Add webgl conformance tests r15841.

resources/webgl-test-harness.js

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This is a test harness for running javascript tests in the browser.
+// The only identifier exposed by this harness is WebGLTestHarnessModule.
+//
+// To use it make an HTML page with an iframe. Then call the harness like this
+//
+//    function reportResults(type, msg, success) {
+//      ...
+//      return true;
+//    }
+//
+//    var fileListURL = '00_test_list.txt';
+//    var testHarness = new WebGLTestHarnessModule.TestHarness(
+//        iframe,
+//        fileListURL,
+//        reportResults);
+//
+// The harness will load the fileListURL and parse it for the URLs, one URL
+// per line. URLs should be on the same domain and at the same folder level
+// or below the main html file.  If any URL ends in .txt it will be parsed
+// as well so you can nest .txt files. URLs inside a .txt file should be
+// relative to that text file.
+//
+// During startup, for each page found the reportFunction will be called with
+// WebGLTestHarnessModule.TestHarness.reportType.ADD_PAGE and msg will be
+// the URL of the test.
+//
+// Each test is required to call testHarness.reportResults. This is most easily
+// accomplished by storing that value on the main window with
+//
+//     window.webglTestHarness = testHarness
+//
+// and then adding these to functions to your tests.
+//
+//     function reportTestResultsToHarness(success, msg) {
+//       if (window.parent.webglTestHarness) {
+//         window.parent.webglTestHarness.reportResults(success, msg);
+//       }
+//     }
+//
+//     function notifyFinishedToHarness() {
+//       if (window.parent.webglTestHarness) {
+//         window.parent.webglTestHarness.notifyFinished();
+//       }
+//     }
+//
+// This way your tests will still run without the harness and you can use
+// any testing framework you want.
+//
+// Each test should call reportTestResultsToHarness with true for success if it
+// succeeded and false if it fail followed and any message it wants to
+// associate with the test. If your testing framework supports checking for
+// timeout you can call it with success equal to undefined in that case.
+//
+// To run the tests, call testHarness.runTests();
+//
+// For each test run, before the page is loaded the reportFunction will be
+// called with WebGLTestHarnessModule.TestHarness.reportType.START_PAGE and msg
+// will be the URL of the test. You may return false if you want the test to be
+// skipped.
+//
+// For each test completed the reportFunction will be called with
+// with WebGLTestHarnessModule.TestHarness.reportType.TEST_RESULT,
+// success = true on success, false on failure, undefined on timeout
+// and msg is any message the test choose to pass on.
+//
+// When all the tests on the page have finished your page must call
+// notifyFinishedToHarness.  If notifyFinishedToHarness is not called
+// the harness will assume the test timed out.
+//
+// When all the tests on a page have finished OR the page as timed out the
+// reportFunction will be called with
+// WebGLTestHarnessModule.TestHarness.reportType.FINISH_PAGE
+// where success = true if the page has completed or undefined if the page timed
+// out.
+//
+// Finally, when all the tests have completed the reportFunction will be called
+// with WebGLTestHarnessModule.TestHarness.reportType.FINISHED_ALL_TESTS.
+//
+
+WebGLTestHarnessModule = function() {
+
+/**
+ * Wrapped logging function.
+ */
+var log = function(msg) {
+  if (window.console && window.console.log) {
+    window.console.log(msg);
+  }
+};
+
+/**
+ * Loads text from an external file. This function is synchronous.
+ * @param {string} url The url of the external file.
+ * @param {!function(bool, string): void} callback that is sent a bool for
+ *     success and the string.
+ */
+var loadTextFileAsynchronous = function(url, callback) {
+  log ("loading: " + url);
+  var error = 'loadTextFileSynchronous failed to load url "' + url + '"';
+  var request;
+  if (window.XMLHttpRequest) {
+    request = new XMLHttpRequest();
+    if (request.overrideMimeType) {
+      request.overrideMimeType('text/plain');
+    }
+  } else {
+    throw 'XMLHttpRequest is disabled';
+  }
+  try {
+    request.open('GET', url, true);
+    request.onreadystatechange = function() {
+      if (request.readyState == 4) {
+        var text = '';
+        // HTTP reports success with a 200 status. The file protocol reports
+        // success with zero. HTTP does not use zero as a status code (they
+        // start at 100).
+        // https://developer.mozilla.org/En/Using_XMLHttpRequest
+        var success = request.status == 200 || request.status == 0;
+        if (success) {
+          text = request.responseText;
+        }
+        log("loaded: " + url);
+        callback(success, text);
+      }
+    };
+    request.send(null);
+  } catch (e) {
+    log("failed to load: " + url);
+    callback(false, '');
+  }
+};
+
+var getFileList = function(url, callback) {
+  var files = [];
+
+  var getFileListImpl = function(url, callback) {
+    var files = [];
+    if (url.substr(url.length - 4) == '.txt') {
+      loadTextFileAsynchronous(url, function() {
+        return function(success, text) {
+          if (!success) {
+            callback(false, '');
+            return;
+          }
+          var lines = text.split('\n');
+          var prefix = '';
+          var lastSlash = url.lastIndexOf('/');
+          if (lastSlash >= 0) {
+            prefix = url.substr(0, lastSlash + 1);
+          }
+          var fail = false;
+          var count = 1;
+          var index = 0;
+          for (var ii = 0; ii < lines.length; ++ii) {
+            var str = lines[ii].replace(/^\s\s*/, '').replace(/\s\s*$/, '');
+            if (str.length > 4 &&
+                str[0] != '#' &&
+                str[0] != ";" &&
+                str.substr(0, 2) != "//") {
+              new_url = prefix + str;
+              ++count;
+              getFileListImpl(new_url, function(index) {
+                return function(success, new_files) {
+                  log("got files: " + new_files.length);
+                  if (success) {
+                    files[index] = new_files;
+                  }
+                  finish(success);
+                };
+              }(index++));
+            }
+          }
+          finish(true);
+
+          function finish(success) {
+            if (!success) {
+              fail = true;
+            }
+            --count;
+            log("count: " + count);
+            if (!count) {
+              callback(!fail, files);
+            }
+          }
+        }
+      }());
+
+    } else {
+      files.push(url);
+      callback(true, files);
+    }
+  };
+
+  getFileListImpl(url, function(success, files) {
+    // flatten
+    var flat = [];
+    flatten(files);
+    function flatten(files) {
+      for (var ii = 0; ii < files.length; ++ii) {
+        var value = files[ii];
+        if (typeof(value) == "string") {
+          flat.push(value);
+        } else {
+          flatten(value);
+        }
+      }
+    }
+    callback(success, flat);
+  });
+};
+
+var TestFile = function(url) {
+  this.url = url;
+};
+
+var TestHarness = function(iframe, filelistUrl, reportFunc) {
+  this.window = window;
+  this.iframe = iframe;
+  this.reportFunc = reportFunc;
+  this.timeoutDelay = 20000;
+  this.files = [];
+
+  var that = this;
+  getFileList(filelistUrl, function() {
+    return function(success, files) {
+      that.addFiles_(success, files);
+    };
+  }());
+
+};
+
+TestHarness.reportType = {
+  ADD_PAGE: 1,
+  READY: 2,
+  START_PAGE: 3,
+  TEST_RESULT: 4,
+  FINISH_PAGE: 5,
+  FINISHED_ALL_TESTS: 6
+};
+
+TestHarness.prototype.addFiles_ = function(success, files) {
+  if (!success) {
+    this.reportFunc(
+        TestHarness.reportType.FINISHED_ALL_TESTS,
+        'Unable to load tests. Are you running locally?\n' +
+        'You need to run from a server or configure your\n' +
+        'browser to allow access to local files (not recommended).\n\n' +
+        'Note: An easy way to run from a server:\n\n' +
+        '\tcd path_to_tests\n' +
+        '\tpython -m SimpleHTTPServer\n\n' +
+        'then point your browser to ' +
+          '<a href="http://localhost:8000/webgl-conformance-tests.html">' +
+          'http://localhost:8000/webgl-conformance-tests.html</a>',
+        false)
+    return;
+  }
+  log("total files: " + files.length);
+  for (var ii = 0; ii < files.length; ++ii) {
+    log("" + ii + ": " + files[ii]);
+    this.files.push(new TestFile(files[ii]));
+    this.reportFunc(TestHarness.reportType.ADD_PAGE, files[ii], undefined);
+  }
+  this.reportFunc(TestHarness.reportType.READY, undefined, undefined);
+  this.nextFileIndex = files.length;
+  this.lastFileIndex = files.length;
+}
+
+TestHarness.prototype.runTests = function(opt_start, opt_count) {
+  var count = opt_count || this.files.length;
+  this.nextFileIndex = opt_start || 0;
+  this.lastFileIndex = this.nextFileIndex + count;
+  this.startNextFile();
+};
+
+TestHarness.prototype.setTimeout = function() {
+  var that = this;
+  this.timeoutId = this.window.setTimeout(function() {
+      that.timeout();
+    }, this.timeoutDelay);
+};
+
+TestHarness.prototype.clearTimeout = function() {
+  this.window.clearTimeout(this.timeoutId);
+};
+
+TestHarness.prototype.startNextFile = function() {
+  if (this.nextFileIndex >= this.lastFileIndex) {
+    log("done");
+    this.reportFunc(TestHarness.reportType.FINISHED_ALL_TESTS,
+                    '', true);
+  } else {
+    this.currentFile = this.files[this.nextFileIndex++];
+    log("loading: " + this.currentFile.url);
+    if (this.reportFunc(TestHarness.reportType.START_PAGE,
+                        this.currentFile.url, undefined)) {
+      this.iframe.src = this.currentFile.url;
+      this.setTimeout();
+    } else {
+      this.reportResults(false, "skipped");
+      this.notifyFinished();
+    }
+  }
+};
+
+TestHarness.prototype.reportResults = function (success, msg) {
+  this.clearTimeout();
+  log(success ? "PASS" : "FAIL", msg);
+  this.reportFunc(TestHarness.reportType.TEST_RESULT, msg, success);
+  // For each result we get, reset the timeout
+  this.setTimeout();
+};
+
+TestHarness.prototype.notifyFinished = function () {
+  this.clearTimeout();
+  var url = this.currentFile ? this.currentFile.url : 'unknown';
+  log(url + ": finished");
+  this.reportFunc(TestHarness.reportType.FINISH_PAGE, url, true);
+  this.startNextFile();
+};
+
+TestHarness.prototype.timeout = function() {
+  this.clearTimeout();
+  var url = this.currentFile ? this.currentFile.url : 'unknown';
+  log(url + ": timeout");
+  this.reportFunc(TestHarness.reportType.FINISH_PAGE, url, undefined);
+  this.startNextFile();
+};
+
+TestHarness.prototype.setTimeoutDelay = function(x) {
+  this.timeoutDelay = x;
+};
+
+return {
+    'TestHarness': TestHarness
+  };
+
+}();
+
+
+