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#!/bin/sh
test_description='git rev-list trivial path optimization test'
. ./test-lib.sh
test_expect_success setup '
echo Hello > a &&
git add a &&
git commit -m "Initial commit" a &&
initial=$(git rev-parse --verify HEAD)
'
test_expect_success path-optimization '
commit=$(echo "Unchanged tree" | git commit-tree "HEAD^{tree}" -p HEAD) &&
test $(git rev-list $commit | wc -l) = 2 &&
test $(git rev-list $commit -- . | wc -l) = 1
'
test_expect_success 'further setup' '
git checkout -b side &&
echo Irrelevant >c &&
git add c &&
git commit -m "Side makes an irrelevant commit" &&
echo "More Irrelevancy" >c &&
git add c &&
git commit -m "Side makes another irrelevant commit" &&
echo Bye >a &&
git add a &&
git commit -m "Side touches a" &&
side=$(git rev-parse --verify HEAD) &&
echo "Yet more Irrelevancy" >c &&
git add c &&
git commit -m "Side makes yet another irrelevant commit" &&
git checkout master &&
echo Another >b &&
git add b &&
git commit -m "Master touches b" &&
git merge side &&
echo Touched >b &&
git add b &&
git commit -m "Master touches b again"
'
test_expect_success 'path optimization 2' '
( echo "$side"; echo "$initial" ) >expected &&
git rev-list HEAD -- a >actual &&
diff -u expected actual
'
test_done
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