selftest: Expose in public API

src/secp256k1.c

@@ -73,6 +73,12 @@ static const secp256k1_context secp256k1_context_static_ = {
 const secp256k1_context *secp256k1_context_static = &secp256k1_context_static_;
 const secp256k1_context *secp256k1_context_no_precomp = &secp256k1_context_static_;
 
+void secp256k1_selftest(void) {
+    if (!secp256k1_selftest_passes()) {
+        secp256k1_callback_call(&default_error_callback, "self test failed");
+    }
+}
+
 size_t secp256k1_context_preallocated_size(unsigned int flags) {
     size_t ret = sizeof(secp256k1_context);
     /* A return value of 0 is reserved as an indicator for errors when we call this function internally. */
@@ -97,9 +103,7 @@ secp256k1_context* secp256k1_context_preallocated_create(void* prealloc, unsigne
     size_t prealloc_size;
     secp256k1_context* ret;
 
-    if (!secp256k1_selftest_passes()) {
-        secp256k1_callback_call(&default_error_callback, "self test failed");
-    }
+    secp256k1_selftest();
 
     prealloc_size = secp256k1_context_preallocated_size(flags);
     if (prealloc_size == 0) {

src/tests.c

@@ -141,6 +141,11 @@ void random_scalar_order_b32(unsigned char *b32) {
     secp256k1_scalar_get_b32(b32, &num);
 }
 
+void run_selftest_tests(void) {
+    /* Test public API */
+    secp256k1_selftest();
+}
+
 void run_context_tests(int use_prealloc) {
     secp256k1_pubkey pubkey;
     secp256k1_pubkey zero_pubkey;
@@ -7388,6 +7393,7 @@ int main(int argc, char **argv) {
     secp256k1_testrand_init(argc > 2 ? argv[2] : NULL);
 
     /* initialize */
+    run_selftest_tests();
     run_context_tests(0);
     run_context_tests(1);
     run_scratch_tests();