diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 313284a..d23e48b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,3 +14,6 @@ jobs:
 
       - name: Test CGL
         run: ./vendor/bin/phpcs
+
+      - name: Execute PHPUnit Tests
+        run: ./vendor/bin/phpunit
diff --git a/Tests/Unit/Domain/Model/PageviewTest.php b/Tests/Unit/Domain/Model/PageviewTest.php
new file mode 100644
index 0000000..87f5b1c
--- /dev/null
+++ b/Tests/Unit/Domain/Model/PageviewTest.php
@@ -0,0 +1,169 @@
+<?php
+
+namespace DanielSiepmann\Tracking\Unit\Domain\Model;
+
+/*
+ * Copyright (C) 2020 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use DanielSiepmann\Tracking\Domain\Model\Pageview;
+use PHPUnit\Framework\TestCase;
+use TYPO3\CMS\Core\Site\Entity\SiteLanguage;
+
+/**
+ * @covers DanielSiepmann\Tracking\Domain\Model\Pageview
+ */
+class PageviewTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function canBeCreated()
+    {
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $subject = new Pageview(
+            0,
+            $language->reveal(),
+            new \DateTimeImmutable(),
+            0,
+            '',
+            ''
+        );
+
+        static::assertInstanceOf(Pageview::class, $subject);
+    }
+
+    /**
+     * @test
+     */
+    public function returnsPageUid()
+    {
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $subject = new Pageview(
+            500,
+            $language->reveal(),
+            new \DateTimeImmutable(),
+            0,
+            '',
+            ''
+        );
+
+        static::assertSame(500, $subject->getPageUid());
+    }
+
+    /**
+     * @test
+     */
+    public function returnsLanguage()
+    {
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $subject = new Pageview(
+            0,
+            $language->reveal(),
+            new \DateTimeImmutable(),
+            0,
+            '',
+            ''
+        );
+
+        static::assertSame($language->reveal(), $subject->getLanguage());
+    }
+
+    /**
+     * @test
+     */
+    public function returnsCrdate()
+    {
+        $language = $this->prophesize(SiteLanguage::class);
+        $crdate = new \DateTimeImmutable();
+
+        $subject = new Pageview(
+            0,
+            $language->reveal(),
+            $crdate,
+            0,
+            '',
+            ''
+        );
+
+        static::assertSame($crdate, $subject->getCrdate());
+    }
+
+    /**
+     * @test
+     */
+    public function returnsPageType()
+    {
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $subject = new Pageview(
+            0,
+            $language->reveal(),
+            new \DateTimeImmutable(),
+            999,
+            '',
+            ''
+        );
+
+        static::assertSame(999, $subject->getPageType());
+    }
+
+    /**
+     * @test
+     */
+    public function returnsUrl()
+    {
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $subject = new Pageview(
+            0,
+            $language->reveal(),
+            new \DateTimeImmutable(),
+            0,
+            'https://example.com/path.html',
+            ''
+        );
+
+        static::assertSame('https://example.com/path.html', $subject->getUrl());
+    }
+
+    /**
+     * @test
+     */
+    public function returnsUserAgent()
+    {
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $subject = new Pageview(
+            0,
+            $language->reveal(),
+            new \DateTimeImmutable(),
+            0,
+            '',
+            'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0'
+        );
+
+        static::assertSame(
+            'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0',
+            $subject->getUserAgent()
+        );
+    }
+}
diff --git a/Tests/Unit/Domain/Pageview/FactoryTest.php b/Tests/Unit/Domain/Pageview/FactoryTest.php
new file mode 100644
index 0000000..0c97d35
--- /dev/null
+++ b/Tests/Unit/Domain/Pageview/FactoryTest.php
@@ -0,0 +1,196 @@
+<?php
+
+namespace DanielSiepmann\Tracking\Unit\Domain\Pageview;
+
+/*
+ * Copyright (C) 2020 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use DanielSiepmann\Tracking\Domain\Model\Pageview;
+use DanielSiepmann\Tracking\Domain\Pageview\Factory;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Routing\PageArguments;
+use TYPO3\CMS\Core\Site\Entity\SiteLanguage;
+
+/**
+ * @covers DanielSiepmann\Tracking\Domain\Pageview\Factory
+ */
+class FactoryTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function returnsPageview()
+    {
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(0);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('');
+        $request->getHeader('User-Agent')->willReturn([]);
+
+        $result = Factory::fromRequest($request->reveal());
+        static::assertInstanceOf(Pageview::class, $result);
+    }
+
+    /**
+     * @test
+     */
+    public function returnedPageviewContainsUserAgent()
+    {
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(0);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('');
+        $request->getHeader('User-Agent')->willReturn([
+            'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0'
+        ]);
+
+        $result = Factory::fromRequest($request->reveal());
+        static::assertSame(
+            'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0',
+            $result->getUserAgent()
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function returnedPageviewContainsUri()
+    {
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(0);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('https://example.com/path?query=params&some=more#anchor');
+        $request->getHeader('User-Agent')->willReturn([]);
+
+        $result = Factory::fromRequest($request->reveal());
+        static::assertSame(
+            'https://example.com/path?query=params&some=more#anchor',
+            $result->getUrl()
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function returnedPageviewContainsPageType()
+    {
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(50);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('');
+        $request->getHeader('User-Agent')->willReturn([]);
+
+        $result = Factory::fromRequest($request->reveal());
+        static::assertSame(
+            50,
+            $result->getPageType()
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function returnedPageviewContainsDateTime()
+    {
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(0);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('');
+        $request->getHeader('User-Agent')->willReturn([]);
+
+        $result = Factory::fromRequest($request->reveal());
+        static::assertInstanceOf(\DateTimeImmutable::class, $result->getCrdate());
+    }
+
+    /**
+     * @test
+     */
+    public function returnedPageviewContainsLanguage()
+    {
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(0);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('');
+        $request->getHeader('User-Agent')->willReturn([]);
+
+        $result = Factory::fromRequest($request->reveal());
+        static::assertInstanceOf(SiteLanguage::class, $result->getLanguage());
+    }
+
+    /**
+     * @test
+     */
+    public function returnedPageviewContainsPageId()
+    {
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(0);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('');
+        $request->getHeader('User-Agent')->willReturn([]);
+
+        $result = Factory::fromRequest($request->reveal());
+        static::assertSame(
+            10,
+            $result->getPageUid()
+        );
+    }
+}
diff --git a/Tests/Unit/Domain/Repository/PageviewTest.php b/Tests/Unit/Domain/Repository/PageviewTest.php
new file mode 100644
index 0000000..bd07858
--- /dev/null
+++ b/Tests/Unit/Domain/Repository/PageviewTest.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace DanielSiepmann\Tracking\Unit\Domain\Repository;
+
+/*
+ * Copyright (C) 2020 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use DanielSiepmann\Tracking\Domain\Model\Pageview as Model;
+use DanielSiepmann\Tracking\Domain\Repository\Pageview;
+use PHPUnit\Framework\TestCase;
+use TYPO3\CMS\Core\Database\Connection;
+use TYPO3\CMS\Core\Site\Entity\SiteLanguage;
+
+/**
+ * @covers DanielSiepmann\Tracking\Domain\Repository\Pageview
+ */
+class PageviewTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function modelCanBeAdded()
+    {
+        $connection = $this->prophesize(Connection::class);
+
+        $dateTime = $this->prophesize(\DateTimeImmutable::class);
+        $dateTime->format('U')->willReturn(1582660189);
+
+        $language = $this->prophesize(SiteLanguage::class);
+        $language->getLanguageId()->willReturn(2);
+
+        $model = $this->prophesize(Model::class);
+        $model->getPageUid()->willReturn(10);
+        $model->getCrdate()->willReturn($dateTime->reveal());
+        $model->getPageType()->willReturn(999);
+        $model->getLanguage()->willReturn($language->reveal());
+        $model->getUrl()->willReturn('https://example.com/path.html');
+        $model->getUserAgent()->willReturn('Mozilla/5.0 (Windows NT 10.0) Gecko/20100101 Firefox/74.0');
+
+        $connection->insert(
+            'tx_tracking_pageview',
+            [
+                'pid' => 10,
+                'crdate' => 1582660189,
+                'tstamp' => 1582660189,
+                'type' => 999,
+                'sys_language_uid' => 2,
+                'url' => 'https://example.com/path.html',
+                'user_agent' => 'Mozilla/5.0 (Windows NT 10.0) Gecko/20100101 Firefox/74.0',
+            ]
+        )->willReturn(1)->shouldBeCalledTimes(1);
+
+        $subject = new Pageview($connection->reveal());
+        $subject->add($model->reveal());
+    }
+}
diff --git a/Tests/Unit/Middleware/PageviewTest.php b/Tests/Unit/Middleware/PageviewTest.php
new file mode 100644
index 0000000..5f88677
--- /dev/null
+++ b/Tests/Unit/Middleware/PageviewTest.php
@@ -0,0 +1,95 @@
+<?php
+
+namespace DanielSiepmann\Tracking\Unit\Middleware;
+
+/*
+ * Copyright (C) 2020 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use DanielSiepmann\Tracking\Domain\Model\Pageview as Model;
+use DanielSiepmann\Tracking\Domain\Repository\Pageview as Repository;
+use DanielSiepmann\Tracking\Middleware\Pageview;
+use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Routing\PageArguments;
+use TYPO3\CMS\Core\Site\Entity\SiteLanguage;
+
+/**
+ * @covers DanielSiepmann\Tracking\Middleware\Pageview
+ */
+class PageviewTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function doesNotAddBlacklistedRequest()
+    {
+        $repository = $this->prophesize(Repository::class);
+        $context = $this->prophesize(Context::class);
+        $rule = 'false';
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $response = $this->prophesize(ResponseInterface::class);
+        $handler = $this->prophesize(RequestHandlerInterface::class);
+
+        $handler->handle($request->reveal())->willReturn($response->reveal());
+        $repository->add()->shouldNotBeCalled();
+
+        $subject = new Pageview($repository->reveal(), $context->reveal(), $rule);
+        $result = $subject->process($request->reveal(), $handler->reveal());
+
+        static::assertInstanceOf(ResponseInterface::class, $result);
+    }
+
+    /**
+     * @test
+     */
+    public function addsPageviewToRepository()
+    {
+        $repository = $this->prophesize(Repository::class);
+        $context = $this->prophesize(Context::class);
+        $rule = 'true';
+
+        $routing = $this->prophesize(PageArguments::class);
+        $routing->getPageId()->willReturn(10);
+        $routing->getPageType()->willReturn(0);
+
+        $language = $this->prophesize(SiteLanguage::class);
+
+        $request = $this->prophesize(ServerRequestInterface::class);
+        $request->getAttribute('routing')->willReturn($routing->reveal());
+        $request->getAttribute('language')->willReturn($language->reveal());
+        $request->getUri()->willReturn('');
+        $request->getHeader('User-Agent')->willReturn([]);
+
+        $response = $this->prophesize(ResponseInterface::class);
+        $handler = $this->prophesize(RequestHandlerInterface::class);
+
+        $handler->handle($request->reveal())->willReturn($response->reveal());
+        $repository->add(Argument::type(Model::class))->shouldBeCalledtimes(1);
+
+        $subject = new Pageview($repository->reveal(), $context->reveal(), $rule);
+        $result = $subject->process($request->reveal(), $handler->reveal());
+
+        static::assertInstanceOf(ResponseInterface::class, $result);
+    }
+}
diff --git a/composer.json b/composer.json
index ee05abe..32ef533 100644
--- a/composer.json
+++ b/composer.json
@@ -14,6 +14,11 @@
             "DanielSiepmann\\Tracking\\": "Classes/"
         }
     },
+    "autoload-dev": {
+        "psr-4": {
+            "DanielSiepmann\\Tracking\\Tests\\": "Tests/"
+        }
+    },
     "require": {
         "doctrine/dbal": "^2.10",
         "php": "^7.3.0",
@@ -43,6 +48,7 @@
         ]
     },
     "require-dev": {
-        "squizlabs/php_codesniffer": "^3.5"
+        "squizlabs/php_codesniffer": "^3.5",
+        "phpunit/phpunit": "^9.0"
     }
 }
diff --git a/phpcs.xml.dist b/phpcs.xml.dist
index 0fe8bf8..936068c 100644
--- a/phpcs.xml.dist
+++ b/phpcs.xml.dist
@@ -3,6 +3,7 @@
     <description>This project coding standard</description>
 
     <file>Classes/</file>
+    <file>Tests/</file>
 
     <!-- Set default settings -->
     <arg value="sp"/>
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..4ae4c2d
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,26 @@
+<phpunit
+    backupGlobals="false"
+    backupStaticAttributes="false"
+    colors="true"
+    convertErrorsToExceptions="false"
+    convertWarningsToExceptions="false"
+    forceCoversAnnotation="false"
+    processIsolation="false"
+    stopOnError="false"
+    stopOnFailure="false"
+    stopOnIncomplete="false"
+    stopOnSkipped="false"
+    verbose="false">
+
+    <testsuites>
+        <testsuite name="unit-tests">
+            <directory>Tests/Unit/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory suffix=".php">Classes</directory>
+        </whitelist>
+    </filter>
+</phpunit>