8370122: jpackage test lib improvements

Reviewed-by: almatvee

Author: Alexey Semenyuk

src/jdk.jpackage/share/classes/jdk/jpackage/internal/util/IdentityWrapper.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2025, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+package jdk.jpackage.internal.util;
+
+import java.util.Objects;
+
+/**
+ * Object wrapper implementing {@link Object#equals(Object)} such that it
+ * returns {@code true} only when the argument is another instance of this class
+ * wrapping the same object.
+ * <p>
+ * The class guarantees that {@link Object#equals(Object)} and
+ * {@link Object#hashCode()} methods of the wrapped object will never be called
+ * inside of the class methods.
+ *
+ * @param <T> the type of the wrapped value
+ */
+public final class IdentityWrapper<T> {
+
+    public IdentityWrapper(T value) {
+        this.value = Objects.requireNonNull(value);
+    }
+
+    public T value() {
+        return value;
+    }
+
+    @Override
+    public int hashCode() {
+        return System.identityHashCode(value);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if ((obj == null) || (getClass() != obj.getClass())) {
+            return false;
+        }
+        var other = (IdentityWrapper<?>) obj;
+        return value == other.value;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("Identity[%s]", value);
+    }
+
+    private final T value;
+}

test/jdk/tools/jpackage/helpers-test/jdk/jpackage/test/JUnitUtilsTest.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2025, 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.
+ */
+package jdk.jpackage.test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import java.util.Map;
+import org.junit.jupiter.api.Test;
+
+public class JUnitUtilsTest {
+
+    @Test
+    public void test_assertArrayEquals() {
+        JUnitUtils.assertArrayEquals(new int[] {1, 2, 3}, new int[] {1, 2, 3});
+        JUnitUtils.assertArrayEquals(new long[] {1, 2, 3}, new long[] {1, 2, 3});
+        JUnitUtils.assertArrayEquals(new boolean[] {true, true}, new boolean[] {true, true});
+    }
+
+    @Test
+    public void test_assertArrayEquals_negative() {
+        assertThrows(AssertionError.class, () -> {
+            JUnitUtils.assertArrayEquals(new int[] {1, 2, 3}, new int[] {2, 3});
+        });
+    }
+
+    @Test
+    public void test_exceptionAsPropertyMapWithMessageWithoutCause() {
+
+        var ex = new Exception("foo");
+
+        var map = JUnitUtils.exceptionAsPropertyMap(ex);
+
+        assertEquals(Map.of("getClass", Exception.class.getName(), "getMessage", "foo"), map);
+    }
+}