tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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stringifiers.js (1626B)

      1 /**
      2 * Runs tests for <https://webidl.spec.whatwg.org/#es-stringifier>.
      3 * @param {Object} aObject - object to test
      4 * @param {string} aAttribute - IDL attribute name that is annotated with `stringifier`
      5 * @param {boolean} aIsUnforgeable - whether the IDL attribute is `[LegacyUnforgeable]`
      6 */
      7 function test_stringifier_attribute(aObject, aAttribute, aIsUnforgeable) {
      8  // Step 1.
      9  test(function() {
     10    [null, undefined].forEach(function(v) {
     11      assert_throws_js(TypeError, function() {
     12        aObject.toString.call(v);
     13      });
     14    });
     15  });
     16 
     17  // TODO Step 2: security check.
     18 
     19  // Step 3.
     20  test(function() {
     21    assert_false("Window" in window && aObject instanceof window.Window);
     22    [{}, window].forEach(function(v) {
     23      assert_throws_js(TypeError, function() {
     24        aObject.toString.call(v)
     25      });
     26    });
     27  });
     28 
     29  // Step 4-6.
     30  var expected_value;
     31  test(function() {
     32    expected_value = aObject[aAttribute];
     33    assert_equals(aObject[aAttribute], expected_value,
     34                  "The attribute " + aAttribute + " should be pure.");
     35  });
     36 
     37  var test_error = { name: "test" };
     38  test(function() {
     39    if (!aIsUnforgeable) {
     40      Object.defineProperty(aObject, aAttribute, {
     41        configurable: true,
     42        get: function() { throw test_error; }
     43      });
     44    }
     45    assert_equals(aObject.toString(), expected_value);
     46  });
     47 
     48  test(function() {
     49    if (!aIsUnforgeable) {
     50      Object.defineProperty(aObject, aAttribute, {
     51        configurable: true,
     52        value: { toString: function() { throw test_error; } }
     53      });
     54    }
     55    assert_equals(aObject.toString(), expected_value);
     56  });
     57 }