test: add unit tests for map padding (#270)

Author: illuminati1911

test/google_navigation_flutter_test.dart

@@ -595,6 +595,57 @@ void main() {
               verify(viewMockApi.setMapToolbarEnabled(captureAny, captureAny)),
               true);
         });
+
+        test('set padding for map', () async {
+          // Create padding
+          EdgeInsets insets =
+              const EdgeInsets.only(left: 5, right: 10, top: 15, bottom: 20);
+
+          // Mock api response
+          when(viewMockApi.setPadding(any, any))
+              .thenAnswer((Invocation _) async => ());
+
+          // Set padding
+          await GoogleMapsNavigationPlatform.instance
+              .setPadding(viewId: 0, padding: insets);
+
+          // Verify correct message sent from view api
+          final VerificationResult result =
+              verify(viewMockApi.setPadding(captureAny, captureAny));
+          final MapPaddingDto paddingMessage =
+              result.captured[1] as MapPaddingDto;
+
+          // Verify message
+          expect(insets.left, paddingMessage.left);
+          expect(insets.right, paddingMessage.right);
+          expect(insets.top, paddingMessage.top);
+          expect(insets.bottom, paddingMessage.bottom);
+        });
+
+        test('get padding from map', () async {
+          // Create padding
+          EdgeInsets insets =
+              const EdgeInsets.only(top: 5, left: 10, bottom: 15, right: 20);
+
+          // Mock api response
+          final MapPaddingDto messagePadding =
+              MapPaddingDto(top: 5, left: 10, bottom: 15, right: 20);
+          when(viewMockApi.getPadding(any))
+              .thenAnswer((Invocation _) => messagePadding);
+
+          // Get padding
+          final EdgeInsets paddingOut =
+              await GoogleMapsNavigationPlatform.instance.getPadding(viewId: 0);
+
+          // Verify correct message sent from view api
+          final VerificationResult result =
+              verify(viewMockApi.getPadding(captureAny));
+          final int viewId = result.captured[0] as int;
+
+          // Verify response padding
+          expect(viewId, 0);
+          expect(insets, paddingOut);
+        });
       });
 
       group('Navigation session API', () {

test/google_navigation_flutter_test.mocks.dart

@@ -1,4 +1,4 @@
-// Copyright 2024 Google LLC
+// Copyright 2025 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -73,9 +73,19 @@ class _FakeLatLngBoundsDto_2 extends _i1.SmartFake
         );
 }
 
-class _FakeImageDescriptorDto_3 extends _i1.SmartFake
+class _FakeMapPaddingDto_3 extends _i1.SmartFake implements _i2.MapPaddingDto {
+  _FakeMapPaddingDto_3(
+    Object parent,
+    Invocation parentInvocation,
+  ) : super(
+          parent,
+          parentInvocation,
+        );
+}
+
+class _FakeImageDescriptorDto_4 extends _i1.SmartFake
     implements _i2.ImageDescriptorDto {
-  _FakeImageDescriptorDto_3(
+  _FakeImageDescriptorDto_4(
     Object parent,
     Invocation parentInvocation,
   ) : super(
@@ -1668,6 +1678,37 @@ class MockTestMapViewApi extends _i1.Mock implements _i3.TestMapViewApi {
         ),
         returnValueForMissingStub: null,
       );
+
+  @override
+  void setPadding(
+    int? viewId,
+    _i2.MapPaddingDto? padding,
+  ) =>
+      super.noSuchMethod(
+        Invocation.method(
+          #setPadding,
+          [
+            viewId,
+            padding,
+          ],
+        ),
+        returnValueForMissingStub: null,
+      );
+
+  @override
+  _i2.MapPaddingDto getPadding(int? viewId) => (super.noSuchMethod(
+        Invocation.method(
+          #getPadding,
+          [viewId],
+        ),
+        returnValue: _FakeMapPaddingDto_3(
+          this,
+          Invocation.method(
+            #getPadding,
+            [viewId],
+          ),
+        ),
+      ) as _i2.MapPaddingDto);
 }
 
 /// A class which mocks [TestImageRegistryApi].
@@ -1698,7 +1739,7 @@ class MockTestImageRegistryApi extends _i1.Mock
             height,
           ],
         ),
-        returnValue: _FakeImageDescriptorDto_3(
+        returnValue: _FakeImageDescriptorDto_4(
           this,
           Invocation.method(
             #registerBitmapImage,