Replace http stubbing with an in-memory TileProvider in tests

This stops the following message from being spammed in tests which was caused by a problem with the http mocking: type 'Null' is not a subtype of type 'Future<HttpClientRequest>'
fleaflet · Jun 11, 2023 · 4c18441 · 4c18441
1 parent 164e3d3
commit 4c18441
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Showing 8 changed files with 14 additions and 78 deletions.
diff --git a/test/flutter_map_controller_test.dart b/test/flutter_map_controller_test.dart
@@ -2,12 +2,9 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:latlong2/latlong.dart';
 
-import 'test_utils/mocks.dart';
 import 'test_utils/test_app.dart';
 
 void main() {
-  setupMocks();
-
   testWidgets('test fit bounds methods', (tester) async {
     final controller = MapController();
     final bounds = LatLngBounds(

diff --git a/test/flutter_map_test.dart b/test/flutter_map_test.dart
@@ -3,12 +3,9 @@ import 'package:flutter_map/plugin_api.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:latlong2/latlong.dart';
 
-import 'test_utils/mocks.dart';
 import 'test_utils/test_app.dart';
 
 void main() {
-  setupMocks();
-
   testWidgets('flutter_map', (tester) async {
     final markers = <Marker>[
       Marker(

diff --git a/test/layer/circle_layer_test.dart b/test/layer/circle_layer_test.dart
@@ -3,12 +3,9 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:latlong2/latlong.dart';
 
-import '../test_utils/mocks.dart';
 import '../test_utils/test_app.dart';
 
 void main() {
-  setupMocks();
-
   testWidgets('test circle marker key', (tester) async {
     const key = Key('c-1');
 

diff --git a/test/layer/marker_layer_test.dart b/test/layer/marker_layer_test.dart
@@ -3,12 +3,9 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:latlong2/latlong.dart';
 
-import '../test_utils/mocks.dart';
 import '../test_utils/test_app.dart';
 
 void main() {
-  setupMocks();
-
   testWidgets('test marker key', (tester) async {
     const key = Key('m-1');
 

diff --git a/test/layer/polygon_layer_test.dart b/test/layer/polygon_layer_test.dart
@@ -3,12 +3,9 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:latlong2/latlong.dart';
 
-import '../test_utils/mocks.dart';
 import '../test_utils/test_app.dart';
 
 void main() {
-  setupMocks();
-
   testWidgets('test polygon layer', (tester) async {
     final polygons = <Polygon>[
       for (int i = 0; i < 1; ++i)

diff --git a/test/layer/polyline_layer_test.dart b/test/layer/polyline_layer_test.dart
@@ -3,12 +3,9 @@ import 'package:flutter_map/flutter_map.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:latlong2/latlong.dart';
 
-import '../test_utils/mocks.dart';
 import '../test_utils/test_app.dart';
 
 void main() {
-  setupMocks();
-
   testWidgets('test polyline layer', (tester) async {
     final polylines = <Polyline>[
       for (int i = 0; i < 10; i++)

diff --git a/test/test_utils/mocks.dart b/test/test_utils/mocks.dart
diff --git a/test/test_utils/test_app.dart b/test/test_utils/test_app.dart
@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:latlong2/latlong.dart';
@@ -36,6 +38,7 @@ class TestApp extends StatelessWidget {
               children: [
                 TileLayer(
                   urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
+                  tileProvider: TestTileProvider(),
                 ),
                 if (polylines.isNotEmpty) PolylineLayer(polylines: polylines),
                 if (polygons.isNotEmpty) PolygonLayer(polygons: polygons),
@@ -49,3 +52,14 @@ class TestApp extends StatelessWidget {
     );
   }
 }
+
+class TestTileProvider extends TileProvider {
+  // Base 64 encoded 256x256 white tile.
+  static const _whiteTile =
+      'iVBORw0KGgoAAAANSUhEUgAAAQAAAAEAAQMAAABmvDolAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRF////p8QbyAAAAB9JREFUeJztwQENAAAAwqD3T20ON6AAAAAAAAAAAL4NIQAAAfFnIe4AAAAASUVORK5CYII=';
+
+  @override
+  ImageProvider<Object> getImage(
+          TileCoordinates coordinates, TileLayer options) =>
+      MemoryImage(base64Decode(_whiteTile));
+}