. t added tests for scrubbers

lib/src/core/comparator.dart

@@ -2,8 +2,6 @@ part of '../../approval_tests.dart';
 
 /// `Comparator` is an abstract class for comparing files.
 abstract interface class Comparator {
-  const Comparator();
-
   /// A method named `compare` for comparing two files.
   bool compare({
     required String approvedPath,

lib/src/reporters/diff_tool/diff_tools.dart

@@ -3,8 +3,7 @@ part of '../../../../approval_tests.dart';
 /// `MacDiffTools` contains diff tools available on macOS.
 final class MacDiffTools {
   static const DiffInfo visualStudioCode = DiffInfo(
-    command:
-        '/Applications/Visual Studio Code.app/Contents/Resources/app/bin/code',
+    command: '/Applications/Visual Studio Code.app/Contents/Resources/app/bin/code',
     arg: '-d',
   );
 
@@ -16,7 +15,6 @@ final class MacDiffTools {
 
 /// `WindowsDiffTools` contains diff tools available on Windows.
 final class WindowsDiffTools {
-  // TODO: check correct path for Visual Studio Code on Windows
   static const DiffInfo visualStudioCode = DiffInfo(
     command: 'C:\\Program Files\\Microsoft VS Code\\Code.exe',
     arg: '-d',

lib/src/scrubbers/date_scrubber.dart

@@ -3,16 +3,23 @@ part of '../../approval_tests.dart';
 /// A class named `ScrubDates` that extends `ScrubWithRegEx`.
 /// `ScrubDates` uses a regular expression to scrub date strings in a specific format.
 class ScrubDates extends ScrubWithRegEx {
-  static int _index = 0;
+  /// Constant pattern to match date strings
+  static const String _datePattern = r'\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+';
 
   /// Creates a `ScrubDates` instance with a predefined pattern to match date strings.
-  /// Replaces matched date strings with a placeholder containing a unique index.
-  ScrubDates()
-      : super.custom(
-          pattern: r'\d{4}-\d{1,2}-\d{1,2}T\d{1,2}:\d{2}:\d{2}Z',
-          replacementFunction: (match) {
-            _index++;
-            return '<date$_index>';
-          },
-        );
+  /// Replaces matched date strings with a fixed placeholder `<date>`.
+  const ScrubDates();
+
+  static int _index = 0;
+
+  @override
+  String scrub(String input) => input
+      .replacingOccurrences(
+        matchingPattern: _datePattern,
+        replacementProvider: (match) {
+          _index++;
+          return '<date$_index>';
+        },
+      )
+      .trim();
 }

test/approval_test.dart

@@ -18,6 +18,7 @@ void main() {
   const dbQuery = DatabaseRequestQuery("1");
   const lines25 = _Lines.lines25;
   const lines30 = _Lines.lines30;
+  final dateTime = DateTime(2021, 10, 10, 10, 10, 10);
 
   /// ================== Set up ==================
 
@@ -205,6 +206,26 @@ void main() {
         scrubber: const ScrubWithRegEx(),
       );
     });
+
+    test('Verify string with custom scrubber', () {
+      helper.verify(
+        '  Hello    World  \t\n ',
+        'verify_custom_scrub',
+        scrubber: ScrubWithRegEx.custom(
+          pattern: r'\s+',
+          replacementFunction: (match) => '-',
+        ),
+      );
+    });
+
+    test('Verify string with date scrubber', () {
+      helper.verifyAll(
+        [dateTime, DateTime.now()],
+        'verify_date_scrub',
+        scrubber: const ScrubDates(),
+        deleteReceivedFile: false,
+      );
+    });
   });
 
   /// ================== Tear down ==================

test/approved_files/approval_test.verify_custom_scrub.approved.txt

@@ -0,0 +1 @@
+-Hello-World-

test/approved_files/approval_test.verify_date_scrub.approved.txt

@@ -0,0 +1,2 @@
+<date1>
+<date2>

test/utils/helper.dart

@@ -45,21 +45,24 @@ class ApprovalTestHelper {
   }
 
   void verifyAll(
-    List<String> contents,
+    List<dynamic> contents,
     String testName, {
     bool expectException = false,
     bool approveResult = false,
     bool deleteReceivedFile = true,
+    ApprovalScrubber scrubber = const ScrubNothing(),
+    Reporter reporter = const CommandLineReporter(),
   }) {
     Approvals.verifyAll(
       contents,
-      processor: (item) =>
-          item, // Simple processor function that returns the item itself.
+      processor: (item) => item.toString(), // Simple processor function that returns the item itself.
       options: _getOptions(
         testName,
         expectException: expectException,
         approveResult: approveResult,
         deleteReceivedFile: deleteReceivedFile,
+        scrubber: scrubber,
+        reporter: reporter,
       ),
     );
   }
@@ -102,7 +105,7 @@ class ApprovalTestHelper {
   }
 
   void verifySequence(
-    List<int> sequence,
+    List<dynamic> sequence,
     String testName, {
     bool expectException = false,
     bool approveResult = false,