Move the one non-crypto-specific PSA helper macro to a new header

Create a new header file psa_helpers.h and put the one helper macro
that isn't specific to PSA crypto there. Use this header file in the
ITS test suite.

tests/Makefile

@@ -105,6 +105,7 @@ $(BINARIES): %$(EXEXT): %.c $(DEP)
 	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) $<	$(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
 
 $(filter test_suite_psa_crypto%, $(BINARIES)): psa_crypto_helpers.h
+$(filter test_suite_psa_%, $(BINARIES)): psa_helpers.h
 
 clean:
 ifndef WINDOWS

tests/psa_crypto_helpers.h

@@ -1,5 +1,5 @@
 /*
- * Helper functions for tests that use the PSA API.
+ * Helper functions for tests that use the PSA Crypto API.
  */
 /*  Copyright (C) 2019, ARM Limited, All Rights Reserved
  *  SPDX-License-Identifier: Apache-2.0
@@ -22,18 +22,9 @@
 #ifndef PSA_CRYPTO_HELPERS_H
 #define PSA_CRYPTO_HELPERS_H
 
-#if defined(MBEDTLS_PSA_CRYPTO_SPM)
-#include "spm/psa_defs.h"
-#endif
-#include <psa/crypto.h>
+#include "psa_helpers.h"
 
-/** Evaluate an expression and fail the test case if it returns an error.
- *
- * \param expr      The expression to evaluate. This is typically a call
- *                  to a \c psa_xxx function that returns a value of type
- *                  #psa_status_t.
- */
-#define PSA_ASSERT( expr ) TEST_EQUAL( ( expr ), PSA_SUCCESS )
+#include <psa/crypto.h>
 
 static int test_helper_is_psa_pristine( int line, const char *file )
 {
@@ -60,7 +51,7 @@ static int test_helper_is_psa_pristine( int line, const char *file )
     return( msg == NULL );
 }
 
-/** Check that no PSA slots are in use.
+/** Check that no PSA Crypto key slots are in use.
  */
 #define ASSERT_PSA_PRISTINE( )                                    \
     do                                                            \
@@ -76,7 +67,7 @@ static void test_helper_psa_done( int line, const char *file )
     mbedtls_psa_crypto_free( );
 }
 
-/** Shut down the PSA subsystem. Expect a clean shutdown, with no slots
+/** Shut down the PSA Crypto subsystem. Expect a clean shutdown, with no slots
  * in use.
  */
 #define PSA_DONE( ) test_helper_psa_done( __LINE__, __FILE__ )

tests/psa_helpers.h

@@ -0,0 +1,37 @@
+/*
+ * Helper functions for tests that use any PSA API.
+ */
+/*  Copyright (C) 2019, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#ifndef PSA_HELPERS_H
+#define PSA_HELPERS_H
+
+#if defined(MBEDTLS_PSA_CRYPTO_SPM)
+#include "spm/psa_defs.h"
+#endif
+
+/** Evaluate an expression and fail the test case if it returns an error.
+ *
+ * \param expr      The expression to evaluate. This is typically a call
+ *                  to a \c psa_xxx function that returns a value of type
+ *                  #psa_status_t.
+ */
+#define PSA_ASSERT( expr ) TEST_EQUAL( ( expr ), PSA_SUCCESS )
+
+#endif /* PSA_HELPERS_H */

tests/suites/test_suite_psa_its.function

@@ -1,7 +1,7 @@
 /* BEGIN_HEADER */
 #include "../library/psa_crypto_its.h"
 
-#define PSA_ASSERT( expr ) TEST_EQUAL( ( expr ), PSA_SUCCESS )
+#include "psa_helpers.h"
 
 /* Internal definitions of the implementation, copied for the sake of
  * some of the tests and of the cleanup code. */