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The following commit(s) were added to refs/heads/master by this push:
     new 8f4956ae6 Add ConditionalNode to conditionally include subtrees based 
on injector state
8f4956ae6 is described below

commit 8f4956ae671d80c7d09d8377df86a185131bc1df
Author: Andreas Veithen-Knowles <[email protected]>
AuthorDate: Thu Mar 19 22:55:03 2026 +0000

    Add ConditionalNode to conditionally include subtrees based on injector 
state
---
 .../axiom/testutils/suite/ConditionalNode.java     | 58 ++++++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git 
a/testing/matrix-testsuite/src/main/java/org/apache/axiom/testutils/suite/ConditionalNode.java
 
b/testing/matrix-testsuite/src/main/java/org/apache/axiom/testutils/suite/ConditionalNode.java
new file mode 100644
index 000000000..0bd2399cd
--- /dev/null
+++ 
b/testing/matrix-testsuite/src/main/java/org/apache/axiom/testutils/suite/ConditionalNode.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.axiom.testutils.suite;
+
+import java.util.Map;
+import java.util.function.BiPredicate;
+import java.util.function.Predicate;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.DynamicNode;
+
+import com.google.inject.Injector;
+
+/**
+ * A node that conditionally delegates to its single child based on a 
predicate evaluated against
+ * the current Guice injector. If the predicate returns {@code true}, the 
child's dynamic nodes are
+ * produced; otherwise an empty stream is returned.
+ *
+ * <p>This is useful for removing tests or entire groups of tests for specific 
values in a fan-out.
+ * For example, if a certain test only makes sense for a particular 
implementation bound in the
+ * injector, this node can inspect the injector to decide whether to include 
the subtree.
+ */
+public final class ConditionalNode extends MatrixTestNode {
+    private final Predicate<Injector> predicate;
+    private final MatrixTestNode child;
+
+    public ConditionalNode(Predicate<Injector> predicate, MatrixTestNode 
child) {
+        this.predicate = predicate;
+        this.child = child;
+    }
+
+    @Override
+    Stream<DynamicNode> toDynamicNodes(
+            Injector parentInjector,
+            Map<String, String> inheritedParameters,
+            BiPredicate<Class<?>, Map<String, String>> excludes) {
+        if (!predicate.test(parentInjector)) {
+            return Stream.empty();
+        }
+        return child.toDynamicNodes(parentInjector, inheritedParameters, 
excludes);
+    }
+}

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