git/t/t7814-grep-recurse-submodules.sh
Brandon Williams be80a2392f grep: fix bug when recursing with relative pathspec
When using the --recurse-submodules flag with a relative pathspec which
includes "..", an error is produced inside the child process spawned for
a submodule.  When creating the pathspec struct in the child, the ".."
is interpreted to mean "go up a directory" which causes an error stating
that the path ".." is outside of the repository.

While it is true that ".." is outside the scope of the submodule, it is
confusing to a user who originally invoked the command where ".." was
indeed still inside the scope of the superproject.  Since the child
process launched for the submodule has some context that it is operating
underneath a superproject, this error could be avoided.

This patch fixes the bug by passing the 'prefix' to the child process.
Now each child process that works on a submodule has two points of
reference to the superproject: (1) the 'super_prefix' which is the path
from the root of the superproject down to root of the submodule and (2)
the 'prefix' which is the path from the root of the superproject down to
the directory where the user invoked the git command.

With these two pieces of information a child process can correctly
interpret the pathspecs provided by the user as well as being able to
properly format its output relative to the directory the user invoked
the original command from.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-17 11:54:50 -07:00

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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_expect_success 'grep using relative path' '
test_when_finished "rm -rf parent sub" &&
git init sub &&
echo "foobar" >sub/file &&
git -C sub add file &&
git -C sub commit -m "add file" &&
git init parent &&
echo "foobar" >parent/file &&
git -C parent add file &&
mkdir parent/src &&
echo "foobar" >parent/src/file2 &&
git -C parent add src/file2 &&
git -C parent submodule add ../sub &&
git -C parent commit -m "add files and submodule" &&
# From top works
cat >expect <<-\EOF &&
file:foobar
src/file2:foobar
sub/file:foobar
EOF
git -C parent grep --recurse-submodules -e "foobar" >actual &&
test_cmp expect actual &&
# Relative path to top
cat >expect <<-\EOF &&
../file:foobar
file2:foobar
../sub/file:foobar
EOF
git -C parent/src grep --recurse-submodules -e "foobar" -- .. >actual &&
test_cmp expect actual &&
# Relative path to submodule
cat >expect <<-\EOF &&
../sub/file:foobar
EOF
git -C parent/src grep --recurse-submodules -e "foobar" -- ../sub >actual &&
test_cmp expect actual
'
test_expect_success 'grep from a subdir' '
test_when_finished "rm -rf parent sub" &&
git init sub &&
echo "foobar" >sub/file &&
git -C sub add file &&
git -C sub commit -m "add file" &&
git init parent &&
mkdir parent/src &&
echo "foobar" >parent/src/file &&
git -C parent add src/file &&
git -C parent submodule add ../sub src/sub &&
git -C parent submodule add ../sub sub &&
git -C parent commit -m "add files and submodules" &&
# Verify grep from root works
cat >expect <<-\EOF &&
src/file:foobar
src/sub/file:foobar
sub/file:foobar
EOF
git -C parent grep --recurse-submodules -e "foobar" >actual &&
test_cmp expect actual &&
# Verify grep from a subdir works
cat >expect <<-\EOF &&
file:foobar
sub/file:foobar
EOF
git -C parent/src grep --recurse-submodules -e "foobar" >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