Add adb forward list to adb wrapper

packages/adb/lib/src/adb.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:convert';
 import 'dart:io' as io;
 
 import 'package:adb/adb.dart';
@@ -161,6 +162,25 @@ class Adb {
     };
   }
 
+  /// Returns a parsed result of `adb forward --list` command.
+  Future<AdbForwardList> getForwardedPorts() async {
+    await _adbInternals.ensureServerRunning();
+
+    final output = await io.Process.run(
+      'adb',
+      ['forward', '--list'],
+      runInShell: true,
+    );
+
+    if (output.stdErr.isNotEmpty) {
+      _handleAdbExceptions(output.stdErr);
+
+      throw Exception(output.stdErr);
+    }
+
+    return AdbForwardList.parse(output.stdout as String);
+  }
+
   /// Runs instrumentation test specified by [packageName] and [intentClass] on
   /// the attached device.
   ///
@@ -243,3 +263,29 @@ class Adb {
     }
   }
 }
+
+/// Represents a parsed result of adb forward --list command.
+extension type AdbForwardList._(Map<String, Map<int, int>> map) {
+  /// Parses the output of `adb forward --list` command into a map.
+  AdbForwardList.parse(String adbForwardOutput) : map = {} {
+    final nonEmptyLines = const LineSplitter()
+        .convert(adbForwardOutput)
+        .where((line) => line.isNotEmpty);
+    for (final line in nonEmptyLines) {
+      final parts = line.split(' ');
+      final device = parts[0];
+      final hostPort = int.parse(parts[1].split(':')[1]);
+      final devicePort = int.parse(parts[2].split(':')[1]);
+      if (map[device] case final deviceMap?) {
+        deviceMap[hostPort] = devicePort;
+      } else {
+        map[device] = {hostPort: devicePort};
+      }
+    }
+  }
+
+  /// Returns port mapping for a device with the specified id.
+  Map<int, int> getMappedPortsForDevice(String deviceId) {
+    return map[deviceId] ?? {};
+  }
+}

packages/adb/pubspec.yaml

@@ -5,7 +5,7 @@ repository: https://github.com/leancodepl/patrol/tree/master/packages/adb
 issue_tracker: https://github.com/leancodepl/patrol/issues?q=is%3Aopen+is%3Aissue+label%3A%22package%3A+adb%22
 
 environment:
-  sdk: '>=3.2.0 <4.0.0'
+  sdk: '>=3.3.0-0 <4.0.0'
 
 dev_dependencies:
   custom_lint: ^0.6.4

packages/adb/test/adb_forward_list_test.dart

@@ -0,0 +1,39 @@
+import 'package:adb/adb.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group(
+    'AdbForwardList',
+    () {
+      test('returns an empty map if adb forward --list output is empty', () {
+        const output = '''
+
+''';
+        expect(AdbForwardList.parse(output), <String, Map<int, int>>{});
+      });
+
+      test('parses adb forward --list output correctly', () {
+        const output = '''
+emulator-5554 tcp:60000 tcp:60001
+emulator-5554 tcp:61234 tcp:61235
+emulator-5556 tcp:61341 tcp:62562
+
+''';
+
+        final result = AdbForwardList.parse(output);
+        expect(
+          result,
+          {
+            'emulator-5554': {
+              60000: 60001,
+              61234: 61235,
+            },
+            'emulator-5556': {
+              61341: 62562,
+            },
+          },
+        );
+      });
+    },
+  );
+}