAlbumTrackSummaryRepositoryTest.php
@@ -2,11 +2,14 @@
 
 use Album\Database\Seeds\AlbumSeeder;
 use Album\Database\Seeds\TrackSeeder;
-use CodeIgniter\Test\CIDatabaseTestCase;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\DatabaseTestTrait;
 use Config\Services;
 
-class SQLAlbumTrackSummaryRepositoryTest extends CIDatabaseTestCase
+class SQLAlbumTrackSummaryRepositoryTest extends CIUnitTestCase
 {
+	use DatabaseTestTrait;
+
 	protected $basePath  = __DIR__ . '/../src/Database/';
 	protected $namespace = 'Album';
 	protected $seed      = [
diff --git a/test/Database/Infrastructure/Persistence/Track/SQLTrackRepositoryTest.php b/test/Database/Infrastructure/Persistence/Track/SQLTrackRepositoryTest.php
index 22917fc..084756d 100644
--- a/test/Database/Infrastructure/Persistence/Track/SQLTrackRepositoryTest.php
+++ b/test/Database/Infrastructure/Persistence/Track/SQLTrackRepositoryTest.php
@@ -5,11 +5,14 @@
 use Album\Domain\Album\Album;
 use Album\Domain\Track\Track;
 use Album\Domain\Track\TrackNotFoundException;
-use CodeIgniter\Test\CIDatabaseTestCase;
+use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\DatabaseTestTrait;
 use Config\Services;
 
-class SQLTrackRepositoryTest extends CIDatabaseTestCase
+class SQLTrackRepositoryTest extends CIUnitTestCase
 {
+	use DatabaseTestTrait;
+
 	protected $basePath  = __DIR__ . '/../src/Database/';
 	protected $namespace = 'Album';
 	protected $seed      = [