ApiRequest | add tests

test/unit/api_client/request/api_request/api_request_socket_test.dart

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+import 'dart:convert';
+import 'dart:io';
+
+import 'package:ext_rw/ext_rw.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:hmi_core/hmi_core_result_new.dart';
+
+class FakeApiQueryType implements ApiQueryType {
+  final bool _valid;
+  final String _query;
+
+  FakeApiQueryType({
+    required bool valid,
+    required String query,
+  })  : _valid = valid,
+        _query = query;
+
+  @override
+  bool valid() => _valid;
+
+  @override
+  String buildJson({String authToken = '', bool debug = false}) => _query;
+
+  // insert directly into _query in fake implementation
+  @override
+  String get id => '';
+}
+
+void main() {
+  group('ApiRequest socket', () {
+    late ApiAddress address;
+    late ServerSocket serverSocket;
+    setUp(() async {
+      // bind socket server to unused port and start listening
+      serverSocket = await ServerSocket.bind(
+        InternetAddress.loopbackIPv4.host,
+        0,
+      );
+      // respond with received data
+      serverSocket.listen((socket) {
+        socket.listen((data) {
+          socket.add(data);
+        });
+      });
+      address = ApiAddress(
+        host: serverSocket.address.host,
+        port: serverSocket.port,
+      );
+    });
+    test('.fetch() with valid query', () async {
+      final queryList = [
+        '{"authToken": "testToken", "id": "testID", "query": "testQuery", "data": []}',
+        '{"authToken": "testToken", "id": "testID", "query": "testQuery", "data": [{"stringDataKey":"dataValue"}]}',
+        '{"authToken": "testToken", "id": "testID", "query": "testQuery", "data": [{"booleanDataKey":true}]}',
+        '{"authToken": "testToken", "id": "testID", "query": "testQuery", "data": [{"listDataKey":[1,"2",{"lik":"liv"},[]]}]}',
+      ];
+      for (final query in queryList) {
+        final apiRequest = ApiRequest(
+          address: address,
+          authToken: '+++',
+          query: FakeApiQueryType(
+            valid: true,
+            query: query,
+          ),
+        );
+        final result = await apiRequest.fetch();
+        expect(
+          result,
+          isA<Ok>(),
+          reason: 'valid api request should return Ok as Result',
+        );
+        if (result case Ok(value: final reply)) {
+          final replyAsJson = '{"authToken": "${reply.authToken}", "id": "${reply.id}", "query": "${reply.sql}", "data": ${json.encode(reply.data)}}';
+          expect(
+            replyAsJson,
+            query,
+            reason: 'data should be transferred correctly',
+          );
+        }
+      }
+    });
+    ///
+    test('.fetch() with invalid query', () async {
+      final queryList = [
+        '',
+      ];
+      for (final query in queryList) {
+        final apiRequest = ApiRequest(
+          address: address,
+          authToken: '+++',
+          query: FakeApiQueryType(
+            valid: false,
+            query: query,
+          ),
+        );
+        final result = await apiRequest.fetch();
+        expect(
+          result,
+          isA<Err>(),
+          reason: 'Api request with invalid query should return Err as Result',
+        );
+      }
+    });
+
+    tearDown(() async {
+      serverSocket.close();
+    });
+  });
+}