[test] notificationlistener plus nflistener regexp parser

some tests currently still fail - time to dig into it I guess :)

test/notificationlistener_test.dart

@@ -0,0 +1,222 @@
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart' show TestWidgetsFlutterBinding;
+import 'package:test/test.dart';
+
+import 'package:mockito/mockito.dart';
+
+import 'package:waterflyiii/notificationlistener.dart';
+
+class MockCallbackFunction extends Mock {
+  void call();
+}
+
+void main() {
+  group("NotificationTransaction", () {
+    late NotificationTransaction testTX;
+    setUp(() {
+      testTX = NotificationTransaction(
+        "debug.test.app",
+        "DEBUG TEST APP",
+        "DEBUG TEST BODY",
+        DateTime(2017, 9, 7, 17, 30, 15, 20, 25),
+      );
+    });
+
+    test("toJson", () {
+      expect(
+        testTX.toJson(),
+        <String, dynamic>{
+          "appName": "debug.test.app",
+          "title": "DEBUG TEST APP",
+          "body": "DEBUG TEST BODY",
+          "date": "2017-09-07T17:30:15.020025",
+        },
+      );
+    });
+    test("fromJson", () {
+      final NotificationTransaction testTXParse =
+          NotificationTransaction.fromJson(<String, dynamic>{
+        "appName": "debug.test.app",
+        "title": "DEBUG TEST APP",
+        "body": "DEBUG TEST BODY",
+        "date": "2017-09-07T17:30:15.020025",
+      });
+      expect(testTXParse.appName, "debug.test.app");
+      expect(testTXParse.title, "DEBUG TEST APP");
+      expect(testTXParse.body, "DEBUG TEST BODY");
+      expect(testTXParse.date, DateTime(2017, 9, 7, 17, 30, 15, 20, 25));
+    });
+  });
+
+  group("rFindMoney", () {
+    final List<String> testStrings = <String>[
+      // Generic Tests
+      "PRETEXT PRETEXT €12,34 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT €12.34 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT €1 230,44 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT €1.230,44 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT €1,230.44 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 12,34€ POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 12.34€ POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 1 230,44€ POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 1.230,44€ POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 1,230.44€ POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT € 12,34 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT € 12.34 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT € 1 230,44 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT € 1.230,44 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT € 1,230.44 POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 12,34 € POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 12.34 € POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 1 230,44 € POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 1.230,44 € POSTTEXT POSTTEXT",
+      "PRETEXT PRETEXT 1,230.44 € POSTTEXT POSTTEXT",
+
+      // Google Pay
+      "€12.34 with Card •••• 9876",
+      // AMEX
+      "Sie haben €12,34 bei Some Store mit Ihrer American Express Karte mit den Enziffern 98765 ausgegeben.",
+      // Raiffeisen UA, via mail May 01, 2023 - FAILS!
+      //"07.09.17 17:30 Credit Card Virtual*9876\nсплата за товар/послугу 9876.54 UAH LIQ-PAYDEMSOKIRA GO. Доступна сума: 12.34 UAH",
+      // Rabobank, via mail Jun 26, 2023
+      "€ 12,34 afgeschreven van *123. Jouw actuele saldo is € +987,65.",
+      // Wave, via mail Jul 01, 2023
+      "Vous avez envoyé 1.234F\nA Some Store (987654321)\n07/09/2017 à 17h30\nFrais 1234F\nNouveau solde: 9.876F\nAvec ABC\nABCDEFGHIJKL",
+      // Amazon Pay, via mail Aug 10, 2023
+      "Payment of Rs 12.34 using Amazon Pay Balance is successful at Amazon.in. Updated Balance: Rs 9876.54. For help/stmt: https://www.example.com/cstxn",
+      // Tangerine, via mail Jan 4, 2024
+      "A purchase of €12.34 made using your Tangerine Credit Card at Some Store on September 07, 2017",
+    ];
+
+    final List<String> validCurrencies = <String>["€", "F", "Rs", "UAH"];
+    final List<double> validAmounts = <double>[12.34, 123.4, 1234, 1230.44];
+    setUp(() {});
+    for (String s in testStrings) {
+      test(s, () {
+        RegExpMatch? validMatch;
+
+        final Iterable<RegExpMatch> matches = rFindMoney.allMatches(s);
+
+        expect(matches, isNotEmpty);
+        if (matches.isEmpty) {
+          return;
+        }
+        for (RegExpMatch match in matches) {
+          if ((match.namedGroup("postCurrency")?.isNotEmpty ?? false) ||
+              (match.namedGroup("preCurrency")?.isNotEmpty ?? false)) {
+            validMatch = match;
+            break;
+          }
+        }
+        expect(validMatch, isNotNull);
+        if (validMatch == null) {
+          return;
+        }
+        // extract currency
+        String currencyStr = validMatch.namedGroup("preCurrency") ?? "";
+        String currencyStrAlt = validMatch.namedGroup("postCurrency") ?? "";
+        if (currencyStr.isEmpty) {
+          currencyStr = currencyStrAlt;
+        }
+        expect(validCurrencies, contains(currencyStr));
+
+        // extract amount
+        late double amount;
+        final String amountStr =
+            (validMatch.namedGroup("amount") ?? "").replaceAll(" ", "");
+        final int decimalSepPos = amountStr.length >= 3 &&
+                (amountStr[amountStr.length - 3] == "." ||
+                    amountStr[amountStr.length - 3] == ",")
+            ? amountStr.length - 3
+            : amountStr.length - 2;
+        final String decimalSep =
+            amountStr.length >= decimalSepPos && decimalSepPos > 0
+                ? amountStr[decimalSepPos]
+                : "";
+        if (decimalSep == "," || decimalSep == ".") {
+          final double wholes = double.tryParse(amountStr
+                  .substring(0, decimalSepPos)
+                  .replaceAll(",", "")
+                  .replaceAll(".", "")) ??
+              0;
+          final String decStr = amountStr
+              .substring(decimalSepPos + 1)
+              .replaceAll(",", "")
+              .replaceAll(".", "");
+          final double dec = double.tryParse(decStr) ?? 0;
+          amount = decStr.length == 1 ? wholes + dec / 10 : wholes + dec / 100;
+        } else {
+          amount = double.tryParse(
+                  amountStr.replaceAll(",", "").replaceAll(".", "")) ??
+              0;
+        }
+        expect(validAmounts, contains(amount));
+      });
+    }
+  });
+
+  group("nlStatus", () {
+    late Function(bool, bool, bool) fn;
+    setUp(() {
+      fn = (bool enabled, bool permission, bool running) {
+        TestWidgetsFlutterBinding.instance.defaultBinaryMessenger
+            .setMockMethodCallHandler(
+          const MethodChannel('dexterous.com/flutter/local_notifications'),
+          (MethodCall methodCall) async {
+            if (methodCall.method == "areNotificationsEnabled") {
+              return enabled;
+            }
+            return false;
+          },
+        );
+        TestWidgetsFlutterBinding.instance.defaultBinaryMessenger
+            .setMockMethodCallHandler(
+          const MethodChannel(
+              'notifications_listener_service/RUN_NATIVE_FOREGROUND_METHOD'),
+          (MethodCall methodCall) async {
+            if (methodCall.method == "isExist") {
+              // Just a test if we're listening
+              return true;
+            }
+            if (methodCall.method == "isServiceRunning") {
+              return running;
+            }
+            if (methodCall.method == "isNotificationPermissionGranted") {
+              return permission;
+            }
+            return false;
+          },
+        );
+      };
+      TestWidgetsFlutterBinding.ensureInitialized();
+    });
+    test("status off", () async {
+      fn(false, false, false);
+      final NotificationListenerStatus status = await nlStatus();
+      expect(status.notificationPermission, false);
+      expect(status.servicePermission, false);
+      expect(status.serviceRunning, false);
+    });
+    test("+ notification permission", () async {
+      fn(true, false, false);
+      final NotificationListenerStatus status = await nlStatus();
+      expect(status.notificationPermission, true);
+      expect(status.servicePermission, false);
+      expect(status.serviceRunning, false);
+    });
+    test("+ service permission", () async {
+      fn(true, true, false);
+      final NotificationListenerStatus status = await nlStatus();
+      expect(status.notificationPermission, true);
+      expect(status.servicePermission, true);
+      expect(status.serviceRunning, false);
+    });
+    test("+ service running", () async {
+      fn(true, true, true);
+      final NotificationListenerStatus status = await nlStatus();
+      expect(status.notificationPermission, true);
+      expect(status.servicePermission, true);
+      expect(status.serviceRunning, true);
+    });
+  });
+}