michael@0: var o = {
michael@0:   valueOf : function() {
michael@0:     return {
michael@0:       toString : function() { return "fail" }
michael@0:     }
michael@0:   },
michael@0:   toString : function() { return "good" }
michael@0: };
michael@0: 
michael@0: var p = {
michael@0:   valueOf : function() {
michael@0:     return {
michael@0:       toString : function() { return "0" }
michael@0:     }
michael@0:   },
michael@0:   toString : function() { return "7" }
michael@0: };
michael@0: 
michael@0: var q = {
michael@0:   toString : function() {
michael@0:     return {
michael@0:       valueOf : function() { return "0" }
michael@0:     }
michael@0:   },
michael@0:   valueOf : function() { return "7" }
michael@0: };
michael@0: 
michael@0: function assert(b, s) {
michael@0:     if (b)
michael@0:         return;
michael@0:     assertEq("imacro produces incorrect result for " + s, "fail");
michael@0: }
michael@0: 
michael@0: function run() {
michael@0:     for (var i = 0; i < 5; ++i) {
michael@0:         // equality / inequality
michael@0:         assert(!(o == "fail"), "obj == any");
michael@0:         assert(!("fail" == o), "any == obj");
michael@0:         assert(!(o != "good"), "obj != any");
michael@0:         assert(!("good" != o), "any != obj");
michael@0: 
michael@0:         // binary
michael@0:         assert(!((p | 3) != 7), "obj | any");
michael@0:         assert(!((3 | p) != 7), "any | obj");
michael@0:         assert(!((p | p) != 7), "obj | obj");
michael@0:         assert(!((p & 3) != 3), "obj & any");
michael@0:         assert(!((3 & p) != 3), "any & obj");
michael@0:         assert(!((p & p) != 7), "obj & obj");
michael@0:         assert(!((p * 3) != 21), "obj * any");
michael@0:         assert(!((3 * p) != 21), "any * obj");
michael@0:         assert(!((p * p) != 49), "obj * obj");
michael@0: 
michael@0:         // addition
michael@0:         assert(!(o + "" != "good"), "obj + any");
michael@0:         assert(!("" + o != "good"), "any + obj");
michael@0:         assert(!(o + o != "goodgood"), "any + any");
michael@0: 
michael@0:         // sign
michael@0:         assert(!(-p != -7), "-obj");
michael@0:         assert(!(+p != 7), "+obj");
michael@0: 
michael@0:         // String
michael@0:         assert(!(String(q) != "7"), "String(obj)");
michael@0:         assert(!(new String(q) != "7"), "new String(obj)");
michael@0:     }
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: run();