string-compare-char-in-bounds.js

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// |str.char(idx) == "b"| is compiled as |str.charCodeAt(idx) == 0x62|.

const strings = [

  "a", "b", "c",

  "a-", "b-", "c-",

];

for (let i = 0; i < 1000; ++i) {

  let str = strings[i % strings.length];

  for (let j = 0; j < str.length; ++j) {

    let ch = str.charAt(j);

    let code = str.charCodeAt(j);

    assertEq(ch == "b", code == 0x62);

    assertEq(ch != "b", code != 0x62);

    assertEq(ch < "b", code < 0x62);

    assertEq(ch <= "b", code <= 0x62);

    assertEq(ch > "b", code > 0x62);

    assertEq(ch >= "b", code >= 0x62);