The mysqltest program runs a test case against a MySQL server and optionally compares the output with a result file. This program reads input written in a special test language. Typically, you invoke mysqltest using mysql-test-run.pl rather than invoking it directly.
mysqltest_embedded is similar but is built
with support for the
server. This program is available only prior to MySQL 8.0.
Features of mysqltest:
Can send SQL statements to MySQL servers for execution
Can execute external shell commands
Can test whether the result from an SQL statement or shell command is as expected
Can connect to one or more standalone mysqld servers and switch between connections
Can connect to an embedded server (
libmysqld), if MySQL is compiled with support for
libmysqld. (In this case, the executable is named mysqltest_embedded rather than mysqltest.)
You can also name the test case file with a
The exit value from mysqltest is 0 for success, 1 for failure, and 62 if it skips the test case (for example, if after checking some preconditions it decides not to run the test).
mysqltest supports the following options:
Display a help message and exit.
The base directory for tests.
The directory where character sets are installed.
Compress all information sent between the client and the server if both support compression.
Use cursors for prepared statements.
The default database to use.
Write a debugging log if MySQL is built with debugging support. The default
Print some debugging information when the program exits.
Print debugging information and memory and CPU usage statistics when the program exits.
EXPLAIN EXTENDEDon all SELECT, INSERT, REPLACE, UPDATE and DELETE queries.
Connect to the MySQL server on the given host.
Include the contents of the given file before processing the contents of the test file. The included file should have the same format as other mysqltest test files. This option has the same effect as putting a
--sourcecommand as the first line of the test file.
EXPLAIN FORMAT=JSONon all SELECT, INSERT, REPLACE, UPDATE and DELETE queries. The
json-explain-protocoloption is available from MySQL 5.6.
The directory to use for log files.
Write the line number and elapsed time to
The maximum number of connection attempts when connecting to server.
The maximum number of simultaneous server connections per client (that is, per test). If not set, the maximum is 128. Minimum allowed limit is 8, maximum is 5120.
Do not read default options from any option files. If used, this must be the first option.
The directory in which to look for plugins. It may be necessary to specify this option if the
default_authargument is used for the
connect()command to specify an authentication plugin but mysqltest does not find it. This option was added in MySQL 5.5.7.
The password to use when connecting to the server. If you use the short option form (
-p), you cannot have a space between the option and the password. If you omit the
passwordvalue following the
-poption on the command line, you are prompted for one.
The TCP/IP port number to use for the connection.
Choose the protocol for communication with the server.
--protocoloption is ignored if running with the embedded server.
Use the prepared-statement protocol for communication.
Record the output that results from running the test file into the file named by the
--result-fileoption, if that option is given. It is an error to use this option without also using
This option specifies the file for test case expected results.
--result-file, together with
--record, determines how mysqltest treats the test actual and expected results for a test case:
If the test produces no results, mysqltest exits with an error message to that effect, unless
--result-fileis given and the named file is an empty file.
--result-fileis not given, mysqltest sends test results to the standard output.
--record, mysqltest reads the expected results from the given file and compares them with the actual results. If the results do not match, mysqltest writes a
.rejectfile in the same directory as the result file, outputs a diff of the two files, and exits with an error.
--record, mysqltest updates the given file by writing the actual test results to it.
Pass the argument as an argument to the embedded server. For example,
--server-arg=--core. Up to 64 arguments can be given. This option was removed in MySQL 8.0.
Read arguments for the embedded server from the given file. The file should contain one argument per line. This option was removed in MySQL 8.0.
The path name to a file containing the server RSA public key. The file must be in PEM format. The public key is used for RSA encryption of the client password for connections to the server made using accounts that authenticate with the
sha256_passwordplugin. This option is ignored for client accounts that do not authenticate with that plugin. It is also ignored if password encryption is not needed, as is the case when the client connects to the server using an SSL connection.
The server sends the public key to the client as needed, so it is not necessary to use this option for RSA password encryption to occur. It is more efficient to do so because then the server need not send the key.
For additional discussion regarding use of the
sha256_passwordplugin, including how to get the RSA public key, see The SHA-256 Authentication Plugin.
This option is available only if MySQL was built using OpenSSL. It was added in MySQL 5.6.6 under the name
--server-public-keyand renamed in 5.6.7 to
Suppress all normal output.
Do not use memory allocation checking.
sleepcommands in the test case file to sleep
numseconds. This option does not affect
An option value of 0 can also be used, which effectively disables
sleepcommands in the test case.
The socket file to use when connecting to
localhost(which is the default host).
Execute DML statements within a stored procedure. For every DML statement, mysqltest creates and invokes a stored procedure that executes the statement rather than executing the statement directly.
Specify how many lines of the result to include in the output if the test fails because an SQL statement fails. The default is 0, meaning no lines of result printed.
Read test input from this file. The default is to read from the standard input.
If given, the number of millisecond spent running the test will be written to this file. This is used by mysql-test-run.pl for its reporting.
The protocols permitted by the client for encrypted connections. The value is a comma-separated list containing one or more of these protocols: TLSv1, TLSv1.1, TLSv1.2. (TLSv1.2 is supported only if MySQL was compiled using OpenSSL 1.0.1 or higher. It is not supported if MySQL was compiled using yaSSL.)
This option was added in MySQL 5.7.10.
The temporary directory where socket files are created.
If enabled, this option causes mysqltest to immediately display the output from executed programs to
This option was added in MySQL 8.0.0.
The MySQL user name to use when connecting to the server.
Verbose mode. Print out more information about what the program does.
Display version information and exit.
SELECTstatement is wrapped inside a view.