Add unit test for make outputArtifactPath

packages/flutter_app_packager/lib/src/api/make_config.dart

@@ -119,6 +119,10 @@ class MakeConfig {
     return _pubspec!;
   }
 
+  set pubspec(Pubspec pubspec) {
+    _pubspec = pubspec;
+  }
+
   Map<String, dynamic> toJson() {
     return {
       'isInstaller': isInstaller,

packages/flutter_app_packager/pubspec.yaml

@@ -21,3 +21,4 @@ dependencies:
 dev_dependencies:
   dependency_validator: ^3.0.0
   mostly_reasonable_lints: ^0.1.2
+  test: ^1.23.1

packages/flutter_app_packager/test/src/api/make_config_test.dart

@@ -0,0 +1,45 @@
+import 'dart:io';
+
+import 'package:flutter_app_packager/src/api/make_config.dart';
+import 'package:pub_semver/pub_semver.dart';
+import 'package:pubspec_parse/pubspec_parse.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group('MakeConfig', () {
+    test('#1', () {
+      final makeConfig = MakeConfig()
+        ..buildMode = 'release'
+        ..buildOutputDirectory = Directory('build')
+        ..buildOutputFiles = []
+        ..platform = 'android'
+        ..packageFormat = 'apk'
+        ..outputDirectory = Directory('dist/')
+        ..pubspec = Pubspec(
+          'test_app',
+          version: Version.parse('1.0.0'),
+        );
+      expect(
+        makeConfig.outputArtifactPath,
+        'dist/1.0.0/test_app-1.0.0-android.apk',
+      );
+    });
+    test('#2', () {
+      final makeConfig = MakeConfig()
+        ..buildMode = 'release'
+        ..buildOutputDirectory = Directory('build')
+        ..buildOutputFiles = []
+        ..platform = 'android'
+        ..packageFormat = 'apk'
+        ..outputDirectory = Directory('dist/')
+        ..pubspec = Pubspec(
+          'test_app',
+          version: Version.parse('1.0.0+1'),
+        );
+      expect(
+        makeConfig.outputArtifactPath,
+        'dist/1.0.0+1/test_app-1.0.0+1-android.apk',
+      );
+    });
+  });
+}