Add test for calling non-ReactComponentFactoryProxy componentFactory

UIP-2410

test/over_react/component_declaration/component_base_test.dart

@@ -247,6 +247,36 @@ main() {
         });
       });
 
+      test('invokes a non-ReactComponentFactoryProxy componentFactory function properly when invoked', () {
+        final ReactElement expectedReturnValue = Dom.div()();
+        const expectedProps = const {'testProp': 'testValue'};
+
+        var calls = [];
+
+        ReactElement customFactory([Map props, a = 0, b = 0, c = 0, d = 0]) {
+          calls.add([props, a, b, c, d]);
+          return expectedReturnValue;
+        }
+
+        var builder = new TestUiPropsWithCustomComponentFactory()
+          ..componentFactory = customFactory
+          ..['testProp'] = 'testValue';
+
+        expect(builder(), expectedReturnValue);
+        expect(builder(1), expectedReturnValue);
+        expect(builder(1, 2), expectedReturnValue);
+        expect(builder(1, 2, 3), expectedReturnValue);
+        expect(builder(1, 2, 3, 4), expectedReturnValue);
+
+        expect(calls, [
+          [expectedProps, 0, 0, 0, 0],
+          [expectedProps, 1, 0, 0, 0],
+          [expectedProps, 1, 2, 0, 0],
+          [expectedProps, 1, 2, 3, 0],
+          [expectedProps, 1, 2, 3, 4],
+        ]);
+      });
+
       group('provides Map functionality:', () {
         test('is a Map', () {
           expect(new TestComponentProps(), const isInstanceOf<Map>());
@@ -813,3 +843,11 @@ class TestStateMapViewMixin extends Object with MapViewMixin, StateMapViewMixin
 
   TestStateMapViewMixin(this.state);
 }
+
+class TestUiPropsWithCustomComponentFactory extends UiProps {
+  @override
+  Function componentFactory;
+
+  @override
+  final Map props = {};
+}