The Tor Browser: js/src/jit-test/tests/basic/withSourceHook.js@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Check that withSourceHook passes URLs, propagates exceptions, and

     2 // properly restores the original source hooks.

     4 load(libdir + 'asserts.js');

     6 // withSourceHook isn't defined if you pass the shell the --fuzzing-safe

     7 // option. Skip this test silently, to avoid spurious failures.

     8 if (typeof withSourceHook != 'function')

     9   quit(0);

    11 var log = '';

    13 // Establish an outermost source hook.

    14 withSourceHook(function (url) {

    15   log += 'o';

    16   assertEq(url, 'outer');

    17   return '(function outer() { 3; })';

    18 }, function () {

    19   log += 'O';

    20   // Verify that withSourceHook propagates exceptions thrown by source hooks.

    21   assertThrowsValue(function () {

    22     // Establish a source hook that throws.

    23     withSourceHook(function (url) {

    24       log += 'm';

    25       assertEq(url, 'middle');

    26       throw 'borborygmus'; // middle

    27     }, function () {

    28       log += 'M';

    29       // Establish an innermost source hook that does not throw,

    30       // and verify that it is in force.

    31       assertEq(withSourceHook(function (url) {

    32                                 log += 'i';

    33                                 assertEq(url, 'inner');

    34                                 return '(function inner() { 1; })';

    35                               }, function () {

    36                                 log += 'I';

    37                                 return evaluate('(function inner() { 2; })',

    38                                                 { fileName: 'inner', sourceIsLazy: true })

    39                                        .toSource();

    40                               }),

    41                '(function inner() { 1; })');

    42       // Verify that the source hook that throws has been reinstated.

    43       evaluate('(function middle() { })',

    44                { fileName: 'middle', sourceIsLazy: true })

    45       .toSource();

    46     });

    47   }, 'borborygmus');

    49   // Verify that the outermost source hook has been restored.

    50   assertEq(evaluate('(function outer() { 4; })',

    51                     { fileName: 'outer', sourceIsLazy: true })

    52            .toSource(),

    53            '(function outer() { 3; })');

    54 });

    56 assertEq(log, 'OMIimo');

The Tor Browser / file revision