[[test-mockmvc-csrf]]
= Testing with CSRF Protection

When testing any non-safe HTTP methods and using Spring Security's CSRF protection, you must include a valid CSRF Token in the request.
To specify a valid CSRF token as a request parameter use the CSRF xref:servlet/test/mockmvc/request-post-processors.adoc[`RequestPostProcessor`] like so:

====
.Java
[source,java,role="primary"]
----
mvc
	.perform(post("/").with(csrf()))
----

.Kotlin
[source,kotlin,role="secondary"]
----
mvc.post("/") {
    with(csrf())
}
----
====

If you like, you can include CSRF token in the header instead:

====
.Java
[source,java,role="primary"]
----
mvc
	.perform(post("/").with(csrf().asHeader()))
----

.Kotlin
[source,kotlin,role="secondary"]
----
mvc.post("/") {
    with(csrf().asHeader())
}
----
====

You can also test providing an invalid CSRF token by using the following:

====
.Java
[source,java,role="primary"]
----
mvc
	.perform(post("/").with(csrf().useInvalidToken()))
----

.Kotlin
[source,kotlin,role="secondary"]
----
mvc.post("/") {
    with(csrf().useInvalidToken())
}
----
====