third_party/WebKit/LayoutTests/fast/js/script-tests/exception-line-number.js

   1 description('This test makes sure the exception stack has line number information.');
   2
   3 // Test error.stack:
   4 function foo() {    // line 4
   5     try {
   6         doError();  // line 6
   7     } catch(err) {
   8         temp = err.stack;
   9     }
  10 }
  11 foo();              // line 11
  12
  13 // The stack trace contains the full path to the file.  We need to trim it to
  14 // only the part below LayoutTest so that the test results are consistent
  15 // regardless of which server it is served from.
  16 //
  17 // String.match() generates an array of matches.  We'll just convert all the
  18 // elements back into a comma separated string by simply stringifying the
  19 // array.  This makes it easier to compare the resultant stack trace info.
  20
  21 result = String(temp.match(/LayoutTests\/[^:]+\:[0-9]+/g));
  22
  23 shouldBe("result", '"LayoutTests/fast/js/script-tests/exception-line-number.js:6,LayoutTests/fast/js/script-tests/exception-line-number.js:11"');
  24
  25
  26 // Test window.onerror:
  27
  28 window.onerror = function(msg, url, line) {
  29     url = String(url.match(/LayoutTests\/[^:]+/g));
  30     result = url + ':' + line;
  31     shouldBe("result", '"LayoutTests/fast/js/script-tests/exception-line-number.js:36"');
  32     return true;  // We handled it.
  33 }
  34
  35 this.err = Error(12, "line number test");
  36 throw this.err;   // Line 36.