diff --git a/modules/filter/filter.test b/modules/filter/filter.test
index 2bafd47..7592d2e 100644
--- a/modules/filter/filter.test
+++ b/modules/filter/filter.test
@@ -399,6 +399,18 @@ class FilterAdminTestCase extends DrupalWebTestCase {
     $this->assertFieldByName('filters[' . $second_filter . '][weight]', $edit['filters[' . $second_filter . '][weight]'], t('Changes reverted.'));
     $this->assertFieldByName('filters[' . $first_filter . '][weight]', $edit['filters[' . $first_filter . '][weight]'], t('Changes reverted.'));
   }
+
+  /**
+   * Tests the URL filter settings form is properly validated.
+   */
+  function testUrlFilterAdmin() {
+    // The form does not save with an invalid filter URL length.
+    $edit = array(
+      'filters[filter_url][settings][filter_url_length]' => $this->randomName(4),
+    );
+    $this->drupalPost('admin/config/content/formats/filtered_html', $edit, t('Save configuration'));
+    $this->assertNoRaw(t('The text format %format has been updated.', array('%format' => 'Filtered HTML')));
+  }
 }
 
 class FilterFormatAccessTestCase extends DrupalWebTestCase {
diff --git a/modules/search/search.test b/modules/search/search.test
index 26c663e..eeb6bf2 100644
--- a/modules/search/search.test
+++ b/modules/search/search.test
@@ -1461,6 +1461,17 @@ class SearchConfigSettingsForm extends DrupalWebTestCase {
     $this->assertText(t('The index will be rebuilt'));
     $this->drupalGet('admin/config/search/settings');
     $this->assertText(t('There is 1 item left to index.'));
+
+    // Test that the form saves with the default values.
+    $this->drupalPost('admin/config/search/settings', array(), t('Save configuration'));
+    $this->assertText(t('The configuration options have been saved.'), 'Form saves with the default values.');
+
+    // Test that the form does not save with an invalid word length.
+    $edit = array(
+      'minimum_word_size' => $this->randomName(3),
+    );
+    $this->drupalPost('admin/config/search/settings', $edit, t('Save configuration'));
+    $this->assertNoText(t('The configuration options have been saved.'), 'Form does not save with an invalid word length.');
   }
 
   /**
diff --git a/modules/user/user.test b/modules/user/user.test
index b5b64d6..94405f7 100644
--- a/modules/user/user.test
+++ b/modules/user/user.test
@@ -1132,6 +1132,24 @@ class UserPictureTestCase extends DrupalWebTestCase {
     $account = user_load($this->user->uid, TRUE);
     return isset($account->picture) ? $account->picture->uri : NULL;
   }
+
+  /**
+   * Tests the admin form validates user picture settings.
+   */
+  function testUserPictureAdminFormValidation() {
+    $this->drupalLogin($this->drupalCreateUser(array('administer users')));
+
+    // The default values are valid.
+    $this->drupalPost('admin/config/people/accounts', array(), t('Save configuration'));
+    $this->assertText(t('The configuration options have been saved.'), 'The default values are valid.');
+
+    // The form does not save with an invalid file size.
+    $edit = array(
+      'user_picture_file_size' => $this->randomName(),
+    );
+    $this->drupalPost('admin/config/people/accounts', array(), t('Save configuration'));
+    $this->assertNoText(t('The configuration options have been saved.'), 'The form does not save with an invalid file size.');
+  }
 }