| assertEq("abc".includes("a"), true); |
| assertEq("abc".includes("b"), true); |
| assertEq("abc".includes("abc"), true); |
| assertEq("abc".includes("bc"), true); |
| assertEq("abc".includes("d"), false); |
| assertEq("abc".includes("abcd"), false); |
| assertEq("abc".includes("ac"), false); |
| assertEq("abc".includes("abc", 0), true); |
| assertEq("abc".includes("bc", 0), true); |
| assertEq("abc".includes("de", 0), false); |
| assertEq("abc".includes("bc", 1), true); |
| assertEq("abc".includes("c", 1), true); |
| assertEq("abc".includes("a", 1), false); |
| assertEq("abc".includes("abc", 1), false); |
| assertEq("abc".includes("c", 2), true); |
| assertEq("abc".includes("d", 2), false); |
| assertEq("abc".includes("dcd", 2), false); |
| assertEq("abc".includes("a", 42), false); |
| assertEq("abc".includes("a", Infinity), false); |
| assertEq("abc".includes("ab", -43), true); |
| assertEq("abc".includes("cd", -42), false); |
| assertEq("abc".includes("ab", -Infinity), true); |
| assertEq("abc".includes("cd", -Infinity), false); |
| assertEq("abc".includes("ab", NaN), true); |
| assertEq("abc".includes("cd", NaN), false); |
| var myobj = {toString : () => "abc", includes : String.prototype.includes}; |
| assertEq(myobj.includes("abc"), true); |
| assertEq(myobj.includes("cd"), false); |
| var gotStr = false, gotPos = false; |
| myobj = {toString : (function () { |
| assertEq(gotPos, false); |
| gotStr = true; |
| return "xyz"; |
| }), |
| includes : String.prototype.includes}; |
| var idx = {valueOf : (function () { |
| assertEq(gotStr, true); |
| gotPos = true; |
| return 42; |
| })}; |
| myobj.includes("elephant", idx); |
| assertEq(gotPos, true); |
| assertEq("xyzzy".includes("zy\0", 2), false); |
| var dots = Array(10000).join('.'); |
| assertEq(dots.includes("\x01", 10000), false); |
| assertEq(dots.includes("\0", 10000), false); |