Add test

app_dart/lib/src/model/appengine/agent.dart

@@ -19,7 +19,7 @@ class Agent extends Model {
     this.agentId,
     this.healthCheckTimestamp,
     this.isHealthy,
-    this.isHidden,
+    this.isHidden = false,
     this.capabilities,
     this.healthDetails,
     this.authToken,

app_dart/test/request_handlers/get_status_test.dart

@@ -0,0 +1,82 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:convert';
+import 'dart:typed_data';
+
+import 'package:cocoon_service/src/model/appengine/agent.dart';
+import 'package:cocoon_service/src/request_handlers/get_status.dart';
+import 'package:cocoon_service/src/request_handling/body.dart';
+import 'package:cocoon_service/src/service/build_status_provider.dart';
+import 'package:cocoon_service/src/service/datastore.dart';
+import 'package:test/test.dart';
+
+import '../src/datastore/fake_cocoon_config.dart';
+import '../src/datastore/fake_datastore.dart';
+import '../src/service/fake_build_status_provider.dart';
+
+void main() {
+  group('GetStatus', () {
+    FakeConfig config;
+    FakeDatastoreDB db;
+    FakeBuildStatusProvider buildStatusProvider;
+    GetStatus handler;
+
+    Future<Map<String, dynamic>> decodeHandlerBody() async {
+      final Body body = await handler.get();
+      final List<Uint8List> bytes = await body.serialize().toList();
+      final String decodedBody =
+          utf8.decode(bytes.expand((Uint8List bytes) => bytes).toList());
+      return json.decode(decodedBody);
+    }
+
+    setUp(() {
+      config = FakeConfig();
+      buildStatusProvider =
+          FakeBuildStatusProvider(commitStatuses: <CommitStatus>[]);
+      db = FakeDatastoreDB();
+      handler = GetStatus(
+        config,
+        datastoreProvider: () => DatastoreService(db: db),
+        buildStatusProvider: buildStatusProvider,
+      );
+    });
+
+    test('no statuses or agents', () async {
+      final Map<String, dynamic> result = await decodeHandlerBody();
+      expect(result['Statuses'], isEmpty);
+      expect(result['AgentStatuses'], isEmpty);
+    });
+
+    test('reports agents', () async {
+      final Agent linux1 = Agent(agentId: 'linux1');
+      final Agent mac1 = Agent(agentId: 'mac1');
+      final Agent linux100 = Agent(agentId: 'linux100');
+      final Agent linux5 = Agent(agentId: 'linux5');
+      final Agent windows1 = Agent(agentId: 'windows1', isHidden: true);
+
+      final List<Agent> reportedAgents = <Agent>[
+        linux1,
+        mac1,
+        linux100,
+        linux5,
+        windows1,
+      ];
+
+      db.addOnQuery<Agent>((Iterable<Agent> agents) => reportedAgents);
+      final Map<String, dynamic> result = await decodeHandlerBody();
+
+      expect(result['Statuses'], isEmpty);
+
+      final List<dynamic> expectedOrderedAgents = <dynamic>[
+        linux1.toJson(),
+        linux5.toJson(),
+        linux100.toJson(),
+        mac1.toJson(),
+      ];
+
+      expect(result['AgentStatuses'], equals(expectedOrderedAgents));
+    });
+  });
+}