Issue #2224917 by m1r1k, drumm, Steven Jones: Fixed Tracker page doesn't order results properly.

core/modules/tracker/src/Tests/TrackerTest.php

@@ -220,6 +220,72 @@ function testTrackerNewComments() {
     $this->assertText('1 new', 'New comments are counted on the tracker listing pages.');
   }
 
+  /**
+   * Tests for ordering on a users tracker listing when comments are posted.
+   */
+  function testTrackerOrderingNewComments() {
+    $this->drupalLogin($this->user);
+
+    $node_one = $this->drupalCreateNode(array(
+      'title' => $this->randomName(8),
+    ));
+
+    $node_two = $this->drupalCreateNode(array(
+      'title' => $this->randomName(8),
+    ));
+
+    // Now get other_user to track these pieces of content.
+    $this->drupalLogin($this->other_user);
+
+    // Add a comment to the first page.
+    $comment = array(
+      'subject' => $this->randomName(),
+      'comment_body[0][value]' => $this->randomName(20),
+    );
+    $this->drupalPostForm('comment/reply/node/' . $node_one->id() . '/comment', $comment, t('Save'));
+
+    // If the comment is posted in the same second as the last one then Drupal
+    // can't tell the difference, so we wait one second here.
+    sleep(1);
+
+    // Add a comment to the second page.
+    $comment = array(
+      'subject' => $this->randomName(),
+      'comment_body[0][value]' => $this->randomName(20),
+    );
+    $this->drupalPostForm('comment/reply/node/' . $node_two->id() . '/comment', $comment, t('Save'));
+
+    // We should at this point have in our tracker for other_user:
+    // 1. node_two
+    // 2. node_one
+    // Because that's the reverse order of the posted comments.
+
+    // Now we're going to post a comment to node_one which should jump it to the
+    // top of the list.
+
+    $this->drupalLogin($this->user);
+    // If the comment is posted in the same second as the last one then Drupal
+    // can't tell the difference, so we wait one second here.
+    sleep(1);
+
+    // Add a comment to the second page.
+    $comment = array(
+      'subject' => $this->randomName(),
+      'comment_body[0][value]' => $this->randomName(20),
+    );
+    $this->drupalPostForm('comment/reply/node/' . $node_one->id() . '/comment', $comment, t('Save'));
+
+    // Switch back to the other_user and assert that the order has swapped.
+    $this->drupalLogin($this->other_user);
+    $this->drupalGet('user/' . $this->other_user->id() . '/track');
+    // This is a cheeky way of asserting that the nodes are in the right order
+    // on the tracker page.
+    // It's almost certainly too brittle.
+    $pattern = '/' . preg_quote($node_one->getTitle()) . '.+' . preg_quote($node_two->getTitle()) . '/s';
+    $this->verbose($pattern);
+    $this->assertPattern($pattern, 'Most recently commented on node appears at the top of tracker');
+  }
+
   /**
    * Tests that existing nodes are indexed by cron.
    */

core/modules/tracker/tracker.module

@@ -256,7 +256,7 @@ function _tracker_add($nid, $uid, $changed) {
     ))
     ->execute();
 
-  // Create or update the user-level data.
+  // Create or update the user-level data, first for the user posting.
   db_merge('tracker_user')
     ->keys(array(
       'nid' => $nid,
@@ -267,6 +267,14 @@ function _tracker_add($nid, $uid, $changed) {
       'published' => $node->status,
     ))
     ->execute();
+  // Update the times for all the other users tracking the post.
+  db_update('tracker_user')
+    ->condition('nid', $nid)
+    ->fields(array(
+      'changed' => $changed,
+      'published' => $node->status,
+    ))
+    ->execute();
 }
 
 /**