diff -u b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php
--- b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php
+++ b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php
@@ -170,6 +170,31 @@
 
     $this->assertNoFieldByXPath('//notexisting');
     $this->assertNoFieldByXPath("//input[@id = 'edit-name']", 'wrong value');
+
+    // Test that the assertion fails correctly.
+    try {
+      $this->assertFieldByXPath("//input[@id = 'notexisting']");
+      $this->fail('The "notexisting" field was found.');
+    }
+    catch (\PHPUnit_Framework_ExpectationFailedException $e) {
+      $this->pass('assertFieldByXPath correctly failed. The "notexisting" field was not found.');
+    }
+
+    try {
+      $this->assertNoFieldByXPath("//input[@id = 'edit-name']");
+      $this->fail('The "edit-name" field was not found.');
+    }
+    catch (\PHPUnit_Framework_ExpectationFailedException $e) {
+      $this->pass('assertNoFieldByXPath correctly failed. The "edit-name" field was found.');
+    }
+
+    try {
+      $this->assertFieldsByValue($this->xpath("//input[@id = 'edit-name']"), 'not the value');
+      $this->fail('The "edit-name" field is found with the value "not the value".');
+    }
+    catch (\PHPUnit_Framework_ExpectationFailedException $e) {
+      $this->pass('The "edit-name" field is not found with the value "not the value".');
+    }
   }
 
   /**
@@ -327,6 +352,15 @@
       $this->pass($e->getMessage());
     }
 
+    $this->assertNoOption('options', 'non-existing');
+    try {
+      $this->assertNoOption('options', 'one');
+      $this->fail('The select option "one" was not found.');
+    }
+    catch (ExpectationException $e) {
+      $this->pass($e->getMessage());
+    }
+
     // Button field type.
     $this->assertFieldById('edit-save', NULL);
     // Test that the assertion fails correctly if the field value is passed in