From 2fdd7f1170253984c1b065ac3a0fc43a31997c05 Mon Sep 17 00:00:00 2001
From: Chiranmoy Bhattacharya <chiranmoy.bhattacharya@fujitsu.com>
Date: Thu, 4 Sep 2025 15:44:19 +0530
Subject: [PATCH v6 3/3] Regression tests for SIMD hex coding

---
 src/test/regress/expected/hex_coding.out | 63 ++++++++++++++++++++++++
 src/test/regress/parallel_schedule       |  5 ++
 src/test/regress/sql/hex_coding.sql      | 39 +++++++++++++++
 3 files changed, 107 insertions(+)
 create mode 100644 src/test/regress/expected/hex_coding.out
 create mode 100644 src/test/regress/sql/hex_coding.sql

diff --git a/src/test/regress/expected/hex_coding.out b/src/test/regress/expected/hex_coding.out
new file mode 100644
index 00000000000..e6d78fa4876
--- /dev/null
+++ b/src/test/regress/expected/hex_coding.out
@@ -0,0 +1,63 @@
+--
+-- tests for hex_encode and hex_decode in encode.c
+--
+-- Build table for testing
+CREATE TABLE BYTEA_TABLE(data BYTEA);
+-- hex_decode is used for inserting into bytea column
+-- Set bytea_output to hex so that hex_encode is used and tested
+SET bytea_output = 'hex';
+INSERT INTO BYTEA_TABLE VALUES ('\xAB');
+INSERT INTO BYTEA_TABLE VALUES ('\x01ab');
+INSERT INTO BYTEA_TABLE VALUES ('\xDEADC0DE');
+INSERT INTO BYTEA_TABLE VALUES ('\xbaadf00d');
+INSERT INTO BYTEA_TABLE VALUES ('\x C001   c0ffee  '); -- hex string with whitespaces
+-- errors checking
+INSERT INTO BYTEA_TABLE VALUES ('\xbadf00d'); -- odd number of hex digits
+ERROR:  invalid hexadecimal data: odd number of digits
+LINE 1: INSERT INTO BYTEA_TABLE VALUES ('\xbadf00d');
+                                        ^
+INSERT INTO BYTEA_TABLE VALUES ('\xdeadcode'); -- invalid hexadecimal digit: "o"
+ERROR:  invalid hexadecimal digit: "o"
+LINE 1: INSERT INTO BYTEA_TABLE VALUES ('\xdeadcode');
+                                        ^
+INSERT INTO BYTEA_TABLE VALUES ('\xC00LC0FFEE'); -- invalid hexadecimal digit: "L"
+ERROR:  invalid hexadecimal digit: "L"
+LINE 1: INSERT INTO BYTEA_TABLE VALUES ('\xC00LC0FFEE');
+                                        ^
+INSERT INTO BYTEA_TABLE VALUES ('\xC00LC*DE'); -- invalid hexadecimal digit: "*"
+ERROR:  invalid hexadecimal digit: "L"
+LINE 1: INSERT INTO BYTEA_TABLE VALUES ('\xC00LC*DE');
+                                        ^
+INSERT INTO BYTEA_TABLE VALUES ('\xbad f00d'); -- invalid hexadecimal digit: " "
+ERROR:  invalid hexadecimal digit: " "
+LINE 1: INSERT INTO BYTEA_TABLE VALUES ('\xbad f00d');
+                                        ^
+-- long hex strings to test SIMD implementation
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8))::bytea;
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || repeat('baadf00d', 8))::bytea;
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || '   ' || repeat('baad f00d', 8))::bytea; -- hex string with whitespaces
+-- errors checking for SIMD implementation
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 4) || 'badf00d' || repeat('DEADC0DE', 4))::bytea; -- odd number of hex digits
+ERROR:  invalid hexadecimal data: odd number of digits
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 4) || 'baadfood'|| repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: "o"
+ERROR:  invalid hexadecimal digit: "o"
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 4) || 'C00LC0FFEE' || repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: "L"
+ERROR:  invalid hexadecimal digit: "L"
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || 'C00LC*DE' || repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: "*"
+ERROR:  invalid hexadecimal digit: "L"
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || 'bad f00d' || repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: " "
+ERROR:  invalid hexadecimal digit: " "
+SELECT encode(data, 'hex') FROM BYTEA_TABLE;
+                                                              encode                                                              
+----------------------------------------------------------------------------------------------------------------------------------
+ ab
+ 01ab
+ deadc0de
+ baadf00d
+ c001c0ffee
+ deadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0de
+ deadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0debaadf00dbaadf00dbaadf00dbaadf00dbaadf00dbaadf00dbaadf00dbaadf00d
+ deadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0dedeadc0debaadf00dbaadf00dbaadf00dbaadf00dbaadf00dbaadf00dbaadf00dbaadf00d
+(8 rows)
+
+DROP TABLE BYTEA_TABLE;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index fbffc67ae60..876a3988ed0 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -109,6 +109,11 @@ test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combo
 # ----------
 test: json jsonb json_encoding jsonpath jsonpath_encoding jsonb_jsonpath sqljson sqljson_queryfuncs sqljson_jsontable
 
+# ----------
+# Another group of parallel tests for hex encode/decode
+# ----------
+test: hex_coding
+
 # ----------
 # Another group of parallel tests
 # with depends on create_misc
diff --git a/src/test/regress/sql/hex_coding.sql b/src/test/regress/sql/hex_coding.sql
new file mode 100644
index 00000000000..97c51b62e90
--- /dev/null
+++ b/src/test/regress/sql/hex_coding.sql
@@ -0,0 +1,39 @@
+--
+-- tests for hex_encode and hex_decode in encode.c
+--
+
+-- Build table for testing
+CREATE TABLE BYTEA_TABLE(data BYTEA);
+
+-- hex_decode is used for inserting into bytea column
+-- Set bytea_output to hex so that hex_encode is used and tested
+SET bytea_output = 'hex';
+
+INSERT INTO BYTEA_TABLE VALUES ('\xAB');
+INSERT INTO BYTEA_TABLE VALUES ('\x01ab');
+INSERT INTO BYTEA_TABLE VALUES ('\xDEADC0DE');
+INSERT INTO BYTEA_TABLE VALUES ('\xbaadf00d');
+INSERT INTO BYTEA_TABLE VALUES ('\x C001   c0ffee  '); -- hex string with whitespaces
+
+-- errors checking
+INSERT INTO BYTEA_TABLE VALUES ('\xbadf00d'); -- odd number of hex digits
+INSERT INTO BYTEA_TABLE VALUES ('\xdeadcode'); -- invalid hexadecimal digit: "o"
+INSERT INTO BYTEA_TABLE VALUES ('\xC00LC0FFEE'); -- invalid hexadecimal digit: "L"
+INSERT INTO BYTEA_TABLE VALUES ('\xC00LC*DE'); -- invalid hexadecimal digit: "*"
+INSERT INTO BYTEA_TABLE VALUES ('\xbad f00d'); -- invalid hexadecimal digit: " "
+
+-- long hex strings to test SIMD implementation
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8))::bytea;
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || repeat('baadf00d', 8))::bytea;
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || '   ' || repeat('baad f00d', 8))::bytea; -- hex string with whitespaces
+
+-- errors checking for SIMD implementation
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 4) || 'badf00d' || repeat('DEADC0DE', 4))::bytea; -- odd number of hex digits
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 4) || 'baadfood'|| repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: "o"
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 4) || 'C00LC0FFEE' || repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: "L"
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || 'C00LC*DE' || repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: "*"
+INSERT INTO BYTEA_TABLE SELECT ('\x' || repeat('DEADC0DE', 8) || 'bad f00d' || repeat('DEADC0DE', 4))::bytea; -- invalid hexadecimal digit: " "
+
+SELECT encode(data, 'hex') FROM BYTEA_TABLE;
+
+DROP TABLE BYTEA_TABLE;
-- 
2.34.1

