| |
| assertEq("foo".charCodeAt(-123), NaN); |
| assertEq("foo".charCodeAt(-0), 102); |
| assertEq("foo".charCodeAt(0), 102); |
| assertEq("foo".charCodeAt(2), 111); |
| assertEq("foo".charCodeAt(3.4), NaN); |
| assertEq("foo".charCodeAt(), 102); |
| assertEq("".charCodeAt(), NaN); |
| assertEq("".charCodeAt(0), NaN); |
| |
| /* Inferred as string.charCodeAt(int). */ |
| function charCodeAt1(x) { |
| return "abc".charCodeAt(x); |
| } |
| assertEq(charCodeAt1(-1), NaN); |
| assertEq(charCodeAt1(0), 97); |
| assertEq(charCodeAt1(1), 98); |
| assertEq(charCodeAt1(2), 99); |
| assertEq(charCodeAt1(3), NaN); |
| assertEq(charCodeAt1(1234), NaN); |
| |
| /* Inferred as string.charCodeAt(double). */ |
| function charCodeAt2(x) { |
| return "abc".charCodeAt(x); |
| } |
| assertEq(charCodeAt2(-1.3), NaN); |
| assertEq(charCodeAt2(-0), 97); |
| assertEq(charCodeAt2(2), 99); |
| assertEq(charCodeAt2(2.3), 99); |
| assertEq(charCodeAt2(3.14), NaN); |
| assertEq(charCodeAt2(NaN), 97); |
| |
| /* Test ropes. */ |
| function charCodeAt3(s, i) { |
| var s2 = "abcdef" + s + "12345"; |
| return s2.charCodeAt(i); |
| } |
| assertEq(charCodeAt3("abcdef", 14), 51); |
| assertEq(charCodeAt3("a" + "b", 1), 98); |
| assertEq(charCodeAt3("abcdefg" + "hijklmnop", 10), 101); |
| |
| /* Other 'this'. */ |
| var n = new Number(123); |
| n.charCodeAt = String.prototype.charCodeAt; |
| assertEq(n.charCodeAt(1), 50); |
| |
| |