New test suite to report configuration options

Add a test suite intended to report configuration options in the outcome
file: we're only interested in SKIP vs PASS.

Add a few test cases for some interesting combinations of options. The
selection here is just for illustration purposes, more will be added later.

A subsequent commit will automatically generate test cases for single options.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

tests/suites/test_suite_config.crypto_combinations.data

@@ -0,0 +1,9 @@
+# Interesting combinations of low-level crypto options
+
+Config: ECC: Weierstrass curves only
+depends_on:MBEDTLS_ECP_SHORT_WEIERSTRASS_ENABLED:!MBEDTLS_ECP_MONTGOMERY_ENABLED
+pass:
+
+Config: ECC: Montgomery curves only
+depends_on:!MBEDTLS_ECP_SHORT_WEIERSTRASS_ENABLED:MBEDTLS_ECP_MONTGOMERY_ENABLED
+pass:

tests/suites/test_suite_config.function

@@ -0,0 +1,14 @@
+/* BEGIN_HEADER */
+
+/* END_HEADER */
+
+/* BEGIN_CASE */
+/* This test case always passes. It is intended solely for configuration
+ * reporting in the outcome file. Write test cases using this function
+ * with dependencies to record in which configurations the dependencies
+ * are met. */
+void pass()
+{
+    goto exit;
+}
+/* END_CASE */

tests/suites/test_suite_config.psa_combinations.data

@@ -0,0 +1,9 @@
+# Interesting combinations of PSA options
+
+Config: PSA_WANT_ALG_ECDSA without PSA_WANT_ALG_DETERMINISTIC_ECDSA
+depends_on:PSA_WANT_ALG_ECDSA:!PSA_WANT_ALG_DETERMINISTIC_ECDSA
+pass:
+
+Config: PSA_WANT_ALG_DETERMINSTIC_ECDSA without PSA_WANT_ALG_ECDSA
+depends_on:PSA_WANT_ALG_DETERMINISTIC_ECDSA:!PSA_WANT_ALG_ECDSA
+pass:

tests/suites/test_suite_config.tls_combinations.data

@@ -0,0 +1,9 @@
+# Interesting combinations of TLS options
+
+Config: TLS 1.2 without TLS 1.3
+depends_on:MBEDTLS_SSL_PROTO_TLS1_2:!MBEDTLS_SSL_PROTO_TLS1_3
+pass:
+
+Config: TLS 1.3 without TLS 1.2
+depends_on:MBEDTLS_SSL_PROTO_TLS1_3:!MBEDTLS_SSL_PROTO_TLS1_2
+pass: