diff --git a/tests/suites/test_suite_asn1parse.data b/tests/suites/test_suite_asn1parse.data
index e26f93a..6a66ee9 100644
--- a/tests/suites/test_suite_asn1parse.data
+++ b/tests/suites/test_suite_asn1parse.data
@@ -481,6 +481,60 @@
 Not a SEQUENCE (not SEQUENCE)
 get_sequence_of:"3100":0x04:"":MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
+Traverse empty SEQUENCE
+traverse_sequence_of:"3000":0:0:0:0:"":0
+
+Traverse empty SEQUENCE plus trailing garbage
+traverse_sequence_of:"30007e":0:0:0:0:"":MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
+
+Traverse SEQUENCE of INTEGER: 1 INTEGER
+traverse_sequence_of:"30050203123456":0xff:0x02:0:0:"4,0x02,3":0
+
+Traverse SEQUENCE of INTEGER: 2 INTEGERs
+traverse_sequence_of:"30080203123456020178":0xff:0x02:0:0:"4,0x02,3,9,0x02,1":0
+
+Traverse SEQUENCE of INTEGER: INTEGER, NULL
+traverse_sequence_of:"300702031234560500":0xff:0x02:0:0:"4,0x02,3":MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+
+Traverse SEQUENCE of INTEGER: NULL, INTEGER
+traverse_sequence_of:"300705000203123456":0xff:0x02:0:0:"":MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+
+Traverse SEQUENCE of ANY: NULL, INTEGER
+traverse_sequence_of:"300705000203123456":0:0:0:0:"4,0x05,0,6,0x02,3":0
+
+Traverse SEQUENCE of ANY, skip non-INTEGER: INTEGER, NULL
+traverse_sequence_of:"300702031234560500":0:0:0xff:0x02:"4,0x02,3":0
+
+Traverse SEQUENCE of ANY, skip non-INTEGER: NULL, INTEGER
+traverse_sequence_of:"300705000203123456":0:0:0xff:0x02:"6,0x02,3":0
+
+Traverse SEQUENCE of INTEGER, skip everything
+traverse_sequence_of:"30080203123456020178":0xff:0x02:0:1:"":0
+
+Traverse SEQUENCE of {NULL, OCTET STRING}, skip NULL: OS, NULL
+traverse_sequence_of:"300704031234560500":0xfe:0x04:0xff:0x04:"4,0x04,3":0
+
+Traverse SEQUENCE of {NULL, OCTET STRING}, skip NULL: NULL, OS
+traverse_sequence_of:"300705000403123456":0xfe:0x04:0xff:0x04:"6,0x04,3":0
+
+Traverse SEQUENCE of {NULL, OCTET STRING}, skip everything
+traverse_sequence_of:"300705000403123456":0xfe:0x04:0:1:"":0
+
+Traverse SEQUENCE of INTEGER, stop at 0: NULL
+traverse_sequence_of:"30020500":0xff:0x02:0:0:"":MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+
+Traverse SEQUENCE of INTEGER, stop at 0: INTEGER
+traverse_sequence_of:"30050203123456":0xff:0x02:0:0:"":RET_TRAVERSE_STOP
+
+Traverse SEQUENCE of INTEGER, stop at 0: INTEGER, NULL
+traverse_sequence_of:"300702031234560500":0xff:0x02:0:0:"":RET_TRAVERSE_STOP
+
+Traverse SEQUENCE of INTEGER, stop at 1: INTEGER, NULL
+traverse_sequence_of:"300702031234560500":0xff:0x02:0:0:"4,0x02,3":MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+
+Traverse SEQUENCE of INTEGER, stop at 1: INTEGER, INTEGER
+traverse_sequence_of:"30080203123456020178":0xff:0x02:0:0:"4,0x02,3":RET_TRAVERSE_STOP
+
 AlgorithmIdentifier, no params
 get_alg:"300506034f4944":4:3:0:0:0:7:0
 
diff --git a/tests/suites/test_suite_asn1parse.function b/tests/suites/test_suite_asn1parse.function
index 898f729..3419f03 100644
--- a/tests/suites/test_suite_asn1parse.function
+++ b/tests/suites/test_suite_asn1parse.function
@@ -170,6 +170,53 @@
     return( 0 );
 }
 
+typedef struct
+{
+    const unsigned char *input_start;
+    const char *description;
+} traverse_state_t;
+
+/* Value returned by traverse_callback if description runs out. */
+#define RET_TRAVERSE_STOP 1
+/* Value returned by traverse_callback if description has an invalid format
+ * (see traverse_sequence_of). */
+#define RET_TRAVERSE_ERROR 2
+
+
+static int traverse_callback( void *ctx, int tag,
+                              unsigned char *content, size_t len )
+{
+    traverse_state_t *state = ctx;
+    size_t offset;
+    const char *rest = state->description;
+    unsigned long n;
+
+    TEST_ASSERT( content > state->input_start );
+    offset = content - state->input_start;
+    test_set_step( offset );
+
+    if( *rest == 0 )
+        return( RET_TRAVERSE_STOP );
+    n = strtoul( rest, (char **) &rest, 0 );
+    TEST_EQUAL( n, offset );
+    TEST_EQUAL( *rest, ',' );
+    ++rest;
+    n = strtoul( rest, (char **) &rest, 0 );
+    TEST_EQUAL( n, (unsigned) tag );
+    TEST_EQUAL( *rest, ',' );
+    ++rest;
+    n = strtoul( rest, (char **) &rest, 0 );
+    TEST_EQUAL( n, len );
+    if( *rest == ',' )
+        ++rest;
+
+    state->description = rest;
+    return( 0 );
+
+exit:
+    return( RET_TRAVERSE_ERROR );
+}
+
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
@@ -507,6 +554,13 @@
                       const char *description,
                       int expected_result )
 {
+    /* The description string is a comma-separated list of integers.
+     * For each element in the SEQUENCE in input, description contains
+     * two integers: the offset of the element (offset from the start
+     * of input to the tag of the element) and the length of the
+     * element's contents.
+     * "offset1,length1,..." */
+
     mbedtls_asn1_sequence head = { { 0, 0, NULL }, NULL };
     mbedtls_asn1_sequence *cur;
     unsigned char *p = input->x;
@@ -554,6 +608,35 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
+void traverse_sequence_of( const data_t *input,
+                           int tag_must_mask, int tag_must_val,
+                           int tag_may_mask, int tag_may_val,
+                           const char *description,
+                           int expected_result )
+{
+    /* The description string is a comma-separated list of integers.
+     * For each element in the SEQUENCE in input, description contains
+     * three integers: the offset of the element's content (offset from
+     * the start of input to the content of the element), the element's tag,
+     * and the length of the element's contents.
+     * "offset1,tag1,length1,..." */
+
+    unsigned char *p = input->x;
+    traverse_state_t traverse_state = {input->x, description};
+    int ret;
+
+    ret = mbedtls_asn1_traverse_sequence_of( &p, input->x + input->len,
+                                             (uint8_t) tag_must_mask, (uint8_t) tag_must_val,
+                                             (uint8_t) tag_may_mask, (uint8_t) tag_may_val,
+                                             traverse_callback, &traverse_state );
+    if( ret == RET_TRAVERSE_ERROR )
+        goto exit;
+    TEST_EQUAL( ret, expected_result );
+    TEST_EQUAL( *traverse_state.description, 0 );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
 void get_alg( const data_t *input,
               int oid_offset, int oid_length,
               int params_tag, int params_offset, int params_length,