1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Flags: --expose-debug-as debug 6 // Test the mirror object for symbols. 7 8 function testSymbolMirror(symbol, description) { 9 // Create mirror and JSON representation. 10 var mirror = debug.MakeMirror(symbol); 11 var serializer = debug.MakeMirrorSerializer(); 12 var json = JSON.stringify(serializer.serializeValue(mirror)); 13 14 // Check the mirror hierachy. 15 assertTrue(mirror instanceof debug.Mirror); 16 assertTrue(mirror instanceof debug.ValueMirror); 17 assertTrue(mirror instanceof debug.SymbolMirror); 18 19 // Check the mirror properties. 20 assertTrue(mirror.isSymbol()); 21 assertEquals(description, mirror.description()); 22 assertEquals('symbol', mirror.type()); 23 assertTrue(mirror.isPrimitive()); 24 var description_text = description === undefined ? "" : description; 25 assertEquals('Symbol(' + description_text + ')', mirror.toText()); 26 assertSame(symbol, mirror.value()); 27 28 // Parse JSON representation and check. 29 var fromJSON = eval('(' + json + ')'); 30 assertEquals('symbol', fromJSON.type); 31 assertEquals(description, fromJSON.description); 32 } 33 34 // Test a number of different symbols. 35 testSymbolMirror(Symbol("a"), "a"); 36 testSymbolMirror(Symbol(12), "12"); 37 testSymbolMirror(Symbol.for("b"), "b"); 38 testSymbolMirror(Symbol(), undefined); 39
