diff --git a/tests/test_translate_format.sh b/tests/test_translate_format.sh
index 43b7ff4..55d8a8a 100755
--- a/tests/test_translate_format.sh
+++ b/tests/test_translate_format.sh
@@ -1,5 +1,34 @@
 #!/bin/sh
 
+# test_translate_format.sh
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Purpose
+#
+# Test translate_ciphers.py formatting by comparing the translated
+# ciphersuite names to the true names. As in compat.sh, the spaces between
+# the ciphersuite names are normalised.
+#
+# On fail, the translated cipher suite names do not match the correct ones.
+# In this case the difference will be printed in stdout.
+#
+# This files main purpose is to ensure translate_ciphers.py can take strings
+# in the expected format and return them in the format compat.sh will expect.
+
 # Ciphers that will use translate_ciphers.py
 M_CIPHERS=""
 O_CIPHERS=""
@@ -19,7 +48,7 @@
 
 M_CIPHERS="$M_CIPHERS                       \
            $CIPHERS"
-                
+
 G=`python3 translate_ciphers.py g "$CIPHERS"`
 G_CIPHERS="$G_CIPHERS                       \
            $G"
@@ -110,4 +139,4 @@
 then
     echo "OpenSSL Translated: $O_CIPHERS"
     echo "OpenSSL Original:   $Ot_CIPHERS"
-fi
\ No newline at end of file
+fi
diff --git a/tests/test_translate_names.py b/tests/test_translate_names.py
index 9de2830..d018c10 100755
--- a/tests/test_translate_names.py
+++ b/tests/test_translate_names.py
@@ -1,3 +1,28 @@
+#!/usr/bin/env python3
+
+# test_translate_names.py
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Purpose
+#
+# Test translate_ciphers.py by running every MBedTLS ciphersuite name
+# combination through the translate functions and comparing them to their
+# correct GNU or OpenSSL counterpart.
+
 from translate_ciphers import *
 
 def assert_equal(translate, original):
@@ -235,7 +260,6 @@
         o = translate_ossl(m_ciphers[i])
         assert_equal(o, o_ciphers[i])
 
-        
 def test_mbed_gnu_common():
     m_ciphers = [
         "TLS-ECDHE-ECDSA-WITH-CAMELLIA-128-CBC-SHA256",
@@ -420,7 +444,6 @@
 
         g = translate_gnu(m_ciphers[i])
         assert_equal(g, g_ciphers[i])
-        
 
 test_all_common()
 test_mbed_ossl_common()
diff --git a/tests/translate_ciphers.py b/tests/translate_ciphers.py
index b9a2d53..07affb2 100755
--- a/tests/translate_ciphers.py
+++ b/tests/translate_ciphers.py
@@ -1,3 +1,34 @@
+#!/usr/bin/env python3
+
+# translate_ciphers.py
+#
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Purpose
+#
+# Translate ciphersuite names in MBedTLS format to OpenSSL and GNU
+# standards.
+#
+# Format and analyse strings past in via input arguments to match
+# the expected strings utilised in compat.sh.
+#
+# sys.argv[1] should be "g" or "o" for GNU or OpenSSL.
+# sys.argv[2] should be a string containing one or more
+# ciphersuite names.
+
 import re
 import sys
 
@@ -91,8 +122,8 @@
     elif sys.argv[1] == "o":
         print(format_o(sys.argv[2]))
         exit(0)
-    else: 
+    else:
         exit(1)
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()