From 26146980f1298e468a49af4aa5b2f1cc5dc8857b Mon Sep 17 00:00:00 2001 From: Jeff King Date: Fri, 10 Sep 2021 10:04:42 -0400 Subject: t5551: test v2-to-v0 http protocol fallback Since we use the v2 protocol by default, the connection of a v2 client to a v2 server is well covered by the test suite. And with the GIT_TEST_PROTOCOL_VERSION knob, we can easily test a v0 client connecting to a v2-aware server (which will then just speak v0). But we have no regular tests that a v2 client, when encountering a non-v2-aware server, will correctly fall back to using v0. In theory this is a job for the cross-version tests in t/interop, but: - they cover only git:// and file:// clones - they are not part of the usual test suite, so nobody ever runs them anyway Since using v2 over http requires configuring the web server to pass along the Git-Protocol header, we can easily create a situation where the server does not respect the v2 probe, and the conversation falls back to v0. This works just fine. This new test is not about fixing any particular bug, but just making sure that the system works (and continues to work) as expected. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- t/lib-httpd/apache.conf | 5 +++++ t/t5551-http-fetch-smart.sh | 9 +++++++++ 2 files changed, 14 insertions(+) diff --git a/t/lib-httpd/apache.conf b/t/lib-httpd/apache.conf index afa91e38b0..1321357d8b 100644 --- a/t/lib-httpd/apache.conf +++ b/t/lib-httpd/apache.conf @@ -117,6 +117,11 @@ Alias /auth/dumb/ www/auth/dumb/ SetEnv GIT_EXEC_PATH ${GIT_EXEC_PATH} SetEnv GIT_HTTP_EXPORT_ALL + + SetEnv GIT_EXEC_PATH ${GIT_EXEC_PATH} + SetEnv GIT_HTTP_EXPORT_ALL + SetEnv GIT_PROTOCOL + ScriptAlias /smart/incomplete_length/git-upload-pack incomplete-length-upload-pack-v2-http.sh/ ScriptAlias /smart/incomplete_body/git-upload-pack incomplete-body-upload-pack-v2-http.sh/ ScriptAliasMatch /error_git_upload_pack/(.*)/git-upload-pack error.sh/ diff --git a/t/t5551-http-fetch-smart.sh b/t/t5551-http-fetch-smart.sh index 4f87d90c5b..cffc47a8e3 100755 --- a/t/t5551-http-fetch-smart.sh +++ b/t/t5551-http-fetch-smart.sh @@ -558,4 +558,13 @@ test_expect_success 'http auth forgets bogus credentials' ' expect_askpass both user@host ' +test_expect_success 'client falls back from v2 to v0 to match server' ' + GIT_TRACE_PACKET=$PWD/trace \ + GIT_TEST_PROTOCOL_VERSION=2 \ + git clone $HTTPD_URL/smart_v0/repo.git repo-v0 && + # check for v0; there the HEAD symref is communicated in the capability + # line; v2 uses a different syntax on each ref advertisement line + grep symref=HEAD:refs/heads/ trace +' + test_done -- cgit v1.2.3