Add tests for mbedtls_xor
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/tests/suites/test_suite_common.data b/tests/suites/test_suite_common.data
new file mode 100644
index 0000000..500852d
--- /dev/null
+++ b/tests/suites/test_suite_common.data
@@ -0,0 +1,20 @@
+Block xor, length 0
+mbedtls_xor:0
+
+Block xor, length 1
+mbedtls_xor:1
+
+Block xor, length 3
+mbedtls_xor:3
+
+Block xor, length 4
+mbedtls_xor:4
+
+Block xor, length 7
+mbedtls_xor:7
+
+Block xor, length 8
+mbedtls_xor:8
+
+Block xor, length 16
+mbedtls_xor:16
diff --git a/tests/suites/test_suite_common.function b/tests/suites/test_suite_common.function
new file mode 100644
index 0000000..17eae27
--- /dev/null
+++ b/tests/suites/test_suite_common.function
@@ -0,0 +1,76 @@
+/* BEGIN_HEADER */
+#include "../library/common.h"
+
+void fill_arrays( unsigned char *a, unsigned char *b, unsigned char *r1, unsigned char *r2, size_t n )
+{
+ for ( size_t i = 0; i < n; i++ )
+ {
+ a[i] = (unsigned char) i * 3;
+ b[i] = (unsigned char) i * 3 + 1;
+ r1[i] = (unsigned char) i * 3 + 2;
+ r2[i] = r1[i];
+ }
+}
+/* END_HEADER */
+
+/* BEGIN_CASE */
+void mbedtls_xor( int len )
+{
+ size_t n = (size_t) len;
+ unsigned char *a = NULL, *b = NULL, *r1 = NULL, *r2 = NULL;
+ ASSERT_ALLOC( a, n );
+ ASSERT_ALLOC( b, n );
+ ASSERT_ALLOC( r1, n );
+ ASSERT_ALLOC( r2, n );
+
+ /* Test non-overlapping */
+ fill_arrays( a, b, r1, r2, n );
+ for ( size_t i = 0; i < n; i++ )
+ {
+ r1[i] = a[i] ^ b[i];
+ }
+ mbedtls_xor( r2, a, b, n );
+ ASSERT_COMPARE( r1, n, r2, n );
+
+ /* Test r == a */
+ fill_arrays( a, b, r1, r2, n );
+ for ( size_t i = 0; i < n; i++ )
+ {
+ r1[i] = r1[i] ^ b[i];
+ }
+ mbedtls_xor( r2, r2, b, n );
+ ASSERT_COMPARE( r1, n, r2, n );
+
+ /* Test r == b */
+ fill_arrays( a, b, r1, r2, n );
+ for ( size_t i = 0; i < n; i++ )
+ {
+ r1[i] = a[i] ^ r1[i];
+ }
+ mbedtls_xor( r2, a, r2, n );
+ ASSERT_COMPARE( r1, n, r2, n );
+
+ /* Test a == b */
+ fill_arrays( a, b, r1, r2, n );
+ for ( size_t i = 0; i < n; i++ )
+ {
+ r1[i] = a[i] ^ a[i];
+ }
+ mbedtls_xor( r2, a, a, n );
+ ASSERT_COMPARE( r1, n, r2, n );
+
+ /* Test a == b == r */
+ fill_arrays( a, b, r1, r2, n );
+ for ( size_t i = 0; i < n; i++ )
+ {
+ r1[i] = r1[i] ^ r1[i];
+ }
+ mbedtls_xor( r2, r2, r2, n );
+ ASSERT_COMPARE( r1, n, r2, n );
+exit:
+ if ( a != NULL ) mbedtls_free( a );
+ if ( a != NULL ) mbedtls_free( b );
+ if ( r1 != NULL ) mbedtls_free( r1 );
+ if ( r2 != NULL ) mbedtls_free( r2 );
+}
+/* END_CASE */