git/t/lib-httpd.sh, branch v2.20.2

Merge branch 'sg/httpd-test-unflake'

2018-08-02T22:30:39Z

httpd tests saw occasional breakage due to the way its access log gets inspected by the tests, which has been updated to make them less flaky. * sg/httpd-test-unflake: t/lib-httpd: avoid occasional failures when checking access.log t/lib-httpd: add the strip_access_log() helper function t5541: clean up truncating access log

t/lib-httpd: avoid occasional failures when checking access.log

2018-07-12T17:40:31Z

The last test of 't5561-http-backend.sh', 'server request log matches test results' may fail occasionally, because the order of entries in Apache's access log doesn't match the order of requests sent in the previous tests, although all the right requests are there. I saw it fail on Travis CI five times in the span of about half a year, when the order of two subsequent requests was flipped, and could trigger the failure with a modified Git. However, I was unable to trigger it with stock Git on my machine. Three tests in 't5541-http-push-smart.sh' and 't5551-http-fetch-smart.sh' check requests in the log the same way, so they might be prone to a similar occasional failure as well. When a test sends a HTTP request, it can continue execution after 'git-http-backend' fulfilled that request, but Apache writes the corresponding access log entry only after 'git-http-backend' exited. Some time inevitably passes between fulfilling the request and writing the log entry, and, under unfavourable circumstances, enough time might pass for the subsequent request to be sent and fulfilled by a different Apache thread or process, and then Apache writes access log entries racily. This effect can be exacerbated by adding a bit of variable delay after the request is fulfilled but before 'git-http-backend' exits, e.g. like this: diff --git a/http-backend.c b/http-backend.c index f3dc218b2..bbf4c125b 100644 --- a/http-backend.c +++ b/http-backend.c @@ -709,5 +709,7 @@ int cmd_main(int argc, const char **argv) max_request_buffer); cmd->imp(&hdr, cmd_arg); + if (getpid() % 2) + sleep(1); return 0; } This delay considerably increases the chances of log entries being written out of order, and in turn makes t5561's last test fail almost every time. Alas, it doesn't seem to be enough to trigger a similar failure in t5541 and t5551. So, since we can't just rely on the order of access log entries always corresponding the order of requests, make checking the access log more deterministic by sorting (simply lexicographically) both the stripped access log entries and the expected entries before the comparison with 'test_cmp'. This way the order of log entries won't matter and occasional out-of-order entries won't trigger a test failure, but the comparison will still notice any unexpected or missing log entries. OTOH, this sorting will make it harder to identify from which test an unexpected log entry came from or which test's request went missing. Therefore, in case of an error include the comparison of the unsorted log enries in the test output as well. And since all this should be performed in four tests in three test scripts, put this into a new helper function 'check_access_log' in 't/lib-httpd.sh'. Signed-off-by: SZEDER Gábor Signed-off-by: Junio C Hamano

t/lib-httpd: add the strip_access_log() helper function

2018-07-12T17:40:31Z

Four tests in three httpd-related test scripts check the contents of Apache's 'access.log', and they all do so by running 'sed' with the exact same script consisting of four s/// commands to strip uninteresting log fields and to vertically align the requested URLs. Extract this into a common helper function 'strip_access_log' in 'lib-httpd.sh', and use it in all of those tests. Signed-off-by: SZEDER Gábor Signed-off-by: Junio C Hamano

upload-pack: test negotiation with changing repository

2018-06-28T16:33:29Z

Add tests to check the behavior of fetching from a repository which changes between rounds of negotiation (for example, when different servers in a load-balancing agreement participate in the same stateless RPC negotiation). This forms a baseline of comparison to the ref-in-want functionality (which will be introduced to the client in subsequent commits), and ensures that subsequent commits do not change existing behavior. As part of this effort, a mechanism to substitute strings in a single HTTP response is added. Signed-off-by: Brandon Williams Signed-off-by: Junio C Hamano

Merge branch 'ew/git-svn-http-tests'

2016-08-08T21:48:34Z

Tests for "git svn" have been taught to reuse the lib-httpd test infrastructure when testing the subversion integration that interacts with subversion repositories served over the http:// protocol. * ew/git-svn-http-tests: git svn: migrate tests to use lib-httpd t/t91*: do not say how to avoid the tests

git svn: migrate tests to use lib-httpd

2016-07-25T17:42:34Z

This allows us to use common test infrastructure and parallelize the tests. For now, GIT_SVN_TEST_HTTPD=true needs to be set to enable the SVN HTTP tests because we reuse the same test cases for both file:// and http:// SVN repositories. SVN_HTTPD_PORT is no longer honored. Tested under Apache 2.2 and 2.4 on Debian 7.x (wheezy) and 8.x (jessie), respectively. Cc: Clemens Buchacher Cc: Michael J Gruber Signed-off-by: Eric Wong Signed-off-by: Junio C Hamano

lib-httpd.sh: print error.log on error

2016-06-13T18:50:44Z

Failure to bring up httpd for testing is not considered an error, so the trash directory, which contains this error.log file, is removed and we don't know what made httpd fail to start. Improve the situation a bit, print error.log but only in verbose mode. Signed-off-by: Nguyễn Thái Ngọc Duy Reviewed-by: Jeff King Signed-off-by: Junio C Hamano

t/lib-httpd.sh: use the $( ... ) construct for command substitution

2015-12-27T23:33:13Z

The Git CodingGuidelines prefer the $(...) construct for command substitution instead of using the backquotes `...`. The backquoted form is the traditional method for command substitution, and is supported by POSIX. However, all but the simplest uses become complicated quickly. In particular, embedded command substitutions and/or the use of double quotes require careful escaping with the backslash character. The patch was generated by: for _f in $(find . -name "*.sh") do perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}" done and then carefully proof-read. Signed-off-by: Elia Pinto Reviewed-by: Jonathan Nieder Signed-off-by: Junio C Hamano

Merge branch 'jk/skip-http-tests-under-no-curl'

2015-05-22T19:41:44Z

Test clean-up. * jk/skip-http-tests-under-no-curl: tests: skip dav http-push tests under NO_EXPAT=NoThanks t/lib-httpd.sh: skip tests if NO_CURL is defined

tests: skip dav http-push tests under NO_EXPAT=NoThanks

2015-05-07T16:48:43Z

When built with NO_EXPAT=NoThanks, we will not have a working http-push over webdav. Signed-off-by: Junio C Hamano