diff --git a/.gitignore b/.gitignore
index 9f604ac0..f312b22f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,5 +11,4 @@ Build/.phpunit.cache
 var/
 vendor/
 
-phpunit.coverage.xml
-phpunit.report.xml
+coverage_result/
diff --git a/Build/UnitTests.xml b/Build/UnitTests.xml
deleted file mode 100644
index e4d37172..00000000
--- a/Build/UnitTests.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="true" bootstrap="../vendor/typo3/testing-framework/Resources/Core/Build/UnitTestsBootstrap.php" colors="true" processIsolation="false" stopOnError="false" stopOnFailure="false" stopOnIncomplete="false" stopOnSkipped="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd" cacheDirectory=".phpunit.cache" backupStaticProperties="false" requireCoverageMetadata="false">
-  <testsuites>
-    <testsuite name="Cart Events Extension">
-      <directory>../Tests/Unit/</directory>
-    </testsuite>
-  </testsuites>
-  <source>
-    <include>
-      <directory suffix=".php">../Classes/</directory>
-    </include>
-  </source>
-</phpunit>
diff --git a/Build/FunctionalTests.xml b/Build/phpunit.xml.dist
similarity index 85%
rename from Build/FunctionalTests.xml
rename to Build/phpunit.xml.dist
index 48bfce61..36e947ad 100644
--- a/Build/FunctionalTests.xml
+++ b/Build/phpunit.xml.dist
@@ -2,9 +2,12 @@
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="true" bootstrap="../vendor/typo3/testing-framework/Resources/Core/Build/FunctionalTestsBootstrap.php" colors="true" stopOnError="false" stopOnFailure="false" stopOnIncomplete="false" stopOnSkipped="false" beStrictAboutTestsThatDoNotTestAnything="false" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.1/phpunit.xsd" cacheDirectory=".phpunit.cache" requireCoverageMetadata="false">
   <coverage/>
   <testsuites>
-    <testsuite name="Cart Events Extension">
+    <testsuite name="functional">
       <directory>../Tests/Functional/</directory>
     </testsuite>
+    <testsuite name="unit">
+      <directory>../Tests/Unit/</directory>
+    </testsuite>
   </testsuites>
   <source>
     <include>
diff --git a/Classes/Domain/Model/EventDate.php b/Classes/Domain/Model/EventDate.php
index 1cb6bc36..e0673647 100644
--- a/Classes/Domain/Model/EventDate.php
+++ b/Classes/Domain/Model/EventDate.php
@@ -403,10 +403,7 @@ public function isAvailable(): bool
         if (!$this->isHandleSeats()) {
             return true;
         }
-        if ($this->getSeatsAvailable()) {
-            return true;
-        }
 
-        return false;
+        return $this->getSeatsAvailable() > 0;
     }
 }
diff --git a/Tests/Unit/Domain/Model/EventDateTest.php b/Tests/Unit/Domain/Model/EventDateTest.php
index 76e78605..3a95d764 100644
--- a/Tests/Unit/Domain/Model/EventDateTest.php
+++ b/Tests/Unit/Domain/Model/EventDateTest.php
@@ -117,4 +117,282 @@ public function setLecturerSetsLecturer(): void
             $this->eventDate->getLecturer()
         );
     }
+
+    #[Test]
+    public function isBookableReturnsInitialValueForBookable(): void
+    {
+        self::assertFalse(
+            $this->eventDate->isBookable()
+        );
+    }
+
+    #[Test]
+    public function setBookableSetsBookable(): void
+    {
+        $this->eventDate->setBookable(true);
+
+        self::assertTrue(
+            $this->eventDate->isBookable()
+        );
+    }
+
+    #[Test]
+    public function isPriceCategorizedReturnsInitialValueForPriceCategorized(): void
+    {
+        self::assertFalse(
+            $this->eventDate->isPriceCategorized()
+        );
+    }
+
+    #[Test]
+    public function setPriceCategorizedSetsPriceCategorized(): void
+    {
+        $this->eventDate->setPriceCategorized(true);
+
+        self::assertTrue(
+            $this->eventDate->isPriceCategorized()
+        );
+    }
+
+    #[Test]
+    public function isHandleSeatsReturnsInitialValueForHandleSeats(): void
+    {
+        self::assertFalse(
+            $this->eventDate->isHandleSeats()
+        );
+    }
+
+    #[Test]
+    public function setHandleSeatsSetsHandleSeats(): void
+    {
+        $this->eventDate->setHandleSeats(true);
+
+        self::assertTrue(
+            $this->eventDate->isHandleSeats()
+        );
+    }
+
+    #[Test]
+    public function isHandleSeatsInPriceCategoryReturnsInitialValueForHandleSeatsInPriceCategory(): void
+    {
+        self::assertFalse(
+            $this->eventDate->isHandleSeatsInPriceCategory()
+        );
+    }
+
+    #[Test]
+    public function setHandleSeatsInPriceCategorySetsHandleSeatsInPriceCategory(): void
+    {
+        $this->eventDate->setHandleSeatsInPriceCategory(true);
+
+        self::assertTrue(
+            $this->eventDate->isHandleSeatsInPriceCategory()
+        );
+    }
+
+    #[Test]
+    public function getSeatsNumberReturnsZeroIfHandleSeatsIsFalse()
+    {
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsNumber()
+        );
+
+        $this->eventDate->setSeatsNumber(15);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsNumber()
+        );
+    }
+
+    #[Test]
+    public function getSeatsNumberReturnsInitialValueForSeatsNumberIfHandleSeatsIsTrue()
+    {
+        $this->eventDate->setHandleSeats(true);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsNumber()
+        );
+    }
+
+    #[Test]
+    public function setSeatsNumberSetsSeatsNumber()
+    {
+        $this->eventDate->setSeatsNumber(15);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsNumber()
+        );
+
+        $this->eventDate->setHandleSeats(true);
+
+        self::assertSame(
+            15,
+            $this->eventDate->getSeatsNumber()
+        );
+    }
+
+    #[Test]
+    public function getSeatsTakenReturnsZeroIfHandleSeatsIsFalse()
+    {
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsTaken()
+        );
+
+        $this->eventDate->setSeatsTaken(15);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsTaken()
+        );
+    }
+
+    #[Test]
+    public function getSeatsTakenReturnsInitialValueForSeatsTakenIfHandleSeatsIsTrue()
+    {
+        $this->eventDate->setHandleSeats(true);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsTaken()
+        );
+    }
+
+    #[Test]
+    public function setSeatsTakenSetsSeatsTaken()
+    {
+        $this->eventDate->setSeatsTaken(15);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsTaken()
+        );
+
+        $this->eventDate->setHandleSeats(true);
+
+        self::assertSame(
+            15,
+            $this->eventDate->getSeatsTaken()
+        );
+    }
+
+    #[Test]
+    public function getSeatsAvailableReturnsZeroIfHandleSeatsIsFalse()
+    {
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsAvailable()
+        );
+
+        $this->eventDate->setSeatsNumber(15);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsAvailable()
+        );
+    }
+
+    #[Test]
+    public function getSeatsAvailableReturnsDifferenceOfInitialValueForSeatsNumberAndSeatsTakenIfHandleSeatsIsTrue()
+    {
+        $this->eventDate->setHandleSeats(true);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsAvailable()
+        );
+    }
+
+    #[Test]
+    public function getSeatsAvailableDifferenceOfValueForSeatsNumberAndSeatsTakenIfHandleSeatsIsTrue()
+    {
+        $this->eventDate->setSeatsNumber(30);
+        $this->eventDate->setSeatsTaken(13);
+
+        self::assertSame(
+            0,
+            $this->eventDate->getSeatsAvailable()
+        );
+
+        $this->eventDate->setHandleSeats(true);
+
+        self::assertSame(
+            17,
+            $this->eventDate->getSeatsAvailable()
+        );
+    }
+
+    #[TEST]
+    public function isAvailableReturnsFalseIfBookableIsFalse()
+    {
+        $this->eventDate->setHandleSeats(true);
+        $this->eventDate->setSeatsNumber(20);
+        $this->eventDate->setBookable(false);
+
+        self::assertFalse(
+            $this->eventDate->isAvailable()
+        );
+
+        $this->eventDate->setBookable(true);
+
+        self::assertTrue(
+            $this->eventDate->isAvailable()
+        );
+    }
+
+    #[TEST]
+    public function isAvailableReturnsTrueIfIsBookableAndHandleSeatsIsFalse()
+    {
+        $this->eventDate->setBookable(true);
+        $this->eventDate->setHandleSeats(false);
+        self::assertTrue(
+            $this->eventDate->isAvailable()
+        );
+
+        $this->eventDate->setHandleSeats(true);
+        self::assertFalse(
+            $this->eventDate->isAvailable()
+        );
+    }
+
+    #[TEST]
+    public function isAvailableReturnsTrueIfIsBookableAndHandleSeatsIsTrueAndNumberOfSeatsIsGreaterThanZero()
+    {
+        $this->eventDate->setBookable(true);
+        $this->eventDate->setHandleSeats(true);
+        $this->eventDate->setSeatsNumber(2);
+        self::assertTrue(
+            $this->eventDate->isAvailable()
+        );
+
+        $this->eventDate->setSeatsTaken(1);
+        self::assertTrue(
+            $this->eventDate->isAvailable()
+        );
+
+        $this->eventDate->setSeatsTaken(2);
+        self::assertFalse(
+            $this->eventDate->isAvailable()
+        );
+    }
+
+    #[TEST]
+    public function isAvailableReturnsFalseIfIsBookableAndHandleSeatsIsTrueAndNumberOfSeatsIsLowerOrEqualToZero()
+    {
+        $this->eventDate->setBookable(true);
+        $this->eventDate->setHandleSeats(true);
+        $this->eventDate->setSeatsNumber(0);
+        self::assertFalse(
+            $this->eventDate->isAvailable()
+        );
+
+        $this->eventDate->setSeatsTaken(1);
+        self::assertFalse(
+            $this->eventDate->isAvailable()
+        );
+    }
 }
diff --git a/shell.nix b/shell.nix
index 04c06ea0..ee36123b 100644
--- a/shell.nix
+++ b/shell.nix
@@ -90,7 +90,7 @@ let
     ];
     text = ''
       project-install
-      ./vendor/bin/phpunit -c Build/UnitTests.xml
+      ./vendor/bin/phpunit -c Build/phpunit.xml.dist --testsuite unit --display-warnings --display-deprecations --display-errors
     '';
   };
 
@@ -102,7 +102,19 @@ let
     ];
     text = ''
       project-install
-      ./vendor/bin/phpunit -c Build/FunctionalTests.xml
+      ./vendor/bin/phpunit -c Build/phpunit.xml.dist --testsuite functional --display-warnings --display-deprecations --display-errors
+    '';
+  };
+
+  projectTestWithCoverage = pkgs.writeShellApplication {
+    name = "project-test-with-coverage";
+    runtimeInputs = [
+      php
+      projectInstall
+    ];
+    text = ''
+      project-install
+      XDEBUG_MODE=coverage ./vendor/bin/phpunit -c Build/phpunit.xml.dist --coverage-html=coverage_result
     '';
   };
 
@@ -145,6 +157,7 @@ in pkgs.mkShellNoCC {
     projectPhpstan
     projectTestUnit
     projectTestFunctional
+    projectTestWithCoverage
     projectTestAcceptance
   ];