Add test for non-fediverse response

lib/services/fediverse_server_validator.dart

@@ -24,15 +24,12 @@ class FediverseServiceValidator {
       return Result.ok(data.isFediverse);
     }
 
-    final updateResult = await refreshServerData(domain);
-    return updateResult.andThenSuccess((sd) {
-      knownServers[sd.domainName] = sd;
-      return sd.isFediverse;
-    }).execErrorCast();
+    final serverData = await refreshServerData(domain);
+    knownServers[domain] = serverData;
+    return Result.ok(serverData.isFediverse);
   }
 
-  static FutureResult<ServerData, ExecError> refreshServerData(
-      String domainName) async {
+  static Future<ServerData> refreshServerData(String domainName) async {
     final uri = Uri.https(
       domainName,
       '/.well-known/nodeinfo',
@@ -42,25 +39,24 @@ class FediverseServiceValidator {
           return jsonDecode(page.data);
         })
         .andThenAsync(
-          (json) async => json is Map<String, dynamic>
-              ? Result.ok(json)
-              : Result.error('Unknown response type for well-know/nodeinfo'),
+          (json) async =>
+              json is Map<String, dynamic> ? Result.ok(json) : Result.error(''),
         )
         .andThenSuccessAsync((json) async => json['links'] ?? [])
         .andThenAsync(
           (nodeInfos) async => nodeInfos.isNotEmpty
               ? Result.ok(nodeInfos.last)
-              : Result.error('Unknown response type for well-know/nodeinfo'),
+              : Result.error(''),
         )
         .andThenAsync((nodeInfo) async {
           final rel = nodeInfo['rel']?.toString() ?? '';
           if (!rel.startsWith('http://nodeinfo.diaspora.software/ns/schema/')) {
-            return Result.error('Unknown response type for well-know/nodeinfo');
+            return Result.error('');
           }
 
           final nodeInfoUrl = Uri.tryParse(nodeInfo['href'] ?? '');
           if (nodeInfoUrl == null) {
-            return Result.error('Unknown response type for well-know/nodeinfo');
+            return Result.error('');
           }
           return await getUrl(nodeInfoUrl);
         })
@@ -81,6 +77,7 @@ class FediverseServiceValidator {
           );
         });
 
-    return result.execErrorCast();
+    return result.getValueOrElse(
+        () => ServerData(domainName: domainName, isFediverse: false));
   }
 }

test/fediverse_server_validator_test.dart

@@ -45,12 +45,17 @@ void main() {
   test('Test against Pleroma Server', () async {
     await testDomain('stereophonic.space', 'pleroma');
   });
+
+  test('Test against non-fediverse server', () async {
+    final result =
+        await FediverseServiceValidator.refreshServerData('myportal.social');
+    expect(result.isFediverse, equals(false));
+  });
 }
 
 Future<void> testDomain(String domain, String softwareName) async {
   final result = await FediverseServiceValidator.refreshServerData(domain);
-  expect(result.isSuccess, equals(true));
-  expect(result.value.isFediverse, equals(true));
-  expect(result.value.domainName, equals(domain));
-  expect(result.value.softwareName, equals(softwareName));
+  expect(result.isFediverse, equals(true));
+  expect(result.domainName, equals(domain));
+  expect(result.softwareName, equals(softwareName));
 }