diff --git a/pages/tests.py b/pages/tests.py
new file mode 100644
index 0000000..792e605
--- /dev/null
+++ b/pages/tests.py
@@ -0,0 +1,312 @@
+from django.test import TestCase, Client
+from django.core.exceptions import ValidationError
+from django.utils import timezone
+from datetime import date, timedelta
+from dokumente.models import Dokument, Vorgabe, VorgabeKurztext, VorgabeLangtext, Geltungsbereich, Dokumententyp, Thema
+from stichworte.models import Stichwort
+from unittest.mock import patch
+import re
+
+
+class SearchViewTest(TestCase):
+    def setUp(self):
+        self.client = Client()
+        
+        # Create test data
+        self.dokumententyp = Dokumententyp.objects.create(
+            name="Test Typ",
+            verantwortliche_ve="Test VE"
+        )
+        
+        self.thema = Thema.objects.create(
+            name="Test Thema",
+            erklaerung="Test Erklärung"
+        )
+        
+        self.dokument = Dokument.objects.create(
+            nummer="TEST-001",
+            dokumententyp=self.dokumententyp,
+            name="Test Dokument",
+            gueltigkeit_von=date.today(),
+            aktiv=True
+        )
+        
+        self.vorgabe = Vorgabe.objects.create(
+            order=1,
+            nummer=1,
+            dokument=self.dokument,
+            thema=self.thema,
+            titel="Test Vorgabe Titel",
+            gueltigkeit_von=date.today()
+        )
+        
+        # Create text content
+        self.kurztext = VorgabeKurztext.objects.create(
+            abschnitt=self.vorgabe,
+            inhalt="Dies ist ein Test Kurztext mit Suchbegriff"
+        )
+        
+        self.langtext = VorgabeLangtext.objects.create(
+            abschnitt=self.vorgabe,
+            inhalt="Dies ist ein Test Langtext mit anderem Suchbegriff"
+        )
+        
+        self.geltungsbereich = Geltungsbereich.objects.create(
+            geltungsbereich=self.dokument,
+            inhalt="Test Geltungsbereich mit Suchbegriff"
+        )
+    
+    def test_search_get_request(self):
+        """Test GET request returns search form"""
+        response = self.client.get('/search/')
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Suche')
+        self.assertContains(response, 'Suchbegriff')
+    
+    def test_search_post_valid_term(self):
+        """Test POST request with valid search term"""
+        response = self.client.post('/search/', {'q': 'Test'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Suchresultate für Test')
+    
+    def test_search_case_insensitive(self):
+        """Test that search is case insensitive"""
+        # Search for lowercase
+        response = self.client.post('/search/', {'q': 'test'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Suchresultate für test')
+        
+        # Search for uppercase
+        response = self.client.post('/search/', {'q': 'TEST'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Suchresultate für TEST')
+        
+        # Search for mixed case
+        response = self.client.post('/search/', {'q': 'TeSt'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Suchresultate für TeSt')
+    
+    def test_search_in_kurztext(self):
+        """Test search in Kurztext content"""
+        response = self.client.post('/search/', {'q': 'Suchbegriff'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'TEST-001')
+    
+    def test_search_in_langtext(self):
+        """Test search in Langtext content"""
+        response = self.client.post('/search/', {'q': 'anderem'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'TEST-001')
+    
+    def test_search_in_titel(self):
+        """Test search in Vorgabe title"""
+        response = self.client.post('/search/', {'q': 'Titel'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'TEST-001')
+    
+    def test_search_in_geltungsbereich(self):
+        """Test search in Geltungsbereich content"""
+        response = self.client.post('/search/', {'q': 'Geltungsbereich'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Standards mit')
+    
+    def test_search_no_results(self):
+        """Test search with no results"""
+        response = self.client.post('/search/', {'q': 'NichtVorhanden'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Keine Resultate für "NichtVorhanden"')
+    
+    def test_search_expired_vorgabe_not_included(self):
+        """Test that expired Vorgaben are not included in results"""
+        # Create expired Vorgabe
+        expired_vorgabe = Vorgabe.objects.create(
+            order=2,
+            nummer=2,
+            dokument=self.dokument,
+            thema=self.thema,
+            titel="Abgelaufene Vorgabe",
+            gueltigkeit_von=date.today() - timedelta(days=10),
+            gueltigkeit_bis=date.today() - timedelta(days=1)
+        )
+        
+        VorgabeKurztext.objects.create(
+            abschnitt=expired_vorgabe,
+            inhalt="Abgelaufener Inhalt mit Test"
+        )
+        
+        response = self.client.post('/search/', {'q': 'Test'})
+        self.assertEqual(response.status_code, 200)
+        
+        # Should only find the active Vorgabe, not the expired one
+        self.assertContains(response, 'Test Vorgabe Titel')
+        # The expired vorgabe should not appear in results
+        self.assertNotContains(response, 'Abgelaufene Vorgabe')
+    
+    def test_search_empty_term_validation(self):
+        """Test validation for empty search term"""
+        response = self.client.post('/search/', {'q': ''})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Fehler:')
+        self.assertContains(response, 'Suchbegriff darf nicht leer sein')
+    
+    def test_search_no_term_validation(self):
+        """Test validation when no search term is provided"""
+        response = self.client.post('/search/', {})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Fehler:')
+        self.assertContains(response, 'Suchbegriff darf nicht leer sein')
+    
+    def test_search_html_tags_stripped(self):
+        """Test that HTML tags are stripped from search input"""
+        response = self.client.post('/search/', {'q': '<script>alert("xss")</script>Test'})
+        self.assertEqual(response.status_code, 200)
+        # Should search for "alert('xss')Test" after HTML tag removal
+        self.assertContains(response, 'Suchresultate für alert(&quot;xss&quot;)Test')
+    
+    def test_search_invalid_characters_validation(self):
+        """Test validation for invalid characters"""
+        response = self.client.post('/search/', {'q': 'Test| DROP TABLE users'})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Fehler:')
+        self.assertContains(response, 'Ungültige Zeichen im Suchbegriff')
+    
+    def test_search_too_long_validation(self):
+        """Test validation for overly long search terms"""
+        long_term = 'a' * 201  # 201 characters, exceeds limit of 200
+        response = self.client.post('/search/', {'q': long_term})
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Fehler:')
+        self.assertContains(response, 'Suchbegriff ist zu lang')
+    
+    def test_search_max_length_allowed(self):
+        """Test that exactly 200 characters are allowed"""
+        max_term = 'a' * 200  # Exactly 200 characters
+        response = self.client.post('/search/', {'q': max_term})
+        self.assertEqual(response.status_code, 200)
+        # Should not show validation error
+        self.assertNotContains(response, 'Fehler:')
+    
+    def test_search_german_umlauts_allowed(self):
+        """Test that German umlauts are allowed in search"""
+        response = self.client.post('/search/', {'q': 'Test Müller äöü ÄÖÜ ß'})
+        self.assertEqual(response.status_code, 200)
+        # Should not show validation error
+        self.assertNotContains(response, 'Fehler:')
+    
+    def test_search_special_characters_allowed(self):
+        """Test that allowed special characters work"""
+        response = self.client.post('/search/', {'q': 'Test-Test, Test: Test; Test! Test? (Test) [Test] {Test} "Test" \'Test\''})
+        self.assertEqual(response.status_code, 200)
+        # Should not show validation error
+        self.assertNotContains(response, 'Fehler:')
+    
+    def test_search_input_preserved_on_error(self):
+        """Test that search input is preserved on validation errors"""
+        response = self.client.post('/search/', {'q': '<script>Test</script>'})
+        self.assertEqual(response.status_code, 200)
+        # The input should be preserved (escaped) in the form
+        # Since HTML tags are stripped, we expect "Test" to be searched
+        self.assertContains(response, 'Suchresultate für Test')
+    
+    def test_search_xss_prevention_in_results(self):
+        """Test that search terms are escaped in results to prevent XSS"""
+        # Create content with potential XSS
+        self.kurztext.inhalt = "Content with <script>alert('xss')</script> term"
+        self.kurztext.save()
+        
+        response = self.client.post('/search/', {'q': 'term'})
+        self.assertEqual(response.status_code, 200)
+        # The script tag should be escaped in the output
+        # Note: This depends on how the template renders the content
+        self.assertContains(response, 'Suchresultate für term')
+    
+    @patch('pages.views.pprint.pp')
+    def test_search_result_logging(self, mock_pprint):
+        """Test that search results are logged for debugging"""
+        response = self.client.post('/search/', {'q': 'Test'})
+        self.assertEqual(response.status_code, 200)
+        # Verify that pprint.pp was called with the result
+        mock_pprint.assert_called_once()
+    
+    def test_search_multiple_documents(self):
+        """Test search across multiple documents"""
+        # Create second document
+        dokument2 = Dokument.objects.create(
+            nummer="TEST-002",
+            dokumententyp=self.dokumententyp,
+            name="Zweites Test Dokument",
+            gueltigkeit_von=date.today(),
+            aktiv=True
+        )
+        
+        vorgabe2 = Vorgabe.objects.create(
+            order=1,
+            nummer=1,
+            dokument=dokument2,
+            thema=self.thema,
+            titel="Zweite Test Vorgabe",
+            gueltigkeit_von=date.today()
+        )
+        
+        VorgabeKurztext.objects.create(
+            abschnitt=vorgabe2,
+            inhalt="Zweiter Test Inhalt"
+        )
+        
+        response = self.client.post('/search/', {'q': 'Test'})
+        self.assertEqual(response.status_code, 200)
+        # Should find results from both documents
+        self.assertContains(response, 'TEST-001')
+        self.assertContains(response, 'TEST-002')
+
+
+class SearchValidationTest(TestCase):
+    """Test the validate_search_input function directly"""
+    
+    def test_validate_search_input_valid(self):
+        """Test valid search input"""
+        from pages.views import validate_search_input
+        
+        result = validate_search_input("Test Suchbegriff")
+        self.assertEqual(result, "Test Suchbegriff")
+    
+    def test_validate_search_input_empty(self):
+        """Test empty search input"""
+        from pages.views import validate_search_input
+        
+        with self.assertRaises(ValidationError) as context:
+            validate_search_input("")
+        
+        self.assertIn("Suchbegriff darf nicht leer sein", str(context.exception))
+    
+    def test_validate_search_input_html_stripped(self):
+        """Test that HTML tags are stripped"""
+        from pages.views import validate_search_input
+        
+        result = validate_search_input("<script>alert('xss')</script>Test")
+        self.assertEqual(result, "alert('xss')Test")
+    
+    def test_validate_search_input_invalid_chars(self):
+        """Test validation of invalid characters"""
+        from pages.views import validate_search_input
+        
+        with self.assertRaises(ValidationError) as context:
+            validate_search_input("Test| DROP TABLE users")
+        
+        self.assertIn("Ungültige Zeichen im Suchbegriff", str(context.exception))
+    
+    def test_validate_search_input_too_long(self):
+        """Test length validation"""
+        from pages.views import validate_search_input
+        
+        with self.assertRaises(ValidationError) as context:
+            validate_search_input("a" * 201)
+        
+        self.assertIn("Suchbegriff ist zu lang", str(context.exception))
+    
+    def test_validate_search_input_whitespace_stripped(self):
+        """Test that whitespace is stripped"""
+        from pages.views import validate_search_input
+        
+        result = validate_search_input("  Test Suchbegriff  ")
+        self.assertEqual(result, "Test Suchbegriff")
\ No newline at end of file
diff --git a/pages/views.py b/pages/views.py
index 3f25eba..8ab5fa4 100644
--- a/pages/views.py
+++ b/pages/views.py
@@ -23,7 +23,7 @@ def validate_search_input(search_term):
     search_term = re.sub(r'<[^>]*>', '', search_term)
     
     # Allow only alphanumeric characters, spaces, and basic punctuation
-    # This prevents SQL injection and other malicious input
+    # This prevents SQL injection and other malicious input while allowing useful characters
     if not re.match(r'^[a-zA-Z0-9äöüÄÖÜß\s\-\.\,\:\;\!\?\(\)\[\]\{\}\"\']+$', search_term):
         raise ValidationError("Ungültige Zeichen im Suchbegriff")