Behat#6 Add step definition to access header values

src/Context/WebApiContext.php

@@ -222,6 +222,19 @@ public function theResponseCodeShouldBe($code)
         Assertions::assertSame($expected, $actual);
     }
 
+    /**
+     * Checks that the response has specific header key/value
+     *
+     * @param string $key header key
+     * @param string $value header value
+     *
+     * @Then the response header :key should be :value
+     */
+    public function theResponseHeaderShouldBe($key, $value)
+    {
+        Assertions::assertSame($value, $this->response->getHeader($key)[0]);
+    }
+
     /**
      * Checks that response body contains specific text.
      *