164 lines
7.3 KiB
Java
164 lines
7.3 KiB
Java
/*
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* Copyright (c) 2023, 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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/*
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* @test
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* @bug 8302202
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* @summary Testing record patterns with null components
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* @enablePreview
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* @compile NullsInDeconstructionPatterns2.java
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* @run main NullsInDeconstructionPatterns2
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*/
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import java.util.Objects;
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import java.util.function.Function;
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public class NullsInDeconstructionPatterns2 {
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public static void main(String[] args) {
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new NullsInDeconstructionPatterns2().run();
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}
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private void run() {
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run1(this::test1a);
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run1(this::test1b);
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run2(this::test2a);
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run2(this::test2b);
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run3(this::test3a);
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run3(this::test3b);
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run4();
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}
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private void run1(Function<Object, String> method) {
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assertEquals("R1(null)", method.apply(new R1(null)));
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assertEquals("R1(!null)", method.apply(new R1("")));
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}
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private void run2(Function<Object, String> method) {
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assertEquals("R2(null, null)", method.apply(new R2(null, null)));
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assertEquals("R2(!null, null)", method.apply(new R2("", null)));
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assertEquals("R2(null, !null)", method.apply(new R2(null, "")));
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assertEquals("R2(!null, !null)", method.apply(new R2("", "")));
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}
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private void run3(Function<Object, String> method) {
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assertEquals("R3(null, null, null)", method.apply(new R3(null, null, null)));
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assertEquals("R3(!null, null, null)", method.apply(new R3("", null, null)));
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assertEquals("R3(null, !null, null)", method.apply(new R3(null, "", null)));
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assertEquals("R3(!null, !null, null)", method.apply(new R3("", "", null)));
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assertEquals("R3(null, null, !null)", method.apply(new R3(null, null, "")));
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assertEquals("R3(!null, null, !null)", method.apply(new R3("", null, "")));
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assertEquals("R3(null, !null, !null)", method.apply(new R3(null, "", "")));
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assertEquals("R3(!null, !null, !null)", method.apply(new R3("", "", "")));
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}
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private void run4() {
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assertEquals("integer", test4(new R1(0)));
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assertEquals("empty", test4(new R1("")));
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assertEquals("default", test4(new R1("a")));
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}
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private String test1a(Object i) {
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return switch (i) {
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case R1(Object o) when o == null -> "R1(null)";
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case R1(Object o) when o != null -> "R1(!null)";
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default -> "default";
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};
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}
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private String test1b(Object i) {
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return switch (i) {
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case R1(Object o) when o == null -> "R1(null)";
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case R1(Object o) -> "R1(!null)";
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default -> "default";
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};
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}
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private String test2a(Object i) {
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return switch (i) {
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case R2(Object o1, Object o2) when o1 == null && o2 == null -> "R2(null, null)";
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case R2(Object o1, Object o2) when o1 != null && o2 == null -> "R2(!null, null)";
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case R2(Object o1, Object o2) when o1 == null && o2 != null -> "R2(null, !null)";
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case R2(Object o1, Object o2) when o1 != null && o2 != null -> "R2(!null, !null)";
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default -> "default";
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};
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}
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private String test2b(Object i) {
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return switch (i) {
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case R2(Object o1, Object o2) when o1 == null && o2 == null -> "R2(null, null)";
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case R2(Object o1, Object o2) when o1 != null && o2 == null -> "R2(!null, null)";
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case R2(Object o1, Object o2) when o1 == null && o2 != null -> "R2(null, !null)";
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case R2(Object o1, Object o2) -> "R2(!null, !null)";
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default -> "default";
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};
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}
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private String test3a(Object i) {
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return switch (i) {
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 == null && o3 == null -> "R3(null, null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 != null && o2 == null && o3 == null -> "R3(!null, null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 != null && o3 == null -> "R3(null, !null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 != null && o2 != null && o3 == null -> "R3(!null, !null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 == null && o3 != null -> "R3(null, null, !null)";
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case R3(Object o1, Object o2, Object o3) when o1 != null && o2 == null && o3 != null -> "R3(!null, null, !null)";
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 != null && o3 != null -> "R3(null, !null, !null)";
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case R3(Object o1, Object o2, Object o3) when o1 != null && o2 != null && o3 != null -> "R3(!null, !null, !null)";
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default -> "default";
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};
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}
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private String test3b(Object i) {
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return switch (i) {
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 == null && o3 == null -> "R3(null, null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 != null && o2 == null && o3 == null -> "R3(!null, null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 != null && o3 == null -> "R3(null, !null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 != null && o2 != null && o3 == null -> "R3(!null, !null, null)";
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 == null && o3 != null -> "R3(null, null, !null)";
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case R3(Object o1, Object o2, Object o3) when o1 != null && o2 == null && o3 != null -> "R3(!null, null, !null)";
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case R3(Object o1, Object o2, Object o3) when o1 == null && o2 != null && o3 != null -> "R3(null, !null, !null)";
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case R3(Object o1, Object o2, Object o3) -> "R3(!null, !null, !null)";
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default -> "default";
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};
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}
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private String test4(Object i) {
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return switch (i) {
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case R1(Integer o) -> "integer";
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case R1(Object o) when o.toString().isEmpty() -> "empty";
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default -> "default";
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};
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}
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private static void assertEquals(String expected, String actual) {
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if (!Objects.equals(expected, actual)) {
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throw new AssertionError("Unexpected result, expected: " + expected + "," +
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" actual: " + actual);
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}
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}
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record R1(Object o) {}
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record R2(Object o1, Object o2) {}
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record R3(Object o1, Object o2, Object o3) {}
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}
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