--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/Optional/Basic.java Tue Mar 19 16:05:34 2013 -0700
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 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
+ * @summary Basic functional test of Optional
+ * @author Mike Duigou
+ * @run testng Basic
+ */
+
+import java.util.NoSuchElementException;
+import java.util.Optional;
+
+import static org.testng.Assert.*;
+import org.testng.annotations.Test;
+
+
+public class Basic {
+
+ @Test(groups = "unit")
+ public void testEmpty() {
+ Optional<Boolean> empty = Optional.empty();
+ Optional<String> presentEmptyString = Optional.of("");
+ Optional<Boolean> present = Optional.of(Boolean.TRUE);
+
+ // empty
+ assertTrue(empty.equals(empty));
+ assertTrue(empty.equals(Optional.empty()));
+ assertTrue(!empty.equals(present));
+ assertTrue(0 == empty.hashCode());
+ assertTrue(!empty.toString().isEmpty());
+ assertTrue(!empty.toString().equals(presentEmptyString.toString()));
+ assertTrue(!empty.isPresent());
+ empty.ifPresent(v -> { fail(); });
+ assertSame(null, empty.orElse(null));
+ RuntimeException orElse = new RuntimeException() { };
+ assertSame(Boolean.FALSE, empty.orElse(Boolean.FALSE));
+ assertSame(null, empty.orElseGet(()-> null));
+ assertSame(Boolean.FALSE, empty.orElseGet(()-> Boolean.FALSE));
+ }
+
+ @Test(expectedExceptions=NoSuchElementException.class)
+ public void testEmptyGet() {
+ Optional<Boolean> empty = Optional.empty();
+
+ Boolean got = empty.get();
+ }
+
+ @Test(expectedExceptions=NullPointerException.class)
+ public void testEmptyOrElseGetNull() {
+ Optional<Boolean> empty = Optional.empty();
+
+ Boolean got = empty.orElseGet(null);
+ }
+
+ @Test(expectedExceptions=NullPointerException.class)
+ public void testEmptyOrElseThrowNull() throws Throwable {
+ Optional<Boolean> empty = Optional.empty();
+
+ Boolean got = empty.orElseThrow(null);
+ }
+
+ @Test(expectedExceptions=ObscureException.class)
+ public void testEmptyOrElseThrow() throws Exception {
+ Optional<Boolean> empty = Optional.empty();
+
+ Boolean got = empty.orElseThrow(ObscureException::new);
+ }
+
+ @Test(groups = "unit")
+ public void testPresent() {
+ Optional<Boolean> empty = Optional.empty();
+ Optional<String> presentEmptyString = Optional.of("");
+ Optional<Boolean> present = Optional.of(Boolean.TRUE);
+
+ // present
+ assertTrue(present.equals(present));
+ assertTrue(present.equals(Optional.of(Boolean.TRUE)));
+ assertTrue(!present.equals(empty));
+ assertTrue(Boolean.TRUE.hashCode() == present.hashCode());
+ assertTrue(!present.toString().isEmpty());
+ assertTrue(!present.toString().equals(presentEmptyString.toString()));
+ assertTrue(-1 != present.toString().indexOf(Boolean.TRUE.toString()));
+ assertSame(Boolean.TRUE, present.get());
+ try {
+ present.ifPresent(v -> { throw new ObscureException(); });
+ fail();
+ } catch(ObscureException expected) {
+
+ }
+ assertSame(Boolean.TRUE, present.orElse(null));
+ assertSame(Boolean.TRUE, present.orElse(Boolean.FALSE));
+ assertSame(Boolean.TRUE, present.orElseGet(null));
+ assertSame(Boolean.TRUE, present.orElseGet(()-> null));
+ assertSame(Boolean.TRUE, present.orElseGet(()-> Boolean.FALSE));
+ assertSame(Boolean.TRUE, present.<RuntimeException>orElseThrow( null));
+ assertSame(Boolean.TRUE, present.<RuntimeException>orElseThrow(ObscureException::new));
+ }
+
+ private static class ObscureException extends RuntimeException {
+
+ }
+}