src/test/java/com/android/tools/r8/ir/optimize/checkcast/TrivialArrayCheckCastTest.java

// Copyright (c) 2019, 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.checkcast;

import com.android.tools.r8.NeverInline;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.utils.AndroidApiLevel;
import com.android.tools.r8.utils.InternalOptions;
import com.android.tools.r8.utils.StringUtils;
import org.junit.Test;

/** Regression test for b/123269162. */
public class TrivialArrayCheckCastTest extends TestBase {

  @Test
  public void test() throws Exception {
    String expectedOutput =
        StringUtils.lines(
            "Caught NullPointerException", "Caught NullPointerException",
            "Caught NullPointerException", "Caught NullPointerException",
            "Caught NullPointerException", "Caught NullPointerException",
            "Caught NullPointerException", "Caught NullPointerException",
            "Caught NullPointerException", "Caught NullPointerException");

    testForJvm().addTestClasspath().run(TestClass.class).assertSuccessWithOutput(expectedOutput);

    InternalOptions options = new InternalOptions();
    options.minApiLevel = AndroidApiLevel.I_MR1.getLevel();
    assert options.canHaveArtCheckCastVerifierBug();

    testForR8(Backend.DEX)
        .addInnerClasses(TrivialArrayCheckCastTest.class)
        .addKeepMainRule(TestClass.class)
        .enableInliningAnnotations()
        .setMinApi(AndroidApiLevel.I_MR1)
        .run(TestClass.class)
        .assertSuccessWithOutput(expectedOutput);
  }

  static class TestClass {

    public static void main(String[] args) {
      testBooleanArray();
      testByteArray();
      testCharArray();
      testDoubleArray();
      testFloatArray();
      testFloatArrayNested();
      testIntArray();
      testLongArray();
      testObjectArray();
      testShortArray();
    }

    @NeverInline
    private static void testBooleanArray() {
      boolean[] array = (boolean[]) null;
      try {
        boolean value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testByteArray() {
      byte[] array = (byte[]) null;
      try {
        byte value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testCharArray() {
      char[] array = (char[]) null;
      try {
        char value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testDoubleArray() {
      double[] array = (double[]) null;
      try {
        double value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testFloatArray() {
      float[] array = (float[]) null;
      try {
        float value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testFloatArrayNested() {
      float[][] nestedArray = (float[][]) null;
      try {
        float[] array = nestedArray[42];
        float value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testIntArray() {
      int[] array = (int[]) null;
      try {
        int value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testLongArray() {
      long[] array = (long[]) null;
      try {
        long value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testObjectArray() {
      Object[] array = (Object[]) null;
      try {
        Object value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }

    @NeverInline
    private static void testShortArray() {
      short[] array = (short[]) null;
      try {
        short value = array[42];
        System.out.println("Read value: " + value);
      } catch (ArrayIndexOutOfBoundsException e) {
        System.out.println("Caught ArrayIndexOutOfBoundsException");
      } catch (NullPointerException e) {
        System.out.println("Caught NullPointerException");
      }
    }
  }
}