git/t/t5536-fetch-conflicts.sh
Michael Haggerty f096e6e826 fetch: improve the error messages emitted for conflicting refspecs
If we find two refspecs that want to update the same local reference,
emit an error message that is more informative based on whether one of
the conflicting refspecs is an opportunistic update during a fetch
with explicit command-line refspecs.  And especially, do not die if an
opportunistic reference update conflicts with an express wish of the
user; rather, just emit a warning and skip the opportunistic reference
update.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-10-30 14:16:42 -07:00

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#!/bin/sh
test_description='fetch handles conflicting refspecs correctly'
. ./test-lib.sh
D=$(pwd)
setup_repository () {
git init "$1" && (
cd "$1" &&
git config remote.origin.url "$D" &&
shift &&
for refspec in "$@"
do
git config --add remote.origin.fetch "$refspec"
done
)
}
verify_stderr () {
cat >expected &&
# We're not interested in the error
# "fatal: The remote end hung up unexpectedly":
grep -E '^(fatal|warning):' <error | grep -v 'hung up' >actual | sort &&
test_cmp expected actual
}
test_expect_success 'setup' '
git commit --allow-empty -m "Initial" &&
git branch branch1 &&
git tag tag1 &&
git commit --allow-empty -m "First" &&
git branch branch2 &&
git tag tag2
'
test_expect_success 'fetch with no conflict' '
setup_repository ok "+refs/heads/*:refs/remotes/origin/*" && (
cd ok &&
git fetch origin
)
'
test_expect_success 'fetch conflict: config vs. config' '
setup_repository ccc \
"+refs/heads/branch1:refs/remotes/origin/branch1" \
"+refs/heads/branch2:refs/remotes/origin/branch1" && (
cd ccc &&
test_must_fail git fetch origin 2>error &&
verify_stderr <<-\EOF
fatal: Cannot fetch both refs/heads/branch1 and refs/heads/branch2 to refs/remotes/origin/branch1
EOF
)
'
test_expect_success 'fetch duplicate: config vs. config' '
setup_repository dcc \
"+refs/heads/*:refs/remotes/origin/*" \
"+refs/heads/branch1:refs/remotes/origin/branch1" && (
cd dcc &&
git fetch origin
)
'
test_expect_success 'fetch conflict: arg overrides config' '
setup_repository aoc \
"+refs/heads/*:refs/remotes/origin/*" && (
cd aoc &&
git fetch origin refs/heads/branch2:refs/remotes/origin/branch1
)
'
test_expect_success 'fetch conflict: arg vs. arg' '
setup_repository caa && (
cd caa &&
test_must_fail git fetch origin \
refs/heads/*:refs/remotes/origin/* \
refs/heads/branch2:refs/remotes/origin/branch1 2>error &&
verify_stderr <<-\EOF
fatal: Cannot fetch both refs/heads/branch1 and refs/heads/branch2 to refs/remotes/origin/branch1
EOF
)
'
test_expect_success 'fetch conflict: criss-cross args' '
setup_repository xaa \
"+refs/heads/*:refs/remotes/origin/*" && (
cd xaa &&
git fetch origin \
refs/heads/branch1:refs/remotes/origin/branch2 \
refs/heads/branch2:refs/remotes/origin/branch1 2>error &&
verify_stderr <<-\EOF
warning: refs/remotes/origin/branch1 usually tracks refs/heads/branch1, not refs/heads/branch2
warning: refs/remotes/origin/branch2 usually tracks refs/heads/branch2, not refs/heads/branch1
EOF
)
'
test_done