/* * Copyright (c) 2013, 2018, 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 8195649 * @summary Basic functional test of OptionalDouble * @author Mike Duigou * @build ObscureException * @run testng BasicDouble */ package test.java.util.Optional; // Android-added: support for wrapper to avoid d8 backporting of Optional methods (b/191859202). import java.lang.invoke.MethodHandle; import java.lang.invoke.MethodHandles; import java.lang.invoke.MethodType; import java.util.function.DoubleConsumer; import java.util.stream.DoubleStream; import java.util.NoSuchElementException; import java.util.OptionalDouble; import java.util.concurrent.atomic.AtomicBoolean; import static org.testng.Assert.*; import org.testng.annotations.Test; public class BasicDouble { static final double DOUBLEVAL = Math.PI; static final double UNEXPECTED = 6.62607004E-34; /** * Checks a block of assertions over an empty OptionalDouble. */ void checkEmpty(OptionalDouble empty) { assertTrue(empty.equals(OptionalDouble.empty())); assertTrue(OptionalDouble.empty().equals(empty)); assertFalse(empty.equals(OptionalDouble.of(UNEXPECTED))); assertFalse(OptionalDouble.of(UNEXPECTED).equals(empty)); assertFalse(empty.equals("unexpected")); assertFalse(empty.isPresent()); // Android-changed: Avoid backporting of isEmpty() (b/191859202). // assertTrue(empty.isEmpty()); assertTrue(OptionalDouble_isEmpty(empty)); assertEquals(empty.hashCode(), 0); assertEquals(empty.orElse(UNEXPECTED), UNEXPECTED); assertEquals(empty.orElseGet(() -> UNEXPECTED), UNEXPECTED); assertThrows(NoSuchElementException.class, () -> empty.getAsDouble()); // Android-changed: Avoid backporting of orElseThrow() (b/191859202). // assertThrows(NoSuchElementException.class, () -> empty.orElseThrow()); assertThrows(NoSuchElementException.class, () -> OptionalDouble_orElseThrow(empty)); assertThrows(ObscureException.class, () -> empty.orElseThrow(ObscureException::new)); var b = new AtomicBoolean(); empty.ifPresent(s -> b.set(true)); assertFalse(b.get()); var b1 = new AtomicBoolean(false); var b2 = new AtomicBoolean(false); // Android-changed: Avoid backporting of ifPresentOrElse() (b/191859202). // empty.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true)); OptionalDouble_ifPresentOrElse(empty, s -> b1.set(true), () -> b2.set(true)); assertFalse(b1.get()); assertTrue(b2.get()); assertEquals(empty.toString(), "OptionalDouble.empty"); } /** * Checks a block of assertions over an OptionalDouble that is expected to * have a particular value present. */ void checkPresent(OptionalDouble opt, double expected) { assertFalse(opt.equals(OptionalDouble.empty())); assertFalse(OptionalDouble.empty().equals(opt)); assertTrue(opt.equals(OptionalDouble.of(expected))); assertTrue(OptionalDouble.of(expected).equals(opt)); assertFalse(opt.equals(OptionalDouble.of(UNEXPECTED))); assertFalse(OptionalDouble.of(UNEXPECTED).equals(opt)); assertFalse(opt.equals("unexpected")); assertTrue(opt.isPresent()); // Android-changed: Avoid backporting of isEmpty() (b/191859202). // assertFalse(opt.isEmpty()); assertFalse(OptionalDouble_isEmpty(opt)); assertEquals(opt.hashCode(), Double.hashCode(expected)); assertEquals(opt.orElse(UNEXPECTED), expected); assertEquals(opt.orElseGet(() -> UNEXPECTED), expected); assertEquals(opt.getAsDouble(), expected); // Android-changed: Avoid backporting of orElseThrow() (b/191859202). // assertEquals(opt.orElseThrow(), expected); assertEquals(OptionalDouble_orElseThrow(opt), expected); assertEquals(opt.orElseThrow(ObscureException::new), expected); var b = new AtomicBoolean(false); opt.ifPresent(s -> b.set(true)); assertTrue(b.get()); var b1 = new AtomicBoolean(false); var b2 = new AtomicBoolean(false); // Android-changed: Avoid backporting of ifPresentOrElse() (b/191859202). // opt.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true)); OptionalDouble_ifPresentOrElse(opt, s -> b1.set(true), () -> b2.set(true)); assertTrue(b1.get()); assertFalse(b2.get()); assertEquals(opt.toString(), "OptionalDouble[" + expected + "]"); } @Test(groups = "unit") public void testEmpty() { checkEmpty(OptionalDouble.empty()); } @Test(groups = "unit") public void testPresent() { checkPresent(OptionalDouble.of(DOUBLEVAL), DOUBLEVAL); } @Test public void testStreamEmpty() { // Android-changed: Avoid backporting of stream() (b/191859202). // assertEquals(OptionalDouble.empty().stream().toArray(), new double[] { }); assertEquals(OptionalDouble_stream(OptionalDouble.empty()).toArray(), new double[] { }); } @Test public void testStreamPresent() { // Android-changed: Avoid backporting of stream() (b/191859202). // assertEquals(OptionalDouble.of(DOUBLEVAL).stream().toArray(), new double[] { DOUBLEVAL }); assertEquals(OptionalDouble_stream(OptionalDouble.of(DOUBLEVAL)).toArray(), new double[] { DOUBLEVAL }); } // Android-added: wrapper for d8 backport of OptionalDouble.ifPresentOrElse() (b/191859202). private static void OptionalDouble_ifPresentOrElse( OptionalDouble receiver, DoubleConsumer action, Runnable emptyAction) { try { MethodType type = MethodType.methodType(void.class, DoubleConsumer.class, Runnable.class); MethodHandle mh = MethodHandles.lookup().findVirtual(OptionalDouble.class, "ifPresentOrElse", type); mh.invokeExact(receiver, action, emptyAction); } catch (Throwable t) { throw new RuntimeException(t); } } // Android-added: wrapper to avoid d8 backport of OptionalDouble.isEmpty() (b/191859202). private static boolean OptionalDouble_isEmpty(OptionalDouble receiver) { try { MethodType type = MethodType.methodType(boolean.class); MethodHandle mh = MethodHandles.lookup().findVirtual(OptionalDouble.class, "isEmpty", type); return (boolean) mh.invokeExact(receiver); } catch (Throwable t) { throw new RuntimeException(t); } } // Android-added: wrapper to avoid d8 backport of OptionalDouble.orElseThrow() (b/191859202). private static double OptionalDouble_orElseThrow(OptionalDouble receiver) { try { MethodType type = MethodType.methodType(double.class); MethodHandle mh = MethodHandles.lookup().findVirtual(OptionalDouble.class, "orElseThrow", type); return (double) mh.invokeExact(receiver); } catch (NoSuchElementException expected) { throw expected; // Underlying method may throw NoSuchElementException } catch (Throwable t) { throw new RuntimeException(t); } } // Android-added: wrapper to avoid d8 backport of OptionalDouble.stream() (b/191859202). private static DoubleStream OptionalDouble_stream(OptionalDouble receiver) { try { MethodType type = MethodType.methodType(DoubleStream.class); MethodHandle mh = MethodHandles.lookup().findVirtual(OptionalDouble.class, "stream", type); return (DoubleStream) mh.invokeExact(receiver); } catch (Throwable t) { throw new RuntimeException(t); } } }