Fix missing NULL check in MPI
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index ce1a072..023cab4 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -8,6 +8,25 @@
*/
/* BEGIN_CASE */
+void mpi_null( )
+{
+ mpi X, Y, Z;
+
+ mpi_init( &X );
+ mpi_init( &Y );
+ mpi_init( &Z );
+
+ TEST_ASSERT( mpi_get_bit( &X, 42 ) == 0 );
+ TEST_ASSERT( mpi_lsb( &X ) == 0 );
+ TEST_ASSERT( mpi_msb( &X ) == 0 );
+ TEST_ASSERT( mpi_size( &X ) == 0 );
+
+exit:
+ mpi_free( &X );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
void mpi_read_write_string( int radix_X, char *input_X, int radix_A,
char *input_A, int output_size, int result_read,
int result_write )