Port passing closure tests for cr.ui framework to browser tests.

chrome/test/data/webui/webui_resource_test.js

 // Copyright 2013 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.
 
 /**
  * Tests that an observation matches the expected value.
  * @param {Object} expected The expected value.
  * @param {Object} observed The actual value.
  * @param {string=} opt_message Optional message to include with a test
  *     failure.
@@ skipping 39 matching lines @@
   if (observed === reference) {
     var message = 'Assertion Failed\n  Observed: ' + observed +
         '\n  Reference: ' + reference;
     if (opt_message)
       message = message + '\n  ' + opt_message;
     throw new Error(message);
   }
 }
 
 /**
- * Verifies that a test evaluation results in an assertion failure.
+ * Verifies that a test evaluation results in an exception.
  * @param {!Function} f The test function.
  */
 function assertThrows(f) {
   var triggeredError = false;
   try {
     f();
   } catch(err) {
     triggeredError = true;
   }
   if (!triggeredError)
     throw new Error('Assertion Failed: throw expected.');
 }
 
 /**
+ * Verifies that a function evaluation does not throw an exception.
+ * @param {!Function} The test function.
+ */

[arv (Not doing code reviews), 2013/06/20 14:26:24]

This is generally not a useful assertion function since exceptions already fail
the test.

assertNotThrows(f)

can be replaced by

f()

[kevers, 2013/06/20 14:59:28]

Removed.

+function assertNotThrows(f) {
+  var triggeredError = false;
+  try {
+    f();
+  } catch(err) {
+    triggeredError = true;
+    console.log(err.stack);
+  }
+  if (triggeredError)
+    throw new Error('Assertion Failed: exception thrown.');
+}
+
+/**
+ * Verifies that the contents of the expected and observed arrays match.
+ * @param {Array.<Object>} expected The expected result.

[arv (Not doing code reviews), 2013/06/20 14:26:24]

{Array} since the array can contain any value

[kevers, 2013/06/20 14:59:28]

Done.

+ * @param {Array.<Object>} observed The actual result.
+ */
+function assertArrayEquals(expected, observed) {
+  var v1 = Array.prototype.concat.call(expected);
+  var v2 = Array.prototype.concat.call(observed);

[arv (Not doing code reviews), 2013/06/20 14:26:24]

not concat... use slice. slice is generic, concat is not

[kevers, 2013/06/20 14:59:28]

Done.

+  var equal = v1.length == v2.length;
+  if (equal) {
+    for (var i = 0; i < v1.length; i++) {
+      if (v1[i] !== v2[i]) {
+        equal = false;
+        break;
+      }
+    }
+  }
+  if (!equal) {
+    var message = 'Assertion Failed\n  Observed: ' + v2 +
+        '\n  Expected: ' + v1;
+    throw new Error(message);
+  }
+}
+
+/**
  * Runs all functions starting with test and reports success or
  * failure of the test suite.
  */
 function runTests() {
   var tests = [];
-
-  if (window.setUp)
-    window.setUp();
-
   var success = true;
   for (var name in window) {
     if (typeof window[name] == 'function' && /^test/.test(name))
       tests.push(name);
   }
   if (!tests.length) {
     console.error('\nFailed to find test cases.');
     success = false;
   }
   for (var i = 0; i < tests.length; i++) {
     try {
+      if (window.setUp)
+        window.setUp();
       window[tests[i]]();
     } catch (err) {
       console.error('Failure in test ' + tests[i] + '\n' + err);
       console.log(err.stack);
       success = false;
     }
+    if (window.tearDown)
+      window.tearDown();
   }
-
-  if (window.tearDown)
-    window.tearDown();
-
   endTests(success);
 }
 
 /**
  * Signals completion of a test.
  * @param {boolean} success Indicates if the test completed successfully.
  */
 function endTests(success) {
   domAutomationController.setAutomationId(1);
   domAutomationController.send(success ? 'SUCCESS' : 'FAILURE');
 }
 
 window.onerror = function() {
   endTests(false);
 };