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[google_maps_flutter] add tests for clustermanager updates.
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‎packages/google_maps_flutter/google_maps_flutter/test/clustermanager_updates_test.dart

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// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:google_maps_flutter/google_maps_flutter.dart';
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import 'package:google_maps_flutter_platform_interface/google_maps_flutter_platform_interface.dart';
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import 'fake_google_maps_flutter_platform.dart';
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Widget _mapWithClusterManagers(Set<ClusterManager> clusterManagers) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: GoogleMap(
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initialCameraPosition: const CameraPosition(target: LatLng(10.0, 15.0)),
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clusterManagers: clusterManagers,
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),
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);
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}
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void main() {
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late FakeGoogleMapsFlutterPlatform platform;
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setUp(() {
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platform = FakeGoogleMapsFlutterPlatform();
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GoogleMapsFlutterPlatform.instance = platform;
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});
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testWidgets('Initializing a cluster manager', (WidgetTester tester) async {
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const ClusterManager cm1 = ClusterManager(
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clusterManagerId: ClusterManagerId('cm_1'),
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);
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await tester.pumpWidget(_mapWithClusterManagers(<ClusterManager>{cm1}));
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final PlatformMapStateRecorder map = platform.lastCreatedMap;
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expect(map.clusterManagerUpdates.last.clusterManagersToAdd.length, 1);
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final ClusterManager initializedHeatmap =
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map.clusterManagerUpdates.last.clusterManagersToAdd.first;
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expect(initializedHeatmap, equals(cm1));
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expect(
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map.clusterManagerUpdates.last.clusterManagerIdsToRemove.isEmpty, true);
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expect(
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map.clusterManagerUpdates.last.clusterManagersToChange.isEmpty, true);
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});
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testWidgets('Adding a cluster manager', (WidgetTester tester) async {
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const ClusterManager cm1 = ClusterManager(
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clusterManagerId: ClusterManagerId('cm_1'),
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);
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const ClusterManager cm2 = ClusterManager(
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clusterManagerId: ClusterManagerId('cm_2'),
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);
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await tester.pumpWidget(_mapWithClusterManagers(<ClusterManager>{cm1}));
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await tester
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.pumpWidget(_mapWithClusterManagers(<ClusterManager>{cm1, cm2}));
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final PlatformMapStateRecorder map = platform.lastCreatedMap;
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expect(map.clusterManagerUpdates.last.clusterManagersToAdd.length, 1);
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final ClusterManager addedClusterManager =
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map.clusterManagerUpdates.last.clusterManagersToAdd.first;
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expect(addedClusterManager, equals(cm2));
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expect(
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map.clusterManagerUpdates.last.clusterManagerIdsToRemove.isEmpty, true);
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expect(
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map.clusterManagerUpdates.last.clusterManagersToChange.isEmpty, true);
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});
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testWidgets('Removing a cluster manager', (WidgetTester tester) async {
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const ClusterManager cm1 = ClusterManager(
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clusterManagerId: ClusterManagerId('cm_1'),
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);
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await tester.pumpWidget(_mapWithClusterManagers(<ClusterManager>{cm1}));
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await tester.pumpWidget(_mapWithClusterManagers(<ClusterManager>{}));
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final PlatformMapStateRecorder map = platform.lastCreatedMap;
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expect(map.clusterManagerUpdates.last.clusterManagerIdsToRemove.length, 1);
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expect(map.clusterManagerUpdates.last.clusterManagerIdsToRemove.first,
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equals(cm1.clusterManagerId));
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expect(
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map.clusterManagerUpdates.last.clusterManagersToChange.isEmpty, true);
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expect(map.clusterManagerUpdates.last.clusterManagersToAdd.isEmpty, true);
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});
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// This test checks that the cluster manager is not added again or changed
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// when the data remains the same. Since [ClusterManager] does not have any
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// properties to change, it should not trigger any updates. If new properties
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// are added to [ClusterManager] in the future, this test will need to be
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// updated accordingly to check that changes are triggered.
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testWidgets('Updating a cluster manager with same data',
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(WidgetTester tester) async {
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const ClusterManager cm1 = ClusterManager(
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clusterManagerId: ClusterManagerId('cm_1'),
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);
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const ClusterManager cm2 = ClusterManager(
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clusterManagerId: ClusterManagerId('cm_1'),
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);
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await tester.pumpWidget(_mapWithClusterManagers(<ClusterManager>{cm1}));
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await tester.pumpWidget(_mapWithClusterManagers(<ClusterManager>{cm2}));
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final PlatformMapStateRecorder map = platform.lastCreatedMap;
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// As cluster manager does not have any properties to change,
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// it should not populate the clusterManagersToChange set.
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expect(
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map.clusterManagerUpdates.last.clusterManagersToChange.isEmpty, true);
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expect(
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map.clusterManagerUpdates.last.clusterManagerIdsToRemove.isEmpty, true);
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expect(map.clusterManagerUpdates.last.clusterManagersToAdd.isEmpty, true);
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});
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// This test checks that the cluster manager is not added again or changed
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// when the data remains the same. Since [ClusterManager] does not have any
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// properties to change, it should not trigger any updates. If new properties
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// are added to [ClusterManager] in the future, this test will need to be
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// updated accordingly to check that changes are triggered.
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testWidgets('Multi update with same data', (WidgetTester tester) async {
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ClusterManager cm1 = const ClusterManager(
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clusterManagerId: ClusterManagerId('cm_1'),
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);
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ClusterManager cm2 = const ClusterManager(
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clusterManagerId: ClusterManagerId('cm_2'),
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);
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final Set<ClusterManager> prev = <ClusterManager>{cm1, cm2};
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cm1 = const ClusterManager(
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clusterManagerId: ClusterManagerId('cm_1'),
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);
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cm2 = const ClusterManager(
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clusterManagerId: ClusterManagerId('cm_2'),
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);
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final Set<ClusterManager> cur = <ClusterManager>{cm1, cm2};
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await tester.pumpWidget(_mapWithClusterManagers(prev));
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await tester.pumpWidget(_mapWithClusterManagers(cur));
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final PlatformMapStateRecorder map = platform.lastCreatedMap;
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// As cluster manager does not have any properties to change,
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// it should not populate the clusterManagersToChange set.
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expect(map.clusterManagerUpdates.last.clusterManagersToAdd.isEmpty, true);
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expect(
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map.clusterManagerUpdates.last.clusterManagerIdsToRemove.isEmpty, true);
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expect(map.clusterManagerUpdates.last.clusterManagersToAdd.isEmpty, true);
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});
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// This test checks that the cluster manager is not added again or changed
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// when the data remains the same. Since [ClusterManager] does not have any
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// properties to change, it should not trigger any updates. If new properties
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// are added to [ClusterManager] in the future, this test will need to be
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// updated accordingly to check that changes are triggered.
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testWidgets('Partial update with same data', (WidgetTester tester) async {
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const ClusterManager cm1 = ClusterManager(
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clusterManagerId: ClusterManagerId('heatmap_1'),
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);
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const ClusterManager cm2 = ClusterManager(
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clusterManagerId: ClusterManagerId('heatmap_2'),
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);
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ClusterManager cm3 = const ClusterManager(
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clusterManagerId: ClusterManagerId('heatmap_3'),
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);
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final Set<ClusterManager> prev = <ClusterManager>{cm1, cm2, cm3};
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cm3 = const ClusterManager(
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clusterManagerId: ClusterManagerId('heatmap_3'),
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);
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final Set<ClusterManager> cur = <ClusterManager>{cm1, cm2, cm3};
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await tester.pumpWidget(_mapWithClusterManagers(prev));
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await tester.pumpWidget(_mapWithClusterManagers(cur));
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final PlatformMapStateRecorder map = platform.lastCreatedMap;
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// As cluster manager does not have any properties to change,
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// it should not populate the clusterManagersToChange set.
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expect(
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map.clusterManagerUpdates.last.clusterManagersToChange.isEmpty, true);
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expect(
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map.clusterManagerUpdates.last.clusterManagerIdsToRemove.isEmpty, true);
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expect(map.clusterManagerUpdates.last.clusterManagersToAdd.isEmpty, true);
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});
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}

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