git/t/lib-httpd/apply-one-time-sed.sh
Brandon Williams 3374292e55 upload-pack: test negotiation with changing repository
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 <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-28 09:33:29 -07:00

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#!/bin/sh
# If "one-time-sed" exists in $HTTPD_ROOT_PATH, run sed on the HTTP response,
# using the contents of "one-time-sed" as the sed command to be run. If the
# response was modified as a result, delete "one-time-sed" so that subsequent
# HTTP responses are no longer modified.
#
# This can be used to simulate the effects of the repository changing in
# between HTTP request-response pairs.
if [ -e one-time-sed ]; then
"$GIT_EXEC_PATH/git-http-backend" >out
sed "$(cat one-time-sed)" <out >out_modified
if diff out out_modified >/dev/null; then
cat out
else
cat out_modified
rm one-time-sed
fi
else
"$GIT_EXEC_PATH/git-http-backend"
fi