diff --git a/test/test_meshpacket_serializer/ports/test_encrypted.cpp b/test/test_meshpacket_serializer/ports/test_encrypted.cpp
index 9efc2fb1b..37cfc1626 100644
--- a/test/test_meshpacket_serializer/ports/test_encrypted.cpp
+++ b/test/test_meshpacket_serializer/ports/test_encrypted.cpp
@@ -1,27 +1,5 @@
 #include "../test_helpers.h"
 
-// test data initialization
-const int from = 0x11223344;
-const int to = 0x55667788;
-const int id = 0x9999;
-
-// Helper function to create a test encrypted packet
-meshtastic_MeshPacket create_test_encrypted_packet(uint32_t from, uint32_t to, uint32_t id, const char *data)
-{
-    meshtastic_MeshPacket packet = meshtastic_MeshPacket_init_zero;
-    packet.from = from;
-    packet.to = to;
-    packet.id = id;
-    packet.which_payload_variant = meshtastic_MeshPacket_encrypted_tag;
-
-    if (data) {
-        packet.encrypted.size = strlen(data);
-        memcpy(packet.encrypted.bytes, data, packet.encrypted.size);
-    }
-
-    return packet;
-}
-
 // Helper function for all encrypted packet assertions
 void assert_encrypted_packet(const std::string &json, meshtastic_MeshPacket packet)
 {
@@ -61,58 +39,20 @@ void assert_encrypted_packet(const std::string &json, meshtastic_MeshPacket pack
 // Test encrypted packet serialization
 void test_encrypted_packet_serialization()
 {
-    meshtastic_MeshPacket packet = meshtastic_MeshPacket_init_zero;
-    packet.from = 0x11223344;
-    packet.to = 0x55667788;
-    packet.id = 0x9999;
-    packet.which_payload_variant = meshtastic_MeshPacket_encrypted_tag;
-
-    // Add some dummy encrypted data
-    const char *encrypted_data = "encrypted_payload_data";
-    packet.encrypted.size = strlen(encrypted_data);
-    memcpy(packet.encrypted.bytes, encrypted_data, packet.encrypted.size);
-
+    const char *data = "encrypted_payload_data";
+    meshtastic_MeshPacket packet =
+        create_test_packet(meshtastic_PortNum_TEXT_MESSAGE_APP, reinterpret_cast<const uint8_t *>(data), strlen(data),
+                           meshtastic_MeshPacket_encrypted_tag);
     std::string json = MeshPacketSerializer::JsonSerializeEncrypted(&packet);
-    TEST_ASSERT_TRUE(json.length() > 0);
 
-    JSONValue *root = JSON::Parse(json.c_str());
-    TEST_ASSERT_NOT_NULL(root);
-    TEST_ASSERT_TRUE(root->IsObject());
-
-    JSONObject jsonObj = root->AsObject();
-
-    // Check basic packet fields
-    TEST_ASSERT_TRUE(jsonObj.find("from") != jsonObj.end());
-    TEST_ASSERT_EQUAL(0x11223344, (uint32_t)jsonObj["from"]->AsNumber());
-
-    TEST_ASSERT_TRUE(jsonObj.find("to") != jsonObj.end());
-    TEST_ASSERT_EQUAL(0x55667788, (uint32_t)jsonObj["to"]->AsNumber());
-
-    TEST_ASSERT_TRUE(jsonObj.find("id") != jsonObj.end());
-    TEST_ASSERT_EQUAL(0x9999, (uint32_t)jsonObj["id"]->AsNumber());
-
-    // Check that it has encrypted data fields (not "payload" but "bytes" and "size")
-    TEST_ASSERT_TRUE(jsonObj.find("bytes") != jsonObj.end());
-    TEST_ASSERT_TRUE(jsonObj["bytes"]->IsString());
-
-    TEST_ASSERT_TRUE(jsonObj.find("size") != jsonObj.end());
-    TEST_ASSERT_EQUAL(22, (int)jsonObj["size"]->AsNumber()); // strlen("encrypted_payload_data") = 22
-
-    // The encrypted data should be hex-encoded
-    std::string encrypted_hex = jsonObj["bytes"]->AsString();
-    TEST_ASSERT_TRUE(encrypted_hex.length() > 0);
-    // Should be twice the size of the original data (hex encoding)
-    TEST_ASSERT_EQUAL(44, encrypted_hex.length()); // 22 * 2 = 44
-
-    delete root;
+    assert_encrypted_packet(json, packet);
 }
 
 // Test empty encrypted packet
 void test_empty_encrypted_packet()
 {
-    const char *data = "";
-
-    meshtastic_MeshPacket packet = create_test_encrypted_packet(from, to, id, data);
+    meshtastic_MeshPacket packet =
+        create_test_packet(meshtastic_PortNum_TEXT_MESSAGE_APP, nullptr, 0, meshtastic_MeshPacket_encrypted_tag);
     std::string json = MeshPacketSerializer::JsonSerializeEncrypted(&packet);
 
     assert_encrypted_packet(json, packet);
diff --git a/test/test_meshpacket_serializer/test_serializer.cpp b/test/test_meshpacket_serializer/test_serializer.cpp
index d74031fa4..484db8d74 100644
--- a/test/test_meshpacket_serializer/test_serializer.cpp
+++ b/test/test_meshpacket_serializer/test_serializer.cpp
@@ -4,6 +4,10 @@
 
 // Forward declarations for test functions
 void test_text_message_serialization();
+void test_text_message_serialization_null();
+void test_text_message_serialization_long_text();
+void test_text_message_serialization_oversized();
+void test_text_message_serialization_invalid_utf8();
 void test_position_serialization();
 void test_nodeinfo_serialization();
 void test_waypoint_serialization();
@@ -14,6 +18,7 @@ void test_telemetry_environment_metrics_missing_fields();
 void test_telemetry_environment_metrics_complete_coverage();
 void test_telemetry_environment_metrics_unset_fields();
 void test_encrypted_packet_serialization();
+void test_empty_encrypted_packet();
 
 void setup()
 {
@@ -21,6 +26,10 @@ void setup()
 
     // Text message tests
     RUN_TEST(test_text_message_serialization);
+    RUN_TEST(test_text_message_serialization_null);
+    RUN_TEST(test_text_message_serialization_long_text);
+    RUN_TEST(test_text_message_serialization_oversized);
+    RUN_TEST(test_text_message_serialization_invalid_utf8);
 
     // Position tests
     RUN_TEST(test_position_serialization);
@@ -41,6 +50,7 @@ void setup()
 
     // Encrypted packet test
     RUN_TEST(test_encrypted_packet_serialization);
+    RUN_TEST(test_empty_encrypted_packet);
 
     UNITY_END();
 }