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TET (Test Environment Toolkit)

(TET) Test Environment Toolkit  is provided as an open source, is a multi - platform uniform test scaffold, unsupported command-line product, into which non-distributed and distributed test suites can be incorporated . It is widely used in many test applications including The Open Group's UNIX Certification program and the Free Standards Group's LSB Certification program.TET supports tests written in C, C++, Perl, Tcl, Shell (sh, bash, and POSIX shell), Python, Ruby, and Korn Shell.
The Test Environment Toolkit project started in September 1989, as the Open Software Foundation and UNIX International , X/Open entered in an announced agreement to produce a specifications for a testing environment. The three organizations agreed to develop and make freely available an implementation written to that specification they committed to producing test plans ,test cases.and test suites for execution within that environment.
The extensions that made to the Test Environment Toolkit by X/Open was the (DTET) Distributed Test Environment Toolkit project which started in October 1991. The objectives of this project was the functionality of the TET to support the execution of distributed test cases and be backwards compatible with the Test Environment Toolkit. The DTET defined a distributed test case as a test case executing partly on a master system and partly on one or more slave systems. In such a test case, synchronization between the test case controlling software on the multiple systems was required.