Compass app (#2446)

compass_app/app/test/utils/command_test.dart

@@ -0,0 +1,102 @@
+// Copyright 2024 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:compass_app/utils/command.dart';
+import 'package:compass_app/utils/result.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('Command0 tests', () {
+    test('should complete void command', () async {
+      // Void action
+      final command = Command0<void>(() => Future.value(Result.ok(null)));
+
+      // Run void action
+      await command.execute();
+
+      // Action completed
+      expect(command.completed, true);
+    });
+
+    test('should complete bool command', () async {
+      // Action that returns bool
+      final command = Command0<bool>(() => Future.value(Result.ok(true)));
+
+      // Run action with result
+      await command.execute();
+
+      // Action completed
+      expect(command.completed, true);
+      expect(command.result!.asOk.value, true);
+    });
+
+    test('running should be true', () async {
+      final command = Command0<void>(() => Future.value(Result.ok(null)));
+      final future = command.execute();
+
+      // Action is running
+      expect(command.running, true);
+
+      // Await execution
+      await future;
+
+      // Action finished running
+      expect(command.running, false);
+    });
+
+    test('should only run once', () async {
+      int count = 0;
+      final command = Command0<int>(() => Future.value(Result.ok(count++)));
+      final future = command.execute();
+
+      // Run multiple times
+      command.execute();
+      command.execute();
+      command.execute();
+      command.execute();
+
+      // Await execution
+      await future;
+
+      // Action is called once
+      expect(count, 1);
+    });
+
+    test('should handle errors', () async {
+      final command =
+          Command0<int>(() => Future.value(Result.error(Exception('ERROR!'))));
+      await command.execute();
+      expect(command.error, true);
+      expect(command.result, isA<Error>());
+    });
+  });
+
+  group('Command1 tests', () {
+    test('should complete void command, bool argument', () async {
+      // Void action with bool argument
+      final command = Command1<void, bool>((a) {
+        expect(a, true);
+        return Future.value(Result.ok(null));
+      });
+
+      // Run void action, ignore void return
+      await command.execute(true);
+
+      expect(command.completed, true);
+    });
+
+    test('should complete bool command, bool argument', () async {
+      // Action that returns bool argument
+      final command =
+          Command1<bool, bool>((a) => Future.value(Result.ok(true)));
+
+      // Run action with result and argument
+      await command.execute(true);
+
+      // Argument was passed to onComplete
+      expect(command.completed, true);
+      expect(command.result!.asOk.value, true);
+    });
+  });
+}