Simplify config providers with Utils.toClasses().

common/junit-platform-native/src/main/java/org/graalvm/junit/platform/NativeImageConfigurationImpl.java

@@ -65,18 +65,6 @@ public void registerForReflection(Field... fields) {
         RuntimeReflection.register(fields);
     }
 
-    @Override
-    public void initializeAtBuildTime(String... classNames) {
-        for (String className : classNames) {
-            Class<?> clazz;
-            try {
-                clazz = Class.forName(className);
-                initializeAtBuildTime(clazz);
-            } catch (ClassNotFoundException e) {
-                JUnitPlatformFeature.debug("[Native Image Configuration] Failed to register class for build time initialization: %s Reason: %s", className, e);
-            }
-        }
-    }
 
     @Override
     public void initializeAtBuildTime(Class<?>... classes) {

common/junit-platform-native/src/main/java/org/graalvm/junit/platform/config/core/NativeImageConfiguration.java

@@ -42,6 +42,7 @@
 package org.graalvm.junit.platform.config.core;
 
 import org.graalvm.junit.platform.JUnitPlatformFeature;
+import org.graalvm.junit.platform.config.util.Utils;
 
 import java.lang.reflect.Executable;
 import java.lang.reflect.Field;
@@ -54,6 +55,10 @@ public interface NativeImageConfiguration {
 
     void registerForReflection(Field... fields);
 
+    default void registerAllClassMembersForReflection(String... classNames) {
+        registerAllClassMembersForReflection(Utils.toClasses(classNames));
+    };
+
     default void registerAllClassMembersForReflection(Class<?>... classes) {
         for (Class<?> clazz : classes) {
             JUnitPlatformFeature.debug("[Native Image Configuration] Registering for reflection: %s", clazz.getName());
@@ -64,7 +69,9 @@ default void registerAllClassMembersForReflection(Class<?>... classes) {
         }
     }
 
-    void initializeAtBuildTime(String... classNames);
+    default void initializeAtBuildTime(String... classNames) {
+        initializeAtBuildTime(Utils.toClasses(classNames));
+    };
 
     void initializeAtBuildTime(Class<?>... classes);
 }

common/junit-platform-native/src/main/java/org/graalvm/junit/platform/config/jupiter/JupiterConfigProvider.java

@@ -68,7 +68,7 @@ public class JupiterConfigProvider implements PluginConfigProvider {
 
     @Override
     public void onLoad(NativeImageConfiguration config) {
-        String[] buildTimeInitializedClasses = new String[]{
+        config.initializeAtBuildTime(
                 "org.junit.jupiter.engine.config.EnumConfigurationParameterConverter",
                 "org.junit.jupiter.engine.descriptor.ClassTestDescriptor",
                 "org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor",
@@ -84,23 +84,12 @@ public void onLoad(NativeImageConfiguration config) {
                 // new in Junit 5.10
                 "org.junit.platform.launcher.core.LauncherConfig",
                 "org.junit.jupiter.engine.config.InstantiatingConfigurationParameterConverter"
-        };
-        for (String className : buildTimeInitializedClasses) {
-            config.initializeAtBuildTime(className);
-        }
+        );
 
-        String[] registeredForReflection = {
+        config.registerAllClassMembersForReflection(
                 "org.junit.jupiter.engine.extension.TimeoutExtension$ExecutorResource",
                 "org.junit.jupiter.engine.extension.TimeoutInvocationFactory$SingleThreadExecutorResource"
-        };
-        for (String className : registeredForReflection) {
-            try {
-                Class <?> executor = Class.forName(className);
-                config.registerAllClassMembersForReflection(executor);
-            } catch (ClassNotFoundException e) {
-                debug("Failed to register class for reflection. Reason: %s", e);
-            }
-        }
+        );
     }
 
     @Override

common/junit-platform-native/src/main/java/org/graalvm/junit/platform/config/platform/PlatformConfigProvider.java

@@ -48,7 +48,7 @@ public class PlatformConfigProvider implements PluginConfigProvider {
 
     @Override
     public void onLoad(NativeImageConfiguration config) {
-        String[] buildTimeInitializedClasses = new String[] {
+        config.initializeAtBuildTime(
                 "org.junit.platform.launcher.TestIdentifier",
                 "org.junit.platform.launcher.core.InternalTestPlan",
                 "org.junit.platform.commons.util.StringUtils",
@@ -61,10 +61,7 @@ public void onLoad(NativeImageConfiguration config) {
                 "org.junit.platform.commons.util.ReflectionUtils",
                 // https://github.com/graalvm/native-build-tools/issues/300
                 "org.junit.platform.reporting.open.xml.OpenTestReportGeneratingListener"
-        };
-        for (String className : buildTimeInitializedClasses) {
-            config.initializeAtBuildTime(className);
-        }
+        );
 
         try {
             /* Verify if the core JUnit Platform test class is available on the classpath */

common/junit-platform-native/src/main/java/org/graalvm/junit/platform/config/util/Utils.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2023, 2023, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * The Universal Permissive License (UPL), Version 1.0
+ *
+ * Subject to the condition set forth below, permission is hereby granted to any
+ * person obtaining a copy of this software, associated documentation and/or
+ * data (collectively the "Software"), free of charge and under any and all
+ * copyright rights in the Software, and any and all patent rights owned or
+ * freely licensable by each licensor hereunder covering either (i) the
+ * unmodified Software as contributed to or provided by such licensor, or (ii)
+ * the Larger Works (as defined below), to deal in both
+ *
+ * (a) the Software, and
+ *
+ * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+ * one is included with the Software each a "Larger Work" to which the Software
+ * is contributed by such licensors),
+ *
+ * without restriction, including without limitation the rights to copy, create
+ * derivative works of, display, perform, and distribute the Software and make,
+ * use, sell, offer for sale, import, export, have made, and have sold the
+ * Software and the Larger Work(s), and to sublicense the foregoing rights on
+ * either these or other terms.
+ *
+ * This license is subject to the following condition:
+ *
+ * The above copyright notice and either this complete permission notice or at a
+ * minimum a reference to the UPL must be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package org.graalvm.junit.platform.config.util;
+
+import org.graalvm.junit.platform.JUnitPlatformFeature;
+
+import java.util.Arrays;
+
+public class Utils {
+    public static Class<?>[] toClasses(String... classNames) {
+        return Arrays.stream(classNames).map(className -> {
+            Class<?> clazz = null;
+            try {
+                clazz = Class.forName(className);
+            } catch (ClassNotFoundException e) {
+                JUnitPlatformFeature.debug("[Native Image Configuration] Failed to resolve: %s Reason: %s", className, e);
+            }
+            return clazz;
+        }).filter(c -> c != null).toArray(Class[]::new);
+    }
+}

common/junit-platform-native/src/main/java/org/graalvm/junit/platform/config/vintage/VintageConfigProvider.java

@@ -48,7 +48,7 @@ public class VintageConfigProvider implements PluginConfigProvider {
 
     @Override
     public void onLoad(NativeImageConfiguration config) {
-        String[] buildTimeInitializedClasses = new String[]{
+        config.initializeAtBuildTime(
                 "org.junit.vintage.engine.descriptor.RunnerTestDescriptor",
                 "org.junit.vintage.engine.support.UniqueIdReader",
                 "org.junit.vintage.engine.support.UniqueIdStringifier",
@@ -57,10 +57,7 @@ public void onLoad(NativeImageConfiguration config) {
                 "org.junit.runners.JUnit4",
                 /* Workaround until we can register serializable classes from a native-image feature */
                 "org.junit.runner.Result"
-        };
-        for (String className : buildTimeInitializedClasses) {
-            config.initializeAtBuildTime(className);
-        }
+        );
     }
 
     @Override