tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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iterable-error-messages.js (1240B)

      1 // |jit-test| skip-if: getBuildConfiguration('pbl')
      2 
      3 function assertThrowsMsgEndsWith(f, msg) {
      4    try {
      5        f();
      6        assertEq(0, 1);
      7    } catch(e) {
      8        assertEq(e instanceof TypeError, true);
      9        assertEq(e.message.endsWith(msg), true);
     10    }
     11 }
     12 
     13 // For-of
     14 function testForOf(val) {
     15    for (var x of val) {}
     16 }
     17 for (v of [{}, Math, new Proxy({}, {})]) {
     18    assertThrowsMsgEndsWith(() => testForOf(v), "val is not iterable");
     19 }
     20 assertThrowsMsgEndsWith(() => testForOf(null), "val is null");
     21 assertThrowsMsgEndsWith(() => { for (var x of () => 1) {}}, "() => 1 is not iterable");
     22 
     23 // Destructuring
     24 function testDestr(val) {
     25    var [a, b] = val;
     26 }
     27 for (v of [{}, Math, new Proxy({}, {})]) {
     28    assertThrowsMsgEndsWith(() => testDestr(v), "val is not iterable");
     29 }
     30 assertThrowsMsgEndsWith(() => testDestr(null), "val is null");
     31 assertThrowsMsgEndsWith(() => { [a, b] = () => 1; }, "() => 1 is not iterable");
     32 
     33 // Spread
     34 function testSpread(val) {
     35    [...val];
     36 }
     37 for (v of [{}, Math, new Proxy({}, {})]) {
     38    assertThrowsMsgEndsWith(() => testSpread(v), "val is not iterable");
     39 }
     40 assertThrowsMsgEndsWith(() => testSpread(null), "val is null");
     41 assertThrowsMsgEndsWith(() => { [...() => 1]; }, "() => 1 is not iterable");