Add test function for opaque driver (simply returns PSA_ERROR_NOT_SUPPORTED), and address other review comments.

Signed-off-by: Aditya Deshpande <aditya.deshpande@arm.com>
diff --git a/tests/include/test/drivers/key_agreement.h b/tests/include/test/drivers/key_agreement.h
index ec65159..8f28cef 100644
--- a/tests/include/test/drivers/key_agreement.h
+++ b/tests/include/test/drivers/key_agreement.h
@@ -59,16 +59,16 @@
     size_t shared_secret_size,
     size_t *shared_secret_length );
 
-// psa_status_t mbedtls_test_opaque_key_agreement(
-//     const psa_key_attributes_t *attributes,
-//     const uint8_t *key_buffer,
-//     size_t key_buffer_size,
-//     psa_algorithm_t alg,
-//     const uint8_t *peer_key,
-//     size_t peer_key_length,
-//     uint8_t *shared_secret,
-//     size_t shared_secret_size,
-//     size_t *shared_secret_length );
+psa_status_t mbedtls_test_opaque_key_agreement(
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer,
+    size_t key_buffer_size,
+    psa_algorithm_t alg,
+    const uint8_t *peer_key,
+    size_t peer_key_length,
+    uint8_t *shared_secret,
+    size_t shared_secret_size,
+    size_t *shared_secret_length );
 
 #endif /*PSA_CRYPTO_DRIVER_TEST */
 #endif /* PSA_CRYPTO_TEST_DRIVERS_KEY_AGREEMENT_H */
diff --git a/tests/src/drivers/test_driver_key_agreement.c b/tests/src/drivers/test_driver_key_agreement.c
index 51301f8..3552f48 100644
--- a/tests/src/drivers/test_driver_key_agreement.c
+++ b/tests/src/drivers/test_driver_key_agreement.c
@@ -69,8 +69,8 @@
 
     if( PSA_ALG_IS_ECDH(alg) )
     {
-#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
-    (LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_ALG_ECDH)
+#if (defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
+    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_ALG_ECDH))
         return( libtestdriver1_mbedtls_psa_key_agreement_ecdh(
                     (const libtestdriver1_psa_key_attributes_t *) attributes,
                     key_buffer, key_buffer_size,
@@ -103,4 +103,27 @@
 
 }
 
+psa_status_t mbedtls_test_opaque_key_agreement(
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer,
+    size_t key_buffer_size,
+    psa_algorithm_t alg,
+    const uint8_t *peer_key,
+    size_t peer_key_length,
+    uint8_t *shared_secret,
+    size_t shared_secret_size,
+    size_t *shared_secret_length )
+{
+    (void) attributes;
+    (void) key_buffer;
+    (void) key_buffer_size;
+    (void) alg;
+    (void) peer_key;
+    (void) peer_key_length;
+    (void) shared_secret;
+    (void) shared_secret_size;
+    (void) shared_secret_length;
+    return( PSA_ERROR_NOT_SUPPORTED );
+}
+
 #endif /* MBEDTLS_PSA_CRYPTO_DRIVERS && PSA_CRYPTO_DRIVER_TEST */
diff --git a/tests/suites/test_suite_psa_crypto_driver_wrappers.data b/tests/suites/test_suite_psa_crypto_driver_wrappers.data
index 74b74da..6069a69 100644
--- a/tests/suites/test_suite_psa_crypto_driver_wrappers.data
+++ b/tests/suites/test_suite_psa_crypto_driver_wrappers.data
@@ -308,7 +308,7 @@
 key_agreement:PSA_ALG_ECDH:PSA_SUCCESS:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"04d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de":"":PSA_SUCCESS
 
 raw key agreement through driver: fallback
-depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256:MBEDLTS_PSA_BUILTIN_ALG_ECDH
+depends_on:PSA_WANT_ALG_ECDH:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:PSA_WANT_ECC_SECP_R1_256:MBEDTLS_PSA_BUILTIN_ALG_ECDH
 key_agreement:PSA_ALG_ECDH:PSA_ERROR_NOT_SUPPORTED:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"04d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de":"":PSA_SUCCESS
 
 raw key agreement through driver: error
diff --git a/tests/suites/test_suite_psa_crypto_driver_wrappers.function b/tests/suites/test_suite_psa_crypto_driver_wrappers.function
index 7fa3c94..5f38614 100644
--- a/tests/suites/test_suite_psa_crypto_driver_wrappers.function
+++ b/tests/suites/test_suite_psa_crypto_driver_wrappers.function
@@ -626,7 +626,6 @@
     PSA_DONE( );
     mbedtls_test_driver_key_agreement_hooks =
         mbedtls_test_driver_key_agreement_hooks_init();
-
 }
 
 /* END_CASE */