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annotate truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/ChildrenNodesTest.java @ 22241:14e6dfb1ef05

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Truffle/Testing: massive rework of tests to accommodate recent instrumentation change with respect to "applyInstrumentation" - Caused by lack of a "vm" known to the Accessor during most testing, making the Instrumenter unavailable, which is now required to create a CallTarget - Modified the Instrumenter/Accessor with a static field that can be reflectively "poked" with a vm value for testing - Create a pair of methods to globally enable/disable testing mode to modify that static field and restore it when tests complete.
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Tue, 22 Sep 2015 20:31:19 -0700
parents dc83cc1f94f2
children 0d36601f233e
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.api.test;
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24
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25 import com.oracle.truffle.api.CallTarget;
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26 import com.oracle.truffle.api.Truffle;
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27 import com.oracle.truffle.api.TruffleRuntime;
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28 import com.oracle.truffle.api.frame.VirtualFrame;
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29 import com.oracle.truffle.api.nodes.Node;
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30 import com.oracle.truffle.api.nodes.RootNode;
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31 import com.oracle.truffle.api.test.utilities.InstrumentationTestMode;
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32
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33 import java.util.Iterator;
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34
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35 import org.junit.After;
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36 import org.junit.Assert;
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37 import org.junit.Before;
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38 import org.junit.Test;
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40 /**
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41 * <h3>Creating an Array of Children Nodes</h3>
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42 *
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43 * <p>
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44 * An array of children nodes can be used as a field in a parent node. The field has to be annotated
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45 * with {@link com.oracle.truffle.api.nodes.Node.Children} and must be declared private and final.
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46 * Before assigning the field in the parent node constructor, {@link Node#adoptChildren} must be
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47 * called in order to update the parent pointers in the child nodes. After filling the array with
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48 * its first values, it must never be changed. It is only possible to call {@link Node#replace} on a
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49 * child node.
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50 * </p>
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51 *
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52 * <p>
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53 * The next part of the Truffle API introduction is at
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54 * {@link com.oracle.truffle.api.test.FinalFieldTest}.
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55 * </p>
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56 */
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57 public class ChildrenNodesTest {
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58
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59 @Before
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60 public void before() throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
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61 InstrumentationTestMode.set(true);
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62 }
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63
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64 @After
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65 public void after() throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
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66 InstrumentationTestMode.set(false);
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67 }
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68
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69 @Test
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70 public void test() {
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71 TruffleRuntime runtime = Truffle.getRuntime();
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72 TestChildNode firstChild = new TestChildNode();
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73 TestChildNode secondChild = new TestChildNode();
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74 TestRootNode rootNode = new TestRootNode(new TestChildNode[]{firstChild, secondChild});
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75 CallTarget target = runtime.createCallTarget(rootNode);
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76 Assert.assertEquals(rootNode, firstChild.getParent());
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77 Assert.assertEquals(rootNode, secondChild.getParent());
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78 Iterator<Node> iterator = rootNode.getChildren().iterator();
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79 Assert.assertEquals(firstChild, iterator.next());
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80 Assert.assertEquals(secondChild, iterator.next());
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81 Assert.assertFalse(iterator.hasNext());
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82 Object result = target.call();
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83 Assert.assertEquals(42, result);
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84 }
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85
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86 class TestRootNode extends RootNode {
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87
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88 @Children private final TestChildNode[] children;
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89
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90 public TestRootNode(TestChildNode[] children) {
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91 super(TestingLanguage.class, null, null);
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92 this.children = children;
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93 }
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94
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95 @Override
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96 public Object execute(VirtualFrame frame) {
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97 int sum = 0;
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98 for (int i = 0; i < children.length; ++i) {
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99 sum += children[i].execute();
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100 }
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101 return sum;
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102 }
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103 }
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104
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105 class TestChildNode extends Node {
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106
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107 public TestChildNode() {
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108 super(null);
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109 }
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110
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111 public int execute() {
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112 return 21;
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113 }
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114 }
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115
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116 @Test
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117 public void testMultipleChildrenFields() {
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118 TruffleRuntime runtime = Truffle.getRuntime();
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119 TestChildNode firstChild = new TestChildNode();
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120 TestChildNode secondChild = new TestChildNode();
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121 TestChildNode thirdChild = new TestChildNode();
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122 TestChildNode forthChild = new TestChildNode();
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123 TestRootNode rootNode = new TestRoot2Node(new TestChildNode[]{firstChild, secondChild}, new TestChildNode[]{thirdChild, forthChild});
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124 CallTarget target = runtime.createCallTarget(rootNode);
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125 Assert.assertEquals(rootNode, firstChild.getParent());
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126 Assert.assertEquals(rootNode, secondChild.getParent());
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127 Assert.assertEquals(rootNode, thirdChild.getParent());
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128 Assert.assertEquals(rootNode, forthChild.getParent());
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129 Iterator<Node> iterator = rootNode.getChildren().iterator();
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130 Assert.assertEquals(firstChild, iterator.next());
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131 Assert.assertEquals(secondChild, iterator.next());
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132 Assert.assertEquals(thirdChild, iterator.next());
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133 Assert.assertEquals(forthChild, iterator.next());
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134 Assert.assertFalse(iterator.hasNext());
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135 Object result = target.call();
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136 Assert.assertEquals(2 * 42, result);
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137 }
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138
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139 class TestRoot2Node extends TestRootNode {
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140 @Children private final TestChildNode[] children1;
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141 @Children private final TestChildNode[] children2;
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142
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143 public TestRoot2Node(TestChildNode[] children1, TestChildNode[] children2) {
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144 super(new TestChildNode[0]);
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145 this.children1 = children1;
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146 this.children2 = children2;
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147 }
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148
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149 @Override
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150 public Object execute(VirtualFrame frame) {
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151 int sum = 0;
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152 for (int i = 0; i < children1.length; ++i) {
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153 sum += children1[i].execute();
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154 }
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155 for (int i = 0; i < children2.length; ++i) {
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156 sum += children2[i].execute();
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157 }
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158 return sum;
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159 }
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160 }
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161 }