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Documentation: bisect: add a few "git bisect run" examples

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Before this patch, there were no "git bisect run" example.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2008-05-08 01:00:54 +02:00 committed by Junio C Hamano
parent d84ae0dbd5
commit bac59f19b1
1 changed files with 49 additions and 0 deletions
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49
Documentation/git-bisect.txt
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@ -224,6 +224,55 @@ tree to the pristine state. Finally the "run" script can exit with
the status of the real test to let "git bisect run" command loop to
know the outcome.
EXAMPLES
--------
* Automatically bisect a broken build between v1.2 and HEAD:
+
------------
$ git bisect start HEAD v1.2 -- # HEAD is bad, v1.2 is good
$ git bisect run make # "make" builds the app
------------
* Automatically bisect a broken test suite:
+
------------
$ cat ~/test.sh
#!/bin/sh
make || exit 125 # this "skip"s broken builds
make test # "make test" runs the test suite
$ git bisect start v1.3 v1.1 -- # v1.3 is bad, v1.1 is good
$ git bisect run ~/test.sh
------------
+
Here we use a "test.sh" custom script. In this script, if "make"
fails, we "skip" the current commit.
+
It's safer to use a custom script outside the repo to prevent
interactions between the bisect, make and test processes and the
script.
+
And "make test" should "exit 0", if the test suite passes, and
"exit 1" (for example) otherwise.
* Automatically bisect a broken test case:
+
------------
$ cat ~/test.sh
#!/bin/sh
make || exit 125 # this "skip"s broken builds
~/check_test_case.sh # does the test case passes ?
$ git bisect start HEAD HEAD~10 -- # culprit is among the last 10
$ git bisect run ~/test.sh
------------
+
Here "check_test_case.sh" should "exit 0", if the test case passes,
and "exit 1" (for example) otherwise.
+
It's safer if both "test.sh" and "check_test_case.sh" scripts are
outside the repo to prevent interactions between the bisect, make and
test processes and the scripts.
Author
------
Written by Linus Torvalds <torvalds@osdl.org>