diff --git a/tests/opt-testcases/tls13-kex-modes.sh b/tests/opt-testcases/tls13-kex-modes.sh
index 1d6a1b2638..03de865026 100755
--- a/tests/opt-testcases/tls13-kex-modes.sh
+++ b/tests/opt-testcases/tls13-kex-modes.sh
@@ -1948,6 +1948,231 @@ run_test    "TLS 1.3Client: m->m psk_ephemeral / all, fail - no common psk" \
             -c "client hello, adding psk_key_exchange_modes extension" \
             -s "ClientHello message misses mandatory extensions."
 
+# ephemeral mode in client
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral / psk, fail - no common key exchange mode" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            1 \
+            -s "ClientHello message misses mandatory extensions."
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral / psk_ephemeral, fail - no common key exchange mode" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk_ephemeral" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            1 \
+            -s "ClientHello message misses mandatory extensions."
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral / ephemeral, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            0 \
+            -c "HTTP/1.0 200 OK"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral / ephemeral_all, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            0 \
+            -c "HTTP/1.0 200 OK"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral / psk_all, fail - no common key exchange mode" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            1 \
+            -s "ClientHello message misses mandatory extensions."
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral / all, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            0 \
+            -c "HTTP/1.0 200 OK"
+
+# ephemeral_all mode in client
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / psk, fail - no common key exchange mode" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            1 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -s "ClientHello message misses mandatory extensions."
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / psk_ephemeral, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -c "HTTP/1.0 200 OK"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / psk_ephemeral, fail - no common identity" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0d0e0f tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -s "No matched PSK or ticket" \
+            -s "key exchange mode: ephemeral"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / psk_ephemeral, fail - no common psk" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "skip pre_shared_key extensions" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -s "key exchange mode: ephemeral"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / ephemeral, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -s "key exchange mode: ephemeral" \
+            -c "HTTP/1.0 200 OK"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / ephemeral_all, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -c "HTTP/1.0 200 OK"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / ephemeral_all, good - fallback to ephemeral" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0d0e0f tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -s "No matched PSK or ticket" \
+            -s "key exchange mode: ephemeral"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / ephemeral_all, good - fallback to ephemeral" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "skip pre_shared_key extensions" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -s "key exchange mode: ephemeral"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / psk_all, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -c "HTTP/1.0 200 OK"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / psk_all, fail - no common identity" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0d0e0f tls13_kex_modes=ephemeral_all" \
+            1 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -s "No matched PSK or ticket" \
+            -s "ClientHello message misses mandatory extensions."
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / psk_all, fail - no common psk" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk_all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            1 \
+            -c "skip pre_shared_key extensions" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -s "ClientHello message misses mandatory extensions."
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / all, good" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -c "HTTP/1.0 200 OK"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / all, fail - no common identity" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0d0e0f tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -c "client hello, adding PSK binder list" \
+            -s "No matched PSK or ticket" \
+            -s "key exchange mode: ephemeral"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+run_test    "TLS 1.3Client: m->m ephemeral_all / all, fail - no common psk" \
+            "$P_SRV nbio=2 debug_level=5 force_version=tls13 psk=010203 psk_identity=0a0b0c tls13_kex_modes=all" \
+            "$P_CLI nbio=2 debug_level=5 force_version=tls13 psk_identity=0a0b0c tls13_kex_modes=ephemeral_all" \
+            0 \
+            -c "skip pre_shared_key extensions" \
+            -c "client hello, adding psk_key_exchange_modes extension" \
+            -s "key exchange mode: ephemeral"
+
 #OPENSSL-SERVER psk mode
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3