133 lines
4.7 KiB
Java
133 lines
4.7 KiB
Java
/*
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* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8195649
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* @summary Basic functional test of OptionalInt
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* @author Mike Duigou
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* @build ObscureException
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* @run testng BasicInt
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*/
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import java.util.NoSuchElementException;
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import java.util.OptionalInt;
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import java.util.concurrent.atomic.AtomicBoolean;
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import static org.testng.Assert.*;
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import org.testng.annotations.Test;
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public class BasicInt {
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static final int INTVAL = 33_550_336;
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static final int UNEXPECTED = 0xCAFEBABE;
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/**
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* Checks a block of assertions over an empty OptionalInt.
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*/
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void checkEmpty(OptionalInt empty) {
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assertTrue(empty.equals(OptionalInt.empty()));
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assertTrue(OptionalInt.empty().equals(empty));
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assertFalse(empty.equals(OptionalInt.of(UNEXPECTED)));
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assertFalse(OptionalInt.of(UNEXPECTED).equals(empty));
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assertFalse(empty.equals("unexpected"));
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assertFalse(empty.isPresent());
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assertTrue(empty.isEmpty());
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assertEquals(empty.hashCode(), 0);
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assertEquals(empty.orElse(UNEXPECTED), UNEXPECTED);
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assertEquals(empty.orElseGet(() -> UNEXPECTED), UNEXPECTED);
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assertThrows(NoSuchElementException.class, () -> empty.getAsInt());
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assertThrows(NoSuchElementException.class, () -> empty.orElseThrow());
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assertThrows(ObscureException.class, () -> empty.orElseThrow(ObscureException::new));
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var b = new AtomicBoolean();
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empty.ifPresent(s -> b.set(true));
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assertFalse(b.get());
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var b1 = new AtomicBoolean(false);
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var b2 = new AtomicBoolean(false);
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empty.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true));
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assertFalse(b1.get());
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assertTrue(b2.get());
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assertEquals(empty.toString(), "OptionalInt.empty");
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}
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/**
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* Checks a block of assertions over an OptionalInt that is expected to
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* have a particular value present.
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*/
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void checkPresent(OptionalInt opt, int expected) {
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assertFalse(opt.equals(OptionalInt.empty()));
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assertFalse(OptionalInt.empty().equals(opt));
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assertTrue(opt.equals(OptionalInt.of(expected)));
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assertTrue(OptionalInt.of(expected).equals(opt));
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assertFalse(opt.equals(OptionalInt.of(UNEXPECTED)));
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assertFalse(OptionalInt.of(UNEXPECTED).equals(opt));
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assertFalse(opt.equals("unexpected"));
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assertTrue(opt.isPresent());
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assertFalse(opt.isEmpty());
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assertEquals(opt.hashCode(), Integer.hashCode(expected));
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assertEquals(opt.orElse(UNEXPECTED), expected);
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assertEquals(opt.orElseGet(() -> UNEXPECTED), expected);
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assertEquals(opt.getAsInt(), expected);
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assertEquals(opt.orElseThrow(), expected);
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assertEquals(opt.orElseThrow(ObscureException::new), expected);
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var b = new AtomicBoolean(false);
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opt.ifPresent(s -> b.set(true));
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assertTrue(b.get());
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var b1 = new AtomicBoolean(false);
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var b2 = new AtomicBoolean(false);
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opt.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true));
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assertTrue(b1.get());
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assertFalse(b2.get());
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assertEquals(opt.toString(), "OptionalInt[" + expected + "]");
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}
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@Test(groups = "unit")
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public void testEmpty() {
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checkEmpty(OptionalInt.empty());
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}
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@Test(groups = "unit")
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public void testPresent() {
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checkPresent(OptionalInt.of(INTVAL), INTVAL);
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}
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@Test(groups = "unit")
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public void testStreamEmpty() {
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assertEquals(OptionalInt.empty().stream().toArray(), new int[] { });
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}
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@Test(groups = "unit")
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public void testStreamPresent() {
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assertEquals(OptionalInt.of(INTVAL).stream().toArray(), new int[] { INTVAL });
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}
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}
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