git/t/t8007-cat-file-textconv.sh
Ævar Arnfjörð Bjarmason 245b948815 cat-file: use GET_OID_ONLY_TO_DIE in --(textconv|filters)
Change the cat_one_file() logic that calls get_oid_with_context()
under --textconv and --filters to use the GET_OID_ONLY_TO_DIE flag,
thus improving the error messaging emitted when e.g. <path> is missing
but <rev> is not.

To service the "cat-file" use-case we need to introduce a new
"GET_OID_REQUIRE_PATH" flag, otherwise it would exit early as soon as
a valid "HEAD" was resolved, but in the "cat-file" case being changed
we always need a valid revision and path.

This arguably makes the "<bad rev>:<bad path>" and "<bad
rev>:<good (in HEAD) path>" use cases worse, as we won't quote the
<path> component at the user anymore, but let's just use the existing
logic "git log" et al use for now. We can improve the messaging for
those cases as a follow-up for all callers.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-30 13:05:29 -08:00

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#!/bin/sh
test_description='git cat-file textconv support'
. ./test-lib.sh
cat >helper <<'EOF'
#!/bin/sh
grep -q '^bin: ' "$1" || { echo "E: $1 is not \"binary\" file" 1>&2; exit 1; }
sed 's/^bin: /converted: /' "$1"
EOF
chmod +x helper
test_expect_success 'setup ' '
echo "bin: test" >one.bin &&
test_ln_s_add one.bin symlink.bin &&
git add . &&
GIT_AUTHOR_NAME=Number1 git commit -a -m First --date="2010-01-01 18:00:00" &&
echo "bin: test version 2" >one.bin &&
GIT_AUTHOR_NAME=Number2 git commit -a -m Second --date="2010-01-01 20:00:00"
'
test_expect_success 'usage: <bad rev>' '
cat >expect <<-\EOF &&
fatal: Not a valid object name HEAD2
EOF
test_must_fail git cat-file --textconv HEAD2 2>actual &&
test_cmp expect actual
'
test_expect_success 'usage: <bad rev>:<bad path>' '
cat >expect <<-\EOF &&
fatal: invalid object name '\''HEAD2'\''.
EOF
test_must_fail git cat-file --textconv HEAD2:two.bin 2>actual &&
test_cmp expect actual
'
test_expect_success 'usage: <rev>:<bad path>' '
cat >expect <<-\EOF &&
fatal: path '\''two.bin'\'' does not exist in '\''HEAD'\''
EOF
test_must_fail git cat-file --textconv HEAD:two.bin 2>actual &&
test_cmp expect actual
'
test_expect_success 'usage: <rev> with no <path>' '
cat >expect <<-\EOF &&
fatal: <object>:<path> required, only <object> '\''HEAD'\'' given
EOF
test_must_fail git cat-file --textconv HEAD 2>actual &&
test_cmp expect actual
'
test_expect_success 'usage: <bad rev>:<good (in HEAD) path>' '
cat >expect <<-\EOF &&
fatal: invalid object name '\''HEAD2'\''.
EOF
test_must_fail git cat-file --textconv HEAD2:one.bin 2>actual &&
test_cmp expect actual
'
cat >expected <<EOF
bin: test version 2
EOF
test_expect_success 'no filter specified' '
git cat-file --textconv :one.bin >result &&
test_cmp expected result
'
test_expect_success 'setup textconv filters' '
echo "*.bin diff=test" >.gitattributes &&
git config diff.test.textconv ./helper &&
git config diff.test.cachetextconv false
'
test_expect_success 'cat-file without --textconv' '
git cat-file blob :one.bin >result &&
test_cmp expected result
'
cat >expected <<EOF
bin: test
EOF
test_expect_success 'cat-file without --textconv on previous commit' '
git cat-file -p HEAD^:one.bin >result &&
test_cmp expected result
'
cat >expected <<EOF
converted: test version 2
EOF
test_expect_success 'cat-file --textconv on last commit' '
git cat-file --textconv :one.bin >result &&
test_cmp expected result
'
cat >expected <<EOF
converted: test
EOF
test_expect_success 'cat-file --textconv on previous commit' '
git cat-file --textconv HEAD^:one.bin >result &&
test_cmp expected result
'
test_expect_success 'cat-file without --textconv (symlink)' '
printf "%s" "one.bin" >expected &&
git cat-file blob :symlink.bin >result &&
test_cmp expected result
'
test_expect_success 'cat-file --textconv on index (symlink)' '
git cat-file --textconv :symlink.bin >result &&
test_cmp expected result
'
test_expect_success 'cat-file --textconv on HEAD (symlink)' '
git cat-file --textconv HEAD:symlink.bin >result &&
test_cmp expected result
'
test_done