undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.

test/jdk/java/util/stream/examples/JavadocExamples.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+import org.testng.annotations.Test;
+
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.testng.Assert.assertEquals;
+
+/*
+ * THE CONTENTS OF THIS FILE HAVE TO BE IN SYNC WITH THE EXAMPLES USED IN THE JAVADOC.
+ *
+ * @test
+ * @run testng/othervm JavadocExamples
+ * @summary Checks to ensure example code displayed in the API documentation of
+ *  java/util/Stream compiles correctly.
+ */
+public class JavadocExamples {
+
+    // From mapMulti
+    @Test
+    public void testNumberIntegerExample() {
+        Stream<Number> numbers = Stream.of(1, 2, 3.0);
+        List<Integer> integers = numbers.<Integer>mapMulti((number, consumer) -> {
+            if (number instanceof Integer i)
+                consumer.accept(i);
+        })
+        .collect(Collectors.toList());
+
+        assertEquals(integers, List.of(1,2));
+    }
+    @Test
+    public void testExpandIterableExample() {
+        var nestedList = List.of(1, List.of(2, List.of(3, 4)), 5);
+        Stream<Object> expandedStream = nestedList.stream().mapMulti(C::expandIterable);
+
+        assertEquals(expandedStream.toList(), List.of(1,2,3,4,5));
+    }
+    static class C {
+        static void expandIterable(Object e, Consumer<Object> c) {
+            if (e instanceof Iterable<?> elements) {
+                for (Object ie : elements) {
+                    expandIterable(ie, c);
+                }
+            } else if (e != null) {
+                c.accept(e);
+            }
+        }
+    }
+}