mkdir a &&
mkdir b &&
echo 1 >a/1 &&
- echo 2 >a/2
+ echo 2 >a/2 &&
+ git init repo &&
+ echo 1 >repo/a &&
+ mkdir -p non/git &&
+ echo 1 >non/git/a &&
+ echo 1 >non/git/b
'
test_expect_success 'git diff --no-index directories' '
- git diff --no-index a b >cnt
- test $? = 1 && test_line_count = 14 cnt
+ test_expect_code 1 git diff --no-index a b >cnt &&
+ test_line_count = 14 cnt
+'
+
+test_expect_success 'git diff --no-index relative path outside repo' '
+ (
+ cd repo &&
+ test_expect_code 0 git diff --no-index a ../non/git/a &&
+ test_expect_code 0 git diff --no-index ../non/git/a ../non/git/b
+ )
+'
+
+test_expect_success 'git diff --no-index with broken index' '
+ (
+ cd repo &&
+ echo broken >.git/index &&
+ git diff --no-index a ../non/git/a
+ )
+'
+
+test_expect_success 'git diff outside repo with broken index' '
+ (
+ cd repo &&
+ git diff ../non/git/a ../non/git/b
+ )
+'
+
+test_expect_success 'git diff --no-index executed outside repo gives correct error message' '
+ (
+ GIT_CEILING_DIRECTORIES=$TRASH_DIRECTORY/non &&
+ export GIT_CEILING_DIRECTORIES &&
+ cd non/git &&
+ test_must_fail git diff --no-index a 2>actual.err &&
+ echo "usage: git diff --no-index <path> <path>" >expect.err &&
+ test_cmp expect.err actual.err
+ )
+'
+
+test_expect_success 'diff D F and diff F D' '
+ (
+ cd repo &&
+ echo in-repo >a &&
+ echo non-repo >../non/git/a &&
+ mkdir sub &&
+ echo sub-repo >sub/a &&
+
+ test_must_fail git diff --no-index sub/a ../non/git/a >expect &&
+ test_must_fail git diff --no-index sub/a ../non/git/ >actual &&
+ test_cmp expect actual &&
+
+ test_must_fail git diff --no-index a ../non/git/a >expect &&
+ test_must_fail git diff --no-index a ../non/git/ >actual &&
+ test_cmp expect actual &&
+
+ test_must_fail git diff --no-index ../non/git/a a >expect &&
+ test_must_fail git diff --no-index ../non/git a >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'turning a file into a directory' '
+ (
+ cd non/git &&
+ mkdir d e e/sub &&
+ echo 1 >d/sub &&
+ echo 2 >e/sub/file &&
+ printf "D\td/sub\nA\te/sub/file\n" >expect &&
+ test_must_fail git diff --no-index --name-status d e >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'diff from repo subdir shows real paths (explicit)' '
+ echo "diff --git a/../../non/git/a b/../../non/git/b" >expect &&
+ test_expect_code 1 \
+ git -C repo/sub \
+ diff --no-index ../../non/git/a ../../non/git/b >actual &&
+ head -n 1 <actual >actual.head &&
+ test_cmp expect actual.head
+'
+
+test_expect_success 'diff from repo subdir shows real paths (implicit)' '
+ echo "diff --git a/../../non/git/a b/../../non/git/b" >expect &&
+ test_expect_code 1 \
+ git -C repo/sub \
+ diff ../../non/git/a ../../non/git/b >actual &&
+ head -n 1 <actual >actual.head &&
+ test_cmp expect actual.head
+'
+
+test_expect_success 'diff --no-index from repo subdir respects config (explicit)' '
+ echo "diff --git ../../non/git/a ../../non/git/b" >expect &&
+ test_config -C repo diff.noprefix true &&
+ test_expect_code 1 \
+ git -C repo/sub \
+ diff --no-index ../../non/git/a ../../non/git/b >actual &&
+ head -n 1 <actual >actual.head &&
+ test_cmp expect actual.head
+'
+
+test_expect_success 'diff --no-index from repo subdir respects config (implicit)' '
+ echo "diff --git ../../non/git/a ../../non/git/b" >expect &&
+ test_config -C repo diff.noprefix true &&
+ test_expect_code 1 \
+ git -C repo/sub \
+ diff ../../non/git/a ../../non/git/b >actual &&
+ head -n 1 <actual >actual.head &&
+ test_cmp expect actual.head
+'
+
+test_expect_success 'diff --no-index from repo subdir with absolute paths' '
+ cat <<-EOF >expect &&
+ 1 1 $(pwd)/non/git/{a => b}
+ EOF
+ test_expect_code 1 \
+ git -C repo/sub diff --numstat \
+ "$(pwd)/non/git/a" "$(pwd)/non/git/b" >actual &&
+ test_cmp expect actual
'
test_done