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.
5 // Flags: --expose-debug-as debug
6 // Test the mirror object for symbols.
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));
14 // Check the mirror hierachy.
15 assertTrue(mirror instanceof debug.Mirror);
16 assertTrue(mirror instanceof debug.ValueMirror);
17 assertTrue(mirror instanceof debug.SymbolMirror);
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());
28 // Parse JSON representation and check.
29 var fromJSON = eval('(' + json + ')');
30 assertEquals('symbol', fromJSON.type);
31 assertEquals(description, fromJSON.description);
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);