diff --git a/tests/operations/index.mjs b/tests/operations/index.mjs
index bf440414..3257905d 100644
--- a/tests/operations/index.mjs
+++ b/tests/operations/index.mjs
@@ -45,6 +45,7 @@ import "./tests/Gzip.mjs";
 import "./tests/Gunzip.mjs";
 import "./tests/Hash.mjs";
 import "./tests/HaversineDistance.mjs";
+import "./tests/Hex.mjs";
 import "./tests/Hexdump.mjs";
 import "./tests/Image.mjs";
 import "./tests/IndexOfCoincidence.mjs";
diff --git a/tests/operations/tests/Hex.mjs b/tests/operations/tests/Hex.mjs
new file mode 100644
index 00000000..9d55c411
--- /dev/null
+++ b/tests/operations/tests/Hex.mjs
@@ -0,0 +1,101 @@
+import TestRegister from "../../lib/TestRegister.mjs";
+
+TestRegister.addTests([
+    {
+        name: "ASCII to Hex stream",
+        input: "aberystwyth",
+        expectedOutput: "6162657279737477797468",
+        recipeConfig: [
+            {
+                "op": "To Hex",
+                "args": [
+                    "None",
+                    0,
+                    false
+                ]
+            },
+        ]
+    },
+    {
+        name: "ASCII to Hex with colon deliminator ",
+        input: "aberystwyth",
+        expectedOutput: "61:62:65:72:79:73:74:77:79:74:68",
+        recipeConfig: [
+            {
+                "op": "To Hex",
+                "args": [
+                    "Colon",
+                    0,
+                    false
+                ]
+            }
+        ]
+    },
+    {
+        name: "ASCII to 0x Hex with comma",
+        input: "aberystwyth",
+        expectedOutput: "0x61,0x62,0x65,0x72,0x79,0x73,0x74,0x77,0x79,0x74,0x68",
+        recipeConfig: [
+            {
+                "op": "To Hex",
+                "args": [
+                    "0x",
+                    0,
+                    true
+                ]
+            }
+        ]
+    },
+    {
+        name: "ASCII to 0x Hex with comma and line breaks",
+        input: "aberystwyth",
+        expectedOutput: "0x61,0x62,0x65,0x72,\n0x79,0x73,0x74,0x77,\n0x79,0x74,0x68",
+        recipeConfig: [
+            {
+                "op": "To Hex",
+                "args": [
+                    "0x",
+                    4,
+                    true
+                ]
+            }
+        ]
+    },
+    {
+        name: "Hex stream to UTF-8",
+        input: "e69591e69591e5ada9e5ad90",
+        expectedOutput: "救救孩子",
+        recipeConfig: [
+            {
+                "op": "From Hex",
+                "args": [
+                    "Auto"
+                ]
+            }
+        ]
+
+    },
+    {
+        name: "Multiline 0x hex to ASCII",
+        input: "0x49,0x20,0x73,0x61,0x77,0x20,0x6d,0x79,0x73,0x65,0x6c,0x66,0x20,0x73,0x69,\
+0x74,0x74,0x69,0x6e,0x67,0x20,0x69,0x6e,0x20,0x74,0x68,0x65,0x20,0x63,0x72,\
+0x6f,0x74,0x63,0x68,0x20,0x6f,0x66,0x20,0x74,0x68,0x65,0x20,0x74,0x68,0x69,\
+0x73,0x20,0x66,0x69,0x67,0x20,0x74,0x72,0x65,0x65,0x2c,0x20,0x73,0x74,0x61,\
+0x72,0x76,0x69,0x6e,0x67,0x20,0x74,0x6f,0x20,0x64,0x65,0x61,0x74,0x68,0x2c,\
+0x20,0x6a,0x75,0x73,0x74,0x20,0x62,0x65,0x63,0x61,0x75,0x73,0x65,0x20,0x49,\
+0x20,0x63,0x6f,0x75,0x6c,0x64,0x6e,0x27,0x74,0x20,0x6d,0x61,0x6b,0x65,0x20,\
+0x75,0x70,0x20,0x6d,0x79,0x20,0x6d,0x69,0x6e,0x64,0x20,0x77,0x68,0x69,0x63,\
+0x68,0x20,0x6f,0x66,0x20,0x74,0x68,0x65,0x20,0x66,0x69,0x67,0x73,0x20,0x49,\
+0x20,0x77,0x6f,0x75,0x6c,0x64,0x20,0x63,0x68,0x6f,0x6f,0x73,0x65,0x2e",
+        expectedOutput: "I saw myself sitting in the crotch of the this fig tree, starving to death, just because I couldn't make up my mind which of the figs I would choose.",
+        recipeConfig: [
+            {
+                "op": "From Hex",
+                "args": [
+                    "Auto"
+                ]
+            }
+        ]
+
+    }
+]);