michael@0: function Person(){}
michael@0: function Ninja(){}
michael@0: Ninja.prototype = new Person();
michael@0: function House(){}
michael@0: 
michael@0: var empty = {};
michael@0: var person = new Person();
michael@0: var ninja = new Ninja();
michael@0: var house = new House();
michael@0: var string = new String();
michael@0: var bindNinja = Ninja.bind({});
michael@0: 
michael@0: var array = {};
michael@0: array.__proto__ = Array.prototype;
michael@0: var array2 = {};
michael@0: array2.__proto__ = array.prototype;
michael@0: 
michael@0: function test(v, v2) {
michael@0:   return v instanceof v2;
michael@0: }
michael@0: function test2(v, v2) {
michael@0:   return v instanceof v2;
michael@0: }
michael@0: function test3(v, v2) {
michael@0:   return v instanceof v2;
michael@0: }
michael@0: function test4(v, v2) {
michael@0:   return v instanceof v2;
michael@0: }
michael@0: 
michael@0: // Test if specialized for object works
michael@0: for (var i=0; i!=41; i++) {
michael@0:   assertEq(test(person, Person), true);
michael@0:   assertEq(test(empty, Person), false);
michael@0:   assertEq(test(ninja, Person), true);
michael@0:   assertEq(test(house, Person), false);
michael@0:   assertEq(test(string, Person), false);
michael@0:   assertEq(test(new bindNinja(), Person), true);
michael@0:   assertEq(test(new Ninja(), bindNinja), true);
michael@0:   assertEq(test(string, String), true);
michael@0:   assertEq(test(array, Array), true);
michael@0:   assertEq(test(empty, Object), true);
michael@0:   
michael@0:   // Test if bailout works
michael@0:   assertEq(test(0.1, Object), false);
michael@0:   
michael@0:   // Should generate TypeError
michael@0:   var err = false;
michael@0:   try {
michael@0:     test(0.1, 5);
michael@0:   } catch (e) { err = true; }
michael@0:   assertEq(err, true);
michael@0:   
michael@0:   // Should generate TypeError
michael@0:   var err = false;
michael@0:   try {
michael@0:     test(empty, empty);
michael@0:   } catch (e) { err = true; }
michael@0:   assertEq(err, true);
michael@0:   
michael@0:   // Should generate TypeError
michael@0:   var err = false;
michael@0:   try {
michael@0:     test(5.0, empty);
michael@0:   } catch (e) { err = true; }
michael@0:   assertEq(err, true);
michael@0: }
michael@0: 
michael@0: // Test if specialized for non-object lhs
michael@0: for (var i=0; i!=41; i++) {
michael@0:   assertEq(test2(0.1, Object), false);
michael@0: }
michael@0: 
michael@0: // Check if we don't regress on https://bugzilla.mozilla.org/show_bug.cgi?id=7635
michael@0: function Foo() {};
michael@0: theproto = {};
michael@0: Foo.prototype = theproto;
michael@0: 
michael@0: for (var i=0; i!=41; i++) {
michael@0:   assertEq(test3(theproto, Foo), false);
michael@0: }
michael@0: