diff --git a/test/styles.less b/test/styles.less
index 51759f83..39c00d26 100644
--- a/test/styles.less
+++ b/test/styles.less
@@ -81,6 +81,10 @@
             margin: 0 auto;
             padding: 32px;
             max-width: 900px;
+
+            > .toggle {
+                display: none;
+            }
         }
     }
 
@@ -146,7 +150,26 @@
     }
 
     .suite {
+        position: relative;
         margin: 16px 0 8px 24px;
+
+        .toggle {
+            position: absolute;
+            left: -24px;
+            top: 0;
+            width: 24px;
+            height: 24px;
+            line-height: 24px;
+            color: @col-text;
+            font-size: 16px;
+            font-weight: bold;
+            text-align: center;
+            cursor: pointer;
+
+            &:hover {
+                background: @col-back-hover;
+            }
+        }
     }
 
     .test {
diff --git a/test/util/mocha.js b/test/util/mocha.js
index f0a59a73..64d2816d 100644
--- a/test/util/mocha.js
+++ b/test/util/mocha.js
@@ -36,13 +36,31 @@ function addSuiteStats() {
     var failed = tests - passed;
 
     var $header = $suite.find('> h1 a');
+    var $list = $suite.find('> ul');
     var $count = $('<span class="count"><span class="passed">' + passed + '</span><span class="failed">' + failed + '</span></span>');
+    var $toggle = $('<span class="toggle">-</span>');
+    var visible = true;
+
+    $toggle.on('click', function (ev) {
+
+        ev.stopImmediatePropagation();
+
+        visible = !visible;
+        if (visible) {
+            $toggle.text('-');
+            $list.show();
+        } else {
+            $toggle.text('+');
+            $list.hide();
+        }
+    });
 
     if (!failed) {
         $count.find('.failed').remove();
     }
 
     $suite.addClass(tests === passed ? 'pass' : 'fail');
+    // $suite.append($toggle);
     $header.append($count);
 }