diff --git a/tests/tests-skeletons/Makefile.am b/tests/tests-skeletons/Makefile.am
index 2e13f74..2562443 100644
--- a/tests/tests-skeletons/Makefile.am
+++ b/tests/tests-skeletons/Makefile.am
@@ -1,19 +1,20 @@
 @CODE_COVERAGE_RULES@
 
-check_PROGRAMS = \
-	check-ber_tlv_tag	\
-	check-length		\
-	check-OIDs		\
-	check-GeneralizedTime	\
-	check-OCTET_STRING	\
-	check-UTF8String	\
-	check-UTCTime		\
-	check-INTEGER		\
-	check-REAL		\
-	check-XER		\
-	check-OER-INTEGER	\
-	check-PER		\
-	check-PER-INTEGER
+check_PROGRAMS =            \
+    check-ber_tlv_tag       \
+    check-length            \
+    check-OIDs              \
+    check-GeneralizedTime   \
+    check-OCTET_STRING      \
+    check-UTF8String        \
+    check-UTCTime           \
+    check-INTEGER           \
+    check-REAL              \
+    check-XER               \
+    check-OER-INTEGER       \
+    check-OER-NativeEnumerated \
+    check-PER               \
+    check-PER-INTEGER
 
 #Filter out the coverage options from CFLAGS as we don't need
 #code coverage data for the tests executables
diff --git a/tests/tests-skeletons/check-OER-NativeEnumerated.c b/tests/tests-skeletons/check-OER-NativeEnumerated.c
new file mode 100644
index 0000000..20c8b88
--- /dev/null
+++ b/tests/tests-skeletons/check-OER-NativeEnumerated.c
@@ -0,0 +1,192 @@
+#include <stdio.h>
+#include <assert.h>
+
+#include <asn_codecs.h>
+#include <NativeEnumerated.h>
+
+#define CHECK_DECODE(code, a, b, c)    check_decode(__LINE__, code, a, b, c)
+#define CHECK_ROUNDTRIP(a) check_roundtrip(__LINE__, a);
+
+static void
+check_decode(int lineno, enum asn_dec_rval_code_e code, intmax_t control, const char *buf, size_t size) {
+    static char *code_s[] = { "RC_OK", "RC_WMORE", "RC_FAIL", "<error>" };
+
+    fprintf(stderr, "\n%d: OER decode (control %" PRIdMAX ")\n", lineno, control);
+
+    long value;
+    long *value_ptr = &value;
+    asn_dec_rval_t ret;
+
+    fprintf(stderr, "%d: buf[%zu]={%d, %d, ...}\n", lineno, size,
+            size <= 0 ? -1 : ((const uint8_t *)buf)[0],
+            size <= 1 ? -1 : ((const uint8_t *)buf)[1]);
+
+    ret = NativeEnumerated_decode_oer(NULL, &asn_DEF_NativeEnumerated, NULL,
+                                      (void **)&value_ptr, buf, size);
+    if(ret.code != RC_OK) {
+        /* Basic OER decode does not work */
+        fprintf(stderr, "%d: Failed oer_decode(ctl=%" PRIdMAX ", size=%zu)\n",
+                lineno, control, size);
+        if(ret.code == code) {
+            fprintf(stderr, "  (That was expected)\n");
+            return;
+        } else {
+            fprintf(
+                stderr, "  Unexpected return code %s (%d) expected %s\n",
+                code_s[(unsigned)ret.code <= RC_FAIL ? RC_FAIL : (RC_FAIL + 1)],
+                (int)ret.code, code_s[code]);
+            assert(ret.code == code);
+        }
+    } else {
+        intmax_t outcome = value;
+        if(outcome != control) {
+            /* Decoded value is wrong */
+            fprintf(stderr,
+                    "%d: Decode result %" PRIdMAX " is not expected %" PRIdMAX
+                    "\n",
+                    lineno, outcome, control);
+            assert(outcome == control);
+        }
+    }
+
+    fprintf(stderr, "%d: Decode result %" PRIdMAX "\n", lineno, control);
+}
+
+static void
+dump_data(int lineno, const uint8_t *buf, size_t size) {
+    const uint8_t *p = buf;
+    const uint8_t *end = buf + size;
+
+    fprintf(stderr, "%d: Encoded: [", lineno);
+
+    for(; p < end; p++) {
+        fprintf(stderr, "\\x%02x", *(const unsigned char *)p);
+    }
+    fprintf(stderr, "] (%zu bytes)\n", size);
+}
+
+static void
+check_roundtrip(int lineno, intmax_t control) {
+    uint8_t tmpbuf[32];
+    size_t tmpbuf_size;
+
+    fprintf(stderr, "\n%d: OER round-trip value %" PRIdMAX "\n", lineno, control);
+
+    asn_enc_rval_t er;
+    asn_dec_rval_t ret;
+
+    long value_out = control;
+    long value_in = -42;
+    long *value_in_ptr = &value_in;
+
+    er = oer_encode_to_buffer(&asn_DEF_NativeEnumerated, NULL,
+                              &value_out, tmpbuf, sizeof(tmpbuf));
+    if(er.encoded == -1) {
+        fprintf(stderr, "%d: OER encode failed for %s\n", lineno,
+                er.failed_type ? er.failed_type->name : "<none>");
+        assert(er.encoded != -1);
+    }
+    tmpbuf_size = er.encoded;
+
+    dump_data(lineno, tmpbuf, tmpbuf_size);
+
+    ret = asn_DEF_NativeEnumerated.op->oer_decoder(0, &asn_DEF_NativeEnumerated,
+                                                   NULL, (void **)&value_in_ptr,
+                                                   tmpbuf, tmpbuf_size);
+    if(ret.code != RC_OK) {
+        /* Basic OER decode does not work */
+        fprintf(stderr, "%d: Failed oer_decode(value=%" PRIdMAX ", size=%zu)\n",
+                lineno, control, tmpbuf_size);
+        assert(ret.code == 0);
+    } else {
+        intmax_t outcome = value_in;
+        if(outcome != control) {
+            /* Decoded value is wrong */
+            fprintf(stderr,
+                    "%d: Decode result %" PRIdMAX " is not expected %" PRIdMAX
+                    "\n",
+                    lineno, outcome, control);
+            assert(outcome == control);
+        }
+    }
+
+    fprintf(stderr, "%d: Decode result %" PRIdMAX "\n", lineno, control);
+}
+
+int
+main() {
+	CHECK_DECODE(RC_WMORE, 0, "", 0);
+	CHECK_DECODE(RC_OK, 0, "\x00", 1);
+	CHECK_DECODE(RC_FAIL, 0, "\x00", 1);
+	CHECK_DECODE(RC_WMORE, 0, "", 0);
+	CHECK_DECODE(RC_WMORE, 0, "", 0);
+	CHECK_DECODE(RC_OK, 0, "\x00", 1);
+	CHECK_DECODE(RC_OK, 0, "\x00", 1);
+
+	CHECK_DECODE(RC_OK, 0, "\x00", 1);
+	CHECK_DECODE(RC_OK, 1, "\x01", 1);
+	CHECK_DECODE(RC_FAIL, 0, "\xff", 1);
+	CHECK_DECODE(RC_FAIL, 0, "\x89", 1);
+	CHECK_DECODE(RC_WMORE, 0, "\x84", 1);
+	CHECK_DECODE(RC_WMORE, 0, "\x84\x00", 3);
+	CHECK_DECODE(RC_WMORE, 0, "\x84\x00\x00", 3);
+	CHECK_DECODE(RC_WMORE, 0, "\x84\x00\x00\x00", 4);
+	CHECK_DECODE(RC_OK, 0, "\x84\x00\x00\x00\x00", 5);
+	CHECK_DECODE(RC_OK, 1, "\x84\x00\x00\x00\x01", 5);
+	CHECK_DECODE(RC_OK, 127, "\x7f", 1);
+	CHECK_DECODE(RC_OK, 127, "\x81\x7f", 2);
+	CHECK_DECODE(RC_OK, 255, "\x82\x00\xff", 3);
+	CHECK_DECODE(RC_OK, -1, "\x81\xff", 2);
+	CHECK_DECODE(RC_OK, -1, "\x82\xff\xff", 3);
+
+	CHECK_DECODE(RC_OK, 1, "\x01\x00", 2);
+	CHECK_DECODE(RC_OK, 1, "\x01\x01", 2);
+	CHECK_DECODE(RC_OK, -1, "\x81\xff", 2);
+	CHECK_DECODE(RC_WMORE, -1, "\x82\x00\xff", 2);
+
+    CHECK_ROUNDTRIP(0);
+    CHECK_ROUNDTRIP(1);
+    CHECK_ROUNDTRIP(-1);
+    CHECK_ROUNDTRIP(-127);
+    CHECK_ROUNDTRIP(-128);
+    CHECK_ROUNDTRIP(-129);
+    CHECK_ROUNDTRIP(126);
+    CHECK_ROUNDTRIP(127);
+    CHECK_ROUNDTRIP(128);
+    CHECK_ROUNDTRIP(-65000);
+    CHECK_ROUNDTRIP(65000);
+    CHECK_ROUNDTRIP(65535);
+    CHECK_ROUNDTRIP(-65535);
+    CHECK_ROUNDTRIP(-65536);
+    CHECK_ROUNDTRIP(65536);
+    CHECK_ROUNDTRIP(32000);
+
+    for(size_t i = 0; i < 7 ; i++) {
+        intmax_t value = (intmax_t)1 << i;
+        CHECK_ROUNDTRIP(value);
+        value = -value;
+        CHECK_ROUNDTRIP(value);
+    }
+
+    for(size_t i = 0; i < 16 ; i++) {
+        intmax_t value = (intmax_t)1 << i;
+        CHECK_ROUNDTRIP(value);
+        value = -value;
+        CHECK_ROUNDTRIP(value);
+    }
+
+    for(size_t i = 0; i < 32 ; i++) {
+        intmax_t value = (intmax_t)1 << i;
+        CHECK_ROUNDTRIP(value);
+        value = -value;
+        CHECK_ROUNDTRIP(value);
+    }
+
+    for(size_t i = 0; i < 8 * sizeof(intmax_t) ; i++) {
+        intmax_t value = (intmax_t)1 << i;
+        CHECK_ROUNDTRIP(value);
+        value = -value;
+        CHECK_ROUNDTRIP(value);
+    }
+
+}