Remove entropy source overwrite in baremetal_test

-Do not overwrite MBEDTLS_ENTROPY_MAX_SOURCES in baremetal_test.h
-Skip tests that are not suitable for low number of entropy sources

configs/baremetal_test.h

@@ -48,7 +48,4 @@
 
 #undef MBEDTLS_NO_PLATFORM_ENTROPY
 
-#undef  MBEDTLS_ENTROPY_MAX_SOURCES
-#define MBEDTLS_ENTROPY_MAX_SOURCES 3
-
 #endif /* MBEDTLS_BAREMETAL_USER_CONFIG_H */

tests/suites/helpers.function

@@ -32,6 +32,8 @@
 #include "tinycrypt/ecc.h"
 #endif /* MBEDTLS_USE_TINYCRYPT */
 
+#include "mbedtls/entropy.h"
+
 #ifdef _MSC_VER
 #include <basetsd.h>
 typedef UINT8 uint8_t;
@@ -300,6 +302,10 @@ jmp_buf jmp_tmp;
 #define ENTROPY_HAVE_STRONG
 #endif
 
+/* Set flag if number of entropy sources is more than 2 */
+#if ( MBEDTLS_ENTROPY_MAX_SOURCES > 2 )
+#define ENTROPY_SOURCE_COUNT_MORE_THAN_TWO
+#endif
 
 /*----------------------------------------------------------------------------*/
 /* Helper Functions */

tests/suites/test_suite_entropy.function

@@ -193,7 +193,7 @@ void entropy_func_len( int len, int ret )
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:ENTROPY_SOURCE_COUNT_MORE_THAN_TWO */
 void entropy_source_fail( char * path )
 {
     mbedtls_entropy_context ctx;
@@ -225,7 +225,7 @@ exit:
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:ENTROPY_HAVE_STRONG */
+/* BEGIN_CASE depends_on:ENTROPY_HAVE_STRONG:ENTROPY_SOURCE_COUNT_MORE_THAN_TWO */
 void entropy_threshold( int threshold, int chunk_size, int result )
 {
     mbedtls_entropy_context ctx;