Reland r159735 - support for test harness (text-only) tests w/o expected results.

LayoutTests/resources/testharnessreport.js

 /*
  * THIS FILE INTENTIONALLY LEFT BLANK
  *
  * More specifically, this file is intended for vendors to implement
  * code needed to integrate testharness.js tests with their own test systems.
  *
  * Typically such integration will attach callbacks when each test is
  * has run, using add_result_callback(callback(test)), or when the whole test file has
  * completed, using add_completion_callback(callback(tests, harness_status)).
  *
@@ skipping 25 matching lines @@
 // test results into an HTML table.  When that table is dumped as text, no
 // spacing between cells is preserved, and it is therefore not readable. By
 // setting output to false, the HTML table will not be created.
 setup({output: false});
 
 // Using a callback function, test results will be added to the page in a
 // manner that allows dumpAsText to produce readable test results.
 add_completion_callback(function (tests, harnessStatus)
 {
     // An array to hold string pieces, which will be joined later to produce the final result.
-    var resultsArray = ["\n"];
+    var resultsArray = ["This is a testharness.js-based test.\n"];
 
     if (harnessStatus.status !== 0) {
         resultsArray.push("Harness Error. harnessStatus.status = ",
                           harnessStatus.status,
                           " , harnessStatus.message = ",
                           harnessStatus.message);
+    } else if (tests.length == 0) {
+        results.Array.push("FAIL: No tests actually ran.\n");
     } else {
         for (var i = 0; i < tests.length; i++) {
             resultsArray.push(convertResultStatusToString(tests[i].status),
                               " ",
                               tests[i].name !== null ? tests[i].name : "",
                               " ",
                               tests[i].message !== null ? tests[i].message : "",
                               "\n");
         }
     }
+    resultsArray.push("Harness: the test ran to completion.\n")
 
     var resultElement = document.createElement("pre");
     resultElement.textContent = resultsArray.join("");
     document.body.appendChild(resultElement);
 
     if (window.testRunner)
         testRunner.notifyDone();
 });