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Add a testcase for OSSL_PROVIDER_unload() being fully effective #18254

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Add a testcase for OSSL_PROVIDER_unload() being fully effective #18254

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37 changes: 37 additions & 0 deletions test/evp_extra_test2.c
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Expand Up @@ -512,6 +512,42 @@ static int test_alternative_default(void)
return ok;
}

static int test_provider_unload_effective(int testid)
{
EVP_MD *sha256 = NULL;
OSSL_PROVIDER *provider = NULL;
int ok = 0;

if (!TEST_ptr(provider = OSSL_PROVIDER_load(NULL, "default"))
|| !TEST_ptr(sha256 = EVP_MD_fetch(NULL, "SHA2-256", NULL)))
goto err;

if (testid > 0) {
OSSL_PROVIDER_unload(provider);
provider = NULL;
EVP_MD_free(sha256);
sha256 = NULL;
} else {
EVP_MD_free(sha256);
sha256 = NULL;
OSSL_PROVIDER_unload(provider);
provider = NULL;
}

/*
* setup_tests() loaded the "null" provider in the current default, and
* we unloaded it above after the load so we know this fetch should fail.
*/
if (!TEST_ptr_null(sha256 = EVP_MD_fetch(NULL, "SHA2-256", NULL)))
goto err;

ok = 1;
err:
EVP_MD_free(sha256);
OSSL_PROVIDER_unload(provider);
return ok;
}

static int test_d2i_PrivateKey_ex(int testid)
{
int ok = 0;
Expand Down Expand Up @@ -1064,6 +1100,7 @@ int setup_tests(void)
ADD_TEST(test_rsa_pss_sign);
ADD_TEST(test_evp_md_ctx_dup);
ADD_TEST(test_evp_md_ctx_copy);
ADD_ALL_TESTS(test_provider_unload_effective, 2);
return 1;
}

Expand Down