ert: Running Tests in Batch Mode
2.2 Running Tests in Batch Mode
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ERT supports automated invocations from the command line or from scripts
or makefiles. There are two functions for this purpose,
‘ert-run-tests-batch’ and ‘ert-run-tests-batch-and-exit’. They can be
used like this:
emacs -batch -l ert -l my-tests.el -f ert-run-tests-batch-and-exit
This command will start up Emacs in batch mode, load ERT, load
‘my-tests.el’, and run all tests defined in it. It will exit with a
zero exit status if all tests passed, or nonzero if any tests failed or
if anything else went wrong. It will also print progress messages and
error diagnostics to standard output.
You can also redirect the above output to a log file, say
‘output.log’, and use the ‘ert-summarize-tests-batch-and-exit’ function
to produce a neat summary as shown below:
emacs -batch -l ert -f ert-summarize-tests-batch-and-exit output.log
If ERT is not part of your Emacs distribution, you may need to use
‘-L /path/to/ert/’ so that Emacs can find it. You may need additional
‘-L’ flags to ensure that ‘my-tests.el’ and all the files that it
requires are on your ‘load-path’.