[google_maps_flutter] Fix prefer_const_literals_to_create_immutables (flutter#5811)

Author: jmagman

packages/google_maps_flutter/google_maps_flutter_web/CHANGELOG.md

@@ -1,3 +1,7 @@
+## NEXT
+
+* Adds `const` constructor parameters in example tests.
+
 ## 0.3.3
 
 * Removes custom `analysis_options.yaml` (and fixes code to comply with newest rules).

packages/google_maps_flutter/google_maps_flutter_web/example/integration_test/google_maps_controller_test.dart

@@ -145,8 +145,8 @@ void main() {
           expect(() {
             controller.updateCircles(
               CircleUpdates.from(
-                <Circle>{},
-                <Circle>{},
+                const <Circle>{},
+                const <Circle>{},
               ),
             );
           }, throwsAssertionError);
@@ -159,8 +159,8 @@ void main() {
           expect(() {
             controller.updatePolygons(
               PolygonUpdates.from(
-                <Polygon>{},
-                <Polygon>{},
+                const <Polygon>{},
+                const <Polygon>{},
               ),
             );
           }, throwsAssertionError);
@@ -173,8 +173,8 @@ void main() {
           expect(() {
             controller.updatePolylines(
               PolylineUpdates.from(
-                <Polyline>{},
-                <Polyline>{},
+                const <Polyline>{},
+                const <Polyline>{},
               ),
             );
           }, throwsAssertionError);
@@ -187,8 +187,8 @@ void main() {
           expect(() {
             controller.updateMarkers(
               MarkerUpdates.from(
-                <Marker>{},
-                <Marker>{},
+                const <Marker>{},
+                const <Marker>{},
               ),
             );
           }, throwsAssertionError);

packages/google_maps_flutter/google_maps_flutter_web/example/integration_test/google_maps_plugin_test.dart

@@ -233,8 +233,8 @@ void main() {
       // Geometry
       testWidgets('updateMarkers', (WidgetTester tester) async {
         final MarkerUpdates expectedUpdates = MarkerUpdates.from(
-          <Marker>{},
-          <Marker>{},
+          const <Marker>{},
+          const <Marker>{},
         );
 
         await plugin.updateMarkers(expectedUpdates, mapId: mapId);
@@ -243,8 +243,8 @@ void main() {
       });
       testWidgets('updatePolygons', (WidgetTester tester) async {
         final PolygonUpdates expectedUpdates = PolygonUpdates.from(
-          <Polygon>{},
-          <Polygon>{},
+          const <Polygon>{},
+          const <Polygon>{},
         );
 
         await plugin.updatePolygons(expectedUpdates, mapId: mapId);
@@ -253,8 +253,8 @@ void main() {
       });
       testWidgets('updatePolylines', (WidgetTester tester) async {
         final PolylineUpdates expectedUpdates = PolylineUpdates.from(
-          <Polyline>{},
-          <Polyline>{},
+          const <Polyline>{},
+          const <Polyline>{},
         );
 
         await plugin.updatePolylines(expectedUpdates, mapId: mapId);
@@ -263,8 +263,8 @@ void main() {
       });
       testWidgets('updateCircles', (WidgetTester tester) async {
         final CircleUpdates expectedUpdates = CircleUpdates.from(
-          <Circle>{},
-          <Circle>{},
+          const <Circle>{},
+          const <Circle>{},
         );
 
         await plugin.updateCircles(expectedUpdates, mapId: mapId);