86 lines
2.7 KiB
Plaintext
86 lines
2.7 KiB
Plaintext
|
Git version interoperability tests
|
||
|
==================================
|
||
|
|
||
|
This directory has interoperability tests for git. Each script is
|
||
|
similar to the normal test scripts found in t/, but with the added twist
|
||
|
that two special versions of git, "git.a" and "git.b", are available in
|
||
|
the PATH. Individual tests can then check the interaction between the
|
||
|
two versions.
|
||
|
|
||
|
When you add a feature that handles backwards compatibility between git
|
||
|
versions, it's encouraged to add a test here to make sure it behaves as
|
||
|
you expect.
|
||
|
|
||
|
|
||
|
Running Tests
|
||
|
-------------
|
||
|
|
||
|
The easiest way to run tests is to say "make". This runs all
|
||
|
the tests against their default versions.
|
||
|
|
||
|
You can run a single test like:
|
||
|
|
||
|
$ ./i0000-basic.sh
|
||
|
ok 1 - bare git is forbidden
|
||
|
ok 2 - git.a version (v1.6.6.3)
|
||
|
ok 3 - git.b version (v2.11.1)
|
||
|
# passed all 3 test(s)
|
||
|
1..3
|
||
|
|
||
|
Each test contains default versions to run against. You may override
|
||
|
these by setting `GIT_TEST_VERSION_A` and `GIT_TEST_VERSION_B` in the
|
||
|
environment. Note that not all combinations will give sensible outcomes
|
||
|
for all tests (e.g., a test checking for a specific old/new interaction
|
||
|
may want something "old" enough" and something "new" enough; see
|
||
|
individual tests for details).
|
||
|
|
||
|
Version names should be resolvable as revisions in the current
|
||
|
repository. They will be exported and built as needed using the
|
||
|
config.mak files found at the root of your working tree.
|
||
|
|
||
|
The exception is the special version "." which uses the currently-built
|
||
|
contents of your working tree.
|
||
|
|
||
|
You can set the following variables (in the environment or in your config.mak):
|
||
|
|
||
|
GIT_INTEROP_MAKE_OPTS
|
||
|
Options to pass to `make` when building a git version (e.g.,
|
||
|
`-j8`).
|
||
|
|
||
|
You can also pass any command-line options taken by ordinary git tests (e.g.,
|
||
|
"-v").
|
||
|
|
||
|
|
||
|
Naming Tests
|
||
|
------------
|
||
|
|
||
|
The interop test files are named like:
|
||
|
|
||
|
iNNNN-short-description.sh
|
||
|
|
||
|
where N is a decimal digit. The same conventions for choosing NNNN as
|
||
|
for normal tests apply.
|
||
|
|
||
|
|
||
|
Writing Tests
|
||
|
-------------
|
||
|
|
||
|
An interop test script starts like a normal script, declaring a few
|
||
|
variables and then including interop-lib.sh (which includes test-lib.sh).
|
||
|
Besides test_description, you should also set the $VERSION_A and $VERSION_B
|
||
|
variables to give the default versions to test against. See t0000-basic.sh for
|
||
|
an example.
|
||
|
|
||
|
You can then use test_expect_success as usual, with a few differences:
|
||
|
|
||
|
1. The special commands "git.a" and "git.b" correspond to the
|
||
|
two versions.
|
||
|
|
||
|
2. You cannot call a bare "git". This is to prevent accidents where
|
||
|
you meant "git.a" or "git.b".
|
||
|
|
||
|
3. The trash directory is _not_ a git repository by default. You
|
||
|
should create one with the appropriate version of git.
|
||
|
|
||
|
At the end of the script, call test_done as usual.
|