string-spread.js 582 B

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  1. load("test-common.js");
  2. function testArray(arr) {
  3. return arr.length === 4 &&
  4. arr[0] === "a" &&
  5. arr[1] === "b" &&
  6. arr[2] === "c" &&
  7. arr[3] === "d";
  8. }
  9. try {
  10. var arr;
  11. arr = ["a", ..."bc", "d"];
  12. assert(testArray(arr));
  13. let s = "bc";
  14. arr = ["a", ...s, "d"];
  15. assert(testArray(arr));
  16. let obj = { a: "bc" };
  17. arr = ["a", ...obj.a, "d"];
  18. assert(testArray(arr));
  19. arr = [..."", ...[...new String("abc")], "d"];
  20. assert(testArray(arr));
  21. console.log("PASS");
  22. } catch (e) {
  23. console.log("FAIL: " + e);
  24. }