/
t4020-diff-external.sh
executable file
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/
t4020-diff-external.sh
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#!/bin/sh
test_description='external diff interface test'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success setup '
test_tick &&
echo initial >file &&
git add file &&
git commit -m initial &&
test_tick &&
echo second >file &&
before=$(git hash-object file) &&
before=$(git rev-parse --short $before) &&
git add file &&
git commit -m second &&
test_tick &&
echo third >file
'
test_expect_success 'GIT_EXTERNAL_DIFF environment' '
cat >expect <<-EOF &&
file $(git rev-parse --verify HEAD:file) 100644 file $(test_oid zero) 100644
EOF
GIT_EXTERNAL_DIFF=echo git diff >out &&
cut -d" " -f1,3- <out >actual &&
test_cmp expect actual
'
test_expect_success 'GIT_EXTERNAL_DIFF environment should apply only to diff' '
GIT_EXTERNAL_DIFF=echo git log -p -1 HEAD >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success 'GIT_EXTERNAL_DIFF environment and --no-ext-diff' '
GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success SYMLINKS 'typechange diff' '
rm -f file &&
ln -s elif file &&
cat >expect <<-EOF &&
file $(git rev-parse --verify HEAD:file) 100644 $(test_oid zero) 120000
EOF
GIT_EXTERNAL_DIFF=echo git diff >out &&
cut -d" " -f1,3-4,6- <out >actual &&
test_cmp expect actual &&
GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff >actual &&
git diff >expect &&
test_cmp expect actual
'
test_expect_success 'diff.external' '
git reset --hard &&
echo third >file &&
test_config diff.external echo &&
cat >expect <<-EOF &&
file $(git rev-parse --verify HEAD:file) 100644 $(test_oid zero) 100644
EOF
git diff >out &&
cut -d" " -f1,3-4,6- <out >actual &&
test_cmp expect actual
'
test_expect_success 'diff.external should apply only to diff' '
test_config diff.external echo &&
git log -p -1 HEAD >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success 'diff.external and --no-ext-diff' '
test_config diff.external echo &&
git diff --no-ext-diff >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success 'diff attribute' '
git reset --hard &&
echo third >file &&
git config diff.parrot.command echo &&
echo >.gitattributes "file diff=parrot" &&
cat >expect <<-EOF &&
file $(git rev-parse --verify HEAD:file) 100644 $(test_oid zero) 100644
EOF
git diff >out &&
cut -d" " -f1,3-4,6- <out >actual &&
test_cmp expect actual
'
test_expect_success !SANITIZE_LEAK 'diff attribute should apply only to diff' '
git log -p -1 HEAD >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success 'diff attribute and --no-ext-diff' '
git diff --no-ext-diff >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success 'diff attribute' '
git config --unset diff.parrot.command &&
git config diff.color.command echo &&
echo >.gitattributes "file diff=color" &&
cat >expect <<-EOF &&
file $(git rev-parse --verify HEAD:file) 100644 $(test_oid zero) 100644
EOF
git diff >out &&
cut -d" " -f1,3-4,6- <out >actual &&
test_cmp expect actual
'
test_expect_success !SANITIZE_LEAK 'diff attribute should apply only to diff' '
git log -p -1 HEAD >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success 'diff attribute and --no-ext-diff' '
git diff --no-ext-diff >out &&
grep "^diff --git a/file b/file" out
'
test_expect_success 'GIT_EXTERNAL_DIFF trumps diff.external' '
>.gitattributes &&
test_config diff.external "echo ext-global" &&
cat >expect <<-EOF &&
ext-env file $(git rev-parse --verify HEAD:file) 100644 file $(test_oid zero) 100644
EOF
GIT_EXTERNAL_DIFF="echo ext-env" git diff >out &&
cut -d" " -f1-2,4- <out >actual &&
test_cmp expect actual
'
test_expect_success 'attributes trump GIT_EXTERNAL_DIFF and diff.external' '
test_config diff.foo.command "echo ext-attribute" &&
test_config diff.external "echo ext-global" &&
echo "file diff=foo" >.gitattributes &&
cat >expect <<-EOF &&
ext-attribute file $(git rev-parse --verify HEAD:file) 100644 file $(test_oid zero) 100644
EOF
GIT_EXTERNAL_DIFF="echo ext-env" git diff >out &&
cut -d" " -f1-2,4- <out >actual &&
test_cmp expect actual
'
test_expect_success 'no diff with -diff' '
echo >.gitattributes "file -diff" &&
git diff >out &&
grep Binary out
'
echo NULZbetweenZwords | perl -pe 'y/Z/\000/' > file
test_expect_success 'force diff with "diff"' '
after=$(git hash-object file) &&
after=$(git rev-parse --short $after) &&
echo >.gitattributes "file diff" &&
git diff >actual &&
sed -e "s/^index .*/index $before..$after 100644/" \
"$TEST_DIRECTORY"/t4020/diff.NUL >expected-diff &&
test_cmp expected-diff actual
'
test_expect_success 'GIT_EXTERNAL_DIFF with more than one changed files' '
echo anotherfile > file2 &&
git add file2 &&
git commit -m "added 2nd file" &&
echo modified >file2 &&
GIT_EXTERNAL_DIFF=echo git diff
'
test_expect_success 'GIT_EXTERNAL_DIFF path counter/total' '
write_script external-diff.sh <<-\EOF &&
echo $GIT_DIFF_PATH_COUNTER of $GIT_DIFF_PATH_TOTAL >>counter.txt
EOF
>counter.txt &&
cat >expect <<-\EOF &&
1 of 2
2 of 2
EOF
GIT_EXTERNAL_DIFF=./external-diff.sh git diff &&
test_cmp expect counter.txt
'
test_expect_success 'GIT_EXTERNAL_DIFF generates pretty paths' '
test_when_finished "git rm -f file.ext" &&
touch file.ext &&
git add file.ext &&
echo with extension > file.ext &&
cat >expect <<-EOF &&
file.ext
EOF
GIT_EXTERNAL_DIFF=echo git diff file.ext >out &&
basename $(cut -d" " -f2 <out) >actual &&
test_cmp expect actual
'
echo "#!$SHELL_PATH" >fake-diff.sh
cat >> fake-diff.sh <<\EOF
cat $2 >> crlfed.txt
EOF
chmod a+x fake-diff.sh
keep_only_cr () {
tr -dc '\015'
}
test_expect_success 'external diff with autocrlf = true' '
test_config core.autocrlf true &&
GIT_EXTERNAL_DIFF=./fake-diff.sh git diff &&
test $(wc -l <crlfed.txt) = $(keep_only_cr <crlfed.txt | wc -c)
'
test_expect_success 'diff --cached' '
test_config core.autocrlf true &&
git add file &&
git update-index --assume-unchanged file &&
echo second >file &&
git diff --cached >actual &&
test_cmp expected-diff actual
'
test_expect_success 'clean up crlf leftovers' '
git update-index --no-assume-unchanged file &&
rm -f file* &&
git reset --hard
'
test_expect_success 'submodule diff' '
git init sub &&
( cd sub && test_commit sub1 ) &&
git add sub &&
test_tick &&
git commit -m "add submodule" &&
( cd sub && test_commit sub2 ) &&
write_script gather_pre_post.sh <<-\EOF &&
echo "$1 $4" # path, mode
cat "$2" # old file
cat "$5" # new file
EOF
GIT_EXTERNAL_DIFF=./gather_pre_post.sh git diff >actual &&
cat >expected <<-EOF &&
sub 160000
Subproject commit $(git rev-parse HEAD:sub)
Subproject commit $(cd sub && git rev-parse HEAD)
EOF
test_cmp expected actual
'
test_done