1 /* 2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @requires vm.aot 27 * @modules jdk.aot/jdk.tools.jaotc.utils 28 * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.tools.jaotc.test.NativeOrderOutputStreamTest 29 */ 30 31 32 33 package jdk.tools.jaotc.test; 34 35 import java.nio.ByteBuffer; 36 import java.nio.ByteOrder; 37 38 import org.junit.Assert; 39 import org.junit.Test; 40 41 import jdk.tools.jaotc.utils.NativeOrderOutputStream; 42 43 public class NativeOrderOutputStreamTest { 44 45 @Test 46 public void shouldAdd4BytesForInt() { 47 NativeOrderOutputStream target = new NativeOrderOutputStream(); 48 target.putInt(5); 49 Assert.assertEquals(4, target.position()); 50 } 51 52 @Test 53 public void shouldAdd8BytesForLong() { 54 NativeOrderOutputStream target = new NativeOrderOutputStream(); 55 target.putLong(8); 56 Assert.assertEquals(8, target.position()); 57 } 58 59 @Test 60 public void shouldHaveCorrectSizeBeforePatch() { 61 NativeOrderOutputStream target = new NativeOrderOutputStream(); 62 target.patchableInt(); 63 Assert.assertEquals(4, target.position()); 64 } 65 66 @Test 67 public void shouldHaveCorrectSizeAfterPatch() { 68 NativeOrderOutputStream target = new NativeOrderOutputStream(); 69 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 70 patchableInt.set(12); 71 Assert.assertEquals(4, target.position()); 72 } 73 74 @Test 75 public void shouldSetCorrectValueInPatch() { 76 NativeOrderOutputStream target = new NativeOrderOutputStream(); 77 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 78 patchableInt.set(42); 79 Assert.assertEquals(42, getInt(target, 0)); 80 } 81 82 private static int getInt(NativeOrderOutputStream target, int pos) { 83 ByteBuffer buffer = ByteBuffer.wrap(target.array()); 84 buffer.order(ByteOrder.nativeOrder()); 85 return buffer.getInt(pos); 86 } 87 88 @Test 89 public void shouldPutArrayCorrectly() { 90 NativeOrderOutputStream target = new NativeOrderOutputStream(); 91 target.put(new byte[]{42, 5, 43, 44}); 92 Assert.assertEquals(4, target.position()); 93 Assert.assertEquals(42, target.array()[0]); 94 Assert.assertEquals(4, target.position()); 95 } 96 97 @Test 98 public void shouldOnlyPatchSlot() { 99 NativeOrderOutputStream target = new NativeOrderOutputStream(); 100 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 101 target.putInt(7); 102 patchableInt.set(39); 103 Assert.assertEquals(39, getInt(target, 0)); 104 Assert.assertEquals(7, getInt(target, 4)); 105 } 106 107 @Test 108 public void shouldBeAbleToPatchAnywhere() { 109 NativeOrderOutputStream target = new NativeOrderOutputStream(); 110 target.putInt(19); 111 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 112 patchableInt.set(242); 113 114 Assert.assertEquals(19, getInt(target, 0)); 115 Assert.assertEquals(242, getInt(target, 4)); 116 } 117 118 @Test 119 public void shouldHavePatchableAtRightOffset() { 120 NativeOrderOutputStream target = new NativeOrderOutputStream(); 121 target.putInt(27); 122 Assert.assertEquals(4, target.position()); 123 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 124 Assert.assertEquals(4, patchableInt.position()); 125 } 126 127 @Test 128 public void shouldAlign() { 129 NativeOrderOutputStream target = new NativeOrderOutputStream(); 130 target.putInt(9); 131 target.align(16); 132 target.put(new byte[]{3}); 133 target.align(8); 134 Assert.assertEquals(24, target.position()); 135 } 136 }