Make Bool PYSON evaluate to false empty Time and TimeDelta

As Time and TimeDelta are moment Object, Bool should specially evaluate those
instances.

issue5993
review25781002

src/pyson.js

@@ -197,7 +197,12 @@
     });
 
     Sao.PYSON.Bool.eval_ = function(value, context) {
-        if (value.v instanceof Object) {
+        if (moment.isMoment(value.v) && value.v.isTime) {
+            return Boolean(value.v.hour() || value.v.minute() ||
+                    value.v.second() || value.v.millisecond());
+        } else if (moment.isDuration(value.v)) {
+            return Boolean(value.v.valueOf());
+        } else if (value.v instanceof Object) {
             return !jQuery.isEmptyObject(value.v);
         } else {
             return Boolean(value.v);

tests/sao.js

@@ -149,6 +149,18 @@
         eval_ = new Sao.PYSON.Encoder().encode(new Sao.PYSON.Bool({}));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_), false,
             'decode(Bool({}))');
+
+        eval_ = new Sao.PYSON.Encoder().encode(
+                new Sao.PYSON.Bool(new Sao.PYSON.Eval('value')));
+        QUnit.strictEqual(new Sao.PYSON.Decoder({value: Sao.Time(0)})
+                .decode(eval_), false, "decode(Bool(Sao.Time(0)))");
+        QUnit.strictEqual(new Sao.PYSON.Decoder({value: Sao.Time(1)})
+                .decode(eval_), true, "decode(Bool(Sao.Time(1)))");
+        QUnit.strictEqual(new Sao.PYSON.Decoder({value: Sao.TimeDelta()})
+                .decode(eval_), false, "decode(Bool(Sao.TimeDelta()))");
+        QUnit.strictEqual(new Sao.PYSON.Decoder({value: Sao.TimeDelta(1)})
+                .decode(eval_), true, "decode(Bool(Sao.TimeDelta(1)))");
+
         QUnit.strictEqual(new Sao.PYSON.Bool('test').toString(),
                 "Bool(\"test\")");
     });