diff --git a/tests/dat/actions/unicode.tests/go-1.11.txt b/tests/dat/actions/unicode.tests/go-1.13.txt
similarity index 100%
rename from tests/dat/actions/unicode.tests/go-1.11.txt
rename to tests/dat/actions/unicode.tests/go-1.13.txt
diff --git a/tests/dat/actions/unicode.tests/python-2.txt b/tests/dat/actions/unicode.tests/go-1.15.txt
similarity index 75%
rename from tests/dat/actions/unicode.tests/python-2.txt
rename to tests/dat/actions/unicode.tests/go-1.15.txt
index 8ef252f4fbe..0419947fe4e 100644
--- a/tests/dat/actions/unicode.tests/python-2.txt
+++ b/tests/dat/actions/unicode.tests/go-1.15.txt
@@ -1,4 +1,3 @@
-"""Python 2 Unicode test.
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -15,10 +14,16 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-"""
 
-def main(args):
-    sep = args['delimiter']
-    str = sep + " ☃ ".decode('utf-8') + sep
-    print(str.encode('utf-8'))
-    return {"winter": str}
+package main
+
+import "fmt"
+
+func Main(args map[string]interface{}) map[string]interface{} {
+	delimiter := args["delimiter"].(string)
+	str := delimiter + " ☃ " + delimiter
+    fmt.Println(str)
+	res := make(map[string]interface{})
+	res["winter"] = str
+	return res
+}
diff --git a/tests/dat/actions/unicode.tests/python.txt b/tests/dat/actions/unicode.tests/python.txt
index 8ef252f4fbe..d416171e223 100644
--- a/tests/dat/actions/unicode.tests/python.txt
+++ b/tests/dat/actions/unicode.tests/python.txt
@@ -1,4 +1,4 @@
-"""Python 2 Unicode test.
+"""Python 3 Unicode test.
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -19,6 +19,6 @@
 
 def main(args):
     sep = args['delimiter']
-    str = sep + " ☃ ".decode('utf-8') + sep
-    print(str.encode('utf-8'))
+    str = sep + " ☃ " + sep
+    print(str)
     return {"winter": str}
diff --git a/tests/dat/actions/unicode.tests/nodejs-6.txt b/tests/dat/actions/unicode.tests/swift-5.1.txt
similarity index 76%
rename from tests/dat/actions/unicode.tests/nodejs-6.txt
rename to tests/dat/actions/unicode.tests/swift-5.1.txt
index a14319c9f07..aff9c50a2dd 100644
--- a/tests/dat/actions/unicode.tests/nodejs-6.txt
+++ b/tests/dat/actions/unicode.tests/swift-5.1.txt
@@ -15,8 +15,12 @@
  * limitations under the License.
  */
 
-function main(args) {
-    var str = args.delimiter + " ☃ " + args.delimiter;
-    console.log(str);
-    return { "winter": str };
+func main(args: [String:Any]) -> [String:Any] {
+    if let str = args["delimiter"] as? String {
+        let msg = "\(str) ☃ \(str)"
+        print(msg)
+        return [ "winter" : msg ]
+    } else {
+        return [ "error" : "no delimiter" ]
+    }
 }
diff --git a/tests/dat/actions/unicode.tests/nodejs-8.txt b/tests/dat/actions/unicode.tests/swift-5.3.txt
similarity index 76%
rename from tests/dat/actions/unicode.tests/nodejs-8.txt
rename to tests/dat/actions/unicode.tests/swift-5.3.txt
index a14319c9f07..aff9c50a2dd 100644
--- a/tests/dat/actions/unicode.tests/nodejs-8.txt
+++ b/tests/dat/actions/unicode.tests/swift-5.3.txt
@@ -15,8 +15,12 @@
  * limitations under the License.
  */
 
-function main(args) {
-    var str = args.delimiter + " ☃ " + args.delimiter;
-    console.log(str);
-    return { "winter": str };
+func main(args: [String:Any]) -> [String:Any] {
+    if let str = args["delimiter"] as? String {
+        let msg = "\(str) ☃ \(str)"
+        print(msg)
+        return [ "winter" : msg ]
+    } else {
+        return [ "error" : "no delimiter" ]
+    }
 }