check if promise object has then property with in operator

zhaobin2016 · Ms2ger · commit 682462ad93b9 · 2017-01-09T16:20:44.000+01:00
diff --git a/idlharness.js b/idlharness.js
@@ -463,7 +463,7 @@ IdlArray.prototype.assert_type_is = function(value, type)
     }
 
     if (type.generic === "Promise") {
-        assert_own_property(value, "then", "Attribute with a Promise type has a then property");
+        assert_true("then" in value, "Attribute with a Promise type has a then property");
         // TODO: Ideally, we would check on project fulfillment
         // that we get the right type
         // but that would require making the type check async

Original file line number	Diff line number	Diff line change
`@@ -463,7 +463,7 @@ IdlArray.prototype.assert_type_is = function(value, type)`
`463`	`463`	`}`
`464`	`464`
`465`	`465`	`if (type.generic === "Promise") {`
`466`		`- assert_own_property(value, "then", "Attribute with a Promise type has a then property");`
	`466`	`+ assert_true("then" in value, "Attribute with a Promise type has a then property");`
`467`	`467`	`// TODO: Ideally, we would check on project fulfillment`
`468`	`468`	`// that we get the right type`
`469`	`469`	`// but that would require making the type check async`