mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-13 09:32:47 +00:00
165 lines
6.3 KiB
Plaintext
165 lines
6.3 KiB
Plaintext
Copyright (C) 2008-2023 Free Software Foundation, Inc.
|
||
See the end of the file for license conditions.
|
||
|
||
This directory contains files intended to test various aspects of
|
||
Emacs's functionality. Please help add tests!
|
||
|
||
See the file file-organization.org for the details of the directory
|
||
structure and file-naming conventions.
|
||
|
||
For tests in the manual/ subdirectory, look there for separate README
|
||
files, or look for instructions in the test files themselves.
|
||
|
||
Emacs uses ERT, Emacs Lisp Regression Testing, for testing. See (info
|
||
"(ert)") or https://www.gnu.org/software/emacs/manual/html_node/ert/
|
||
for more information on writing and running tests.
|
||
|
||
Tests could be tagged by the developer. In this test directory, the
|
||
following tags are recognized:
|
||
|
||
* :expensive-test
|
||
The test needs a serious amount of time to run. It is not intended
|
||
to run on a regular basis by users. Instead, it runs on demand
|
||
only, or during regression tests.
|
||
|
||
* :nativecomp
|
||
The test runs only if Emacs is configured with Lisp native compiler
|
||
support.
|
||
|
||
* :unstable
|
||
The test is under development. It shall run on demand only.
|
||
|
||
The Makefile sets the environment variable $EMACS_TEST_DIRECTORY,
|
||
which points to this directory. This environment variable does not
|
||
exist when the tests are run outside make. The Makefile supports the
|
||
following targets:
|
||
|
||
* make check
|
||
Run all tests as defined in the directory. Expensive and unstable
|
||
tests are suppressed. The result of the tests for <filename>.el is
|
||
stored in <filename>.log.
|
||
|
||
* make check-maybe
|
||
Like "make check", but run only the tests for files which have
|
||
unresolved prerequisites.
|
||
|
||
* make check-expensive
|
||
Like "make check", but run also the tests marked as expensive.
|
||
|
||
* make check-all
|
||
Like "make check", but run all tests.
|
||
|
||
* make check-<dirname>
|
||
Like "make check", but run only the tests in test/<dirname>/*.el.
|
||
<dirname> is a relative directory path, which has replaced "/" by "-",
|
||
like in "check-src" or "check-lisp-net".
|
||
|
||
* make <filename> -or- make <filename>.log
|
||
Run all tests declared in <filename>.el. This includes expensive
|
||
tests. In the former case the output is shown on the terminal, in
|
||
the latter case the output is written to <filename>.log.
|
||
|
||
<filename> could be either a relative file name like
|
||
"lisp/files-tests", or a package name like "files-tests".
|
||
|
||
ERT offers selectors, which make it possible to filter out which test
|
||
cases shall run. The make variable $(SELECTOR) gives you a simple
|
||
mean to use your own selectors. The ERT manual describes how
|
||
selectors are constructed, see (info "(ert)Test Selectors") or
|
||
https://www.gnu.org/software/emacs/manual/html_node/ert/Test-Selectors.html
|
||
|
||
You could use predefined selectors of the Makefile. "make <filename>
|
||
SELECTOR='$(SELECTOR_DEFAULT)'" runs all tests for <filename>.el
|
||
except the tests tagged as expensive or unstable. Other predefined
|
||
selectors are $(SELECTOR_EXPENSIVE) (run all tests except unstable
|
||
ones) and $(SELECTOR_ALL) (run all tests).
|
||
|
||
If your test file contains the tests "test-foo", "test2-foo" and
|
||
"test-foo-remote", and you want to run only the former two tests, you
|
||
could use a selector regexp (note that the "$" needs to be doubled to
|
||
protect against "make" variable expansion):
|
||
|
||
make <filename> SELECTOR='"foo$$"'
|
||
|
||
In case you want to use the symbol name of a test as selector, you can
|
||
use it directly:
|
||
|
||
make <filename> SELECTOR='test-foo-remote'
|
||
|
||
Note that although the test files are always compiled (unless they set
|
||
no-byte-compile), the source files will be run when expensive or
|
||
unstable tests are involved, to give nicer backtraces. To run the
|
||
compiled version of a test use
|
||
|
||
make TEST_LOAD_EL=no ...
|
||
|
||
Some tests might take long time to run. In order to summarize the
|
||
<nn> tests with the longest duration, call
|
||
|
||
make SUMMARIZE_TESTS=<nn> ...
|
||
|
||
The backtrace of failing tests are truncated to the default value of
|
||
'ert-batch-backtrace-right-margin'. To see more of the backtrace, use
|
||
|
||
make TEST_BACKTRACE_LINE_LENGTH=<nn> ...
|
||
|
||
The tests are run in batch mode by default; sometimes it's useful to
|
||
get precisely the same environment but run in interactive mode for
|
||
debugging. To do that, use
|
||
|
||
make TEST_INTERACTIVE=yes ...
|
||
|
||
By default, ERT test failure summaries are quite brief in batch
|
||
mode--only the names of the failed tests are listed. If the
|
||
$EMACS_TEST_VERBOSE environment variable is set and non-empty, the
|
||
failure summaries will also include the data from the failing test.
|
||
|
||
If the $EMACS_TEST_JUNIT_REPORT environment variable is set to a file
|
||
name, a JUnit test report is generated under this name.
|
||
|
||
Some of the tests require a remote temporary directory
|
||
(autorevert-tests.el, dnd-tests.el, eglot-tests.el, filenotify-tests.el,
|
||
shadowfile-tests.el and tramp-tests.el). Per default, a mock-up
|
||
connection method is used (this might not be possible when running on
|
||
MS Windows). If you want to test a real remote connection, set
|
||
$REMOTE_TEMPORARY_FILE_DIRECTORY to a suitable value in order to
|
||
overwrite the default value:
|
||
|
||
env REMOTE_TEMPORARY_FILE_DIRECTORY=/ssh:host:/tmp make ...
|
||
|
||
|
||
There are also continuous integration tests on
|
||
<https://hydra.nixos.org/jobset/gnu/emacs-trunk> (see
|
||
admin/notes/hydra) and <https://emba.gnu.org/emacs/emacs> (see
|
||
admin/notes/emba). Both environments provide an environment variable,
|
||
which could be used to determine, whether the tests run in one of
|
||
these test environments.
|
||
|
||
$EMACS_HYDRA_CI indicates the hydra environment, and $EMACS_EMBA_CI
|
||
indicates the emba environment, respectively.
|
||
|
||
If tests on these premises take too long, and it is needed to create a
|
||
core dump for further analysis, the environment variable
|
||
$EMACS_TEST_TIMEOUT could set a limit (in seconds) when this shall
|
||
happen.
|
||
|
||
|
||
(Also, see etc/compilation.txt for compilation mode font lock tests
|
||
and etc/grep.txt for grep mode font lock tests.)
|
||
|
||
|
||
This file is part of GNU Emacs.
|
||
|
||
GNU Emacs is free software: you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation, either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
GNU Emacs is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|