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/function/BinaryOperator/BasicTest.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2012, 2013, 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.
+ */
+
+/*
+ * @test
+ * @bug 8009736 8010279
+ * @run testng BasicTest
+ */
+
+import java.util.Comparator;
+import java.util.function.BinaryOperator;
+import java.util.function.Function;
+import java.util.function.ToIntFunction;
+import org.testng.annotations.Test;
+
+
+import static java.util.function.BinaryOperator.minBy;
+import static java.util.function.BinaryOperator.maxBy;
+import static org.testng.Assert.assertSame;
+import static org.testng.Assert.fail;
+
+/**
+ * Unit tests for helper methods in Comparators
+ */
+@Test(groups = "unit")
+public class BasicTest {
+
+    private static class People {
+        final String firstName;
+        final String lastName;
+        final int age;
+
+        People(String first, String last, int age) {
+            firstName = first;
+            lastName = last;
+            this.age = age;
+        }
+
+        String getFirstName() { return firstName; }
+        String getLastName() { return lastName; }
+        int getAge() { return age; }
+    }
+
+    private final People people[] = {
+        new People("John", "Doe", 34),
+        new People("Mary", "Doe", 30),
+    };
+
+    public void testMaxBy() {
+        Comparator<People> cmp = Comparator.comparing(People::getFirstName);
+        // lesser
+        assertSame(maxBy(cmp).apply(people[0], people[1]), people[1]);
+        // euqal
+        cmp = Comparator.comparing(People::getLastName);
+        assertSame(maxBy(cmp).apply(people[0], people[1]), people[0]);
+        // greater
+        cmp = Comparator.comparingInt(People::getAge);
+        assertSame(maxBy(cmp).apply(people[0], people[1]), people[0]);
+    }
+
+    public void testMinBy() {
+        Comparator<People> cmp = Comparator.comparing(People::getFirstName);
+        // lesser
+        assertSame(minBy(cmp).apply(people[0], people[1]), people[0]);
+        // euqal
+        cmp = Comparator.comparing(People::getLastName);
+        assertSame(minBy(cmp).apply(people[0], people[1]), people[0]);
+        // greater
+        cmp = Comparator.comparingInt(People::getAge);
+        assertSame(minBy(cmp).apply(people[0], people[1]), people[1]);
+    }
+
+    public void testNulls() {
+        try {
+            BinaryOperator<String> op = minBy(null);
+            fail("minBy(null) should throw NPE");
+        } catch (NullPointerException npe) {}
+
+        try {
+            BinaryOperator<String> op = maxBy(null);
+            fail("maxBy(null) should throw NPE");
+        } catch (NullPointerException npe) {}
+    }
+}