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Side by Side Diff: test/mjsunit/mirror-object.js

Issue 2566103002: [debug-wrappers] remove mirror tests. (Closed)
Patch Set: Created 4 years ago
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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
31 function 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
39 MirrorRefCache.prototype.lookup = function(handle) {
40 return this.refs_[handle];
41 };
42
43 function 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, 'Unexpe cted mirror hierarchy');
62 assertEquals(ctor_name, mirror.constructorFunction().name(), 'Unexpected const ructor function name');
63 assertTrue(mirror.protoObject() instanceof debug.Mirror, 'Unexpected mirror hi erarchy');
64 assertTrue(mirror.prototypeObject() instanceof debug.Mirror, 'Unexpected mirro r 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 hierarc hy');
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, 'U nexpected mirror hierarchy');
82 assertEquals('internalProperty', internalProperties[i].type(), 'Unexpected m irror 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 JS ON');
102 assertEquals(mirror.constructorFunction().handle(), fromJSON.constructorFuncti on.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, 'U nexpected constructor function name in JSON');
105 assertEquals(mirror.protoObject().handle(), fromJSON.protoObject.ref, 'Unexpec ted 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.prototypeOb ject.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 expe cted in JSON');
111
112 // Check that the serialization contains all properties.
113 assertEquals(names.length, fromJSON.properties.length, 'Some properties missin g 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, 'Unexpec ted serialized name');
127
128 assertEquals(properties[i].propertyType(), fromJSON.properties[i].proper tyType, 'Unexpected serialized property type');
129
130 // If there are no attributes attributes are not serialized.
131 if (properties[i].attributes() != debug.PropertyAttribute.None) {
132 assertEquals(properties[i].attributes(), fromJSON.properties[i].attrib utes, 'Unexpected serialized attributes');
133 } else {
134 assertTrue(typeof(fromJSON.properties[i].attributes) === 'undefined', 'Unexpected serialized attributes');
135 }
136
137 // Lookup the serialized object from the handle reference.
138 var o = refs.lookup(fromJSON.properties[i].ref);
139 assertTrue(o != void 0, 'Referenced object is not serialized');
140
141 assertEquals(properties[i].value().type(), o.type, 'Unexpected serialize d property type for ' + name);
142 if (properties[i].value().isPrimitive()) {
143 if (properties[i].value().type() == "null" ||
144 properties[i].value().type() == "undefined") {
145 // Null and undefined has no value property.
146 assertFalse("value" in o, 'Unexpected value property for ' + name);
147 } else if (properties[i].value().type() == "number" &&
148 !isFinite(properties[i].value().value())) {
149 assertEquals(String(properties[i].value().value()), o.value,
150 'Unexpected serialized property value for ' + name);
151 } else {
152 assertEquals(properties[i].value().value(), o.value, 'Unexpected ser ialized property value for ' + name);
153 }
154 } else if (properties[i].value().isFunction()) {
155 assertEquals(properties[i].value().source(), o.source, 'Unexpected ser ialized property value for ' + name);
156 }
157 found = true;
158 }
159 }
160 assertTrue(found, '"' + name + '" not found (' + json + ')');
161 }
162 }
163
164
165 function Point(x,y) {
166 this.x_ = x;
167 this.y_ = y;
168 }
169
170 var object_with_symbol = {};
171 object_with_symbol[Symbol.iterator] = 42;
172
173 // Test a number of different objects.
174 testObjectMirror({}, 'Object', 'Object');
175 testObjectMirror({'a':1,'b':2}, 'Object', 'Object');
176 testObjectMirror({'1':void 0,'2':null,'f':function pow(x,y){return Math.pow(x,y) ;}}, 'Object', 'Object');
177 testObjectMirror(new Point(-1.2,2.003), 'Object', 'Point');
178 testObjectMirror(this, 'global', '', true); // Global object has special proper ties
179 testObjectMirror(this.__proto__, 'Object', '');
180 testObjectMirror([], 'Array', 'Array');
181 testObjectMirror([1,2], 'Array', 'Array');
182 testObjectMirror(Object(17), 'Number', 'Number');
183 testObjectMirror(object_with_symbol, 'Object', 'Object');
184
185 // Test circular references.
186 o = {};
187 o.o = o;
188 testObjectMirror(o, 'Object', 'Object');
189
190 // Test that non enumerable properties are part of the mirror
191 global_mirror = debug.MakeMirror(this);
192 assertEquals('property', global_mirror.property("Math").type());
193 assertFalse(global_mirror.property("Math").isEnum(), "Math is enumerable" + glob al_mirror.property("Math").attributes());
194
195 math_mirror = global_mirror.property("Math").value();
196 assertEquals('property', math_mirror.property("E").type());
197 assertFalse(math_mirror.property("E").isEnum(), "Math.E is enumerable");
198 assertTrue(math_mirror.property("E").isReadOnly());
199 assertFalse(math_mirror.property("E").canDelete());
200
201 // Test objects with JavaScript accessors.
202 o = {}
203 o.__defineGetter__('a', function (){return 'a';});
204 o.__defineSetter__('b', function (){});
205 o.__defineGetter__('c', function (){throw 'c';});
206 o.__defineSetter__('c', function (){throw 'c';});
207 testObjectMirror(o, 'Object', 'Object');
208 mirror = debug.MakeMirror(o);
209 // a has getter but no setter.
210 assertTrue(mirror.property('a').hasGetter());
211 assertFalse(mirror.property('a').hasSetter());
212 assertEquals(debug.PropertyType.AccessorConstant, mirror.property('a').propertyT ype());
213 assertEquals('function', mirror.property('a').getter().type());
214 assertEquals('undefined', mirror.property('a').setter().type());
215 assertEquals('function (){return \'a\';}', mirror.property('a').getter().source( ));
216 // b has setter but no getter.
217 assertFalse(mirror.property('b').hasGetter());
218 assertTrue(mirror.property('b').hasSetter());
219 assertEquals(debug.PropertyType.AccessorConstant, mirror.property('b').propertyT ype());
220 assertEquals('undefined', mirror.property('b').getter().type());
221 assertEquals('function', mirror.property('b').setter().type());
222 assertEquals('function (){}', mirror.property('b').setter().source());
223 assertFalse(mirror.property('b').isException());
224 // c has both getter and setter. The getter throws an exception.
225 assertTrue(mirror.property('c').hasGetter());
226 assertTrue(mirror.property('c').hasSetter());
227 assertEquals(debug.PropertyType.AccessorConstant, mirror.property('c').propertyT ype());
228 assertEquals('function', mirror.property('c').getter().type());
229 assertEquals('function', mirror.property('c').setter().type());
230 assertEquals('function (){throw \'c\';}', mirror.property('c').getter().source() );
231 assertEquals('function (){throw \'c\';}', mirror.property('c').setter().source() );
232
233 // Test objects with native accessors.
234 mirror = debug.MakeMirror(new String('abc'));
235 assertTrue(mirror instanceof debug.ObjectMirror);
236 assertFalse(mirror.property('length').hasGetter());
237 assertFalse(mirror.property('length').hasSetter());
238 assertTrue(mirror.property('length').isNative());
239 assertEquals('a', mirror.property(0).value().value());
240 assertEquals('b', mirror.property(1).value().value());
241 assertEquals('c', mirror.property(2).value().value());
242
243 // Test value wrapper internal properties.
244 mirror = debug.MakeMirror(Object("Capybara"));
245 var ip = mirror.internalProperties();
246 assertEquals(1, ip.length);
247 assertEquals("[[PrimitiveValue]]", ip[0].name());
248 assertEquals("string", ip[0].value().type());
249 assertEquals("Capybara", ip[0].value().value());
250
251 // Test bound function internal properties.
252 mirror = debug.MakeMirror(Number.bind(Array, 2));
253 ip = mirror.internalProperties();
254 assertEquals(3, ip.length);
255 var property_map = {};
256 for (var i = 0; i < ip.length; i++) {
257 property_map[ip[i].name()] = ip[i];
258 }
259 assertTrue("[[BoundThis]]" in property_map);
260 assertEquals("function", property_map["[[BoundThis]]"].value().type());
261 assertEquals(Array, property_map["[[BoundThis]]"].value().value());
262 assertTrue("[[TargetFunction]]" in property_map);
263 assertEquals("function", property_map["[[TargetFunction]]"].value().type());
264 assertEquals(Number, property_map["[[TargetFunction]]"].value().value());
265 assertTrue("[[BoundArgs]]" in property_map);
266 assertEquals("object", property_map["[[BoundArgs]]"].value().type());
267 assertEquals(1, property_map["[[BoundArgs]]"].value().value().length);
268
269 // Test JSProxy internal properties.
270 var target = {};
271 var handler = {
272 get: function (target, name, receiver) {
273 return target[name];
274 },
275 set: function(target, name, value, receiver) {
276 target[name] = value;
277 return value;
278 }
279 }
280 ip = debug.ObjectMirror.GetInternalProperties(new Proxy(target, handler));
281 assertEquals(3, ip.length);
282 var property_map = {};
283 for (var i = 0; i < ip.length; i++) {
284 property_map[ip[i].name()] = ip[i];
285 }
286 assertTrue("[[Target]]" in property_map);
287 assertEquals(target, property_map["[[Target]]"].value().value());
288 assertTrue("[[Handler]]" in property_map);
289 assertEquals(handler, property_map["[[Handler]]"].value().value());
290 assertTrue("[[IsRevoked]]" in property_map);
291 assertEquals(false, property_map["[[IsRevoked]]"].value().value());
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