git-commit-vandalism/t/t2203-add-intent.sh
SZEDER Gábor 1c5e94f459 tests: use 'test_must_be_empty' instead of 'test_cmp <empty> <out>'
Using 'test_must_be_empty' is shorter and more idiomatic than

  >empty &&
  test_cmp empty out

as it saves the creation of an empty file.  Furthermore, sometimes the
expected empty file doesn't have such a descriptive name like 'empty',
and its creation is far away from the place where it's finally used
for comparison (e.g. in 't7600-merge.sh', where two expected empty
files are created in the 'setup' test, but are used only about 500
lines later).

These cases were found by instrumenting 'test_cmp' to error out the
test script when it's used to compare empty files, and then converted
manually.

Note that even after this patch there still remain a lot of cases
where we use 'test_cmp' to check empty files:

  - Sometimes the expected output is not hard-coded in the test, but
    'test_cmp' is used to ensure that two similar git commands produce
    the same output, and that output happens to be empty, e.g. the
    test 'submodule update --merge  - ignores --merge  for new
    submodules' in 't7406-submodule-update.sh'.

  - Repetitive common tasks, including preparing the expected results
    and running 'test_cmp', are often extracted into a helper
    function, and some of this helper's callsites expect no output.

  - For the same reason as above, the whole 'test_expect_success'
    block is within a helper function, e.g. in 't3070-wildmatch.sh'.

  - Or 'test_cmp' is invoked in a loop, e.g. the test 'cvs update
    (-p)' in 't9400-git-cvsserver-server.sh'.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21 11:48:36 -07:00

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#!/bin/sh
test_description='Intent to add'
. ./test-lib.sh
test_expect_success 'intent to add' '
test_commit 1 &&
git rm 1.t &&
echo hello >1.t &&
echo hello >file &&
echo hello >elif &&
git add -N file &&
git add elif &&
git add -N 1.t
'
test_expect_success 'git status' '
git status --porcelain | grep -v actual >actual &&
cat >expect <<-\EOF &&
DA 1.t
A elif
A file
EOF
test_cmp expect actual
'
test_expect_success 'git status with porcelain v2' '
git status --porcelain=v2 | grep -v "^?" >actual &&
nam1=$(echo 1 | git hash-object --stdin) &&
nam2=$(git hash-object elif) &&
cat >expect <<-EOF &&
1 DA N... 100644 000000 100644 $nam1 $ZERO_OID 1.t
1 A. N... 000000 100644 100644 $ZERO_OID $nam2 elif
1 .A N... 000000 000000 100644 $ZERO_OID $ZERO_OID file
EOF
test_cmp expect actual
'
test_expect_success 'check result of "add -N"' '
git ls-files -s file >actual &&
empty=$(git hash-object --stdin </dev/null) &&
echo "100644 $empty 0 file" >expect &&
test_cmp expect actual
'
test_expect_success 'intent to add is just an ordinary empty blob' '
git add -u &&
git ls-files -s file >actual &&
git ls-files -s elif | sed -e "s/elif/file/" >expect &&
test_cmp expect actual
'
test_expect_success 'intent to add does not clobber existing paths' '
git add -N file elif &&
empty=$(git hash-object --stdin </dev/null) &&
git ls-files -s >actual &&
! grep "$empty" actual
'
test_expect_success 'i-t-a entry is simply ignored' '
test_tick &&
git commit -a -m initial &&
git reset --hard &&
echo xyzzy >rezrov &&
echo frotz >nitfol &&
git add rezrov &&
git add -N nitfol &&
git commit -m second &&
test $(git ls-tree HEAD -- nitfol | wc -l) = 0 &&
test $(git diff --name-only HEAD -- nitfol | wc -l) = 1 &&
test $(git diff --name-only -- nitfol | wc -l) = 1
'
test_expect_success 'can commit with an unrelated i-t-a entry in index' '
git reset --hard &&
echo bozbar >rezrov &&
echo frotz >nitfol &&
git add rezrov &&
git add -N nitfol &&
git commit -m partial rezrov
'
test_expect_success 'can "commit -a" with an i-t-a entry' '
git reset --hard &&
: >nitfol &&
git add -N nitfol &&
git commit -a -m all
'
test_expect_success 'cache-tree invalidates i-t-a paths' '
git reset --hard &&
mkdir dir &&
: >dir/foo &&
git add dir/foo &&
git commit -m foo &&
: >dir/bar &&
git add -N dir/bar &&
git diff --name-only >actual &&
echo dir/bar >expect &&
test_cmp expect actual &&
git write-tree >/dev/null &&
git diff --name-only >actual &&
echo dir/bar >expect &&
test_cmp expect actual
'
test_expect_success 'cache-tree does not ignore dir that has i-t-a entries' '
git init ita-in-dir &&
(
cd ita-in-dir &&
mkdir 2 &&
for f in 1 2/1 2/2 3
do
echo "$f" >"$f"
done &&
git add 1 2/2 3 &&
git add -N 2/1 &&
git commit -m committed &&
git ls-tree -r HEAD >actual &&
grep 2/2 actual
)
'
test_expect_success 'cache-tree does skip dir that becomes empty' '
rm -fr ita-in-dir &&
git init ita-in-dir &&
(
cd ita-in-dir &&
mkdir -p 1/2/3 &&
echo 4 >1/2/3/4 &&
git add -N 1/2/3/4 &&
git write-tree >actual &&
echo $EMPTY_TREE >expected &&
test_cmp expected actual
)
'
test_expect_success 'commit: ita entries ignored in empty initial commit check' '
git init empty-initial-commit &&
(
cd empty-initial-commit &&
: >one &&
git add -N one &&
test_must_fail git commit -m nothing-new-here
)
'
test_expect_success 'commit: ita entries ignored in empty commit check' '
git init empty-subsequent-commit &&
(
cd empty-subsequent-commit &&
test_commit one &&
: >two &&
git add -N two &&
test_must_fail git commit -m nothing-new-here
)
'
test_expect_success 'rename detection finds the right names' '
git init rename-detection &&
(
cd rename-detection &&
echo contents >first &&
git add first &&
git commit -m first &&
mv first third &&
git add -N third &&
git status | grep -v "^?" >actual.1 &&
test_i18ngrep "renamed: *first -> third" actual.1 &&
git status --porcelain | grep -v "^?" >actual.2 &&
cat >expected.2 <<-\EOF &&
R first -> third
EOF
test_cmp expected.2 actual.2 &&
hash=$(git hash-object third) &&
git status --porcelain=v2 | grep -v "^?" >actual.3 &&
cat >expected.3 <<-EOF &&
2 .R N... 100644 100644 100644 $hash $hash R100 third first
EOF
test_cmp expected.3 actual.3 &&
git diff --stat >actual.4 &&
cat >expected.4 <<-EOF &&
first => third | 0
1 file changed, 0 insertions(+), 0 deletions(-)
EOF
test_cmp expected.4 actual.4 &&
git diff --cached --stat >actual.5 &&
test_must_be_empty actual.5
)
'
test_expect_success 'double rename detection in status' '
git init rename-detection-2 &&
(
cd rename-detection-2 &&
echo contents >first &&
git add first &&
git commit -m first &&
git mv first second &&
mv second third &&
git add -N third &&
git status | grep -v "^?" >actual.1 &&
test_i18ngrep "renamed: *first -> second" actual.1 &&
test_i18ngrep "renamed: *second -> third" actual.1 &&
git status --porcelain | grep -v "^?" >actual.2 &&
cat >expected.2 <<-\EOF &&
R first -> second
R second -> third
EOF
test_cmp expected.2 actual.2 &&
hash=$(git hash-object third) &&
git status --porcelain=v2 | grep -v "^?" >actual.3 &&
cat >expected.3 <<-EOF &&
2 R. N... 100644 100644 100644 $hash $hash R100 second first
2 .R N... 100644 100644 100644 $hash $hash R100 third second
EOF
test_cmp expected.3 actual.3
)
'
test_expect_success 'diff-files/diff-cached shows ita as new/not-new files' '
git reset --hard &&
echo new >new-ita &&
git add -N new-ita &&
git diff --summary >actual &&
echo " create mode 100644 new-ita" >expected &&
test_cmp expected actual &&
git diff --cached --summary >actual2 &&
test_must_be_empty actual2
'
test_expect_success '"diff HEAD" includes ita as new files' '
git reset --hard &&
echo new >new-ita &&
git add -N new-ita &&
git diff HEAD >actual &&
cat >expected <<-\EOF &&
diff --git a/new-ita b/new-ita
new file mode 100644
index 0000000..3e75765
--- /dev/null
+++ b/new-ita
@@ -0,0 +1 @@
+new
EOF
test_cmp expected actual
'
test_expect_success 'apply --intent-to-add' '
git reset --hard &&
echo new >new-ita &&
git add -N new-ita &&
git diff >expected &&
grep "new file" expected &&
git reset --hard &&
git apply --intent-to-add expected &&
git diff >actual &&
test_cmp expected actual
'
test_done