michael@0: // This file was written by Andy Wingo <wingo@igalia.com> and originally
michael@0: // contributed to V8 as generators-objects.js, available here:
michael@0: //
michael@0: // http://code.google.com/p/v8/source/browse/branches/bleeding_edge/test/mjsunit/harmony/generators-objects.js
michael@0: 
michael@0: // Test aspects of the generator runtime.
michael@0: 
michael@0: // Test the properties and prototype of a generator object.
michael@0: function TestGeneratorObject() {
michael@0:   function* g() { yield 1; }
michael@0: 
michael@0:   var iter = g();
michael@0:   assertEq(Object.getPrototypeOf(iter), g.prototype);
michael@0:   assertTrue(iter instanceof g);
michael@0:   assertEq(String(iter), "[object Generator]");
michael@0:   assertDeepEq(Object.getOwnPropertyNames(iter), []);
michael@0:   assertNotEq(g(), iter);
michael@0: 
michael@0:   // g() is the same as new g().
michael@0:   iter = new g();
michael@0:   assertEq(Object.getPrototypeOf(iter), g.prototype);
michael@0:   assertTrue(iter instanceof g);
michael@0:   assertEq(String(iter), "[object Generator]");
michael@0:   assertDeepEq(Object.getOwnPropertyNames(iter), []);
michael@0:   assertNotEq(new g(), iter);
michael@0: }
michael@0: TestGeneratorObject();
michael@0: 
michael@0: 
michael@0: // Test the methods of generator objects.
michael@0: function TestGeneratorObjectMethods() {
michael@0:   function* g() { yield 1; }
michael@0:   var iter = g();
michael@0: 
michael@0:   function TestNonGenerator(non_generator) {
michael@0:     assertThrowsInstanceOf(function() { iter.next.call(non_generator); }, TypeError);
michael@0:     assertThrowsInstanceOf(function() { iter.next.call(non_generator, 1); }, TypeError);
michael@0:     assertThrowsInstanceOf(function() { iter.throw.call(non_generator, 1); }, TypeError);
michael@0:     assertThrowsInstanceOf(function() { iter.close.call(non_generator); }, TypeError);
michael@0:   }
michael@0: 
michael@0:   TestNonGenerator(1);
michael@0:   TestNonGenerator({});
michael@0:   TestNonGenerator(function(){});
michael@0:   TestNonGenerator(g);
michael@0:   TestNonGenerator(g.prototype);
michael@0: }
michael@0: TestGeneratorObjectMethods();
michael@0: 
michael@0: 
michael@0: if (typeof reportCompare == "function")
michael@0:     reportCompare(true, true);