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tests: add checking that combine-diff emits only correct paths

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where "correct paths" stands for paths that are different to all
parents.

Up until now, we were testing combined diff only on one file, or on
several files which were all different (t4038-diff-combined.sh).

As recent thinko in "simplify intersect_paths() further" showed, and
also, since we are going to rework code for finding paths different to
all parents, lets write at least basic tests.

Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Kirill Smelkov 2014-02-03 13:08:49 +04:00 committed by Junio C Hamano
parent 7b1004b0ba
commit fce135c4ff
1 changed files with 106 additions and 0 deletions
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106
t/t4057-diff-combined-paths.sh Executable file
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#!/bin/sh
test_description='combined diff show only paths that are different to all parents'
. ./test-lib.sh
# verify that diffc.expect matches output of
# `git diff -c --name-only HEAD HEAD^ HEAD^2`
diffc_verify () {
git diff -c --name-only HEAD HEAD^ HEAD^2 >diffc.actual &&
test_cmp diffc.expect diffc.actual
}
test_expect_success 'trivial merge - combine-diff empty' '
for i in $(test_seq 1 9)
do
echo $i >$i.txt &&
git add $i.txt
done &&
git commit -m "init" &&
git checkout -b side &&
for i in $(test_seq 2 9)
do
echo $i/2 >>$i.txt
done &&
git commit -a -m "side 2-9" &&
git checkout master &&
echo 1/2 >1.txt &&
git commit -a -m "master 1" &&
git merge side &&
>diffc.expect &&
diffc_verify
'
test_expect_success 'only one trully conflicting path' '
git checkout side &&
for i in $(test_seq 2 9)
do
echo $i/3 >>$i.txt
done &&
echo "4side" >>4.txt &&
git commit -a -m "side 2-9 +4" &&
git checkout master &&
for i in $(test_seq 1 9)
do
echo $i/3 >>$i.txt
done &&
echo "4master" >>4.txt &&
git commit -a -m "master 1-9 +4" &&
test_must_fail git merge side &&
cat <<-\EOF >4.txt &&
4
4/2
4/3
4master
4side
EOF
git add 4.txt &&
git commit -m "merge side (2)" &&
echo 4.txt >diffc.expect &&
diffc_verify
'
test_expect_success 'merge introduces new file' '
git checkout side &&
for i in $(test_seq 5 9)
do
echo $i/4 >>$i.txt
done &&
git commit -a -m "side 5-9" &&
git checkout master &&
for i in $(test_seq 1 3)
do
echo $i/4 >>$i.txt
done &&
git commit -a -m "master 1-3 +4hello" &&
git merge side &&
echo "Hello World" >4hello.txt &&
git add 4hello.txt &&
git commit --amend &&
echo 4hello.txt >diffc.expect &&
diffc_verify
'
test_expect_success 'merge removed a file' '
git checkout side &&
for i in $(test_seq 5 9)
do
echo $i/5 >>$i.txt
done &&
git commit -a -m "side 5-9" &&
git checkout master &&
for i in $(test_seq 1 3)
do
echo $i/4 >>$i.txt
done &&
git commit -a -m "master 1-3" &&
git merge side &&
git rm 4.txt &&
git commit --amend &&
echo 4.txt >diffc.expect &&
diffc_verify
'
test_done