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MPS Reader Tests: Request more data than what's available

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Signed-off-by: Hanno Becker <hanno.becker@arm.com>
This commit is contained in:
Hanno Becker 2021-01-12 08:14:38 +00:00
parent 7973b2dcac
commit 7d86b74cef
2 changed files with 35 additions and 0 deletions
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3
tests/suites/test_suite_mps.data
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@ -21,3 +21,6 @@ mbedtls_mps_reader_no_pausing_multiple_steps_multiple_rounds:0
MPS Reader: Multiple steps, multiple rounds, pausing enabled but unused MPS Reader: Multiple steps, multiple rounds, pausing enabled but unused
mbedtls_mps_reader_no_pausing_multiple_steps_multiple_rounds:1 mbedtls_mps_reader_no_pausing_multiple_steps_multiple_rounds:1
MPS Reader: Pausing needed but disabled
mbedtls_mps_reader_pausing_needed_disabled:

32
tests/suites/test_suite_mps.function
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@ -204,3 +204,35 @@ void mbedtls_mps_reader_no_pausing_multiple_steps_multiple_rounds( int with_acc
mbedtls_reader_free( &rd ); mbedtls_reader_free( &rd );
} }
/* END_CASE */ /* END_CASE */
/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
void mbedtls_mps_reader_pausing_needed_disabled()
{
/* This test exercises the behaviour of the MPS reader when a read requests
* of the consumer exceeds what has been provided by the producer, and when
* no accumulator is available in the reader.
*
* In this case, we expect the reader to fail.
*/
unsigned char buf[100];
unsigned char *tmp;
mbedtls_reader rd;
for( int i=0; (unsigned) i < sizeof( buf ); i++ )
buf[i] = (unsigned char) i;
/* Preparation (lower layer) */
mbedtls_reader_init( &rd, NULL, 0 );
TEST_ASSERT( mbedtls_reader_feed( &rd, buf, sizeof( buf ) ) == 0 );
/* Consumption (upper layer) */
TEST_ASSERT( mbedtls_reader_get( &rd, 50, &tmp, NULL ) == 0 );
ASSERT_COMPARE( tmp, 50, buf, 50 );
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
TEST_ASSERT( mbedtls_reader_get( &rd, 100, &tmp, NULL ) ==
MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
/* Wrapup (lower layer) */
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) ==
MBEDTLS_ERR_MPS_READER_NEED_ACCUMULATOR );
mbedtls_reader_free( &rd );
}
/* END_CASE */