TLSSocketWrapper: Add unit test for set_root_ca_cert_path

Author: facchinm

connectivity/nanostack/coap-service/test/coap-service/unittest/stub/mbedtls_stub.c

@@ -299,6 +299,12 @@ int mbedtls_x509_crt_parse(mbedtls_x509_crt *a, const unsigned char *b, size_t c
     return mbedtls_stub.expected_int;
 }
 
+int mbedtls_x509_crt_parse_path(mbedtls_x509_crt *a, const char *b)
+{
+    // means 5 valid certificates found
+    return 5;
+}
+
 int mbedtls_x509_crt_info(char *buf, size_t size, const char *prefix,
                           const mbedtls_x509_crt *crt)
 {

connectivity/netsocket/tests/UNITTESTS/netsocket/TLSSocketWrapper/test_TLSSocketWrapper.cpp

@@ -399,6 +399,12 @@ TEST_F(TestTLSSocketWrapper, set_root_ca_cert_invalid)
     EXPECT_EQ(wrapper->set_root_ca_cert(cert, strlen(cert)), NSAPI_ERROR_PARAMETER);
 }
 
+TEST_F(TestTLSSocketWrapper, set_root_ca_cert_path)
+{
+    EXPECT_EQ(transport->open(&stack), NSAPI_ERROR_OK);
+    EXPECT_EQ(wrapper->set_root_ca_cert_path("/"), NSAPI_ERROR_OK);
+}
+
 TEST_F(TestTLSSocketWrapper, set_client_cert_key)
 {
     EXPECT_EQ(wrapper->get_own_cert(), static_cast<mbedtls_x509_crt *>(NULL));

connectivity/netsocket/tests/UNITTESTS/netsocket/TLSSocketWrapper/tls_test_config.h

@@ -19,6 +19,6 @@
 #define UNITTESTS_FEATURES_NETSOCKET_TLSSOCKET_TLS_TEST_CONFIG_H_
 
 #define MBEDTLS_SSL_CLI_C
-
+#define MBEDTLS_FS_IO
 
 #endif /* UNITTESTS_FEATURES_NETSOCKET_TLSSOCKET_TLS_TEST_CONFIG_H_ */