The main source of information is the DejaGnu user guide by Rob Savoye [3]. The most useful section is the Unit Testing API, which lists all the procedures. Follow these instructions as closely a possible in order get a good insight into how DejaGnu works, else you might run into a lot of subtle problems. You have. DejaGnu uses the GNU autoconf to configure itself. For more info on using autoconf, read the GNU autoconf manual. To configure, execute the configure.

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It runs a series of tests written in expect and reports the results of those tests. Triggered by calling the unresolved procedure. See section Using runtestfor a more detailed explanation of each runtest option. In general it is used to set variables specific to the tool or tools being tested.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided also that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. The historical naming of some of these files can mnaual confusing. For example for tests which cannot run on a particular target board. The following line will ensure that short names are used for test names. Thus for the tool or1ksimthe tests might appear in directories named or1ksim.

Both of these could be merged into DejaGnu in a way that permits testing programs that run in each environment. An Embeddable Command Language. By convention, the test framework lives within a directory testsuite. Setting up DejaGnu for the first time is a challenge. It takes a series of pairs of patterns and actions and waits until one of the patterns matches the output of a spawned process see spawn belowor a specified time period has passed or an end of file has been seen.


So for example the following would match the string “-gl”. Although these configuration files are all optional, runtest may complain if it can’t find them.

Indicates that a test which was expected to fail has passed.

Each DejaGnu test is a sequence of expect commands. The expect command is not line oriented. FAIL Indicates that a test has failed. If multiple board configuration files are found in the different directories, they will all be used in the order they are found.

However dsjagnu default it will use the full file name, which can make for hard to read listings. The copyright and license notices on this page only apply to the text on this page. An example test 3. This is the most important of the commands. The most useful are:.

Test output goes into two files in your current directory: Embecosm publishes a series of free and open source application notes, designed to help working engineers with practical problems. Using DejaGnu for Testing.

Expect scripts spawn test programs, to which they supply input and check that the response is as expected. This is a GNU package: It will need some additional changes to tell it about DejaGnu.


This is useful, because in the local configuration file, the dejangu is specified with its relative name for example.

DejaGnu Testing Framework – What is DejaGnu?

For example, if a standard says “The sun shall shine”, a corresponding assertion might be “The sun is shining. This application note is intended for software engineers putting together their first test suite using DejaGnu. A typical test framework directory structure 2. These files are named toolname.

See section Defaults for runtest options. The timeout value may be also set for the current expect command by using the -timeout flag as a pattern see below. So we should check for warnings or errors before cejagnu test for successful completion.

Four messages are supported for a required feature of POSIX xejagnu systems, and a fifth for a conditional feature. It is possible that patterns might match flags to the expect command, in which case they can be protected by using the -gl flag.

runtest(1) – Linux man page

For example, the Makefile. The most useful section is the Unit Testing APIwhich lists all the procedures which can be used when writing tests. Indicates that a test has failed.

Use t seconds as the drjagnu for the current expect command. By convention the tests are all run from a directory named testsuitebut this need not be the case.