diff --git a/test/default/chacha20.c b/test/default/chacha20.c
index 862f2987..03863040 100644
--- a/test/default/chacha20.c
+++ b/test/default/chacha20.c
@@ -37,6 +37,8 @@ int main(void)
 {
     tv();
 
+    assert(crypto_stream_chacha20_keybytes() > 0U);
+    assert(crypto_stream_chacha20_noncebytes() > 0U);
+
     return 0;    
 }
-
diff --git a/test/default/core3.c b/test/default/core3.c
index f190568b..ebbb6357 100644
--- a/test/default/core3.c
+++ b/test/default/core3.c
@@ -37,5 +37,11 @@ int main(void)
   } while (++in[9]);
   crypto_hash_sha256(h,output,sizeof output);
   for (i = 0;i < 32;++i) printf("%02x",h[i]); printf("\n");
+
+  assert(crypto_core_salsa20_outputbytes() > 0U);
+  assert(crypto_core_salsa20_inputbytes() > 0U);
+  assert(crypto_core_salsa20_keybytes() > 0U);
+  assert(crypto_core_salsa20_constbytes() > 0U);
+
   return 0;
 }
diff --git a/test/default/sign.c b/test/default/sign.c
index 0208b7fe..657f84af 100644
--- a/test/default/sign.c
+++ b/test/default/sign.c
@@ -1138,5 +1138,15 @@ int main(void)
     printf("pk: [%s]\n", pk_hex);
     printf("sk: [%s]\n", sk_hex);
 
+    assert(crypto_sign_bytes() > 0U);
+    assert(crypto_sign_seedbytes() > 0U);
+    assert(crypto_sign_publickeybytes() > 0U);
+    assert(crypto_sign_secretkeybytes() > 0U);
+    assert(strcmp(crypto_sign_primitive(), "ed25519") == 0);
+    assert(crypto_sign_bytes() == crypto_sign_ed25519_bytes());
+    assert(crypto_sign_seedbytes() == crypto_sign_ed25519_seedbytes());
+    assert(crypto_sign_publickeybytes() == crypto_sign_ed25519_publickeybytes());
+    assert(crypto_sign_secretkeybytes() == crypto_sign_ed25519_secretkeybytes());
+
     return 0;
 }