fix: Make ClassGraph discover package-private @Route views

browserless-test/junit6/src/test/java/com/example/base/PackagePrivateView.java

@@ -0,0 +1,30 @@
+/**
+ * Copyright (C) 2000-2026 Vaadin Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.base;
+
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.Tag;
+import com.vaadin.flow.router.Route;
+
+/**
+ * A package-private route view used to verify that
+ * {@link com.vaadin.browserless.internal.Routes#autoDiscoverViews}
+ * discovers non-public views.
+ */
+@Tag("div")
+@Route("package-private")
+class PackagePrivateView extends Component {
+}

browserless-test/junit6/src/test/kotlin/com/vaadin/browserless/internal/RoutesTest.kt

@@ -33,10 +33,11 @@ import com.vaadin.browserless.viewscan.byannotatedclass.ViewPackagesTestView
 import kotlin.test.expect
 
 
+val packagePrivateViewClass: Class<out Component> = Class.forName("com.example.base.PackagePrivateView").asSubclass(Component::class.java)
 val allViews: Set<Class<out Component>> = setOf<Class<out Component>>(
         HelloWorldView::class.java, WelcomeView::class.java,
         ParametrizedView::class.java, ChildView::class.java, NavigationPostponeView::class.java,
-        ViewPackagesTestView::class.java, SignalsView::class.java)
+        ViewPackagesTestView::class.java, SignalsView::class.java, packagePrivateViewClass)
 val allErrorRoutes: Set<Class<out HasErrorParameter<*>>> = setOf(ErrorView::class.java, MockRouteNotFoundError::class.java, MockInternalSeverError::class.java)
 
 @DynaTestDsl
@@ -53,6 +54,13 @@ fun DynaNodeGroup.routesTestBatch() {
         expect(allErrorRoutes) { routes.errorRoutes.toSet() }
     }
 
+    test("package-private views are discovered") {
+        val routes: Routes = Routes().autoDiscoverViews(*packagesToScan)
+        expect(true, "PackagePrivateView should be discovered") {
+            routes.routes.any { it.name == "com.example.base.PackagePrivateView" }
+        }
+    }
+
     test("calling autoDiscoverViews() multiple times won't fail") {
         expect(allViews) { Routes().autoDiscoverViews(*packagesToScan).routes }
         expect(allViews) { Routes().autoDiscoverViews(*packagesToScan).routes }
@@ -106,7 +114,7 @@ fun DynaNodeGroup.routesTestBatch() {
 
     test("merge routes") {
         val routes1 = Routes(mutableSetOf(HelloWorldView::class.java, WelcomeView::class.java,
-                ViewPackagesTestView::class.java, SignalsView::class.java),
+                ViewPackagesTestView::class.java, SignalsView::class.java, packagePrivateViewClass),
                 mutableSetOf(ErrorView::class.java))
         val routes2 = Routes(mutableSetOf(ParametrizedView::class.java, ChildView::class.java, NavigationPostponeView::class.java),
                 mutableSetOf(MockRouteNotFoundError::class.java, MockInternalSeverError::class.java))

browserless-test/shared/src/main/kotlin/com/vaadin/browserless/internal/Routes.kt

@@ -76,6 +76,7 @@ data class Routes(
     fun autoDiscoverViews(vararg packageNames: String? = arrayOf()): Routes = apply {
         val classGraph: ClassGraph = ClassGraph().enableClassInfo()
                 .enableAnnotationInfo()
+                .ignoreClassVisibility()
                 .acceptPackages(*(packageNames.map { it ?: "" }.toTypedArray()))
         classGraph.scan().use { scanResult: ScanResult ->
             scanResult.getClassesWithAnnotation(Route::class.java.name).mapTo(routes) { info: ClassInfo ->