diff --git a/tests/phpunit/Fixtures/composer.json b/tests/phpunit/Fixtures/composer.json
index 4350996..4b8563e 100644
--- a/tests/phpunit/Fixtures/composer.json
+++ b/tests/phpunit/Fixtures/composer.json
@@ -8,6 +8,10 @@
         }
     },
     "minimum-stability": "dev",
+    "require": {
+        "php": ">=8.2",
+        "monolog/monolog": "^2.0"
+    },
     "scripts": {
         "customize": [
             "YourOrg\\YourPackage\\CustomizeCommand"
diff --git a/tests/phpunit/Functional/CreateProjectTest.php b/tests/phpunit/Functional/CreateProjectTest.php
index c81bac5..1f84a09 100644
--- a/tests/phpunit/Functional/CreateProjectTest.php
+++ b/tests/phpunit/Functional/CreateProjectTest.php
@@ -22,6 +22,10 @@ public function testCreateProjectNoInstall(): void {
 
     $this->assertComposerCommandSuccessOutputContains('Welcome to yourorg/yourpackage project customizer');
     $this->assertComposerCommandSuccessOutputContains('Project was customized');
+
+    $this->assertFileExists('composer.json');
+    $this->assertFileDoesNotExist('composer.lock');
+    $this->assertDirectoryDoesNotExist('vendor');
   }
 
   public function testCreateProjectNoInstallCancel(): void {
@@ -33,6 +37,42 @@ public function testCreateProjectNoInstallCancel(): void {
 
     $this->assertComposerCommandSuccessOutputContains('Welcome to yourorg/yourpackage project customizer');
     $this->assertComposerCommandSuccessOutputContains('No changes were made.');
+
+    $this->assertFileExists('composer.json');
+    $this->assertFileDoesNotExist('composer.lock');
+    $this->assertDirectoryDoesNotExist('vendor');
+  }
+
+  public function testCreateProjectInstall(): void {
+    $this->customizerSetAnswers([
+      self::TUI_ANSWER_NOTHING,
+    ]);
+
+    $this->composerCreateProject();
+
+    $this->assertComposerCommandSuccessOutputContains('Welcome to yourorg/yourpackage project customizer');
+    $this->assertComposerCommandSuccessOutputContains('Project was customized');
+
+    $this->assertFileExists('composer.json');
+    $this->assertFileExists('composer.lock');
+    $this->assertDirectoryExists('vendor');
+    $this->assertDirectoryExists('vendor/monolog/monolog');
+  }
+
+  public function testCreateProjectInstallCancel(): void {
+    $this->customizerSetAnswers([
+      'no',
+    ]);
+
+    $this->composerCreateProject();
+
+    $this->assertComposerCommandSuccessOutputContains('Welcome to yourorg/yourpackage project customizer');
+    $this->assertComposerCommandSuccessOutputContains('No changes were made.');
+
+    $this->assertFileExists('composer.json');
+    $this->assertFileExists('composer.lock');
+    $this->assertDirectoryExists('vendor');
+    $this->assertDirectoryExists('vendor/monolog/monolog');
   }
 
 }
diff --git a/tests/phpunit/Functional/CustomizerTestCase.php b/tests/phpunit/Functional/CustomizerTestCase.php
index 687f17e..bba9070 100644
--- a/tests/phpunit/Functional/CustomizerTestCase.php
+++ b/tests/phpunit/Functional/CustomizerTestCase.php
@@ -108,6 +108,7 @@ protected function composerCreateProject(array $options = []): void {
     $defaults = [
       'command' => 'create-project',
       'package' => $this->packageName,
+      'directory' => $this->dirs->sut,
       'version' => '@dev',
       '--repository' => [
         json_encode([