michael@0: // Iterating over the argument to Map can throw. The exception is propagated.
michael@0: 
michael@0: load(libdir + "asserts.js");
michael@0: 
michael@0: function data2() {
michael@0:     yield [{}, "XR22/Z"];
michael@0:     yield [{}, "23D-BN"];
michael@0:     throw "oops";
michael@0: }
michael@0: 
michael@0: var it = data2();
michael@0: assertThrowsValue(function () { Map(it); }, "oops");