diff --git a/tests/testaudience.js b/tests/testaudience.js
index a600ac2..b0f62fc 100644
--- a/tests/testaudience.js
+++ b/tests/testaudience.js
@@ -1,6 +1,10 @@
 /**
- * @fileoverview Defines tests for audience engagement.
- *
+ * @fileoverview Defines test for Audience engagement.
+ * Success criteria:
+ * - Elements with ID prefix 'audience-engagement-‘ should exist;
+ * - Elements with ID prefix 'audience-engagement-‘ should contain content
+ *   equal 'N/A' or '-' or one of following string: '10.1%', '10%',
+ *   '10:1', '10';
  * @see http://google.github.io/styleguide/javascriptguide.xml
  * @see http://developers.google.com/closure/compiler/docs/js-for-compiler
  */
@@ -13,6 +17,7 @@
  * @return {boolean} Returns "true" if test failed.
  */
 function testAudience() {
+  // Elements with ID prefix 'audience-engagement-‘ should exist.
   /** @type {!Array.<string>} */ var nodes = [
     'audience-engagement-visitors-value',
     'audience-engagement-pageviews-value',
@@ -25,6 +30,7 @@ function testAudience() {
     'audience-engagement-bounce-rate-delta'
   ];
   /** @type {number} */ var length = nodes.length;
+  /** @type {boolean} */ var result = false;
   /** @type {Element} */ var element;
   /** @type {string} */ var content;
 
@@ -32,11 +38,16 @@ function testAudience() {
     element = document.getElementById(nodes[--length]);
     content = element && element.textContent.trim();
 
-    if (!content || !(PATTERN.test(content) || 'N/A' == content)) {
-      return true;
+    // Elements with ID prefix 'audience-engagement-‘ should contain
+    // content equal 'N/A' or '-' or one of following string: '10.1%', '10%',
+    // '10:1', '10'.
+    if (!(content && (PATTERN.test(content) || 'N/A' == content ||
+        '-' == content))) {
+      result = true;
+      break;
     }
   }
-  return false;
+  return result;
 }
 
 
diff --git a/tests/testmediaqueries.js b/tests/testmediaqueries.js
index d729d2b..8aad35a 100644
--- a/tests/testmediaqueries.js
+++ b/tests/testmediaqueries.js
@@ -1,11 +1,12 @@
 /**
  * @fileoverview Defines test for Media Queries widget.
- * Success criterias:
+ * Success criteria:
  * - Element with ID 'media-widget' should exist;
  * - Element with ID 'media-widget' should contain element
  *   with ID 'media-data-table';
  * - If element with ID 'media-widget' is not empty it shouldn't contain
- *   element with CSS classes '.rule.media-none' and rows in element with ID
+ *   element with CSS classes '.rule.media-none'
+ * - If element with ID 'media-widget' is not empty rows in element with ID
  *   'media-data-table' should start with text string '@media';
  * - If element with ID 'media-widget' is empty it should contain element with
  *   CSS classes '.rule.media-none'.
@@ -27,8 +28,8 @@ function testMediaQueries() {
   // Element with ID 'media-widget' should exist.
   /** @type {Element} */ var element = document.getElementById(WIDGET_ID);
 
-  // Element with ID 'media-widget' should contain element
-  // with ID 'media-data-table'.
+  // Element with ID 'media-widget' should contain element with
+  // ID 'media-data-table'.
   /** @type {Element} */ var table = document.getElementById(TABLE_ID);
 
   // If element with ID 'media-widget' is not empty it shouldn't contain