[#OSSL_SELF_TEST_onbegin]
= OSSL_SELF_TEST_onbegin
:mrdocs:

Signal the start of a self‐test block (callback phase "Start").

== Synopsis

Declared in `<openssl/self_test.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
OSSL_SELF_TEST_onbegin(
    xref:OSSL_SELF_TEST.adoc[OSSL_SELF_TEST]* st,
    char const* type,
    char const* desc);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *st*
| Self‐test object from OSSL_SELF_TEST_new().
| *type*
| Test category string (for example OSSL_SELF_TEST_TYPE_KAT_DIGEST).
| *desc*
| Test subcategory string (for example OSSL_SELF_TEST_DESC_MD_SHA2).
|===


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