Add m-esr52 at 52.6.0

1 files changed, 23 insertions, 0 deletions

diff --git a/js/src/tests/js1_8_5/extensions/is-generator.js b/js/src/tests/js1_8_5/extensions/is-generator.js
new file mode 100644
index 000000000..6c77adda8
--- /dev/null
+++ b/js/src/tests/js1_8_5/extensions/is-generator.js
@@ -0,0 +1,23 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+/*
+ * Bug 648355: Function.prototype.isGenerator
+ */
+
+reportCompare(true, "isGenerator" in Function.prototype, "Function.prototype.isGenerator present");
+
+reportCompare(false, (function(){}).isGenerator(), "lambda is not a generator fn");
+reportCompare(false, Function.prototype.toString.isGenerator(), "native is not a generator fn");
+reportCompare(false, (function(){with(obj){}}).isGenerator(), "heavyweight is not a generator fn");
+reportCompare(false, (function(){obj}).isGenerator(), "upvar function is not a generator fn");
+
+reportCompare(true, (function(){yield}).isGenerator(), "simple generator fn");
+reportCompare(true, (function(){with(obj){yield}}).isGenerator(), "heavyweight generator fn");
+reportCompare(true, (function(){yield; obj}).isGenerator(), "upvar generator fn");
+
+reportCompare(false, Function.prototype.isGenerator.call(42), "number is not a generator fn");
+reportCompare(false, Function.prototype.isGenerator.call({}), "vanilla object is not a generator fn");
+reportCompare(false, Function.prototype.isGenerator.call(new Date()), "date object is not a generator fn");