1// Copyright 2012 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Flags: --expose-debug-as debug 29// Test the mirror object for objects 30 31function MirrorRefCache(json_refs) { 32 var tmp = eval('(' + json_refs + ')'); 33 this.refs_ = []; 34 for (var i = 0; i < tmp.length; i++) { 35 this.refs_[tmp[i].handle] = tmp[i]; 36 } 37} 38 39MirrorRefCache.prototype.lookup = function(handle) { 40 return this.refs_[handle]; 41}; 42 43function testObjectMirror(obj, cls_name, ctor_name, hasSpecialProperties) { 44 // Create mirror and JSON representation. 45 var mirror = debug.MakeMirror(obj); 46 var serializer = debug.MakeMirrorSerializer(); 47 var json = JSON.stringify(serializer.serializeValue(mirror)); 48 var refs = new MirrorRefCache( 49 JSON.stringify(serializer.serializeReferencedObjects())); 50 51 // Check the mirror hierachy. 52 assertTrue(mirror instanceof debug.Mirror, 'Unexpected mirror hierarchy'); 53 assertTrue(mirror instanceof debug.ValueMirror, 'Unexpected mirror hierarchy'); 54 assertTrue(mirror instanceof debug.ObjectMirror, 'Unexpected mirror hierarchy'); 55 56 // Check the mirror properties. 57 assertTrue(mirror.isObject(), 'Unexpected mirror'); 58 assertEquals('object', mirror.type(), 'Unexpected mirror type'); 59 assertFalse(mirror.isPrimitive(), 'Unexpected primitive mirror'); 60 assertEquals(cls_name, mirror.className(), 'Unexpected mirror class name'); 61 assertTrue(mirror.constructorFunction() instanceof debug.ObjectMirror, 'Unexpected mirror hierarchy'); 62 assertEquals(ctor_name, mirror.constructorFunction().name(), 'Unexpected constructor function name'); 63 assertTrue(mirror.protoObject() instanceof debug.Mirror, 'Unexpected mirror hierarchy'); 64 assertTrue(mirror.prototypeObject() instanceof debug.Mirror, 'Unexpected mirror hierarchy'); 65 assertFalse(mirror.hasNamedInterceptor(), 'No named interceptor expected'); 66 assertFalse(mirror.hasIndexedInterceptor(), 'No indexed interceptor expected'); 67 68 var names = mirror.propertyNames(); 69 var properties = mirror.properties(); 70 assertEquals(names.length, properties.length); 71 for (var i = 0; i < properties.length; i++) { 72 assertTrue(properties[i] instanceof debug.Mirror, 'Unexpected mirror hierarchy'); 73 assertTrue(properties[i] instanceof debug.PropertyMirror, 'Unexpected mirror hierarchy'); 74 assertEquals('property', properties[i].type(), 'Unexpected mirror type'); 75 assertEquals(names[i], properties[i].name(), 'Unexpected property name'); 76 } 77 78 var internalProperties = mirror.internalProperties(); 79 for (var i = 0; i < internalProperties.length; i++) { 80 assertTrue(internalProperties[i] instanceof debug.Mirror, 'Unexpected mirror hierarchy'); 81 assertTrue(internalProperties[i] instanceof debug.InternalPropertyMirror, 'Unexpected mirror hierarchy'); 82 assertEquals('internalProperty', internalProperties[i].type(), 'Unexpected mirror type'); 83 } 84 85 for (var p in obj) { 86 var property_mirror = mirror.property(p); 87 assertTrue(property_mirror instanceof debug.PropertyMirror); 88 assertEquals(p, property_mirror.name()); 89 // If the object has some special properties don't test for these. 90 if (!hasSpecialProperties) { 91 assertEquals(0, property_mirror.attributes(), property_mirror.name()); 92 assertFalse(property_mirror.isReadOnly()); 93 assertTrue(property_mirror.isEnum()); 94 assertTrue(property_mirror.canDelete()); 95 } 96 } 97 98 // Parse JSON representation and check. 99 var fromJSON = eval('(' + json + ')'); 100 assertEquals('object', fromJSON.type, 'Unexpected mirror type in JSON'); 101 assertEquals(cls_name, fromJSON.className, 'Unexpected mirror class name in JSON'); 102 assertEquals(mirror.constructorFunction().handle(), fromJSON.constructorFunction.ref, 'Unexpected constructor function handle in JSON'); 103 assertEquals('function', refs.lookup(fromJSON.constructorFunction.ref).type, 'Unexpected constructor function type in JSON'); 104 assertEquals(ctor_name, refs.lookup(fromJSON.constructorFunction.ref).name, 'Unexpected constructor function name in JSON'); 105 assertEquals(mirror.protoObject().handle(), fromJSON.protoObject.ref, 'Unexpected proto object handle in JSON'); 106 assertEquals(mirror.protoObject().type(), refs.lookup(fromJSON.protoObject.ref).type, 'Unexpected proto object type in JSON'); 107 assertEquals(mirror.prototypeObject().handle(), fromJSON.prototypeObject.ref, 'Unexpected prototype object handle in JSON'); 108 assertEquals(mirror.prototypeObject().type(), refs.lookup(fromJSON.prototypeObject.ref).type, 'Unexpected prototype object type in JSON'); 109 assertEquals(void 0, fromJSON.namedInterceptor, 'No named interceptor expected in JSON'); 110 assertEquals(void 0, fromJSON.indexedInterceptor, 'No indexed interceptor expected in JSON'); 111 112 // Check that the serialization contains all properties. 113 assertEquals(names.length, fromJSON.properties.length, 'Some properties missing in JSON'); 114 for (var j = 0; j < names.length; j++) { 115 var name = names[j]; 116 // Serialization of symbol-named properties to JSON doesn't really 117 // work currently, as they don't get a {name: ...} entry. 118 if (typeof name === 'symbol') continue; 119 var found = false; 120 for (var i = 0; i < fromJSON.properties.length; i++) { 121 if (fromJSON.properties[i].name == name) { 122 // Check that serialized handle is correct. 123 assertEquals(properties[i].value().handle(), fromJSON.properties[i].ref, 'Unexpected serialized handle'); 124 125 // Check that serialized name is correct. 126 assertEquals(properties[i].name(), fromJSON.properties[i].name, 'Unexpected serialized name'); 127 128 // If property type is normal property type is not serialized. 129 if (properties[i].propertyType() != debug.PropertyType.Normal) { 130 assertEquals(properties[i].propertyType(), fromJSON.properties[i].propertyType, 'Unexpected serialized property type'); 131 } else { 132 assertTrue(typeof(fromJSON.properties[i].propertyType) === 'undefined', 'Unexpected serialized property type'); 133 } 134 135 // If there are no attributes attributes are not serialized. 136 if (properties[i].attributes() != debug.PropertyAttribute.None) { 137 assertEquals(properties[i].attributes(), fromJSON.properties[i].attributes, 'Unexpected serialized attributes'); 138 } else { 139 assertTrue(typeof(fromJSON.properties[i].attributes) === 'undefined', 'Unexpected serialized attributes'); 140 } 141 142 // Lookup the serialized object from the handle reference. 143 var o = refs.lookup(fromJSON.properties[i].ref); 144 assertTrue(o != void 0, 'Referenced object is not serialized'); 145 146 assertEquals(properties[i].value().type(), o.type, 'Unexpected serialized property type for ' + name); 147 if (properties[i].value().isPrimitive()) { 148 if (properties[i].value().type() == "null" || 149 properties[i].value().type() == "undefined") { 150 // Null and undefined has no value property. 151 assertFalse("value" in o, 'Unexpected value property for ' + name); 152 } else if (properties[i].value().type() == "number" && 153 !isFinite(properties[i].value().value())) { 154 assertEquals(String(properties[i].value().value()), o.value, 155 'Unexpected serialized property value for ' + name); 156 } else { 157 assertEquals(properties[i].value().value(), o.value, 'Unexpected serialized property value for ' + name); 158 } 159 } else if (properties[i].value().isFunction()) { 160 assertEquals(properties[i].value().source(), o.source, 'Unexpected serialized property value for ' + name); 161 } 162 found = true; 163 } 164 } 165 assertTrue(found, '"' + name + '" not found (' + json + ')'); 166 } 167} 168 169 170function Point(x,y) { 171 this.x_ = x; 172 this.y_ = y; 173} 174 175var object_with_symbol = {}; 176object_with_symbol[Symbol.iterator] = 42; 177 178// Test a number of different objects. 179testObjectMirror({}, 'Object', 'Object'); 180testObjectMirror({'a':1,'b':2}, 'Object', 'Object'); 181testObjectMirror({'1':void 0,'2':null,'f':function pow(x,y){return Math.pow(x,y);}}, 'Object', 'Object'); 182testObjectMirror(new Point(-1.2,2.003), 'Object', 'Point'); 183testObjectMirror(this, 'global', '', true); // Global object has special properties 184testObjectMirror(this.__proto__, 'Object', ''); 185testObjectMirror([], 'Array', 'Array'); 186testObjectMirror([1,2], 'Array', 'Array'); 187testObjectMirror(Object(17), 'Number', 'Number'); 188testObjectMirror(object_with_symbol, 'Object', 'Object'); 189 190// Test circular references. 191o = {}; 192o.o = o; 193testObjectMirror(o, 'Object', 'Object'); 194 195// Test that non enumerable properties are part of the mirror 196global_mirror = debug.MakeMirror(this); 197assertEquals('property', global_mirror.property("Math").type()); 198assertFalse(global_mirror.property("Math").isEnum(), "Math is enumerable" + global_mirror.property("Math").attributes()); 199 200math_mirror = global_mirror.property("Math").value(); 201assertEquals('property', math_mirror.property("E").type()); 202assertFalse(math_mirror.property("E").isEnum(), "Math.E is enumerable"); 203assertTrue(math_mirror.property("E").isReadOnly()); 204assertFalse(math_mirror.property("E").canDelete()); 205 206// Test objects with JavaScript accessors. 207o = {} 208o.__defineGetter__('a', function(){return 'a';}); 209o.__defineSetter__('b', function(){}); 210o.__defineGetter__('c', function(){throw 'c';}); 211o.__defineSetter__('c', function(){throw 'c';}); 212testObjectMirror(o, 'Object', 'Object'); 213mirror = debug.MakeMirror(o); 214// a has getter but no setter. 215assertTrue(mirror.property('a').hasGetter()); 216assertFalse(mirror.property('a').hasSetter()); 217assertEquals(debug.PropertyType.Callbacks, mirror.property('a').propertyType()); 218assertEquals('function', mirror.property('a').getter().type()); 219assertEquals('undefined', mirror.property('a').setter().type()); 220assertEquals('function (){return \'a\';}', mirror.property('a').getter().source()); 221// b has setter but no getter. 222assertFalse(mirror.property('b').hasGetter()); 223assertTrue(mirror.property('b').hasSetter()); 224assertEquals(debug.PropertyType.Callbacks, mirror.property('b').propertyType()); 225assertEquals('undefined', mirror.property('b').getter().type()); 226assertEquals('function', mirror.property('b').setter().type()); 227assertEquals('function (){}', mirror.property('b').setter().source()); 228assertFalse(mirror.property('b').isException()); 229// c has both getter and setter. The getter throws an exception. 230assertTrue(mirror.property('c').hasGetter()); 231assertTrue(mirror.property('c').hasSetter()); 232assertEquals(debug.PropertyType.Callbacks, mirror.property('c').propertyType()); 233assertEquals('function', mirror.property('c').getter().type()); 234assertEquals('function', mirror.property('c').setter().type()); 235assertEquals('function (){throw \'c\';}', mirror.property('c').getter().source()); 236assertEquals('function (){throw \'c\';}', mirror.property('c').setter().source()); 237 238// Test objects with native accessors. 239mirror = debug.MakeMirror(new String('abc')); 240assertTrue(mirror instanceof debug.ObjectMirror); 241assertFalse(mirror.property('length').hasGetter()); 242assertFalse(mirror.property('length').hasSetter()); 243assertTrue(mirror.property('length').isNative()); 244assertEquals('a', mirror.property(0).value().value()); 245assertEquals('b', mirror.property(1).value().value()); 246assertEquals('c', mirror.property(2).value().value()); 247 248// Test value wrapper internal properties. 249mirror = debug.MakeMirror(Object("Capybara")); 250var ip = mirror.internalProperties(); 251assertEquals(1, ip.length); 252assertEquals("[[PrimitiveValue]]", ip[0].name()); 253assertEquals("string", ip[0].value().type()); 254assertEquals("Capybara", ip[0].value().value()); 255 256// Test bound function internal properties. 257mirror = debug.MakeMirror(Number.bind(Array, 2)); 258ip = mirror.internalProperties(); 259assertEquals(3, ip.length); 260var property_map = {}; 261for (var i = 0; i < ip.length; i++) { 262 property_map[ip[i].name()] = ip[i]; 263} 264assertTrue("[[BoundThis]]" in property_map); 265assertEquals("function", property_map["[[BoundThis]]"].value().type()); 266assertEquals(Array, property_map["[[BoundThis]]"].value().value()); 267assertTrue("[[TargetFunction]]" in property_map); 268assertEquals("function", property_map["[[TargetFunction]]"].value().type()); 269assertEquals(Number, property_map["[[TargetFunction]]"].value().value()); 270assertTrue("[[BoundArgs]]" in property_map); 271assertEquals("object", property_map["[[BoundArgs]]"].value().type()); 272assertEquals(1, property_map["[[BoundArgs]]"].value().value().length); 273