Bug #48863 mysql test: enable and disable case insensitive compare mode

Implemented --lowercase_result which lower cases next result

client/mysqltest.cc

@@ -97,7 +97,7 @@ static my_bool sp_protocol= 0, sp_protocol_enabled= 0;
 static my_bool view_protocol= 0, view_protocol_enabled= 0;
 static my_bool cursor_protocol= 0, cursor_protocol_enabled= 0;
 static my_bool parsing_disabled= 0;
-static my_bool display_result_vertically= FALSE,
+static my_bool display_result_vertically= FALSE, display_result_lower= FALSE,
   display_metadata= FALSE, display_result_sorted= FALSE;
 static my_bool disable_query_log= 0, disable_result_log= 0;
 static my_bool disable_warnings= 0;
@@ -272,6 +272,7 @@ enum enum_commands {
   Q_DISABLE_ABORT_ON_ERROR, Q_ENABLE_ABORT_ON_ERROR,
   Q_DISPLAY_VERTICAL_RESULTS, Q_DISPLAY_HORIZONTAL_RESULTS,
   Q_QUERY_VERTICAL, Q_QUERY_HORIZONTAL, Q_SORTED_RESULT,
+  Q_LOWERCASE,
   Q_START_TIMER, Q_END_TIMER,
   Q_CHARACTER_SET, Q_DISABLE_PS_PROTOCOL, Q_ENABLE_PS_PROTOCOL,
   Q_DISABLE_RECONNECT, Q_ENABLE_RECONNECT,
@@ -346,6 +347,7 @@ const char *command_names[]=
   "query_vertical",
   "query_horizontal",
   "sorted_result",
+  "lowercase_result",
   "start_timer",
   "end_timer",
   "character_set",
@@ -7876,6 +7878,13 @@ int main(int argc, char **argv)
         */
 	display_result_sorted= TRUE;
         break;
+      case Q_LOWERCASE:
+        /*
+          Turn on lowercasing of result, will be reset after next
+          command
+        */
+        display_result_lower= TRUE;
+        break;
       case Q_LET: do_let(command); break;
       case Q_EVAL_RESULT:
         die("'eval_result' command  is deprecated");
@@ -8091,8 +8100,9 @@ int main(int argc, char **argv)
       */
       free_all_replace();
 
-      /* Also reset "sorted_result" */
+      /* Also reset "sorted_result" and "lowercase"*/
       display_result_sorted= FALSE;
+      display_result_lower= FALSE;
     }
     last_command_executed= command_executed;
 
@@ -9496,6 +9506,18 @@ void replace_dynstr_append_mem(DYNAMIC_STRING *ds,
   fix_win_paths(val, len);
 #endif
 
+  if (display_result_lower) 
+  {
+    /* Convert to lower case, and do this first */
+    char lower[512];
+    char *c= lower;
+    for (const char *v= val;  *v;  v++)
+      *c++= my_tolower(charset_info, *v);
+    *c= '\0';
+    /* Copy from this buffer instead */
+    val= lower;
+  }
+  
   if (glob_replace_regex)
   {
     /* Regex replace */

mysql-test/r/mysqltest.result

@@ -682,6 +682,29 @@ INSERT INTO t1 SELECT f1 - 256 FROM t1;
 INSERT INTO t1 SELECT f1 - 512 FROM t1;
 SELECT * FROM t1;
 DROP TABLE t1;
+select "500g blåbærsyltetøy" as "will be lower cased";
+will be lower cased
+500g blåbærsyltetøy
+SELECT "UPPER" AS "WILL NOT BE lower cased";
+WILL NOT BE lower cased
+UPPER
+UP
+SELECT 0 as "UP AGAIN";
+UP AGAIN
+0
+select "abcdef" as "uvwxyz";
+uvwxyz
+abcdef
+select "xyz" as name union select "abc" as name order by name desc;
+name
+abc
+xyz
+select 1 as "some new text";
+some new text
+1
+select 0 as "will not lower case ÄËÐ";
+will not lower case ÄËÐ
+0
 CREATE TABLE t1(
 a int, b varchar(255), c datetime
 );

mysql-test/t/mysqltest.test

@@ -2059,6 +2059,44 @@ INSERT INTO t1 SELECT f1 - 512 FROM t1;
 SELECT * FROM t1;
 --enable_result_log
 DROP TABLE t1;
+
+# ----------------------------------------------------------------------------
+# test for lowercase_result
+# ----------------------------------------------------------------------------
+
+# 1. Basic test
+--lowercase_result
+SELECT "500g BLBRSYLTETY" AS "WILL BE lower cased";
+
+# 2. test that it does not apply to next statement
+SELECT "UPPER" AS "WILL NOT BE lower cased";
+
+# 3. test that it does not affect non-SQL or the following statement
+--lowercase_result
+--echo UP
+SELECT 0 as "UP AGAIN";
+
+# 4. test that it works with eval and variables
+let $lower_stmt=SELECT "ABCdef" AS "uvwXYZ";
+--lowercase_result
+eval $lower_stmt;
+
+# 5. test that it works in combination with sort
+sorted_result;
+lowercase_result;
+SELECT "Xyz" AS Name UNION SELECT "Abc" as Name ORDER BY Name DESC;
+
+# 6. Test combination with replace, and that lower casing is done first
+--lowercase_result
+--replace_result old new
+SELECT 1 as "SOME OLD TEXT";
+
+# 7. Test missing lower casing of "unknown" characters
+--character_set utf8
+--lowercase_result
+SELECT 0 as "WILL NOT lower case ";
+--character_set latin1
+
 # ----------------------------------------------------------------------------
 # Some coverage tests
 # ----------------------------------------------------------------------------