diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 46b0011..bc59803 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -23,6 +23,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: PHP lint
@@ -44,6 +45,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
@@ -84,6 +86,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
@@ -117,6 +120,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "7.4"
 
       - name: Install xmllint
@@ -154,6 +158,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "7.4"
 
       - name: Get Composer Cache Directory
@@ -191,6 +196,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
@@ -232,6 +238,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
@@ -272,6 +279,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
@@ -322,6 +330,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
@@ -354,6 +363,44 @@ jobs:
           export typo3DatabasePassword="root"
           ./vendor/bin/phpunit --testdox
 
+  mutationtesting:
+    runs-on: ubuntu-latest
+    needs:
+      - tests-sqlite-TYPO3-v10
+    strategy:
+      matrix:
+        php-version:
+          - '7.4'
+        typo3-version:
+          - '^10.4'
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "${{ matrix.php-version }}"
+          coverage: pcov
+          ini-values: pcov.directory=Classes
+
+      - name: Get Composer Cache Directory
+        id: composer-cache
+        run: |
+            echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - uses: actions/cache@v1
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress --no-suggest
+
+      - name: Mutation Testing
+        run: ./vendor/bin/infection --show-mutations --min-msi=100 --min-covered-msi=100 --no-progress -j$(nproc)
+
   code-quality-TYPO3-v10:
     runs-on: ubuntu-latest
     needs:
@@ -370,6 +417,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
@@ -410,6 +458,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
+          coverage: none
           php-version: "${{ matrix.php-version }}"
 
       - name: Get Composer Cache Directory
diff --git a/Tests/Functional/Dashboard/Provider/PageviewsPerPageTest.php b/Tests/Functional/Dashboard/Provider/PageviewsPerPageTest.php
index bdec086..b0cad79 100644
--- a/Tests/Functional/Dashboard/Provider/PageviewsPerPageTest.php
+++ b/Tests/Functional/Dashboard/Provider/PageviewsPerPageTest.php
@@ -296,4 +296,37 @@ class PageviewsPerPageTest extends TestCase
         ], $result['labels']);
         static::assertCount(3, $result['datasets'][0]['data']);
     }
+
+    /**
+     * @test
+     */
+    public function shortensTitleBasedOnUserSettings(): void
+    {
+        $this->importDataSet('EXT:tracking/Tests/Functional/Fixtures/Pages.xml');
+        $this->importDataSet('EXT:tracking/Tests/Functional/Fixtures/BackendUserWithTitleLen.xml');
+        $this->setUpBackendUser(10);
+        $connection = $this->getConnectionPool()->getConnectionForTable('tx_tracking_pageview');
+        for ($i = 1; $i <= 10; $i++) {
+            $connection->insert('tx_tracking_pageview', [
+                'pid' => $i,
+                'crdate' => time(),
+            ]);
+        }
+
+        $subject = new PageviewsPerPage(
+            GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('tx_tracking_pageview'),
+            GeneralUtility::makeInstance(PageRepository::class)
+        );
+
+        $result = $subject->getChartData();
+        static::assertSame([
+            'Page...',
+            'Page...',
+            'Page...',
+            'Page...',
+            'Page...',
+            'Page...',
+        ], $result['labels']);
+        static::assertCount(6, $result['datasets'][0]['data']);
+    }
 }
diff --git a/Tests/Functional/Fixtures/BackendUserWithTitleLen.xml b/Tests/Functional/Fixtures/BackendUserWithTitleLen.xml
new file mode 100644
index 0000000..ed1b4fa
--- /dev/null
+++ b/Tests/Functional/Fixtures/BackendUserWithTitleLen.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<dataset>
+    <be_users>
+        <uid>10</uid>
+        <pid>0</pid>
+        <tstamp>1366642540</tstamp>
+        <username>admin</username>
+        <password>$1$tCrlLajZ$C0sikFQQ3SWaFAZ1Me0Z/1</password> <!-- password -->
+        <admin>1</admin>
+        <disable>0</disable>
+        <starttime>0</starttime>
+        <endtime>0</endtime>
+        <options>0</options>
+        <crdate>1366642540</crdate>
+        <cruser_id>0</cruser_id>
+        <workspace_perms>1</workspace_perms>
+        <deleted>0</deleted>
+        <TSconfig>NULL</TSconfig>
+        <lastlogin>1371033743</lastlogin>
+        <workspace_id>0</workspace_id>
+        <uc>a:1:{s:8:"titleLen";i:4;}</uc>
+    </be_users>
+</dataset>
diff --git a/Tests/Unit/Domain/Repository/PageviewTest.php b/Tests/Unit/Domain/Repository/PageviewTest.php
index 7b4f844..1d5a3a4 100644
--- a/Tests/Unit/Domain/Repository/PageviewTest.php
+++ b/Tests/Unit/Domain/Repository/PageviewTest.php
@@ -82,7 +82,7 @@ class PageviewTest extends TestCase
     /**
      * @test
      */
-    public function throwsExceptionIfModelToUodateHasNoUid(): void
+    public function throwsExceptionIfModelToUpdateHasNoUid(): void
     {
         $connection = $this->prophesize(Connection::class);
         $factory = $this->prophesize(Factory::class);
@@ -91,7 +91,9 @@ class PageviewTest extends TestCase
         $model->getUid()->willReturn(0);
 
         $subject = new Pageview($connection->reveal(), $factory->reveal());
+        $this->expectException(\InvalidArgumentException::class);
         $this->expectExceptionMessage('Can not update pageview if uid is 0.');
+        $this->expectExceptionCode(1585770573);
         $subject->update($model->reveal());
     }
 
diff --git a/composer.json b/composer.json
index 16a96f7..cbb3800 100644
--- a/composer.json
+++ b/composer.json
@@ -47,7 +47,8 @@
         "phpspec/prophecy-phpunit": "^2.0",
         "typo3/testing-framework": "^6.8.2",
         "saschaegerer/phpstan-typo3": "^0.13.1",
-        "symplify/easy-coding-standard": "^9.3"
+        "symplify/easy-coding-standard": "^9.3",
+        "infection/infection": "^0.23.0"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,
diff --git a/infection.json.dist b/infection.json.dist
new file mode 100644
index 0000000..f4dd0f2
--- /dev/null
+++ b/infection.json.dist
@@ -0,0 +1,24 @@
+{
+    "source": {
+        "directories": [
+            "Classes"
+        ]
+    },
+    "logs": {
+        "text": ".Build\/infection"
+    },
+    "mutators": {
+        "@default": true,
+        "CastArray": false,
+        "CastBool": false,
+        "CastFloat": false,
+        "CastInt": false,
+        "CastObject": false,
+        "CastString": false,
+        "MBString": {
+            "settings": {
+                "mb_stripos": false
+            }
+        }
+    }
+}
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 858b92f..f1bbdbe 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -8,6 +8,7 @@
     colors="true"
     convertErrorsToExceptions="true"
     convertWarningsToExceptions="true"
+    executionOrder="default"
     forceCoversAnnotation="false"
     processIsolation="false"
     stopOnError="false"