charset tests run on different versions of mysql

test/tap/run.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 TAP_HOST="${TAP_HOST:=127.0.0.1}"
-TAP_PORT="${TAP_PORT:=3306}"
+TAP_PORT="${TAP_PORT:=6033}"
 TAP_USERNAME="${TAP_USERNAME:=root}"
 TAP_PASSWORD="${TAP_PASSWORD:=a}"
 

test/tap/tests/charset_unsigned_int-t.cpp

@@ -96,7 +96,13 @@ int main(int argc, char** argv) {
 
 	if (mysql_query(mysql, "set names utf8mb4 collate utf8mb4_croatian_ci")) return exit_status();
 	show_variable(mysql, var_collation_connection, var_value);
-	ok(var_value.compare("utf8mb4_croatian_ci") == 0, "Collation >255 is set");
+	std::string version;
+	get_server_version(mysql, version);
+	if (version[0] == '5') {
+		ok(var_value.compare("utf8mb4_general_ci") == 0, "Backend is mysql version < 8.0. Collation is reduced to utf8mb4_general_ci as expected");
+	} else {
+		ok(var_value.compare("utf8mb4_croatian_ci") == 0, "Backend is mysql version >= 8.0. Collation is set as expected to utf8mb4_croatian_ci");
+	}
 
 	mysql_close(mysql);
 
@@ -126,7 +132,6 @@ int main(int argc, char** argv) {
 	if (!mysql_b) return exit_status();
 	if (!mysql_real_connect(mysql_b, cl.host, cl.username, cl.password, NULL, cl.port, NULL, 0)) return exit_status();
 
-	std::string version;
 	get_server_version(mysql_b, version);
 	if (version[0] == '5') {
 		show_variable(mysql_b, var_collation_connection, var_value);