cleanup and added unit tests

hartmann-foto-documentation-frontend/lib/pages/customer/customer_row_item.dart

@@ -1,40 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:fotodocumentation/dto/customer_dto.dart';
-import 'package:fotodocumentation/pages/ui_utils/dialog/delete_dialog.dart';
-
-class CustomerRowItem extends StatelessWidget {
-  final CustomerListDto dto;
-  final Future<DeleteDialogResult> Function(CustomerListDto) doDelete;
-  final Future<void> Function(CustomerListDto)? doSelect;
-
-  const CustomerRowItem({super.key, required this.dto, required this.doDelete, this.doSelect});
-
-  @override
-  Widget build(BuildContext context) {
-    return ListTile(
-      leading: CircleAvatar(
-        backgroundColor: Colors.grey[300],
-        child: Text(
-          dto.name.isNotEmpty ? dto.name[0].toUpperCase() : '?',
-          style: TextStyle(
-            color: Colors.grey[700],
-            fontWeight: FontWeight.bold,
-          ),
-        ),
-      ),
-      title: Text(dto.name),
-      subtitle: Text('CustomerNumber: ${dto.customerNumber}'),
-      
-      shape: RoundedRectangleBorder(
-        borderRadius: BorderRadius.circular(8),
-      ),
-      onTap: () async => await _doSelect(context),
-    );
-  }
-
-  Future<void> _doSelect(BuildContext context) async {
-    if (doSelect != null) {
-      await doSelect!(dto);
-    }
-  }
-}

hartmann-foto-documentation-frontend/lib/pages/customer/customer_widget.dart

@@ -2,6 +2,7 @@ import 'dart:convert' show base64Decode;
 
 import 'package:flutter/material.dart';
 import 'package:fotodocumentation/controller/picture_controller.dart';
+import 'package:fotodocumentation/dto/picture_dto.dart';
 import 'package:fotodocumentation/pages/customer/picture_delete_dialog.dart';
 
 import 'package:go_router/go_router.dart';
@@ -194,6 +195,7 @@ class _CustomerWidgetState extends State<CustomerWidget> {
 
     final dateStr = _dateFormat.format(pictureDto.pictureDate);
     return InkWell(
+      key: Key("table_row_${customerDto.id}"),
       onTap: () => _actionSelect(context, customerDto, pictureDto),
       child: Padding(
         padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
@@ -231,6 +233,7 @@ class _CustomerWidgetState extends State<CustomerWidget> {
             SizedBox(
               width: 48,
               child: IconButton(
+                key: Key("table_row_delete_${customerDto.id}"),
                 icon: Icon(
                   Icons.delete_outline,
                   color: _generalStyle.errorColor,

hartmann-foto-documentation-frontend/lib/pages/customer/picture_delete_dialog.dart

@@ -28,6 +28,7 @@ class PictureDeleteDialog extends StatelessWidget {
       ),
       actions: [
         TextButton(
+          key: Key("picture_delete_no"),
           onPressed: () => Navigator.of(context).pop(false),
           child: Text(
             AppLocalizations.of(context)!.deleteDialogButtonCancel,
@@ -38,6 +39,7 @@ class PictureDeleteDialog extends StatelessWidget {
           ),
         ),
         TextButton(
+          key: Key("picture_delete_yes"),
           onPressed: () => Navigator.of(context).pop(true),
           child: Text(
             AppLocalizations.of(context)!.deleteDialogButtonApprove,

hartmann-foto-documentation-frontend/lib/pages/customer/picture_fullscreen_dialog.dart

@@ -1,7 +1,7 @@
 import 'dart:convert' show base64Decode;
 
 import 'package:flutter/material.dart';
-import 'package:fotodocumentation/dto/customer_dto.dart';
+import 'package:fotodocumentation/dto/picture_dto.dart';
 import 'package:fotodocumentation/pages/ui_utils/general_style.dart';
 import 'package:fotodocumentation/utils/di_container.dart';
 

hartmann-foto-documentation-frontend/lib/pages/customer/picture_widget.dart

@@ -2,6 +2,7 @@ import 'dart:convert' show base64Decode;
 
 import 'package:flutter/material.dart';
 import 'package:fotodocumentation/dto/customer_dto.dart';
+import 'package:fotodocumentation/dto/picture_dto.dart';
 import 'package:fotodocumentation/pages/customer/picture_fullscreen_dialog.dart';
 import 'package:fotodocumentation/pages/ui_utils/general_style.dart';
 import 'package:fotodocumentation/utils/di_container.dart';
@@ -179,12 +180,17 @@ class _PictureWidgetState extends State<PictureWidget> {
 
   Widget _imageWidget(PictureDto dto) {
     return GestureDetector(
+      key: const Key("image"),
+      behavior: HitTestBehavior.opaque,
       onTap: () => _showFullscreenImage(dto),
       child: MouseRegion(
         cursor: SystemMouseCursors.click,
-        child: Image.memory(
-          base64Decode(dto.image),
-          fit: BoxFit.contain,
+        child: ConstrainedBox(
+          constraints: const BoxConstraints(minWidth: 100, minHeight: 100),
+          child: Image.memory(
+            base64Decode(dto.image),
+            fit: BoxFit.contain,
+          ),
         ),
       ),
     );
@@ -234,7 +240,7 @@ class _PictureWidgetState extends State<PictureWidget> {
       Padding(
         padding: const EdgeInsets.only(top: 4.0),
         child: Text(
-          dto.customerListDto.name,
+          widget.customerDto.name,
           style: contentStyle,
         ),
       ),
@@ -248,7 +254,7 @@ class _PictureWidgetState extends State<PictureWidget> {
       Padding(
         padding: const EdgeInsets.only(top: 4.0),
         child: Text(
-          dto.customerListDto.customerNumber,
+          widget.customerDto.customerNumber,
           style: contentStyle,
         ),
       ),