1 /* 2 * Copyright (c) 2016, 2017, 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 * @requires vm.bits == "64" & (os.arch == "amd64" | os.arch == "x86_64") 28 * @modules jdk.aot/jdk.tools.jaotc.utils 29 * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.tools.jaotc.test.NativeOrderOutputStreamTest 30 */ 31 32 package jdk.tools.jaotc.test; 33 34 import jdk.tools.jaotc.utils.NativeOrderOutputStream; 35 import org.junit.Assert; 36 import org.junit.Before; 37 import org.junit.Test; 38 39 import java.nio.ByteBuffer; 40 import java.nio.ByteOrder; 41 42 public class NativeOrderOutputStreamTest { 43 44 private NativeOrderOutputStream target; 45 46 @Before 47 public void setup() { 48 target = new NativeOrderOutputStream(); 49 } 50 51 @Test 52 public void shouldAdd4BytesForInt() { 53 target.putInt(5); 54 Assert.assertEquals(4, target.position()); 55 } 56 57 @Test 58 public void shouldAdd8BytesForLong() { 59 target.putLong(8); 60 Assert.assertEquals(8, target.position()); 61 } 62 63 @Test 64 public void shouldHaveCorrectSizeBeforePatch() { 65 target.patchableInt(); 66 Assert.assertEquals(4, target.position()); 67 } 68 69 @Test 70 public void shouldHaveCorrectSizeAfterPatch() { 71 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 72 patchableInt.set(12); 73 Assert.assertEquals(4, target.position()); 74 } 75 76 @Test 77 public void shouldSetCorrectValueInPatch() { 78 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 79 patchableInt.set(42); 80 Assert.assertEquals(42, getInt(0)); 81 } 82 83 private int getInt(int pos) { 84 ByteBuffer buffer = ByteBuffer.wrap(target.array()); 85 buffer.order(ByteOrder.nativeOrder()); 86 return buffer.getInt(pos); 87 } 88 89 @Test 90 public void shouldPutArrayCorrectly() { 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.PatchableInt patchableInt = target.patchableInt(); 100 target.putInt(7); 101 patchableInt.set(39); 102 Assert.assertEquals(39, getInt(0)); 103 Assert.assertEquals(7, getInt(4)); 104 } 105 106 @Test 107 public void shouldBeAbleToPatchAnywhere() { 108 target.putInt(19); 109 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 110 patchableInt.set(242); 111 112 Assert.assertEquals(19, getInt(0)); 113 Assert.assertEquals(242, getInt(4)); 114 } 115 116 @Test 117 public void shouldHavePatchableAtRightOffset() { 118 target.putInt(27); 119 Assert.assertEquals(4, target.position()); 120 NativeOrderOutputStream.PatchableInt patchableInt = target.patchableInt(); 121 Assert.assertEquals(4, patchableInt.position()); 122 } 123 124 @Test 125 public void shouldAlign() { 126 target.putInt(9); 127 target.align(16); 128 target.put(new byte[]{3}); 129 target.align(8); 130 Assert.assertEquals(24, target.position()); 131 } 132 }