git-commit-vandalism/t/t1309-early-config.sh
Nguyễn Thái Ngọc Duy e145a0bc9b config: correct file reading order in read_early_config()
Config file reading order is important because each file can override
values in the previous files and this is expected behavior. Normally
we read in this order, all in do_git_config_sequence():

1. $HOME/.gitconfig
2. $GIT_DIR/config
3. config from command line

However in read_early_config() the order may be swapped a bit if
setup_git_directory() has not been called:

1. $HOME/.gitconfig
2. $GIT_DIR/config is NOT read because .git dir is not found _yet_
3. config from command line
4. $GIT_DIR/config is now READ (after discover_git_directory() call)

The reading at step 4 could override config at step 3, which is not
the expectation.

Now that we could pass the .git dir around, we could feed
discover_git_directory() back to step 2, so that it works again, and
remove step 4.

Noticed-by: Jeff King <peff@peff.net>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-04-19 18:50:30 -07:00

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#!/bin/sh
test_description='Test read_early_config()'
. ./test-lib.sh
test_expect_success 'read early config' '
test_config early.config correct &&
test-config read_early_config early.config >output &&
test correct = "$(cat output)"
'
test_expect_success 'in a sub-directory' '
test_config early.config sub &&
mkdir -p sub &&
(
cd sub &&
test-config read_early_config early.config
) >output &&
test sub = "$(cat output)"
'
test_expect_success 'ceiling' '
test_config early.config ceiling &&
mkdir -p sub &&
(
GIT_CEILING_DIRECTORIES="$PWD" &&
export GIT_CEILING_DIRECTORIES &&
cd sub &&
test-config read_early_config early.config
) >output &&
test -z "$(cat output)"
'
test_expect_success 'ceiling #2' '
mkdir -p xdg/git &&
git config -f xdg/git/config early.config xdg &&
test_config early.config ceiling &&
mkdir -p sub &&
(
XDG_CONFIG_HOME="$PWD"/xdg &&
GIT_CEILING_DIRECTORIES="$PWD" &&
export GIT_CEILING_DIRECTORIES XDG_CONFIG_HOME &&
cd sub &&
test-config read_early_config early.config
) >output &&
test xdg = "$(cat output)"
'
cmdline_config="'test.source=cmdline'"
test_expect_success 'read config file in right order' '
echo "[test]source = home" >>.gitconfig &&
git init foo &&
(
cd foo &&
echo "[test]source = repo" >>.git/config &&
GIT_CONFIG_PARAMETERS=$cmdline_config test-config \
read_early_config test.source >actual &&
cat >expected <<-\EOF &&
home
repo
cmdline
EOF
test_cmp expected actual
)
'
test_with_config () {
rm -rf throwaway &&
git init throwaway &&
(
cd throwaway &&
echo "$*" >.git/config &&
test-config read_early_config early.config
)
}
test_expect_success 'ignore .git/ with incompatible repository version' '
test_with_config "[core]repositoryformatversion = 999999" 2>err &&
grep "warning:.* Expected git repo version <= [1-9]" err
'
test_expect_failure 'ignore .git/ with invalid repository version' '
test_with_config "[core]repositoryformatversion = invalid"
'
test_expect_failure 'ignore .git/ with invalid config' '
test_with_config "["
'
test_done