diff --git a/core/tests/Drupal/Tests/Component/Utility/CryptTest.php b/core/tests/Drupal/Tests/Component/Utility/CryptTest.php
index 7eb10ce..fca79ac 100644
--- a/core/tests/Drupal/Tests/Component/Utility/CryptTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/CryptTest.php
@@ -37,4 +37,53 @@ public function testRandomBytes() {
     }
   }
 
+  /**
+   * Tests \Drupal\Component\Utility\Crypt::hashBase64().
+   *
+   * @dataProvider providerTestHashBase64
+   */
+  public function testHashBase64($data, $expectedHash) {
+    $hash = Crypt::hashBase64($data);
+    $this->assertEquals($expectedHash, $hash, 'The correct hash was not calculated.');
+  }
+
+  /**
+   * Tests \Drupal\Component\Utility\Crypt::hmacBase64().
+   *
+   * @dataProvider providerTestHmacBase64
+   */
+  public function testHmacBase64($data, $key, $expectedHmac) {
+    $hmac = Crypt::hmacBase64($data, $key);
+    $this->assertEquals($expectedHmac, $hmac, 'The correct hmac was not calculated.');
+  }
+
+  /**
+   * Provides data for self::testHashBase64().
+   */
+  public static function providerTestHashBase64() {
+    return array(
+      array(
+        'data' => 'The SHA (Secure Hash Algorithm) is one of a number of cryptographic hash functions. A cryptographic hash is like a signature for a text or a data file. SHA-256 algorithm generates an almost-unique, fixed size 256-bit (32-byte) hash. Hash is a one way function – it cannot be decrypted back. This makes it suitable for password validation, challenge hash authentication, anti-tamper, digital signatures.',
+        'expectedHash' => '034rT6smZAVRxpq8O98cFFNLIVx_Ph1EwLZQKcmRR_s',
+      ),
+      array(
+        'data' => 'SHA-256 is one of the successor hash functions to SHA-1, and is one of the strongest hash functions available.',
+        'expectedHash' => 'yuqkDDYqprL71k4xIb6K6D7n76xldO4jseRhEkEE6SI',
+      ),
+    );
+  }
+
+  /**
+   * Provides data for self::testHmacBase64().
+   */
+  public static function providerTestHmacBase64() {
+    return array(
+      array(
+        'data' => 'Calculates a base-64 encoded, URL-safe sha-256 hmac.',
+        'key' => 'secret-key',
+        'expectedHmac' => '2AaH63zwjhekWZlEpAiufyfhAHIzbQhl9Hd9oCi3_c8',
+      ),
+    );
+  }
+
 }