git/t/t7814-grep-recurse-submodules.sh
Brandon Williams e6fac7f3d3 grep: search history of moved submodules
If a submodule was renamed at any point since it's inception then if you
were to try and grep on a commit prior to the submodule being moved, you
wouldn't be able to find a working directory for the submodule since the
path in the past is different from the current path.

This patch teaches grep to find the .git directory for a submodule in
the parents .git/modules/ directory in the event the path to the
submodule in the commit that is being searched differs from the state of
the currently checked out commit.  If found, the child process that is
spawned to grep the submodule will chdir into its gitdir instead of a
working directory.

In order to override the explicit setting of submodule child process's
gitdir environment variable (which was introduced in '10f5c526')
`GIT_DIR_ENVIORMENT` needs to be pushed onto child process's env_array.
This allows the searching of history from a submodule's gitdir, rather
than from a working directory.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22 11:47:33 -08:00

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#!/bin/sh
test_description='Test grep recurse-submodules feature
This test verifies the recurse-submodules feature correctly greps across
submodules.
'
. ./test-lib.sh
test_expect_success 'setup directory structure and submodule' '
echo "foobar" >a &&
mkdir b &&
echo "bar" >b/b &&
git add a b &&
git commit -m "add a and b" &&
git init submodule &&
echo "foobar" >submodule/a &&
git -C submodule add a &&
git -C submodule commit -m "add a" &&
git submodule add ./submodule &&
git commit -m "added submodule"
'
test_expect_success 'grep correctly finds patterns in a submodule' '
cat >expect <<-\EOF &&
a:foobar
b/b:bar
submodule/a:foobar
EOF
git grep -e "bar" --recurse-submodules >actual &&
test_cmp expect actual
'
test_expect_success 'grep and basic pathspecs' '
cat >expect <<-\EOF &&
submodule/a:foobar
EOF
git grep -e. --recurse-submodules -- submodule >actual &&
test_cmp expect actual
'
test_expect_success 'grep and nested submodules' '
git init submodule/sub &&
echo "foobar" >submodule/sub/a &&
git -C submodule/sub add a &&
git -C submodule/sub commit -m "add a" &&
git -C submodule submodule add ./sub &&
git -C submodule add sub &&
git -C submodule commit -m "added sub" &&
git add submodule &&
git commit -m "updated submodule" &&
cat >expect <<-\EOF &&
a:foobar
b/b:bar
submodule/a:foobar
submodule/sub/a:foobar
EOF
git grep -e "bar" --recurse-submodules >actual &&
test_cmp expect actual
'
test_expect_success 'grep and multiple patterns' '
cat >expect <<-\EOF &&
a:foobar
submodule/a:foobar
submodule/sub/a:foobar
EOF
git grep -e "bar" --and -e "foo" --recurse-submodules >actual &&
test_cmp expect actual
'
test_expect_success 'grep and multiple patterns' '
cat >expect <<-\EOF &&
b/b:bar
EOF
git grep -e "bar" --and --not -e "foo" --recurse-submodules >actual &&
test_cmp expect actual
'
test_expect_success 'basic grep tree' '
cat >expect <<-\EOF &&
HEAD:a:foobar
HEAD:b/b:bar
HEAD:submodule/a:foobar
HEAD:submodule/sub/a:foobar
EOF
git grep -e "bar" --recurse-submodules HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'grep tree HEAD^' '
cat >expect <<-\EOF &&
HEAD^:a:foobar
HEAD^:b/b:bar
HEAD^:submodule/a:foobar
EOF
git grep -e "bar" --recurse-submodules HEAD^ >actual &&
test_cmp expect actual
'
test_expect_success 'grep tree HEAD^^' '
cat >expect <<-\EOF &&
HEAD^^:a:foobar
HEAD^^:b/b:bar
EOF
git grep -e "bar" --recurse-submodules HEAD^^ >actual &&
test_cmp expect actual
'
test_expect_success 'grep tree and pathspecs' '
cat >expect <<-\EOF &&
HEAD:submodule/a:foobar
HEAD:submodule/sub/a:foobar
EOF
git grep -e "bar" --recurse-submodules HEAD -- submodule >actual &&
test_cmp expect actual
'
test_expect_success 'grep tree and pathspecs' '
cat >expect <<-\EOF &&
HEAD:submodule/a:foobar
HEAD:submodule/sub/a:foobar
EOF
git grep -e "bar" --recurse-submodules HEAD -- "submodule*a" >actual &&
test_cmp expect actual
'
test_expect_success 'grep tree and more pathspecs' '
cat >expect <<-\EOF &&
HEAD:submodule/a:foobar
EOF
git grep -e "bar" --recurse-submodules HEAD -- "submodul?/a" >actual &&
test_cmp expect actual
'
test_expect_success 'grep tree and more pathspecs' '
cat >expect <<-\EOF &&
HEAD:submodule/sub/a:foobar
EOF
git grep -e "bar" --recurse-submodules HEAD -- "submodul*/sub/a" >actual &&
test_cmp expect actual
'
test_expect_success !MINGW 'grep recurse submodule colon in name' '
git init parent &&
test_when_finished "rm -rf parent" &&
echo "foobar" >"parent/fi:le" &&
git -C parent add "fi:le" &&
git -C parent commit -m "add fi:le" &&
git init "su:b" &&
test_when_finished "rm -rf su:b" &&
echo "foobar" >"su:b/fi:le" &&
git -C "su:b" add "fi:le" &&
git -C "su:b" commit -m "add fi:le" &&
git -C parent submodule add "../su:b" "su:b" &&
git -C parent commit -m "add submodule" &&
cat >expect <<-\EOF &&
fi:le:foobar
su:b/fi:le:foobar
EOF
git -C parent grep -e "foobar" --recurse-submodules >actual &&
test_cmp expect actual &&
cat >expect <<-\EOF &&
HEAD:fi:le:foobar
HEAD:su:b/fi:le:foobar
EOF
git -C parent grep -e "foobar" --recurse-submodules HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'grep history with moved submoules' '
git init parent &&
test_when_finished "rm -rf parent" &&
echo "foobar" >parent/file &&
git -C parent add file &&
git -C parent commit -m "add file" &&
git init sub &&
test_when_finished "rm -rf sub" &&
echo "foobar" >sub/file &&
git -C sub add file &&
git -C sub commit -m "add file" &&
git -C parent submodule add ../sub dir/sub &&
git -C parent commit -m "add submodule" &&
cat >expect <<-\EOF &&
dir/sub/file:foobar
file:foobar
EOF
git -C parent grep -e "foobar" --recurse-submodules >actual &&
test_cmp expect actual &&
git -C parent mv dir/sub sub-moved &&
git -C parent commit -m "moved submodule" &&
cat >expect <<-\EOF &&
file:foobar
sub-moved/file:foobar
EOF
git -C parent grep -e "foobar" --recurse-submodules >actual &&
test_cmp expect actual &&
cat >expect <<-\EOF &&
HEAD^:dir/sub/file:foobar
HEAD^:file:foobar
EOF
git -C parent grep -e "foobar" --recurse-submodules HEAD^ >actual &&
test_cmp expect actual
'
test_incompatible_with_recurse_submodules ()
{
test_expect_success "--recurse-submodules and $1 are incompatible" "
test_must_fail git grep -e. --recurse-submodules $1 2>actual &&
test_i18ngrep 'not supported with --recurse-submodules' actual
"
}
test_incompatible_with_recurse_submodules --untracked
test_incompatible_with_recurse_submodules --no-index
test_done