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267 lines
13 KiB
267 lines
13 KiB
// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --expose-debug-as debug
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// Test the mirror object for objects
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function MirrorRefCache(json_refs) {
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var tmp = eval('(' + json_refs + ')');
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this.refs_ = [];
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for (var i = 0; i < tmp.length; i++) {
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this.refs_[tmp[i].handle] = tmp[i];
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}
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}
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MirrorRefCache.prototype.lookup = function(handle) {
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return this.refs_[handle];
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};
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function testObjectMirror(obj, cls_name, ctor_name, hasSpecialProperties) {
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// Create mirror and JSON representation.
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var mirror = debug.MakeMirror(obj);
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var serializer = debug.MakeMirrorSerializer();
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var json = JSON.stringify(serializer.serializeValue(mirror));
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var refs = new MirrorRefCache(
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JSON.stringify(serializer.serializeReferencedObjects()));
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// Check the mirror hierachy.
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assertTrue(mirror instanceof debug.Mirror, 'Unexpected mirror hierarchy');
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assertTrue(mirror instanceof debug.ValueMirror, 'Unexpected mirror hierarchy');
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assertTrue(mirror instanceof debug.ObjectMirror, 'Unexpected mirror hierarchy');
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// Check the mirror properties.
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assertTrue(mirror.isObject(), 'Unexpected mirror');
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assertEquals('object', mirror.type(), 'Unexpected mirror type');
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assertFalse(mirror.isPrimitive(), 'Unexpected primitive mirror');
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assertEquals(cls_name, mirror.className(), 'Unexpected mirror class name');
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assertTrue(mirror.constructorFunction() instanceof debug.ObjectMirror, 'Unexpected mirror hierarchy');
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assertEquals(ctor_name, mirror.constructorFunction().name(), 'Unexpected constructor function name');
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assertTrue(mirror.protoObject() instanceof debug.Mirror, 'Unexpected mirror hierarchy');
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assertTrue(mirror.prototypeObject() instanceof debug.Mirror, 'Unexpected mirror hierarchy');
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assertFalse(mirror.hasNamedInterceptor(), 'No named interceptor expected');
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assertFalse(mirror.hasIndexedInterceptor(), 'No indexed interceptor expected');
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var names = mirror.propertyNames();
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var properties = mirror.properties();
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assertEquals(names.length, properties.length);
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for (var i = 0; i < properties.length; i++) {
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assertTrue(properties[i] instanceof debug.Mirror, 'Unexpected mirror hierarchy');
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assertTrue(properties[i] instanceof debug.PropertyMirror, 'Unexpected mirror hierarchy');
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assertEquals('property', properties[i].type(), 'Unexpected mirror type');
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assertEquals(names[i], properties[i].name(), 'Unexpected property name');
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}
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var internalProperties = mirror.internalProperties();
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for (var i = 0; i < internalProperties.length; i++) {
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assertTrue(internalProperties[i] instanceof debug.Mirror, 'Unexpected mirror hierarchy');
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assertTrue(internalProperties[i] instanceof debug.InternalPropertyMirror, 'Unexpected mirror hierarchy');
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assertEquals('internalProperty', internalProperties[i].type(), 'Unexpected mirror type');
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}
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for (var p in obj) {
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var property_mirror = mirror.property(p);
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assertTrue(property_mirror instanceof debug.PropertyMirror);
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assertEquals(p, property_mirror.name());
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// If the object has some special properties don't test for these.
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if (!hasSpecialProperties) {
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assertEquals(0, property_mirror.attributes(), property_mirror.name());
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assertFalse(property_mirror.isReadOnly());
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assertTrue(property_mirror.isEnum());
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assertTrue(property_mirror.canDelete());
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}
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}
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// Parse JSON representation and check.
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var fromJSON = eval('(' + json + ')');
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assertEquals('object', fromJSON.type, 'Unexpected mirror type in JSON');
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assertEquals(cls_name, fromJSON.className, 'Unexpected mirror class name in JSON');
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assertEquals(mirror.constructorFunction().handle(), fromJSON.constructorFunction.ref, 'Unexpected constructor function handle in JSON');
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assertEquals('function', refs.lookup(fromJSON.constructorFunction.ref).type, 'Unexpected constructor function type in JSON');
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assertEquals(ctor_name, refs.lookup(fromJSON.constructorFunction.ref).name, 'Unexpected constructor function name in JSON');
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assertEquals(mirror.protoObject().handle(), fromJSON.protoObject.ref, 'Unexpected proto object handle in JSON');
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assertEquals(mirror.protoObject().type(), refs.lookup(fromJSON.protoObject.ref).type, 'Unexpected proto object type in JSON');
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assertEquals(mirror.prototypeObject().handle(), fromJSON.prototypeObject.ref, 'Unexpected prototype object handle in JSON');
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assertEquals(mirror.prototypeObject().type(), refs.lookup(fromJSON.prototypeObject.ref).type, 'Unexpected prototype object type in JSON');
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assertEquals(void 0, fromJSON.namedInterceptor, 'No named interceptor expected in JSON');
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assertEquals(void 0, fromJSON.indexedInterceptor, 'No indexed interceptor expected in JSON');
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// Check that the serialization contains all properties.
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assertEquals(names.length, fromJSON.properties.length, 'Some properties missing in JSON');
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for (var j = 0; j < names.length; j++) {
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var name = names[j];
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// Serialization of symbol-named properties to JSON doesn't really
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// work currently, as they don't get a {name: ...} entry.
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if (typeof name === 'symbol') continue;
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var found = false;
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for (var i = 0; i < fromJSON.properties.length; i++) {
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if (fromJSON.properties[i].name == name) {
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// Check that serialized handle is correct.
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assertEquals(properties[i].value().handle(), fromJSON.properties[i].ref, 'Unexpected serialized handle');
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// Check that serialized name is correct.
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assertEquals(properties[i].name(), fromJSON.properties[i].name, 'Unexpected serialized name');
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assertEquals(properties[i].propertyType(), fromJSON.properties[i].propertyType, 'Unexpected serialized property type');
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// If there are no attributes attributes are not serialized.
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if (properties[i].attributes() != debug.PropertyAttribute.None) {
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assertEquals(properties[i].attributes(), fromJSON.properties[i].attributes, 'Unexpected serialized attributes');
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} else {
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assertTrue(typeof(fromJSON.properties[i].attributes) === 'undefined', 'Unexpected serialized attributes');
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}
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// Lookup the serialized object from the handle reference.
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var o = refs.lookup(fromJSON.properties[i].ref);
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assertTrue(o != void 0, 'Referenced object is not serialized');
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assertEquals(properties[i].value().type(), o.type, 'Unexpected serialized property type for ' + name);
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if (properties[i].value().isPrimitive()) {
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if (properties[i].value().type() == "null" ||
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properties[i].value().type() == "undefined") {
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// Null and undefined has no value property.
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assertFalse("value" in o, 'Unexpected value property for ' + name);
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} else if (properties[i].value().type() == "number" &&
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!isFinite(properties[i].value().value())) {
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assertEquals(String(properties[i].value().value()), o.value,
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'Unexpected serialized property value for ' + name);
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} else {
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assertEquals(properties[i].value().value(), o.value, 'Unexpected serialized property value for ' + name);
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}
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} else if (properties[i].value().isFunction()) {
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assertEquals(properties[i].value().source(), o.source, 'Unexpected serialized property value for ' + name);
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}
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found = true;
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}
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}
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assertTrue(found, '"' + name + '" not found (' + json + ')');
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}
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}
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function Point(x,y) {
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this.x_ = x;
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this.y_ = y;
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}
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var object_with_symbol = {};
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object_with_symbol[Symbol.iterator] = 42;
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// Test a number of different objects.
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testObjectMirror({}, 'Object', 'Object');
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testObjectMirror({'a':1,'b':2}, 'Object', 'Object');
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testObjectMirror({'1':void 0,'2':null,'f':function pow(x,y){return Math.pow(x,y);}}, 'Object', 'Object');
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testObjectMirror(new Point(-1.2,2.003), 'Object', 'Point');
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testObjectMirror(this, 'global', '', true); // Global object has special properties
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testObjectMirror(this.__proto__, 'Object', '');
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testObjectMirror([], 'Array', 'Array');
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testObjectMirror([1,2], 'Array', 'Array');
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testObjectMirror(Object(17), 'Number', 'Number');
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testObjectMirror(object_with_symbol, 'Object', 'Object');
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// Test circular references.
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o = {};
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o.o = o;
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testObjectMirror(o, 'Object', 'Object');
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// Test that non enumerable properties are part of the mirror
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global_mirror = debug.MakeMirror(this);
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assertEquals('property', global_mirror.property("Math").type());
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assertFalse(global_mirror.property("Math").isEnum(), "Math is enumerable" + global_mirror.property("Math").attributes());
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math_mirror = global_mirror.property("Math").value();
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assertEquals('property', math_mirror.property("E").type());
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assertFalse(math_mirror.property("E").isEnum(), "Math.E is enumerable");
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assertTrue(math_mirror.property("E").isReadOnly());
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assertFalse(math_mirror.property("E").canDelete());
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// Test objects with JavaScript accessors.
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o = {}
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o.__defineGetter__('a', function(){return 'a';});
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o.__defineSetter__('b', function(){});
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o.__defineGetter__('c', function(){throw 'c';});
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o.__defineSetter__('c', function(){throw 'c';});
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testObjectMirror(o, 'Object', 'Object');
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mirror = debug.MakeMirror(o);
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// a has getter but no setter.
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assertTrue(mirror.property('a').hasGetter());
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assertFalse(mirror.property('a').hasSetter());
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assertEquals(debug.PropertyType.AccessorConstant, mirror.property('a').propertyType());
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assertEquals('function', mirror.property('a').getter().type());
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assertEquals('undefined', mirror.property('a').setter().type());
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assertEquals('function (){return \'a\';}', mirror.property('a').getter().source());
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// b has setter but no getter.
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assertFalse(mirror.property('b').hasGetter());
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assertTrue(mirror.property('b').hasSetter());
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assertEquals(debug.PropertyType.AccessorConstant, mirror.property('b').propertyType());
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assertEquals('undefined', mirror.property('b').getter().type());
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assertEquals('function', mirror.property('b').setter().type());
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assertEquals('function (){}', mirror.property('b').setter().source());
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assertFalse(mirror.property('b').isException());
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// c has both getter and setter. The getter throws an exception.
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assertTrue(mirror.property('c').hasGetter());
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assertTrue(mirror.property('c').hasSetter());
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assertEquals(debug.PropertyType.AccessorConstant, mirror.property('c').propertyType());
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assertEquals('function', mirror.property('c').getter().type());
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assertEquals('function', mirror.property('c').setter().type());
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assertEquals('function (){throw \'c\';}', mirror.property('c').getter().source());
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assertEquals('function (){throw \'c\';}', mirror.property('c').setter().source());
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// Test objects with native accessors.
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mirror = debug.MakeMirror(new String('abc'));
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assertTrue(mirror instanceof debug.ObjectMirror);
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assertFalse(mirror.property('length').hasGetter());
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assertFalse(mirror.property('length').hasSetter());
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assertTrue(mirror.property('length').isNative());
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assertEquals('a', mirror.property(0).value().value());
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assertEquals('b', mirror.property(1).value().value());
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assertEquals('c', mirror.property(2).value().value());
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// Test value wrapper internal properties.
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mirror = debug.MakeMirror(Object("Capybara"));
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var ip = mirror.internalProperties();
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assertEquals(1, ip.length);
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assertEquals("[[PrimitiveValue]]", ip[0].name());
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assertEquals("string", ip[0].value().type());
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assertEquals("Capybara", ip[0].value().value());
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// Test bound function internal properties.
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mirror = debug.MakeMirror(Number.bind(Array, 2));
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ip = mirror.internalProperties();
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assertEquals(3, ip.length);
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var property_map = {};
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for (var i = 0; i < ip.length; i++) {
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property_map[ip[i].name()] = ip[i];
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}
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assertTrue("[[BoundThis]]" in property_map);
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assertEquals("function", property_map["[[BoundThis]]"].value().type());
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assertEquals(Array, property_map["[[BoundThis]]"].value().value());
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assertTrue("[[TargetFunction]]" in property_map);
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assertEquals("function", property_map["[[TargetFunction]]"].value().type());
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assertEquals(Number, property_map["[[TargetFunction]]"].value().value());
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assertTrue("[[BoundArgs]]" in property_map);
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assertEquals("object", property_map["[[BoundArgs]]"].value().type());
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assertEquals(1, property_map["[[BoundArgs]]"].value().value().length);
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