95 lines
3.5 KiB
Java
95 lines
3.5 KiB
Java
/*
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* Copyright (c) 2018, 2019, 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 8214031
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* @summary Verify various corner cases with nested switch expressions.
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* @compile ExpressionSwitchBugsInGen.java
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* @run main ExpressionSwitchBugsInGen
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*/
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public class ExpressionSwitchBugsInGen {
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public static void main(String... args) {
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new ExpressionSwitchBugsInGen().test(0, 0, 0, false);
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new ExpressionSwitchBugsInGen().test(0, 0, 1, true);
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new ExpressionSwitchBugsInGen().test(0, 1, 1, false);
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new ExpressionSwitchBugsInGen().test(1, 1, -1, true);
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new ExpressionSwitchBugsInGen().test(1, 12, -1, false);
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new ExpressionSwitchBugsInGen().testCommonSuperType(0, "a", new StringBuilder(), "a");
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new ExpressionSwitchBugsInGen().testCommonSuperType(1, "", new StringBuilder("a"), "a");
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new ExpressionSwitchBugsInGen().testSwitchExpressionInConditional(0, null, -1);
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new ExpressionSwitchBugsInGen().testSwitchExpressionInConditional(1, "", 0);
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new ExpressionSwitchBugsInGen().testSwitchExpressionInConditional(1, 1, 1);
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new ExpressionSwitchBugsInGen().testIntBoxing(0, 10, 10);
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new ExpressionSwitchBugsInGen().testIntBoxing(1, 10, -1);
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}
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private void test(int a, int b, int c, boolean expected) {
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if ( !(switch (a) {
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case 0 -> b == (switch (c) { case 0 -> 0; default -> 1; });
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default -> b == 12;
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})) {
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if (!expected) {
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throw new IllegalStateException();
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}
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} else {
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if (expected) {
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throw new IllegalStateException();
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}
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}
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}
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private void testCommonSuperType(int a, String s1, StringBuilder s2, String expected) {
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String r = (switch (a) {
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case 0 -> s1;
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default -> s2;
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}).toString();
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if (!expected.equals(r)) {
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throw new IllegalStateException();
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}
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}
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private void testSwitchExpressionInConditional(int a, Object o, int expected) {
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int v = a == 0 ? -1
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: switch (o instanceof String ? 0 : 1) {
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case 0 -> 0;
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default -> 1;
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};
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if (v != expected) {
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throw new IllegalStateException();
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}
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}
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private void testIntBoxing(int a, Integer res, int expected) {
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int r = switch (a) {
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case 0 -> res;
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default -> -1;
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};
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if (r != expected) {
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throw new IllegalStateException();
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}
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}
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}
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