1 /* 2 * Copyright (c) 2016, 2018, 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 jdk.tools.jaotc.utils.NativeOrderOutputStream; 36 import org.junit.Assert; 37 import org.junit.Before; 38 import org.junit.Test; 39 40 import java.nio.ByteBuffer; 41 import java.nio.ByteOrder; 42 43 public class NativeOrderOutputStreamTest { 44 45 private NativeOrderOutputStream target; 46 47 @Before 48 public void setup() { 49 target = new NativeOrderOutputStream(); 50 } 51 52 @Test 53 public void shouldAdd4BytesForInt() { 54 target.putInt(5); 55 Assert.assertEquals(4, target.position()); 56 } 57 58 @Test 59 public void shouldAdd8BytesForLong() { 60 target.putLong(8); 61 Assert.assertEquals(8, target.position()); 62 } 63 64 @Test 65 public void shouldHaveCorrectSizeBeforePatch() { 66 target.patchableInt(); 67 Assert.assertEquals(4, target.position()); 68 } 69 70 @Test 71 public void shouldHaveCorrectSizeAfterPatch() { 72 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 73 patchableInt.set(12); 74 Assert.assertEquals(4, target.position()); 75 } 76 77 @Test 78 public void shouldSetCorrectValueInPatch() { 79 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 80 patchableInt.set(42); 81 Assert.assertEquals(42, getInt(0)); 82 } 83 84 private int getInt(int pos) { 85 ByteBuffer buffer = ByteBuffer.wrap(target.array()); 86 buffer.order(ByteOrder.nativeOrder()); 87 return buffer.getInt(pos); 88 } 89 90 @Test 91 public void shouldPutArrayCorrectly() { 92 target.put(new byte[]{42, 5, 43, 44}); 93 Assert.assertEquals(4, target.position()); 94 Assert.assertEquals(42, target.array()[0]); 95 Assert.assertEquals(4, target.position()); 96 } 97 98 @Test 99 public void shouldOnlyPatchSlot() { 100 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 101 target.putInt(7); 102 patchableInt.set(39); 103 Assert.assertEquals(39, getInt(0)); 104 Assert.assertEquals(7, getInt(4)); 105 } 106 107 @Test 108 public void shouldBeAbleToPatchAnywhere() { 109 target.putInt(19); 110 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 111 patchableInt.set(242); 112 113 Assert.assertEquals(19, getInt(0)); 114 Assert.assertEquals(242, getInt(4)); 115 } 116 117 @Test 118 public void shouldHavePatchableAtRightOffset() { 119 target.putInt(27); 120 Assert.assertEquals(4, target.position()); 121 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 122 Assert.assertEquals(4, patchableInt.position()); 123 } 124 125 @Test 126 public void shouldAlign() { 127 target.putInt(9); 128 target.align(16); 129 target.put(new byte[]{3}); 130 target.align(8); 131 Assert.assertEquals(24, target.position()); 132 } 133 }