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tg is a program that helps testing software. If you want to test a piece of software, that normally means you have to execute it over and over again, passing various sets of input data to it, and verifying that it gives the correct results for each input. You normally write a program that does all this automatically. Such a program is called a "test driver".

tg can generate such test driver programs, given a very succinct description of the individual test cases. tg translates this description into a complete Ada program. If you compile this test driver, link it with the software you want to test, and execute it, it performs all the test cases and tells you whether the software under test behaved as expected or not.

tg is written in Ada 95 and compiles out-of-the-box with GNAT, the GNU Ada 95 compiler. Documentation is provided as a GNU texinfo manual, and in postscript form. tg is free software, released under the FSF's General Public License (GPL).

• The full documentation of tg is online. Have a look at it to see how tg works, and what it can do.
• Click here to download tg version 3.1.
• People from the MODULA-2 community have found tg interesting as well. Tom Breeden wrote tgM2, which is a full re-implementation of tg in MODULA-2, generating MODULA-2 driver programs. There is another version by Ralf Reissing that also generates MODULA-2 code, but is itself written in Ada.

tg was written by André Spiegel, Berlin, Germany.