| // Copyright (c) 2022, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.ir.optimize.string; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class StringBuilderWithAppendNullCharArrayTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("testWithToString passed", "testWithoutToString passed"); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| try { |
| testWithToString(); |
| throw new RuntimeException(); |
| } catch (NullPointerException e) { |
| System.out.println("testWithToString passed"); |
| } |
| try { |
| testWithoutToString(); |
| throw new RuntimeException(); |
| } catch (NullPointerException e) { |
| System.out.println("testWithoutToString passed"); |
| } |
| } |
| |
| static void testWithToString() { |
| char[] chars = null; |
| String string = new StringBuilder().append(chars).toString(); |
| System.out.println(string); |
| } |
| |
| static void testWithoutToString() { |
| char[] chars = null; |
| new StringBuilder().append(chars); |
| } |
| } |
| } |