tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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disposal-handling-undefined-null-as-errors.js (1480B)

      1 // |jit-test| skip-if: !getBuildConfiguration("explicit-resource-management"); --enable-explicit-resource-management
      2 
      3 load(libdir + "asserts.js");
      4 
      5 {
      6  const disposed = [];
      7  const errorsToThrow = [undefined, null, 2];
      8  function testThrowsWithUndefinedAndNullValues() {
      9    using a = {
     10      [Symbol.dispose]() {
     11        disposed.push(1);
     12        throw errorsToThrow[0];
     13      }
     14    }
     15 
     16    using b = {
     17      [Symbol.dispose]() {
     18        disposed.push(2);
     19        throw errorsToThrow[1];
     20      }
     21    }
     22 
     23    using c = {
     24      [Symbol.dispose]() {
     25        disposed.push(3);
     26        throw errorsToThrow[2];
     27      }
     28    }
     29  }
     30  assertSuppressionChain(testThrowsWithUndefinedAndNullValues, errorsToThrow);
     31  assertArrayEq(disposed, [3, 2, 1]);
     32 }
     33 
     34 {
     35  const disposed = [];
     36  const errorsToThrow = [2, undefined];
     37  function testThrowsWithUndefinedAndRealValue() {
     38    using a = {
     39      [Symbol.dispose]() {
     40        disposed.push(1);
     41        throw errorsToThrow[0];
     42      }
     43    }
     44 
     45    throw errorsToThrow[1];
     46  }
     47  assertSuppressionChain(testThrowsWithUndefinedAndRealValue, errorsToThrow);
     48  assertArrayEq(disposed, [1]);
     49 }
     50 
     51 {
     52  const disposed = [];
     53  const errorsToThrow = [2, null];
     54  function testThrowsWithNullAndRealValue() {
     55    using a = {
     56      [Symbol.dispose]() {
     57        disposed.push(1);
     58        throw errorsToThrow[0];
     59      }
     60    }
     61 
     62    throw errorsToThrow[1];
     63  }
     64  assertSuppressionChain(testThrowsWithNullAndRealValue, errorsToThrow);
     65  assertArrayEq(disposed, [1]);
     66 }